H01FMAGNETSINDUCTANCESTRANSFORMERSSELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ceramics based on ferrites C04B35/26; alloys C22C ; construction of loading coils H01B; loudspeakers, microphones, gramophone pick-ups or like acoustic electromechanical transducers H04R; thermomagnetic devices H10N15/00In this subclass, inductances and transformers are regarded as being "for power supply" if they are intended for this purpose even in systems operating at frequencies above 60 cycles/sec.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. H01F1/00 H01F1/00Magnets or magnetic bodies characterised by the magnetic materials thereforSelection of materials for their magnetic propertiesAttention is drawn to Note (3) after the title of section C, which Note indicates to which version of the periodic table of chemical elements the IPC refers. In this group, the Periodic System used is the 8 group system indicated by Roman numerals in the Periodic Table thereunder.Group H01F1/0036 takes precedence over groups H01F1/09, H01F1/11, H01F1/20, H01F1/33 and H01F1/36 H01F1/0009Antiferromagnetic materials, i.e. materials exhibiting a Néel transition temperature H01F1/0036 takes precedence H01F1/0018Diamagnetic or paramagnetic materials, i.e. materials with low susceptibility and no hysteresis H01F1/0036 takes precedence H01F1/0027Thick magnetic films forming thick magnetic films H01F41/16 H01F1/0036showing low dimensional magnetism, i.e. spin rearrangements due to a restriction of dimensions, e.g. showing giant magnetoresistivity, H01F1/153, H01F1/42 and H01F10/00 take precedence; magnetoresistive sensors G01D5/16, G01R33/06; magnetoresistive recording G11B5/39; magnetic-field-controlled resistors H10N50/10 H01F1/0045Zero dimensional, e.g. nanoparticles, soft nanoparticles for medical/biological use preparation of fullerenes in general C01B32/15 H01F1/0054Coated nanoparticles, e.g. nanoparticles coated with organic surfactant H01F1/0063in a non-magnetic matrix, e.g. granular solids granular films H01F10/007 H01F1/0072one dimensional, i.e. linear or dendritic nanostructures H01F1/0081in a non-magnetic matrix, e.g. Fe-nanowires in a nanoporous membrane H01F1/009bidimensional, e.g. nanoscale period nanomagnet arrays H01F10/007 takes precedence H01F1/01of inorganic materials H01F1/44 takes precedence H01F1/012adapted for magnetic entropy change by magnetocaloric effect, e.g. used as magnetic refrigerating material refrigeration systems using magnetic effects F25B21/00 H01F1/015Metals or alloys H01F1/017Compounds H01F1/03characterised by their coercivity H01F1/40 takes precedence H01F1/0302characterised by unspecified or heterogeneous hardness or specially adapted for magnetic hardness transitions H01F1/0304adapted for large Barkhausen jumps or domain wall rotations, e.g. WIEGAND or MATTEUCCI effect H01F1/143 and H01F1/15391 take precedence H01F1/0306Metals or alloys, e.g. LAVES phase alloys of the MgCu₂-type H01F1/0304 takes precedence H01F1/0308with magnetic shape memory [MSM], i.e. with lattice transformations driven by a magnetic field, e.g. Heusler alloys H01F1/0311Compounds H01F1/0304 takes precedence H01F1/0313Oxidic compounds H01F1/0315Ferrites H01F1/0317Manganites H01F1/032of hard-magnetic materials H01F1/04metals or alloys H01F1/047Alloys characterised by their composition In groups H01F1/053 - H01F1/059, an alloy is classified in the last appropriate place H01F1/053containing rare earth metals H01F1/0533in a bonding agent H01F1/0536sintered H01F1/055and magnetic transition metals, e.g. SmCo₅ H01F1/0551in the form of particles, e.g. rapid quenched powders or ribbon flakes H01F1/0552with a protective layer H01F1/0553obtained by reduction or by hydrogen decrepitation or embrittlement H01F1/0555pressed, sintered or bonded together H01F1/0556pressed H01F1/0557sintered H01F1/0558bonded together H01F1/057and IIIa elements, e.g. Nd₂Fe₁₄B H01F1/0571in the form of particles, e.g. rapid quenched powders or ribbon flakes H01F1/0572with a protective layer H01F1/0573obtained by reduction or by hydrogen decrepitation or embrittlement H01F1/0574obtained by liquid dynamic compaction H01F1/0575pressed, sintered or bonded together H01F1/0576pressed, e.g. hot working H01F1/0577sintered H01F1/0578bonded together H01F1/0579with exchange spin coupling between hard and soft nanophases, e.g. nanocomposite spring magnets H01F1/058and IVa elements, e.g. Gd₂Fe₁₄C H01F1/059and Va elements, e.g. Sm₂Fe₁₇N₂ H01F1/0593of tetragonal ThMn₁₂-structure H01F1/0596of rhombic or rhombohedral Th₂Zn₁₇ structure or hexagonal Th₂Ni₁₇ structure H01F1/06in the form of particles, e.g. powder H01F1/047 takes precedence ; record carriers G11B5/70605 H01F1/061with a protective layer H01F1/063with a non magnetic core H01F1/065obtained by a reduction H01F1/066obtained by liquid dynamic compaction H01F1/068having a L10 crystallographic structure, e.g. [Co,Fe][Pt,Pd] (nano)particles H01F1/08pressed, sintered, or bound together H01F1/083in a bonding agent H01F1/086sintered H01F1/09mixtures of metallic and non-metallic particlesmetallic particles having oxide skin H01F1/10non-metallic substances, e.g. ferrites , e.g. [(Ba,Sr)O(Fe₂O₃)₆] ferrites with hexagonal structure H01F1/11in the form of particles for magnetic record carriers G11B5/70626 H01F1/111with a non-magnetic core H01F1/112with a skin H01F1/113 takes precedence H01F1/113in a bonding agent H01F1/117Flexible bodies H01F1/12of soft-magnetic materials H01F1/14metals or alloys H01F1/143in the form of wires H01F1/147 takes precedence H01F1/147Alloys characterised by their composition treatment thereof for enhancing their electromagnetic properties C21D8/12 In groups H01F1/14708 - H01F1/15391, an alloy is classified in the last appropriate place H01F1/14708Fe-Ni based alloys pure Fe or Ni H01F1/14, H01F1/16 or H01F1/20 H01F1/14716in the form of sheets H01F1/14725with insulating coating H01F1/14733in the form of particles H01F1/14741pressed, sintered or bonded together H01F1/1475the particles being insulated H01F1/14758by macromolecular organic substances H01F1/14766Fe-Si based alloys H01F1/14775in the form of sheets H01F1/14783with insulating coating H01F1/14791Fe-Si-Al based alloys, e.g. Sendust H01F1/153Amorphous metallic alloys, e.g. glassy metals making ferrous amorphous alloys C22C33/003 H01F1/15308based on Fe/Ni H01F1/15325 takes precedence H01F1/15316based on Co H01F1/15325 takes precedence H01F1/15325containing rare earths H01F1/15333containing nanocrystallites, e.g. obtained by annealing H01F1/15341Preparation processes therefor H01F1/1535by powder metallurgy, e.g. spark erosion H01F1/15358Making agglomerates therefrom, e.g. by pressing H01F1/15366using a binder H01F1/15375using polymers H01F1/15383Applying coatings thereon H01F1/15366 takes precedence H01F1/15391Elongated structures, e.g. wires H01F1/16in the form of sheets H01F1/147 takes precedence H01F1/18with insulating coating H01F1/20in the form of particles, e.g. powder H01F1/147 takes precedence H01F1/22pressed, sintered, or bound together H01F1/24the particles being insulated H01F1/26by macromolecular organic substances H01F1/28dispersed or suspended in a bonding agent H01F1/33mixtures of metallic and non-metallic particlesmetallic particles having oxide skin H01F1/34non-metallic substances, e.g. ferrites H01F1/342Oxides H01F1/36 and H01F1/38 take precedence H01F1/344Ferrites, e.g. having a cubic spinel structure (X2+O)(Y23+O3), e.g. magnetite Fe₃O₄ H01F1/346[(TO4) 3] with T= Si, Al, Fe, Ga H01F10/24 takes precedence; Faraday rotators G02F1/09 H01F1/348Hexaferrites with decreased hardness or anisotropy, i.e. with increased permeability in the microwave (GHz) range, e.g. having a hexagonal crystallographic structure H01F1/36in the form of particles H01F1/346, H01F1/348 and H01F1/38 take precedence H01F1/37in a bonding agent H01F1/375Flexible bodies H01F1/38amorphous, e.g. amorphous oxides H01F1/40of magnetic semiconductor materials, e.g. CdCr₂S₄ devices using galvano-magnetic or similar effects H10N50/00 H01F1/401diluted In group H01F1/401, a diluted magnetic semiconductor (DMS) is classified in the last appropriate place H01F1/402of II-VI type, e.g. Zn1-x Crx Se H01F1/404of III-V type, e.g. In1-x Mnx As H01F1/405of IV type, e.g. Ge1-xMnx H01F1/407Diluted non-magnetic ions in a magnetic cation-sublattice, e.g. perovskites, La1-x(Ba,Sr)xMnO3 H01F1/408half-metallic, i.e. having only one electronic spin direction at the Fermi level, e.g. CrO₂, Heusler alloys H01F10/1936 takes precedence H01F1/42of organic or organo-metallic materials , e.g. grapheneH01F1/44 takes precedence H01F1/44of magnetic liquids, e.g. ferrofluids particles in a bonding agent H01F1/28, H01F1/36, H01F1/37 H01F1/442the magnetic component being a metal or alloy, e.g. Fe H01F1/447 takes precedence H01F1/445the magnetic component being a compound, e.g. Fe₃O₄ H01F1/447 takes precedence H01F1/447characterised by magnetoviscosity, e.g. magnetorheological, magnetothixotropic, magnetodilatant liquids electrorheological fluids C10M171/001 H01F3/00Cores, Yokes, or armatures magnetic materials H01F1/00; permanent magnets H01F7/02 H01F2003/005Magnetic cores for receiving several windings with perpendicular axes, e.g. for antennae or inductive power transfer H01F3/02made from sheets H01F3/04made from strips or ribbons H01F3/06made from wires H01F3/08made from powder powder coatings on sheets H01F3/02; on strips or ribbons H01F3/04; on wires H01F3/06 H01F3/10Composite arrangements of magnetic circuits H01F2003/103Magnetic circuits with permanent magnets H01F2003/106Magnetic circuits using combinations of different magnetic materials H01F3/12Magnetic shunt paths H01F3/14ConstrictionsGaps, e.g. air-gaps in magnetic shunt paths H01F3/12 H01F5/00Coils superconducting coils H01F6/06; fixed inductances of the signal type H01F17/00 H01F5/003Printed circuit coils H01F2005/006with conical spiral form H01F5/02wound on non-magnetic supports, e.g. formers H01F2005/022wound on formers with several winding chambers separated by flanges, e.g. for high voltage applications H01F2005/025wound on coaxial arrangement of two or more formers H01F2005/027wound on formers for receiving several coils with perpendicular winding axes, e.g. for antennae or inductive power transfer H01F5/04Arrangements of electric connections to coils, e.g. leads H01F2005/043having multiple pin terminals, e.g. arranged in two parallel lines at both sides of the coil H01F2005/046Details of formers and pin terminals related to mounting on printed circuits H01F5/06Insulation of windings H01F6/00Superconducting magnetsSuperconducting coils magnetic resonance assemblies using superconducting coil systems G01R33/3815 H01F2006/001Constructive details of inductive current limiters H01F6/003Methods and means for discharging superconductive storage superconducting alloys C22C; static memories with superconducting elements G11C11/44; superconducting circuit breakers with contacts H01H33/004; superconducting switches for low power H03K17/92; superconducting material H10N60/00; power cryotons H10N60/355 H01F6/005Methods and means for increasing the stored energy in superconductive coils by increments (flux pumps) H01F6/006Supplying energising or de-energising current; Flux pumps H01F6/008Electric circuit arrangements for energising superconductive electromagnets H01F6/02QuenchingProtection arrangements during quenching protection circuits H02H7/001 H01F6/04Cooling H01F6/06Coils, e.g. winding, insulating, terminating or casing arrangements therefor H01F6/065Feed-through bushings, terminals and joints leading of conductors or axles through casings of transformers H01F27/04 H01F7/00Magnets superconducting magnets H01F6/00; for separation of solid materials or fluids B03C1/00; for bench or like work-holders B23B31/28, B23Q3/00; work-holding devices B25B11/00; lifting magnets B66C1/00; operating or controlling locks using permanent magnets E05B47/0038; devices for holding a wing, e.g. door or window, by magnetic or electromagnetic attraction E05C19/16; relieving load or bearings using magnetic means F16C39/06 ; for electric meters G01R; for relays H01H; for electric discharge tubes H01J, e.g. H01J3/24, H01J23/10, H01J29/68 ; for dynamo-electric machines H02K H01F7/02Permanent magnets [PM] H01F7/0205Magnetic circuits with PM in general H01F7/021Construction of PM H01F7/0278 takes precedence; PM compositions H01F1/032 H01F7/0215Flexible forms, sheets H01F7/0221Mounting means for PM, supporting, coating, encapsulating PM H01F7/0226PM with variable field strength H01F7/0284 takes precedence H01F7/0231Magnetic circuits with PM for power or force generation H01F7/0236Magnetic suspension or levitation for vehicles B60L13/04; magnetic bearings F16C39/063 H01F7/0242Magnetic drives, magnetic coupling devices H01F7/0247Orientating, locating, transporting arrangements H01F7/0252PM holding devices H01F7/021, H01F7/0215, H01F7/0226 take precedence H01F7/0257Lifting, pick-up magnetic objects H01F7/0263Closures, bags, bands, engagement devices with male and female parts H01F7/0268Magnetic cylinders H01F7/0273Magnetic circuits with PM for magnetic field generation H01F7/0278for generating uniform fields, focusing, deflecting electrically charged particles for magnetic separation by Lorentz force B03C1/023; specially adapted for NMR applications G01R33/383 H01F7/0284using a trimmable or adjustable magnetic circuit, e.g. for a symmetric dipole or quadrupole magnetic field H01F7/0289Transducers, loudspeakers, moving coil arrangements H01F7/0294Detection, inspection, magnetic treatment H01F7/04Means for releasing the attractive force H01F7/06ElectromagnetsActuators including electromagnets electric coils H01F5/00; devices for holding workpieces using electric force B23Q3/15; load-engaging elements for lifting articles electromagnetically B66C1/06; electromagnetic couplings F16D27/00; magnetic brakes F16D63/002; electromagnetically operated valves F16K11/24, F16K31/00; analysing materials by magnetic means G01N27/72, G01N27/80; electromagnets for winding mechanical clocks G04C1/02; electromagnetic relays H01H51/00; windings for salient poles of dynamo-electric machines H02K3/18; electromagnets for telegraphic communication H04L; for arc lamps H05B31/28 H01F2007/062Details of terminals or connectors for electromagnets H01F7/064Circuit arrangements for actuating electromagnets circuit arrangements for obtaining special operating characteristics H01F7/18; driving circuits for electromagnets making use of a switching regulator H01H47/325 H01F7/066Electromagnets with movable winding H01F2007/068using printed circuit coils H01F7/08with armatures H01F7/081Magnetic constructions H01F2007/083External yoke surrounding the coil bobbin, e.g. made of bent magnetic sheet H01F2007/085Yoke or polar piece between coil bobbin and armature having a gap, e.g. filled with nonmagnetic material H01F2007/086Structural details of the armature H01F7/088provided with means for absorbing shocks H01F7/10specially adapted for alternating current H01F7/11reducing or eliminating the effects of eddy currents H01F7/12having anti-chattering arrangements H01F7/1205having short-circuited conductors electromagnetic relays provided with short-circuited conducting sleeves H01H47/00 H01F7/121Guiding or setting position of armatures, e.g. retaining armatures in their end position H01F7/122by permanent magnets H01F7/1615, H01F7/1646 take precedence H01F7/123by ancillary coil H01F7/124by mechanical latch, e.g. detent H01F7/126Supporting or mounting H01F7/127Assembling H01F7/128Encapsulating, encasing or sealing H01F7/129of armatures H01F7/13characterised by pulling-force characteristics H01F7/14Pivoting armatures H01F7/17 takes precedence H01F7/145Rotary electromagnets with variable gap with fixed gap or torque motors H02K26/00 H01F7/16Rectilinearly-movable armatures H01F7/17 takes precedence H01F7/1607Armatures entering the winding H01F7/1615Armatures or stationary parts of magnetic circuit having permanent magnet H01F7/1623Armatures having T-form H01F2007/163with axial bearing H01F7/1638Armatures not entering the winding H01F7/1646Armatures or stationary parts of magnetic circuit having permanent magnet H01F7/1653Magnetic circuit having axially spaced pole-pieces H01F2007/1661Electromagnets or actuators with anti-stick disc H01F2007/1669Armatures actuated by current pulse, e.g. bistable actuators H01F2007/1676Means for avoiding or reducing eddy currents in the magnetic circuit, e.g. radial slots H01F2007/1684Armature position measurement using coils H01F2007/1692Electromagnets or actuators with two coils H01F7/17Pivoting and rectilinearly-movable armatures H01F7/18Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings H01F7/1805Circuit arrangements for holding the operation of electromagnets or for holding the armature in attracted position with reduced energising current for holding relay armature in attracted position with reduced energising current H01H47/04; quick energising of electro-dynamic machines H02P9/08; for quickly de-energising of dynamo-electric generators H02P9/123 H01F7/1811demagnetising upon switching off, removing residual magnetism H01F7/1816making use of an energy accumulator for relays H01H47/043 H01F2007/1822using a capacitor to produce a boost voltage H01F7/1827by changing number of serially-connected turns or windings for relays H01H47/06 H01F7/1833by changing number of parallel-connected turns or windings for relays H01H47/08 H01F7/1838by switching-in or -out impedance for relays H01H47/10 H01F7/1844Monitoring or fail-safe circuits for relays H01H47/002 H01F2007/185with armature position measurement H01F2007/1855using a stored table to deduce one variable from another H01F2007/1861using derivative of measured variable H01F2007/1866with regulation loop H01F7/1872Bistable or bidirectional current devices relays H01H47/226 H01F7/1877controlling a plurality of loads H01F7/1883by steepening leading and trailing edges of magnetisation pulse, e.g. printer drivers H01F2007/1888using pulse width modulation H01F2007/1894minimizing impact energy on closure of magnetic circuit H01F7/20without armatures cores H01F3/00; coils H01F5/00 ; shaping metal by applying magnetic forces B21D26/14; electromagnets specially adapted for NMR applications G01R33/381 H01F7/202Electromagnets for high magnetic field strength for superconducting electromagnets H01F6/00; for transformers or inductances without a magnetic core H01F30/08 H01F7/204Circuits for energising or de-energising H01F7/206Electromagnets for lifting, handling or transporting of magnetic pieces or material electromagnets for guidance of vehicles, workpieces B65G21/2009; for magnetic suspension or levitation H02N15/00 H01F2007/208combined with permanent magnets H01F10/00Thin magnetic films, e.g. of one-domain structure magnetic record carriers G11B5/00; thin-film magnetic stores G11C H01F10/002Antiferromagnetic thin films, i.e. films exhibiting a Néel transition temperature H01F10/3218 and H01F10/3268 take precedence H01F10/005organic or organo-metallic films, e.g. monomolecular films obtained by Langmuir-Blodgett technique, graphene H01F10/007ultrathin or granular films H01F10/005 and H01F10/3227 take precedence; applying ultrathin or granular layers to substrates H01F41/301 H01F10/06characterised by the coupling or physical contact with connecting or interacting conductors H01F10/08characterised by magnetic layers H01F10/32 takes precedence ; applying thin magnetic films to substrates H01F41/14 H01F10/10characterised by the composition H01F10/12being metals or alloys intermetallic compounds H01F10/18 H01F10/123having a L10 crystallographic structure, e.g. [Co,Fe][Pt,Pd] thin films H01F10/126containing rare earth metals H01F10/133 takes precedence H01F10/13Amorphous metallic alloys, e.g. glassy metals H01F10/3204 takes precedenceIn this group, amorphous metallic alloys are classified in the last appropriate place H01F10/131containing iron or nickel H01F10/132containing cobalt H01F10/133containing rare earth metals H01F10/135containing transition metals H01F10/136containing iron H01F10/137containing cobalt H01F10/138containing nanocrystallites, e.g. obtained by annealing H01F10/14containing iron or nickel H01F10/126 , H01F10/13, H01F10/16 take precedenceIn this group, alloys containing iron or nickel are classified in the last appropriate place H01F10/142containing Si H01F10/145containing Al, e.g. SENDUST H01F10/147with lattice under strain, e.g. expanded by interstitial nitrogen H01F10/26 - H01F10/30 take precedence H01F10/16containing cobalt H01F10/126 , H01F10/13 take precedence H01F10/18being compounds H01F10/187Amorphous compounds H01F10/3204 takes precedence H01F10/193Magnetic semiconductor compounds in general H01F1/40; multilayers, e.g. superlattices H01F10/3213 H01F10/1933Perovskites H01F10/1936Half-metallic, e.g. epitaxial CrO₂ or NiMnSb films H01F10/20Ferrites H01F10/205Hexagonal ferrites H01F10/22Orthoferrites , e.g. RFeO₃ (R= rare earth element) with orthorhombic structure H01F10/24Garnets in general H01F1/346; multilayers, e.g. superlattices H01F10/3209; applying magnetic garnet films to substrates by sputtering H01F41/186 H01F10/245Modifications for enhancing interaction with electromagnetic wave energy H01F10/26characterised by the substrate or intermediate layers H01F10/06 and H01F10/32 take precedence H01F10/265Magnetic multilayers non exchange-coupled H01F10/32 takes precedence H01F10/28characterised by the composition of the substrate H01F10/30characterised by the composition of the intermediate layers , e.g. seed, buffer, template, diffusion preventing, cap layers H01F10/06 and H01F10/32 take precedence H01F10/32Spin-exchange-coupled multilayers, e.g. nanostructured superlattices applying spin-exchange-coupled multilayers to substrates H01F41/302 H01F10/3204Exchange coupling of amorphous multilayers H01F10/3209Exchange coupling of garnet multilayers H01F10/3213Exchange coupling of magnetic semiconductor multilayers, e.g. MnSe/ZnSe superlattices semiconductor materials for use in semiconductor devices H01L29/12 H01F10/3218Exchange coupling of magnetic films via an antiferromagnetic interface H01F10/3268 takes precedence H01F10/3222Exchange coupled hard/soft multilayers, e.g. CoPt/Co or NiFe/CoSm nanocomposite spring magnets H01F1/0579 H01F10/3227Exchange coupling via one or more magnetisable ultrathin or granular films H01F10/3231via a non-magnetic spacer H01F10/3236made of a noble metal, e.g.(Co/Pt) n multilayers having perpendicular anisotropy H01F10/3286 takes precedence H01F10/324Exchange coupling of magnetic film pairs via a very thin non-magnetic spacer, e.g. by exchange with conduction electrons of the spacer H01F10/3245the spacer being superconductive H01F10/325the spacer being noble metal H01F10/3254the spacer being semiconducting or insulating, e.g. for spin tunnel junction [STJ] H01F10/3259Spin-exchange-coupled multilayers comprising at least a nanooxide layer [NOL], e.g. with a NOL spacer H01F10/3263the exchange coupling being symmetric, e.g. for dual spin valve, e.g. NiO/Co/Cu/Co/Cu/Co/NiO H01F10/3268the exchange coupling being asymmetric, e.g. by use of additional pinning, by using antiferromagnetic or ferromagnetic coupling interface, i.e. so-called spin-valve [SV] structure, e.g. NiFe/Cu/NiFe/FeMn H01F10/3272by use of anti-parallel coupled [APC] ferromagnetic layers, e.g. artificial ferrimagnets [AFI], artificial [AAF] or synthetic [SAF] anti-ferromagnets H01F10/3277by use of artificial ferrimagnets [AFI] only H01F10/3281only by use of asymmetry of the magnetic film pair itself, i.e. so-called pseudospin valve [PSV] structure, e.g. NiFe/Cu/Co H01F10/3286Spin-exchange coupled multilayers having at least one layer with perpendicular magnetic anisotropy H01F10/329Spin-exchange coupled multilayers wherein the magnetisation of the free layer is switched by a spin-polarised current, e.g. spin torque effect H01F10/3295Spin-exchange coupled multilayers wherein the magnetic pinned or free layers are laminated without anti-parallel coupling within the pinned and free layers H01F13/00Apparatus or processes for magnetising or demagnetising devices for holding workpieces using magnetic or electric force acting directly on the workpieces B23Q3/15 ; for degaussing ships B63G9/06; for clocks or watches G04D9/00; recording or erasing of information on magnetic record carriers G11B5/00 ; demagnetising arrangements for colour television H04N9/29 H01F13/003Methods and devices for magnetising permanent magnets permanent magnets H01F7/02 H01F13/006Methods and devices for demagnetising of magnetic bodies, e.g. workpieces, sheet material for erasing of information on magnetic record carriers G11B5/00 H01F17/00Fixed inductances of the signal type coils in general H01F5/00 inductors without a potential-jump or surface barrier specially adapted for integrated circuits, details thereof and multistep manufacturing processes therefor H01L28/10 H01F17/0006Printed inductances printed coils for dynamo-electric machines H02K3/26; printed circuits H05K H01F17/0013with stacked layers H01F2017/002Details of via holes for interconnecting the layers H01F2017/0026Multilayer LC-filter H01F17/0033with the coil helically wound around a magnetic core H01F2017/004with the coil helically wound around an axis without a core H01F2017/0046with a conductive path having a bridge H01F2017/0053with means to reduce eddy currents H01F2017/006flexible printed inductors H01F2017/0066with a magnetic layer H01F2017/0073with a special conductive pattern, e.g. flat spiral H01F2017/008Electric or magnetic shielding of printed inductances H01F2017/0086on semiconductor substrate inductors for integrated circuits H01L28/10 H01F2017/0093Common mode choke coil H01F17/02without magnetic core H01F17/03with ceramic former H01F17/04with magnetic core H01F17/041Means for preventing rotation or displacement of the core H01F17/043with two, usually identical or nearly identical parts enclosing completely the coil (pot cores) H01F17/045with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core H01F2017/046helical coil made of flat wire, e.g. with smaller extension of wire cross section in the direction of the longitudinal axis H01F2017/048with encapsulating core, e.g. made of resin and magnetic powder H01F17/06with core substantially closed in itself, e.g. toroid H01F17/062Toroidal core with turns of coil around it H01F2017/065Core mounted around conductor to absorb noise, e.g. EMI filter H01F2017/067Core with two or more holes to lead through conductor H01F17/08Loading coils for telecommunication circuits H01F19/00Fixed transformers or mutual inductances of the signal type H01F36/00 takes precedence H01F19/02Audio-frequency transformers or mutual inductances, i.e. not suitable for handling frequencies considerably beyond the audio range H01F19/04Transformers or mutual inductances suitable for handling frequencies considerably beyond the audio range resonant circuits H03H H01F19/06Broad-band transformers, e.g. suitable for handling frequencies well down into the audio range H01F19/08Transformers having magnetic bias, e.g. for handling pulses H01F2019/085Transformer for galvanic isolation H01F21/00Variable inductances or transformers of the signal type H01F36/00 takes precedence H01F21/005Inductances without magnetic core H01F21/02continuously variable, e.g. variometers H01F21/04by relative movement of turns or parts of windings H01F21/06by movement of core or part of core relative to the windings as a whole H01F21/065Measures for obtaining a desired relation between the position of the core and the inductance H01F21/08by varying the permeability of the core, e.g. by varying magnetic bias H01F21/10by means of a movable shield H01F21/12discontinuously variable, e.g. tapped H01F2021/125Printed variable inductor with taps, e.g. for VCO H01F27/00Details of transformers or inductances, in general H01F27/002Arrangements provided on the transformer facilitating its transport H01F27/004Arrangements for interchanging inductances, transformers or coils thereof H01F27/006with special arrangement or spacing of turns of the winding(s), e.g. to produce desired self-resonance H01F27/008with temperature compensation H01F27/02Casings H01F27/022Encapsulation H01F27/025Constructional details relating to cooling H01F27/027specially adapted for combination of signal type inductors or transformers with electronic circuits, e.g. mounting on printed circuit boards H01F27/04Leading of conductors or axles through casings, e.g. for tap-changing arrangements H01F27/06Mounting, supporting or suspending transformers, reactors or choke coils not being of the signal type H01F2027/065Mounting on printed circuit boards H01F27/08Cooling heat-transfer elements F28FVentilating structural details of casings H01F27/02 H01F27/085Cooling by ambient air H01F27/10Liquid cooling H01F27/105Cooling by special liquid or by liquid of particular composition H01F27/12Oil cooling H01F27/125Cooling by synthetic insulating and incombustible liquid H01F27/14Expansion chambersOil conservatorsGas cushionsArrangements for purifying, drying, or filling H01F27/16Water cooling H01F27/18by evaporating liquids H01F27/20Cooling by special gases or non-ambient air H01F27/22Cooling by heat conduction through solid or powdered fillings H01F27/23Corrosion protection H01F27/24Magnetic cores H01F27/245made from sheets, e.g. grain-oriented H01F27/26 takes precedence H01F27/2455using bent laminations H01F27/25made from strips or ribbons H01F27/26 takes precedence H01F27/255made from particles H01F27/26 takes precedence H01F27/26Fastening parts of the core togetherFastening or mounting the core on casing or support on coil H01F27/30 H01F27/263Fastening parts of the core together H01F27/266Fastening or mounting the core on casing or support on coil H01F27/30 H01F27/28CoilsWindingsConductive connections H01F27/2804Printed windings H01F2027/2809on stacked layers H01F2027/2814with only part of the coil or of the winding in the printed circuit board, e.g. the remaining coil or winding sections can be made of wires or sheets H01F2027/2819Planar transformers with printed windings, e.g. surrounded by two cores and to be mounted on printed circuit H01F27/2823Wires H01F27/2866 takes precedence H01F27/2828Construction of conductive connections, of leads H01F2027/2833using coaxial cable as wire H01F2027/2838using transposed wires H01F2027/2842Wire coils wound in conical zigzag to reduce voltage between winding turns H01F27/2847Sheets; Strips H01F27/2866 takes precedence H01F27/2852Construction of conductive connections, of leads H01F2027/2857Coil formed from wound foil conductor H01F2027/2861Coil formed by folding a blank H01F27/2866Combination of wires and sheets H01F27/2871Pancake coils H01F27/2876Cooling cooling transformers and inductances in general H01F27/08 H01F27/288Shielding H01F27/2885with shields or electrodes shields or electrodes for pancake coils H01F27/2871; construction of electric or magnetic shields or screens H01F27/36 H01F27/289with auxiliary windings for pancake coils H01F27/2871 H01F27/2895Windings disposed upon ring cores H01F27/29TerminalsTapping arrangements for signal inductances H01F27/292Surface mounted devices H01F2027/295with flexible terminals H01F2027/297with pin-like terminal to be inserted in hole of printed path H01F27/30Fastening or clamping coils, windings, or parts thereof togetherFastening or mounting coils or windings on core, casing, or other support H01F27/303Clamping coils, windings or parts thereof together H01F27/306Fastening or mounting coils or windings on core, casing or other support H01F27/32Insulating of coils, windings, or parts thereof H01F27/321using a fluid for insulating purposes only H01F27/322the insulation forming channels for circulation of the fluid H01F27/323Insulation between winding turns, between winding layers H01F27/324Insulation between coil and core, between different winding sections, around the coil; Other insulation structures H01F27/325Coil bobbins formers for coils in general H01F5/02 H01F27/326specifically adapted for discharge lamp ballasts H01F27/327Encapsulating or impregnating encapsulating coil and core H01F27/022 H01F2027/328Dry-type transformer with encapsulated foil winding, e.g. windings coaxially arranged on core legs with spacers for cooling and with three phases H01F2027/329Insulation with semiconducting layer, e.g. to reduce corona effect H01F27/33Arrangements for noise damping H01F27/34Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields H01F27/341Preventing or reducing no-load losses or reactive currents H01F27/343Preventing or reducing surge voltages; oscillations H01F27/345using auxiliary conductors H01F27/346Preventing or reducing leakage fields using magnetic shields H01F27/36; using auxiliary windings H01F27/38 H01F2027/348Preventing eddy currents H01F27/36Electric or magnetic shields or screens movable for varying inductance H01F21/10 H01F27/361made of combinations of electrically conductive material and ferromagnetic material H01F27/363made of electrically conductive material H01F27/366made of ferromagnetic material H01F27/38Auxiliary core membersAuxiliary coils or windings H01F27/385for reducing harmonics H01F27/40Structural association with built-in electric component, e.g. fuse H01F27/402Association of measuring or protective means H01F2027/404Protective devices specially adapted for fluid filled transformers H01F2027/406Temperature sensor or protection H01F2027/408Association with diode or rectifier H01F27/42Circuits specially adapted for the purpose of modifying, or compensating for, electric characteristics of transformers, reactors, or choke coils circuits for controlling transformers, reactors or choke coils, for the purpose of obtaining a desired output H02P13/00; impedance networks H03H H01F27/422for instrument transformers H01F27/425for voltage transformers H01F27/427for current transformers H01F29/00Variable transformers or inductances not covered by group H01F21/00 tap change devices H01H9/0005 H01F29/02with tappings on coil or windingwith provision for rearrangement or interconnection of windings H01F29/025Constructional details of transformers or reactors with tapping on coil or windings H01F29/04having provision for tap-changing without interrupting the load current H01F29/06with current collector gliding or rolling on or along winding H01F29/08with core, coil, winding, or shield movable to offset variation of voltage or phase shift, e.g. induction regulators H01F29/10having movable part of magnetic circuit high leakage transformers H01F38/08; dynamo-electric machines with movable part of magnetic circuit H02K23/44, H02K23/48 H01F29/12having movable coil, winding, or part thereofhaving movable shield H01F29/14with variable magnetic bias amplitude modulation by means of variable impedance element H03C1/08 ; magnetic amplifiers H03F; circuits for automatic telephonic communication H04M3/00 H01F2029/143with control winding for generating magnetic bias H01F29/146Constructional details H01F30/00Fixed transformers not covered by group H01F19/00 H01F30/02Auto-transformers H01F30/04having two or more secondary windings, each supplying a separate load, e.g. for radio set power supplies H01F30/06characterised by the structure H01F30/08without magnetic core H01F30/10Single-phase transformers H01F30/16 takes precedence H01F30/12Two-phase, three-phase or polyphase transformers H01F30/14for changing the number of phases H01F30/16Toroidal transformers H01F36/00Transformers with superconductive windings or with windings operating at cryogenic temperature superconducting magnets or superconducting coils H01F6/00 H01F37/00Fixed inductances not covered by group H01F17/00 H01F37/005without magnetic core H01F38/00Adaptations of transformers or inductances for specific applications or functions H01F2038/003High frequency transformer for microwave oven H01F2038/006matrix transformer consisting of several interconnected individual transformers working as a whole H01F38/02for non-linear operation H01F38/023of inductances H01F2038/026non-linear inductive arrangements for converters, e.g. with additional windings H01F38/04for frequency changing H01F38/06for changing the wave shape H01F38/08High-leakage transformers or inductances H01F38/085Welding transformers H01F38/10Ballasts, e.g. for discharge lamps H01F38/12Ignition, e.g. for IC engines H01F2038/122with rod-shaped core H01F2038/125with oil insulation H01F2038/127with magnetic circuit including permanent magnet H01F38/14Inductive couplings for wireless supply or distribution of electric power using inductive coupling H02J50/10 H01F2038/143for signals H01F2038/146in combination with capacitive coupling H01F38/16Cascade transformers, e.g. for use with extra high tension H01F38/18Rotary transformers H01F38/20Instruments transformers H01F38/22for single phase ac H01F38/24Voltage transformers H01F38/26Constructions H01F38/28Current transformers H01F38/30Constructions H01F2038/305with toroidal magnetic core H01F38/32Circuit arrangements H01F38/34Combined voltage and current transformers H01F38/36Constructions H01F38/38for polyphase ac H01F38/40for dc H01F38/42Flyback transformers H01F2038/423with adjusting potentiometers H01F2038/426with gap in transformer core H01F41/00Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformersApparatus or processes specially adapted for manufacturing materials characterised by their magnetic propertiesGroup H01F41/30 takes precedence over groups H01F41/16 - H01F41/24 , and over group H01F41/32.
This Note corresponds to IPC Note (1) relating to H01F41/16 - H01F41/24, H01F41/32. H01F41/005Impregnating or encapsulating insulating of windings H01F41/12 H01F41/02for manufacturing cores, coils, or magnets H01F41/14 takes precedence; for dynamo-electric machines H02K15/00 H01F41/0206Manufacturing of magnetic cores by mechanical means magnetic cores per se H01F27/24 H01F41/0213Manufacturing of magnetic circuits made from strip(s) or ribbon(s) magnetic cores made by winding a ribbon H01F27/25 H01F41/022by winding the strips or ribbons around a coil H01F41/0226from amorphous ribbons H01F41/0233Manufacturing of magnetic circuits made from sheets magnetic cores made from sheets H01F27/245; soft magnetic alloys in the form of sheets H01F1/16 H01F41/024Manufacturing of magnetic circuits made from deformed sheets magnetic cores made from deformed sheets H01F27/2455 H01F41/0246Manufacturing of magnetic circuits by moulding or by pressing powder magnetic cores made by moulding or by pressing powder H01F27/255; soft magnetic particles H01F1/20, H01F1/36 H01F41/0253for manufacturing permanent magnets H01F41/026protecting methods against environmental influences, e.g. oxygen, by surface treatment magnetic particles with skin H01F1/061, H01F1/09, H01F1/24, H01F1/33 and G11B5/706 H01F41/0266Moulding; Pressing H01F41/0273 takes precedence; hard magnetic particles H01F1/06, H01F1/11 H01F41/0273Imparting anisotropy methods and devices for magnetising permanent magnets H01F13/003 H01F41/028Radial anisotropy for rotor or stator bodies H02K15/02 H01F41/0286Trimming H01F41/0293diffusion of rare earth elements, e.g. Tb, Dy or Ho, into permanent magnets H01F41/04for manufacturing coils coils for transformer or inductances H01F27/28 H01F41/041Printed circuit coils apparatus or processes for manufacturing printed circuits in general H05K3/00 H01F41/042by thin film techniques H01F41/043by thick film techniques H01F41/045Trimming H01F41/046structurally combined with ferromagnetic material H01F41/047structurally combined with superconductive material H01F41/048Superconductive coils H01F41/06Coil winding H01F41/061Winding flat conductive wires or sheets H01F41/063with insulation H01F41/064Winding non-flat conductive wires, e.g. rods, cables or cords H01F41/066with insulation H01F41/068in the form of strip material H01F41/069Winding two or more wires, e.g. bifilar winding H01F41/07Twisting H01F41/071Winding coils of special form winding conductors onto closed formers or cores H01F41/08 H01F2041/0711Winding saddle or deflection coils H01F41/073Winding onto elongate formers H01F41/074Winding flat coils H01F41/076Forming taps or terminals while winding, e.g. by wrapping or soldering the wire onto pins, or by directly forming terminals from the wire H01F41/077Deforming the cross section or shape of the winding material while winding H01F41/079Measuring electrical characteristics while winding H01F41/08Winding conductors onto closed formers or cores, e.g. threading conductors through toroidal cores H01F41/082Devices for guiding or positioning the winding material on the former H01F41/084for forming pancake coils H01F41/086in a special configuration on the former, e.g. orthocyclic coils or open mesh coils H01F41/088using revolving flyers H01F41/09Winding machines having two or more work holders or formers H01F41/092TurretsTurntables H01F41/094Tensioning or braking devices H01F41/096Dispensing or feeding devices H01F41/098MandrelsFormers H01F41/10Connecting leads to windings making electric connections in general H01R43/00 H01F41/12Insulating of windings impregnating or encapsulating of transformers H01F41/005 ; of conductors in general H01B13/06 H01F41/122Insulating between turns or between winding layers H01F41/125Other insulating structures; Insulating between coil and core, between different winding sections, around the coil H01F41/127Encapsulating or impregnating encapsulating coil and core H01F41/005 H01F41/14for applying magnetic films to substrates H01F41/16the magnetic material being applied in the form of particles, e.g. by serigraphy , to form thick magnetic films or precursors therefor H01F41/18 -H01F41/24 take precedence H01F41/18by cathode sputtering H01F41/183Sputtering targets therefor H01F41/186for applying a magnetic garnet film magnetic garnet materials H01F1/346; magnetic garnet films H01F10/24 H01F41/20by evaporation H01F41/205by laser ablation, e.g. pulsed laser deposition [PLD] H01F41/22Heat treatmentThermal decompositionChemical vapour deposition H01F41/24from liquids H01F41/26using electric currents , e.g. electroplating H01F41/28by liquid phase epitaxy H01F41/30for applying nanostructures, e.g. by molecular beam epitaxy [MBE] H01F41/301for applying ultrathin or granular layers ultrathin or granular layers H01F10/007 H01F41/302for applying spin-exchange-coupled multilayers, e.g. nanostructured superlattices spin-exchange-coupled multilayers H01F10/32 H01F41/303with exchange coupling adjustment of magnetic film pairs, e.g. interface modifications by reduction, oxidation H01F41/304using temporary decoupling, e.g. involving blocking, Néel or Curie temperature transitions by heat treatment in presence/absence of a magnetic field H01F41/305applying the spacer or adjusting its interface, e.g. in order to enable particular effect different from exchange coupling H01F41/306conductive spacer H01F41/307insulating or semiconductive spacer H01F41/308lift-off processes, e.g. ion milling, for trimming or patterning H01F41/309electroless or electrodeposition processes from plating solution H01F41/32for applying conductive, insulating or magnetic material on a magnetic film , specially adapted for a thin magnetic film H01F41/325applying a noble metal capping on a spin-exchange-coupled multilayer, e.g. spin filter deposition H01F41/34in patterns, e.g. by lithography