| Patents for H01F 27 - Details of transformers or inductances, in general (43,362) |
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| 01/28/1981 | EP0023111A1 A halogenated organic contaminant absorption process and an apparatus for carrying out the process |
| 01/27/1981 | CA1094653A1 Audio-frequency injection transformers for ripple control |
| 01/20/1981 | US4246636 Flyback transformer having terminal pins for connection to printed circuit boards |
| 01/20/1981 | US4246161 Suitable for high voltage insulation |
| 01/20/1981 | CA1094179A1 Low volume sheet-wound transformer coils with uniform temperature distribution |
| 01/13/1981 | US4245207 Miniature high frequency coil assembly or transformer |
| 01/13/1981 | US4245206 Winding structure for static electrical induction apparatus |
| 01/13/1981 | CA1093667A1 Encapsulated electrical inductive apparatus |
| 01/13/1981 | CA1093638A1 Dc-ac inverter |
| 01/13/1981 | CA1093261A1 Electrical apparatus encapsulated with resin coated filler |
| 01/07/1981 | EP0021134A1 Winding, especially high-tension winding for dry-type transformers |
| 01/07/1981 | EP0020458A1 Insulation of electrical apparatus with a synthetic transformer oil. |
| 01/06/1981 | US4243966 Electrostatic shielding of nonsequential disc windings in transformers |
| 01/06/1981 | US4243931 Current isolator |
| 01/06/1981 | US4243623 Method of encapsulating electrical apparatus |
| 12/30/1980 | US4242630 Ferroresonant voltage regulator incorporating auxiliary winding for large current magnitudes of short duration |
| 12/23/1980 | US4241324 Magnetic core for electrical transformers |
| 12/23/1980 | US4240917 Transformer using catalytically hydrogenated bright stock fluid |
| 12/16/1980 | US4240057 Inductive element construction, particularly fluorescent lamp ballast |
| 12/16/1980 | US4239998 Method for electrically insulating an electrically conducting article and product produced thereby |
| 12/10/1980 | EP0020009A1 Ignition coil with excess-pressure releasing arrangement |
| 12/09/1980 | US4238753 Transformer core gapping and lead anchoring arrangement |
| 12/09/1980 | US4238534 Colloidal silica, monobasic phosphate, fine particle oxide, chromate |
| 12/09/1980 | CA1091315A1 Transformer |
| 12/09/1980 | CA1091000A1 Electrical devices containing improved dielectric fluids |
| 12/02/1980 | US4237438 High resistance continuous shield for reduced capacitive coupling in a deflection yoke |
| 12/02/1980 | CA1090554A1 .alpha.-RAMIFIED ALKANOL PHTALATE LIQUID DIELECTRIC COMPOSITIONS |
| 11/25/1980 | US4236200 Semiconductor circuit having a series-connected reactor |
| 11/25/1980 | US4236134 Multiphase transformer for power transmission in a supply system |
| 11/25/1980 | US4236133 Transformer with foil windings |
| 11/25/1980 | CA1090419A1 Fail-safe circuit for tap-changing transformer regulating system |
| 11/18/1980 | US4234865 Transformer framing structure |
| 11/18/1980 | US4234862 Robust polyphase transformer |
| 11/18/1980 | US4234861 Electrical windings |
| 11/12/1980 | EP0018727A1 A coil supporting device for use in stacking toroidal coils, and a loading coil assembly |
| 11/11/1980 | US4233488 Deep throat resistance welder |
| 11/11/1980 | US4232551 Leak detector for vaporization cooled transformers |
| 11/04/1980 | US4232284 Ignition coil and electrical connector therefor |
| 10/29/1980 | EP0018309A1 Current transformer |
| 10/28/1980 | CA1088386A1 Method for forming a heat-resistant coating on an oriented silicon steel sheet |
| 10/21/1980 | US4229722 Wire coil assembly for an electrical circuit |
| 10/21/1980 | US4229721 Welding transformer with drooping voltage-current characteristics |
| 10/16/1980 | WO1980002212A1 Method and device for control of distribution of electric field in the insulating gap of high-voltage electroinduction power installation |
| 10/15/1980 | EP0017161A1 Holder for electrical coil |
| 10/15/1980 | EP0017160A1 Holder for electrical coil |
| 10/15/1980 | EP0017019A1 Transformer or inductance coil with a coil with tappings |
| 10/07/1980 | US4227166 Reactor |
| 10/07/1980 | US4227143 High-voltage transformer |
| 10/07/1980 | CA1087262A1 Double-ended device for connecting two wires to each other |
| 09/30/1980 | US4225839 Current transformer |
| 09/30/1980 | CA1086487A1 Insulating oil, method of use and electrical equipment utilizing said oil |
| 09/23/1980 | US4224654 Relay driver circuit |
| 09/16/1980 | CA1085951A1 Inductor casing |
| 09/09/1980 | US4222023 Electrical coil assembly |
| 09/09/1980 | US4222004 Inductive transformer-type storage device |
| 09/09/1980 | CA1085473A1 Power inductor and transformer with low acoustic noise air gap |
| 09/03/1980 | EP0014967A1 Bushing |
| 08/26/1980 | US4219792 Device for the prestressing of concentric cylinders |
| 08/26/1980 | US4219791 Electrical inductive apparatus |
| 08/20/1980 | EP0014418A1 Coil for an air-cooled dry-type transformer |
| 08/12/1980 | CA1083661A1 Coil with protection against overheating |
| 08/06/1980 | EP0013782A1 Flat electric coil with tap |
| 08/05/1980 | US4216455 Inductive device with precision wound coil |
| 08/05/1980 | US4215763 Resonant sound attenuator for transformers |
| 07/29/1980 | US4215174 Insulating coating for transformer wires |
| 07/29/1980 | CA1082774A1 Transformer fault detection |
| 07/23/1980 | EP0013460A2 Miniaturized multi-layer flat electrical coil |
| 07/23/1980 | EP0013364A1 Radio frequency interference choke |
| 07/22/1980 | US4214222 Improved clamping members in a horizontal magnetic core power transformer |
| 07/22/1980 | US4214199 Current transformer |
| 07/15/1980 | US4213111 Ground level transformer unit |
| 07/15/1980 | US4213106 Tuning apparatus and method of producing the same |
| 07/15/1980 | US4213083 Circuit arrangement for compensating transmission errors of a transformer |
| 07/15/1980 | US4212914 Vinylidene fluoride copolymer rubber, low molecular weigh tackifier resin, curing agent, mica, filler |
| 07/08/1980 | US4211957 Amorphous metal lamp ballast having a capacitor integral with the magnetic core |
| 07/01/1980 | US4210858 High frequency high voltage power supply |
| 07/01/1980 | CA1080682A1 Dual coil hinged bobbin assembly |
| 06/25/1980 | EP0012739A1 Choke |
| 06/25/1980 | EP0012629A1 Electrical reactors |
| 06/24/1980 | US4209763 Induction voltage transformer |
| 06/17/1980 | US4208616 Inductive stabilization ballast for a discharge lamp |
| 06/17/1980 | CA1079823A1 Sheet-wound transformer coils with reduced edge heating |
| 06/11/1980 | EP0011973A1 Transportable power supply substation |
| 06/10/1980 | US4207550 Winding structure of electric devices |
| 06/03/1980 | US4206436 Electrical apparatus encapsulated with resin coated filler |
| 06/03/1980 | US4206435 Transformer cover |
| 06/03/1980 | CA1078937A1 Sheet-wound transformer coils |
| 05/28/1980 | EP0011590A1 Fully isolated metal-encapsulated high voltage switchgear with unipolar current transformers |
| 05/28/1980 | EP0011267A1 Superconductive electromagnet apparatus |
| 05/27/1980 | US4205291 Heavy duty converter |
| 05/27/1980 | US4205290 Transformer construction |
| 05/27/1980 | US4205289 Vaporization cooled electrical inductive apparatus |
| 05/27/1980 | US4205288 Transformer with parallel magnetic circuits of unequal mean lengths and loss characteristics |
| 05/27/1980 | CA1078476A1 Impulse voltage distribution improving partial-turn electrostatic shields for disc windings |
| 05/20/1980 | US4204263 Flyback transformer |
| 05/20/1980 | CA1077741A1 Combustible gas-in-oil detector |
| 05/13/1980 | US4203145 Chloro-diphenyl |
| 05/13/1980 | US4203085 Induction coil core |
| 05/13/1980 | CA1077584A1 Magnetically coupled coils with intervening conductive ring |
| 05/13/1980 | CA1077583A1 Sheet-wound, high-voltage coils |