Patents for H01F 30 - Fixed transformers not covered by group (4,595) |
---|
01/20/1987 | US4638177 Rotating flux transformer |
12/23/1986 | US4631511 Toroid transformers and secondary windings |
12/23/1986 | US4631509 Electrical induction apparatus with support inside casing |
12/23/1986 | US4631471 Inductor apparatus for application of ferroresonant regulators |
11/26/1986 | CN86103505A Method and an arrangement for controlling the magnetizing current passing through a transformer |
11/11/1986 | US4622627 Switching electrical power supply utilizing miniature inductors integrally in a PCB |
11/06/1986 | WO1986006543A1 Connector arrangement for electrical circuits in underwater installations, and transformer particularly for use in such arrangements |
11/04/1986 | CA1213671A1 Electrical particle generator |
10/29/1986 | EP0199456A2 Electric transformer, possibly in combination with a rectifier |
10/15/1986 | EP0197698A2 Inductance adjustment for transformers |
10/08/1986 | CN86100489A Transient voltage protection for toroidal transformer |
10/07/1986 | CA1212434A1 Air-core choke coil and method of manufacturing it |
10/07/1986 | CA1212414A1 Method and apparatus for selective cancellation of subsynchronous resonance |
10/01/1986 | EP0196004A2 Inductor apparatus for application to ferroresonant regulators |
09/24/1986 | CN86101882A Ignition coil assembly for internal combustion engines |
09/24/1986 | CN86101693A Inductance adjustment for transformers |
09/10/1986 | EP0096058B1 Electric transformer and method for making it |
09/09/1986 | US4611190 Apparatus for transforming multiphase power of different phase to phase line levels into multiphase power having a single phase to phase voltage level |
09/09/1986 | CA1211169A1 Distribution transformer with woundmagnetic circuit |
09/02/1986 | CA1210828A1 Coil assembly with flux directing means |
08/13/1986 | EP0190930A2 Transient voltage protection for toroidal transformer |
07/29/1986 | CA1208723A1 Toroidal core electromagnetic device |
07/29/1986 | CA1208696A1 Transformer with rectifier |
07/15/1986 | US4599985 Ignition coil for multi-cylinder internal combustion engine |
07/02/1986 | EP0186598A1 Three-phase electric-power supply for an ozone generator |
07/02/1986 | EP0185750A1 Power transformer for use with very high speed integrated circuits |
06/17/1986 | US4595843 Low core loss rotating flux transformer |
06/04/1986 | EP0126734B1 Ignition coal for ignition devices of internal combustion engines |
05/27/1986 | US4591819 Inductance adjustment for transformers |
05/27/1986 | CA1205154A1 Neutral point plate of three-phase transformer for large secondary currents |
05/20/1986 | US4590453 Autotransformer with common winding having oppositely wound sections |
05/13/1986 | US4588971 Electric transformer with annular coil forms |
05/06/1986 | US4587606 High voltage transformer and rectifier arrangement |
05/06/1986 | US4587506 Safety transformer |
04/08/1986 | US4581598 Segmented toroidal air-core transformer |
04/01/1986 | US4580122 Ignition coil for ignition systems of internal combustion engines |
02/18/1986 | US4571669 Transformer with rectifier |
01/08/1986 | EP0166952A1 High-current transformer with indirect adjustment of tension by an intermediate circuit |
01/08/1986 | EP0166951A1 Transformer with a high-current bushing assembly |
12/19/1985 | WO1985005730A1 Power transformer for use with very high speed integrated circuits |
12/04/1985 | EP0163167A1 Transformer device for electric welding |
10/30/1985 | EP0159387A1 Distribution transformer with coiled magnetic circuit |
10/29/1985 | US4550364 Power transformer for use with very high speed integrated circuits |
10/22/1985 | US4549130 Low leakage transformers for efficient line isolation in VHF switching power supplies |
10/15/1985 | US4547721 Transformer structure |
10/09/1985 | EP0157670A1 Transformer and method of producing it |
09/24/1985 | US4543552 Transformer, more especially a voltage dropping transformer for an electric welding machine |
09/17/1985 | CA1193681A1 Transformers |
09/11/1985 | EP0154052A1 Safety transformer |
08/27/1985 | US4538132 Impedance converting transformer formed of conductors extending through a magnetic housing |
08/27/1985 | US4538131 Air-core choke coil |
08/21/1985 | EP0151729A2 High-voltage transformer for X-Ray generator |
08/20/1985 | US4536733 High frequency inverter transformer for power supplies |
08/20/1985 | CA1192281A1 Toroidal electrical transformer and method of producing same |
07/10/1985 | EP0147544A2 High voltage transformer |
06/18/1985 | US4524342 Toroidal core electromagnetic device |
06/11/1985 | CA1188765A1 Electrical transformer |
04/24/1985 | EP0137867A1 Fixing device for wound toroidal cores |
04/23/1985 | US4513243 Core form transformer for selective cancellation of subsynchronous resonance |
04/23/1985 | US4513240 Method and apparatus for selective cancellation of subsynchronous resonance |
04/09/1985 | US4509495 Ignition coil for a multi-cylinder internal combustion engine |
03/26/1985 | US4507636 Neutral point plate of three-phase transformer for large secondary currents |
03/26/1985 | CA1184621A1 Transformer, and method of manufacture |
02/19/1985 | US4500833 Switched mode power supply transformer |
02/19/1985 | US4500829 Advance and retard phase-shift transformer |
01/29/1985 | US4496924 Pulse transformer having conductive shield around magnetic core material |
01/29/1985 | US4496821 Transformer for robot arms |
01/23/1985 | EP0131808A1 Very high frequency power transformer and method of manufacturing |
01/15/1985 | US4494167 Inductor |
01/08/1985 | US4493016 Rectifier transformer |
12/20/1984 | WO1984004993A1 Transformer for converting 3-phase ac into single-phase ac and 6-step dc |
12/11/1984 | US4488136 Combination transformer with common core portions |
12/05/1984 | EP0126734A1 Ignition coal for ignition devices of internal combustion engines. |
12/04/1984 | US4486731 Coil assembly with flux directing means |
11/22/1984 | WO1984004625A1 Voltage-less ac transformer |
11/13/1984 | US4482945 Transformer for low distortion rectifier system |
11/06/1984 | CA1177546A1 Inductor and process of manufacturing the same |
10/30/1984 | CA1177127A1 Miniaturized transformer construction |
10/16/1984 | US4477792 Modular power system reactor |
09/11/1984 | US4471337 Conductor bundles for the coils of dry inductors |
09/05/1984 | EP0117515A1 Reactor having a plurality of coaxially disposed windings |
09/04/1984 | US4470006 Transformer |
07/24/1984 | US4462017 High voltage air core reactor |
07/10/1984 | US4459653 Apertured transformer and inverter using same |
07/03/1984 | CA1170321A1 Low loss spider support for coil of an inductive apparatus |
06/07/1984 | WO1984002224A1 Ignition coal for ignition devices of internal combustion engines |
05/02/1984 | EP0106958A1 Electrodynamic pump |
04/03/1984 | US4441150 High-voltage rectifier unit |
03/15/1984 | WO1984001050A1 3-phase ac no-voltage transformer |
01/25/1984 | EP0099274A1 Transformer, particularly a tension reducer for electric welding equipment |
01/25/1984 | EP0098897A2 Electrical generator utilizing magnetized particles |
12/21/1983 | EP0096058A1 Electric transformer and method for making it. |
12/06/1983 | US4419606 Magnetron |
10/26/1983 | EP0092204A2 Inductance coil |
10/26/1983 | EP0092018A1 Reactor, particularly air isolated reactor without magnetic core |
10/11/1983 | CA1155174A1 Voltage regulator using saturable transformer |
08/09/1983 | US4398112 Aminated winding for electric machines |
07/27/1983 | EP0084412A1 Low loss spiders and air core reactor incorporating the same |
07/13/1983 | EP0083567A1 Toroidal electrical transformer and method of producing same |
07/06/1983 | EP0082954A1 Toroidal core electromagnetic device |