| Patents for H01F 38 - Adaptations of transformers or inductances for specific applications or functions (13,550) |
|---|
| 12/18/1979 | US4179649 Voltage supply apparatus powered from a vehicular electrical system |
| 12/18/1979 | CA1068359A1 Current transformer |
| 12/11/1979 | US4178540 Saturable reactors |
| 12/11/1979 | US4177782 Ignition system providing sparks for two ignition plugs in each cylinder from a single ignition coil |
| 12/04/1979 | US4177509 Self-excited inverter with suppressed current spikes |
| 11/28/1979 | EP0005694A2 Ground fault protective circuit interrupter |
| 11/20/1979 | CA1066787A1 High voltage winding lead and terminal structure |
| 11/13/1979 | US4174510 RF transformer |
| 11/13/1979 | CA1066405A1 Head drum assembly |
| 11/06/1979 | CA1065974A1 Inductor structures for electrical discharge lamp circuits |
| 10/30/1979 | CA1065423A1 Inductive coupler |
| 10/23/1979 | US4172243 Transformer with a liquid cooled case and a method for making the liquid cooled case |
| 10/16/1979 | CA1064562A1 Current transformer assembly for dynamoelectric machines |
| 10/04/1979 | WO1979000729A1 Combined current and voltage transformers for a high voltage installation enclosed in a metal envelope filled with pressure gas |
| 09/04/1979 | US4167037 Apparatus for DC/AC power conversion by electromagnetic induction |
| 09/04/1979 | US4166992 Symmetrical structure for shunt controlled regulated transformer |
| 08/14/1979 | US4164619 Porous encapsulating composition for electrical apparatus |
| 08/08/1979 | EP0003396A1 Control circuit for energizing an electrically ignited load |
| 07/31/1979 | US4163190 Apparatus for control of electrical current by electromagnetic induction |
| 07/24/1979 | US4162522 Apparatus for frequency conversion by electromagnetic induction |
| 07/24/1979 | US4162441 Apparatus for control of DC power by electromagnetic induction |
| 07/17/1979 | US4161776 Flyback transformer with high tension connector |
| 07/17/1979 | US4161772 Conversion and control of electrical energy by electromagnetic induction |
| 06/13/1979 | EP0002225A1 Earth-leak circuit breaker reacting upon earth leak AC, portions of earth leak DC, as well as smooth earth leak DC |
| 05/29/1979 | US4156888 Flyback transformer |
| 05/15/1979 | US4155034 Saturable reactors with feedback |
| 04/24/1979 | US4151500 Line output transformer |
| 04/03/1979 | US4147499 Voltage boosting transformer and an electronic ignition gas lighter using such a transformer |
| 04/03/1979 | CA1051985A1 High-voltage transformer comprising a foil winding |
| 03/27/1979 | US4146859 Saturable reactor for pincushion distortion correction |
| 03/27/1979 | US4146857 Ignition coil for engine ignition system |
| 03/20/1979 | CA1051103A1 Fluid filled transformer |
| 03/13/1979 | US4144485 Contactless connector circuit |
| 02/20/1979 | US4140961 Shunt circuit for an insulation type current transformer to adapt to a wide-band of frequency |
| 02/20/1979 | CA1049109A1 Variable inductance transducers |
| 02/20/1979 | CA1049097A1 Cross-field ground fault sensor |
| 02/13/1979 | US4138783 Method for measuring stresses or forces |
| 01/23/1979 | CA1047134A1 Inductive voltage transformer for a high-voltage metal-clad switch-gear installation |
| 01/16/1979 | US4135127 Direct current transformer |
| 01/16/1979 | CA1046584A1 Variable gain electronic current transformer |
| 01/02/1979 | US4132969 Ignition coils |
| 12/12/1978 | CA1044364A1 High voltage generating circuit |
| 12/05/1978 | US4128378 Equipment for producing high voltage rectifying units |
| 11/14/1978 | CA1042506A1 Fail-safe transformer circuit |
| 10/31/1978 | US4123736 Leakage reactance transformer |
| 10/17/1978 | US4120277 Breakerless magneto device |
| 10/03/1978 | CA1039795A1 Discharge lamp lighting apparatus and method |
| 09/26/1978 | US4117437 Top core type current transformer structure |
| 09/26/1978 | US4117436 Torqueless relatively moving transformer windings |
| 09/26/1978 | CA1039399A1 High voltage generating circuit |
| 09/26/1978 | CA1039373A1 Saturable reactor for pincushion distortion correction |
| 09/05/1978 | US4112473 Apparatus for determining a d-c potential in metal-encapsulated high voltage switching installations and equipments |
| 09/05/1978 | US4112347 Conversion and control of electrical energy by electromagnetic induction |
| 08/29/1978 | US4110806 Circuit interrupting apparatus for use in direct current circuits |
| 08/29/1978 | CA1037576A1 Inductive connectors |
| 08/08/1978 | US4105931 Inductor structures for electrical discharge lamp circuits |
| 08/01/1978 | US4104497 Disconnect contact assembly for metal-clad switchgear and the like |
| 07/11/1978 | US4100476 Single secondary dimming inverter/ballast for gas discharge lamps |
| 07/11/1978 | US4099510 Ignition coil for internal combustion engine |
| 06/20/1978 | US4096535 Rotary transformer with unique physical and electrical characteristics |
| 05/23/1978 | US4091349 High voltage winding lead and terminal structure |
| 05/02/1978 | US4087774 Information transmitting system |
| 05/02/1978 | US4087744 Device for determining a high-voltage potential in metal-encapsulated high-voltage switching installations and equipment |
| 04/25/1978 | US4086552 High-voltage transformer comprising a foil winding |
| 04/11/1978 | US4084144 High voltage winding comprising several component coils for voltage transformers |
| 04/11/1978 | US4084143 Transformer mounting assembly |
| 04/04/1978 | US4083026 Arrangement with inductive voltage transformers |
| 02/14/1978 | US4074193 Combined current and voltage measuring apparatus |
| 01/31/1978 | US4071824 Shrouded jaws for hook-on type instruments |
| 01/03/1978 | US4066955 High voltage transformer winding assembly with multiple frequency tuning |
| 11/29/1977 | US4060759 Tube-insulated shell-core current transformer |
| 11/22/1977 | US4059326 Dry-type instrument transformer with potential tap and connector therefor |
| 11/15/1977 | US4058761 Saturated reactors |
| 10/25/1977 | US4055825 Voltage transformer for high voltage |
| 10/18/1977 | US4054856 Current transformer assembly for dynamoelectric machines |
| 10/11/1977 | US4053822 Subharmonic frequency generator |
| 10/04/1977 | US4052685 Current transformer |
| 10/04/1977 | US4052668 Arrangement comprising a high voltage measuring capacitor |
| 09/20/1977 | US4048972 Ignition coil for internal combustion engines |
| 09/13/1977 | US4048605 Split core current transformer having an interleaved joint and hinge structure |
| 08/09/1977 | US4041355 High voltage generating circuit |
| 07/26/1977 | US4038625 Magnetic inductively-coupled connector |
| 07/26/1977 | US4038624 Rotary transformer |
| 07/12/1977 | US4035751 Device for inducing an electrical voltage |
| 07/12/1977 | US4035745 Circuit for the production of an open alternating magnetic field |
| 06/28/1977 | US4032837 Current transformer |
| 06/21/1977 | US4031558 Head drum assembly with electrical noise shield |
| 06/21/1977 | US4031459 Inductive voltage transformer for a high-voltage metal-clad switch-gear installation |
| 06/14/1977 | US4030058 Inductive coupler |
| 06/14/1977 | US4030057 Inductive voltage transformer |
| 06/14/1977 | US4029440 High pressure fluid intensifier and method |
| 05/31/1977 | US4027200 High voltage generating circuit |
| 05/17/1977 | US4024483 Variable inductance transducers |
| 05/10/1977 | US4023100 Transformer for d-c signals |
| 05/03/1977 | US4021729 Cross-field ground fault sensor |
| 05/03/1977 | US4021723 Fail-safe transformer circuit |
| 04/26/1977 | US4020440 Conversion and control of electrical energy by electromagnetic induction |
| 04/26/1977 | US4020439 Inductive stabilizing ballast for a gas and/or vapor discharge lamp |
| 04/05/1977 | US4016478 High-voltage transformer |
| 04/05/1977 | US4016477 Novel multi-path leakage transformer and inverter ballast |