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blabla/PATSTAT/CPC_data/CPCSchemeXML202302/cpc-scheme-G05F.xml

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<class-scheme publication-date="2023-02-01" scheme-type="cpc" publication-type="official">
<classification-item breakdown-code="false" not-allocatable="true" level="5" additional-only="false" sort-key="G05F" definition-exists="true" date-revised="2020-01-01" status="published"><classification-symbol>G05F</classification-symbol><class-title date-revised="2020-01-01"><title-part><text>SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES </text><reference><text>regulating the timing or recurrence frequency of pulses in radar or radio navigation systems <class-ref scheme="cpc">G01S</class-ref>; regulation of current or voltage, specially adapted for use in electronic time-pieces <class-ref scheme="cpc">G04G19/02</class-ref>; closed-loop systems for regulating non-electric variables by electric means <class-ref scheme="cpc">G05D</class-ref>; regulating power supply of digital computers <class-ref scheme="cpc">G06F1/26</class-ref>; for obtaining desired operating characteristics of electromagnets with armatures <class-ref scheme="cpc">H01F7/18</class-ref>; regulating electric power distribution networks <class-ref scheme="cpc">H02J</class-ref>; regulating the charging of batteries <class-ref scheme="cpc">H02J7/00</class-ref>; regulation of the output of static converters, e.g. switching regulators <class-ref scheme="cpc">H02M</class-ref>; regulation of the output of electric generators <class-ref scheme="cpc">H02N</class-ref>, <class-ref scheme="cpc">H02P9/00</class-ref>; controlling transformers, reactors or choke coils <class-ref scheme="cpc">H02P13/00</class-ref>; regulating frequency response, gain, maximum output, amplitude or bandwidth of amplifiers <class-ref scheme="cpc">H03G</class-ref>; regulating tuning of resonant circuits <class-ref scheme="cpc">H03J</class-ref>; regulating characteristics of transmission lines <class-ref scheme="cpc">H04B</class-ref>; controlling electric light sources <class-ref scheme="cpc">H05B39/04</class-ref>, <class-ref scheme="cpc">H05B41/36</class-ref>, <class-ref scheme="cpc">H05B45/10</class-ref>, <class-ref scheme="cpc">H05B45/20</class-ref>, <class-ref scheme="cpc">H05B47/10</class-ref>; electric control of X-ray apparatus <class-ref scheme="cpc">H05G1/30</class-ref></text></reference></title-part></class-title><notes-and-warnings date-revised="2013-01-01"><note type="note"><note-paragraph>This subclass <u>covers</u>: <subnote type="bullet"><note-paragraph>systems only; </note-paragraph><note-paragraph>use of hydraulic, pneumatic, mechanical, and electrical motors for varying electric characteristics of devices which restore the quantity regulated; </note-paragraph><note-paragraph>the combination of static converters and current or voltage regulators, if the invention resides in the combination.</note-paragraph></subnote></note-paragraph><note-paragraph>This subclass <u>does not cover</u> elements <u>per se</u>, which are covered by the relevant subclasses.</note-paragraph></note><note type="warning"><note-paragraph warning-type="ipc-not-used">The following IPC groups are not in the CPC scheme. The subject matter for these IPC groups is classified in the following CPC groups: <table><row><entry><class-ref scheme="ipc">G05F3/28</class-ref></entry><entry> covered by </entry><entry><class-ref scheme="cpc">G05F3/26</class-ref></entry></row><row><entry><class-ref scheme="ipc">G05F5/02</class-ref></entry><entry> covered by </entry><entry><class-ref scheme="cpc">G05F5/00</class-ref></entry></row><row><entry><class-ref scheme="ipc">G05F5/04</class-ref></entry><entry> covered by </entry><entry><class-ref scheme="cpc">G05F5/00</class-ref></entry></row><row><entry><class-ref scheme="ipc">G05F5/06</class-ref></entry><entry> covered by </entry><entry><class-ref scheme="cpc">G05F5/00</class-ref></entry></row><row><entry><class-ref scheme="ipc">G05F5/08</class-ref></entry><entry> covered by </entry><entry><class-ref scheme="cpc">G05F5/00</class-ref></entry></row></table></note-paragraph><note-paragraph>In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.</note-paragraph></note></notes-and-warnings>
<classification-item breakdown-code="false" not-allocatable="true" level="6" additional-only="false" sort-key="G05F1/00" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/00</classification-symbol>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="G05F1/00" definition-exists="false" ipc-concordant="G05F1/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G05F1/02" definition-exists="true" ipc-concordant="G05F1/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Regulating electric characteristics of arcs </text><reference><text>arrangements for feeding electrodes <class-ref scheme="cpc">B23K9/12</class-ref>, <class-ref scheme="cpc">H05B7/109</class-ref>, <class-ref scheme="cpc">H05B31/18</class-ref>; automatic control of power for heating by discharge <class-ref scheme="cpc">H05B7/148</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G05F1/04" definition-exists="false" ipc-concordant="G05F1/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by means of saturable magnetic devices</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G05F1/06" definition-exists="false" ipc-concordant="G05F1/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by means of discharge tubes</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G05F1/08" definition-exists="false" ipc-concordant="G05F1/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>by means of semiconductor devices</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G05F1/10" definition-exists="true" ipc-concordant="G05F1/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Regulating voltage or current </text><reference><text><class-ref scheme="cpc">G05F1/02</class-ref> takes precedence; for electric railways <class-ref scheme="cpc">B60M3/02</class-ref></text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G05F1/12" definition-exists="false" ipc-concordant="G05F1/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>wherein the variable actually regulated by the final control device is ac </text><reference><text><class-ref scheme="cpc">G05F1/625</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G05F1/13" definition-exists="false" ipc-concordant="G05F1/13" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>G05F1/13</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>using ferroresonant transformers as final control devices</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G05F1/14" definition-exists="false" ipc-concordant="G05F1/14" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2017-08-01" status="published"><classification-symbol>G05F1/14</classification-symbol><class-title date-revised="2017-08-01"><title-part><text>using tap transformers or tap changing inductors as final control devices</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/147" definition-exists="false" ipc-concordant="G05F1/147" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/147</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with motor driven tap switch</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="G05F1/153" definition-exists="false" ipc-concordant="G05F1/153" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/153</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>controlled by discharge tubes or semiconductor devices</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/16" definition-exists="false" ipc-concordant="G05F1/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>combined with discharge tubes or semiconductor devices</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="G05F1/20" definition-exists="false" ipc-concordant="G05F1/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>semiconductor devices only</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/22" definition-exists="false" ipc-concordant="G05F1/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>combined with separate magnetic control devices having a controllable degree of saturation</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G05F1/24" definition-exists="false" ipc-concordant="G05F1/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using bucking or boosting transformers as final control devices</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/247" definition-exists="false" ipc-concordant="G05F1/247" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/247</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with motor in control circuit</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/253" definition-exists="false" ipc-concordant="G05F1/253" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/253</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>the transformers including plural windings in series between source and load </text><reference><text><class-ref scheme="cpc">G05F1/247</class-ref> takes precedence</text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/26" definition-exists="false" ipc-concordant="G05F1/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>combined with discharge tubes or semiconductor devices</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="G05F1/30" definition-exists="false" ipc-concordant="G05F1/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>semiconductor devices only</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G05F1/32" definition-exists="false" ipc-concordant="G05F1/32" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/32</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using magnetic devices having a controllable degree of saturation as final control devices</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/325" definition-exists="false" ipc-concordant="G05F1/325" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/325</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with specific core structure, e.g. gap, aperture, slot, permanent magnet</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/33" definition-exists="false" ipc-concordant="G05F1/33" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/33</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with plural windings through which current to be controlled is conducted</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="G05F1/335" definition-exists="false" ipc-concordant="G05F1/335" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/335</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>on different cores</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/34" definition-exists="false" ipc-concordant="G05F1/34" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/34</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>combined with discharge tubes or semiconductor devices</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="G05F1/38" definition-exists="false" ipc-concordant="G05F1/38" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/38</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>semiconductor devices only</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G05F1/40" definition-exists="false" ipc-concordant="G05F1/40" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/40</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using discharge tubes or semiconductor devices as final control devices</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/42" definition-exists="false" ipc-concordant="G05F1/42" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/42</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>discharge tubes only</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/44" definition-exists="false" ipc-concordant="G05F1/44" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/44</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>semiconductor devices only</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="G05F1/445" definition-exists="false" ipc-concordant="G05F1/445" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/445</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>being transistors in series with the load</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="G05F1/45" definition-exists="false" ipc-concordant="G05F1/45" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/45</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>being controlled rectifiers in series with the load</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="G05F1/452" definition-exists="false" ipc-concordant="G05F1/45" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/452</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with pulse-burst modulation control</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="G05F1/455" definition-exists="false" ipc-concordant="G05F1/455" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/455</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with phase control</text></title-part></class-title></classification-item></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G05F1/46" definition-exists="true" ipc-concordant="G05F1/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/46</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>wherein the variable actually regulated by the final control device is dc </text><reference><text><class-ref scheme="cpc">G05F1/625</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G05F1/461" definition-exists="false" ipc-concordant="G05F1/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/461</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using an operational amplifier as final control device</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G05F1/462" definition-exists="false" ipc-concordant="G05F1/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/462</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>as a function of the requirements of the load, e.g. delay, temperature, specific voltage/current characteristic</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/463" definition-exists="false" ipc-concordant="G05F1/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/463</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Sources providing an output which depends on temperature</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/465" definition-exists="false" ipc-concordant="G05F1/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/465</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Internal voltage generators for integrated circuits, e.g. step down generators</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/466" definition-exists="false" ipc-concordant="G05F1/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/466</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Sources with reduced influence on propagation delay</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/467" definition-exists="false" ipc-concordant="G05F1/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/467</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Sources with noise compensation</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G05F1/468" definition-exists="false" ipc-concordant="G05F1/46" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/468</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>characterised by reference voltage circuitry, e.g. soft start, remote shutdown</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G05F1/52" definition-exists="false" ipc-concordant="G05F1/52" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/52</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using discharge tubes in series with the load as final control devices</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/54" definition-exists="false" ipc-concordant="G05F1/54" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/54</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>additionally controlled by the unregulated supply</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G05F1/56" definition-exists="false" ipc-concordant="G05F1/56" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/56</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using semiconductor devices in series with the load as final control devices </text><reference><text><class-ref scheme="cpc">G05F1/461</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/561" definition-exists="false" ipc-concordant="G05F1/56" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/561</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Voltage to current converters </text><reference><text>amplifiers <class-ref scheme="cpc">H03F</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/562" definition-exists="false" ipc-concordant="G05F1/56" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/562</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with a threshold detection shunting the control path of the final control device</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/563" definition-exists="false" ipc-concordant="G05F1/563" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/563</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>including two stages of regulation at least one of which is output level responsive, e.g. coarse and fine regulation</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/565" definition-exists="false" ipc-concordant="G05F1/565" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/565</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor </text><reference><text><class-ref scheme="cpc">G05F1/563</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="G05F1/567" definition-exists="false" ipc-concordant="G05F1/567" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/567</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for temperature compensation</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="G05F1/569" definition-exists="false" ipc-concordant="G05F1/569" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/569</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for protection</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="G05F1/571" definition-exists="false" ipc-concordant="G05F1/571" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/571</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with overvoltage detector</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="G05F1/573" definition-exists="false" ipc-concordant="G05F1/573" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/573</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>with overcurrent detector</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="14" additional-only="false" sort-key="G05F1/5735" definition-exists="false" ipc-concordant="G05F1/573" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/5735</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with foldback current limiting</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/575" definition-exists="false" ipc-concordant="G05F1/575" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/575</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>characterised by the feedback circuit</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/577" definition-exists="false" ipc-concordant="G05F1/577" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/577</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>for plural loads</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="G05F1/585" definition-exists="false" ipc-concordant="G05F1/585" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/585</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>providing voltages of opposite polarities</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/59" definition-exists="false" ipc-concordant="G05F1/59" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/59</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>including plural semiconductor devices as final control devices for a single load</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="G05F1/595" definition-exists="false" ipc-concordant="G05F1/595" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/595</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>semiconductor devices connected in series</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G05F1/607" definition-exists="false" ipc-concordant="G05F1/607" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/607</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using discharge tubes in parallel with the load as final control devices</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/61" definition-exists="false" ipc-concordant="G05F1/61" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/61</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>including two stages of regulation, at least one of which is output level responsive</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G05F1/613" definition-exists="false" ipc-concordant="G05F1/613" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/613</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using semiconductor devices in parallel with the load as final control devices </text><reference><text><class-ref scheme="cpc">G05F1/461</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/614" definition-exists="false" ipc-concordant="G05F1/614" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/614</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>including two stages of regulation, at least one of which is output level responsive</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G05F1/618" definition-exists="false" ipc-concordant="G05F1/618" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/618</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using semiconductor devices in series and in parallel with the load as final control devices </text><reference><text><class-ref scheme="cpc">G05F1/461</class-ref> takes precedence</text></reference></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G05F1/62" definition-exists="false" ipc-concordant="G05F1/62" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/62</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using bucking or boosting dc sources</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G05F1/625" definition-exists="false" ipc-concordant="G05F1/625" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/625</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>wherein it is irrelevant whether the variable actually regulated is ac or dc</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G05F1/63" definition-exists="false" ipc-concordant="G05F1/63" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/63</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using variable impedances in series with the load as final control devices</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/635" definition-exists="false" ipc-concordant="G05F1/635" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/635</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>being Hall effect devices, magnetoresistors or thermistors</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/644" definition-exists="false" ipc-concordant="G05F1/644" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/644</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>being pressure-sensitive resistors</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F1/648" definition-exists="false" ipc-concordant="G05F1/648" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/648</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>being plural resistors among which a selection is made</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G05F1/652" definition-exists="false" ipc-concordant="G05F1/652" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/652</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using variable impedances in parallel with the load as final control devices</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G05F1/656" definition-exists="false" ipc-concordant="G05F1/656" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/656</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using variable impedances in series and in parallel with the load as final control devices</text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G05F1/66" definition-exists="false" ipc-concordant="G05F1/66" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/66</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Regulating electric power</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G05F1/67" definition-exists="false" ipc-concordant="G05F1/67" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/67</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>to the maximum power available from a generator, e.g. from solar cell</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G05F1/70" definition-exists="false" ipc-concordant="G05F1/70" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F1/70</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Regulating power factor</text></title-part><title-part><text>Regulating reactive current or power</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="G05F3/00" definition-exists="true" ipc-concordant="G05F3/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties </text><CPC-specific-text><reference><text>current generators specially designed for use in phase-locked loops <class-ref scheme="cpc">H03L7/0891</class-ref></text></reference></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="8" additional-only="false" sort-key="G05F3/02" definition-exists="false" ipc-concordant="G05F3/02" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/02</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Regulating voltage or current</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G05F3/04" definition-exists="false" ipc-concordant="G05F3/04" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/04</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>wherein the variable is ac</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G05F3/06" definition-exists="false" ipc-concordant="G05F3/06" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/06</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using combinations of saturated and unsaturated inductive devices, e.g. combined with resonant circuit</text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="9" additional-only="false" sort-key="G05F3/08" definition-exists="true" ipc-concordant="G05F3/08" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/08</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>wherein the variable is dc</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="10" additional-only="false" sort-key="G05F3/10" definition-exists="false" ipc-concordant="G05F3/10" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/10</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using uncontrolled devices with non-linear characteristics</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F3/12" definition-exists="false" ipc-concordant="G05F3/12" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/12</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>being glow discharge tubes</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="11" additional-only="false" sort-key="G05F3/16" definition-exists="false" ipc-concordant="G05F3/16" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/16</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>being semiconductor devices</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="G05F3/18" definition-exists="false" ipc-concordant="G05F3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/18</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using Zener diodes</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="G05F3/185" definition-exists="false" ipc-concordant="G05F3/18" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/185</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>and field-effect transistors</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="12" additional-only="false" sort-key="G05F3/20" definition-exists="false" ipc-concordant="G05F3/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/20</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>using diode- transistor combinations </text><reference><text><class-ref scheme="cpc">G05F3/18</class-ref> takes precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="G05F3/205" definition-exists="false" ipc-concordant="G05F3/20" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/205</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>Substrate bias-voltage generators </text><reference><text>for static stores <class-ref scheme="cpc">G11C5/146</class-ref></text></reference></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="G05F3/22" definition-exists="false" ipc-concordant="G05F3/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/22</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>wherein the transistors are of the bipolar type only </text><reference><text><class-ref scheme="cpc">G05F3/26</class-ref>, <class-ref scheme="cpc">G05F3/30</class-ref> take precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="14" additional-only="false" sort-key="G05F3/222" definition-exists="false" ipc-concordant="G05F3/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/222</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with compensation for device parameters, e.g. Early effect, gain, manufacturing process, or external variations, e.g. temperature, loading, supply voltage</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="15" additional-only="false" sort-key="G05F3/225" definition-exists="false" ipc-concordant="G05F3/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/225</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>producing a current or voltage as a predetermined function of the temperature</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="15" additional-only="false" sort-key="G05F3/227" definition-exists="false" ipc-concordant="G05F3/22" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/227</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>producing a current or voltage as a predetermined function of the supply voltage</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="G05F3/24" definition-exists="false" ipc-concordant="G05F3/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/24</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>wherein the transistors are of the field-effect type only </text><reference><text><class-ref scheme="cpc">G05F3/205</class-ref>, <class-ref scheme="cpc">G05F3/26</class-ref>, <class-ref scheme="cpc">G05F3/30</class-ref> take precedence</text></reference></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="14" additional-only="false" sort-key="G05F3/242" definition-exists="false" ipc-concordant="G05F3/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/242</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>with compensation for device parameters, e.g. channel width modulation, threshold voltage, processing, or external variations, e.g. temperature, loading, supply voltage</text></CPC-specific-text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="15" additional-only="false" sort-key="G05F3/245" definition-exists="false" ipc-concordant="G05F3/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/245</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>producing a voltage or current as a predetermined function of the temperature</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="15" additional-only="false" sort-key="G05F3/247" definition-exists="false" ipc-concordant="G05F3/24" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/247</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>producing a voltage or current as a predetermined function of the supply voltage</text></CPC-specific-text></title-part></class-title></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="G05F3/26" definition-exists="false" ipc-concordant="G05F3/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/26</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Current mirrors</text></title-part></class-title>
<classification-item breakdown-code="false" not-allocatable="false" level="14" additional-only="false" sort-key="G05F3/262" definition-exists="false" ipc-concordant="G05F3/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/262</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using field-effect transistors only</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="14" additional-only="false" sort-key="G05F3/265" definition-exists="false" ipc-concordant="G05F3/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/265</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using bipolar transistors only</text></CPC-specific-text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="14" additional-only="false" sort-key="G05F3/267" definition-exists="false" ipc-concordant="G05F3/26" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/267</classification-symbol><class-title date-revised="2013-01-01"><title-part><CPC-specific-text><text>using both bipolar and field-effect technology</text></CPC-specific-text></title-part></class-title></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="13" additional-only="false" sort-key="G05F3/30" definition-exists="false" ipc-concordant="G05F3/30" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F3/30</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Regulators using the difference between the base-emitter voltages of two bipolar transistors operating at different current densities </text><reference><text><class-ref scheme="cpc">G05F3/26</class-ref> takes precedence</text></reference></title-part></class-title></classification-item></classification-item></classification-item></classification-item></classification-item></classification-item></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="G05F5/00" definition-exists="false" ipc-concordant="G05F5/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F5/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Systems for regulating electric variables by detecting deviations in the electric input to the system and thereby controlling a device within the system to obtain a regulated output</text></title-part></class-title></classification-item>
<classification-item breakdown-code="false" not-allocatable="false" level="7" additional-only="false" sort-key="G05F7/00" definition-exists="true" ipc-concordant="G05F7/00" c-set-base-allowed="false" c-set-subsequent-allowed="true" date-revised="2013-01-01" status="published"><classification-symbol>G05F7/00</classification-symbol><class-title date-revised="2013-01-01"><title-part><text>Regulating magnetic variables </text><reference><text>details of apparatus for measuring magnetic variables involving magnetic resonance <class-ref scheme="cpc">G01R33/28</class-ref></text></reference></title-part></class-title></classification-item></classification-item></classification-item></class-scheme>