| Patents for H02M 7 - Conversion of ac power input into dc power output; Conversion of dc power input into ac power output (46,189) |
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| 02/25/1992 | US5091839 Method and apparatus for supplying voltage to a three-phase voltage system having a load-carrying neutral conductor with a pulse width modulated three phase invertor |
| 02/25/1992 | US5091823 Inverter device |
| 02/25/1992 | US5091688 Remotely switched voltage converter |
| 02/25/1992 | US5091664 Insulated gate bipolar transistor circuit with overcurrent protection |
| 02/25/1992 | US5091069 Utilize a current fed inverter power supply which only supplies a controlled output current waveform to the load, prevents short circuit |
| 02/25/1992 | CA1296386C Power converter control circuit |
| 02/20/1992 | DE4025685A1 Rectifying circuit protecting mains against transformer harmonics - utilises star connections of phase-shifted sec. windings for integration of parasitic capacitances into filter circuits |
| 02/19/1992 | EP0471435A2 Power conversion scheme employing shorting means to control current magnitude |
| 02/19/1992 | EP0471183A2 Minimizing network harmonics from transformer circuits |
| 02/19/1992 | EP0471107A1 Method and device to keep the symmetry of a three-phase system |
| 02/19/1992 | EP0471106A1 Method and device for maintaining three-phase symmetry |
| 02/19/1992 | CA2090391A1 Electon beam device |
| 02/18/1992 | US5089949 High efficiency passive component voltage converter |
| 02/18/1992 | CA1296054C Arrangement for connecting plural self-commutated voltage type inverters to autility grid |
| 02/18/1992 | CA1296053C Switching-relieved low-loss three-level inverter |
| 02/18/1992 | CA1296052C Commutation circuit for load commutated inverter induction motor drives |
| 02/15/1992 | CA2027481A1 Power converter apparatus |
| 02/13/1992 | DE4037348C1 Protective circuitry for power semiconductor switches - uses bridging voltage clamping circuit consisting of diode and Zener diode belonging to rectifier pair |
| 02/13/1992 | DE4025322A1 Netzbetriebene phasenanschnitt-steuerschaltung Mains powered phase control circuit |
| 02/12/1992 | EP0470525A2 Power converter with shoot-through protection |
| 02/12/1992 | EP0470499A2 Pulse-width modulated circuit for driving a load |
| 02/11/1992 | WO1992002983A1 Line-powered, phase-control circuit |
| 02/11/1992 | US5088019 Low harmonic current and fault tolerant power supply |
| 02/11/1992 | US5088018 Overvoltage protection power supply circuit |
| 02/11/1992 | CA1295675C Single mag amp control system for regulating bipolar voltage output of a power converter |
| 02/11/1992 | CA1295674C Ac/dc converters with energy transfer control means |
| 02/11/1992 | CA1295673C High voltage power supply particularly adapted for a twt |
| 02/11/1992 | CA1295672C Quasi-resonant current mode power conversion method and apparatus |
| 02/11/1992 | CA1295668C Power converter device having starting circuits, and a method for startingthe power converter device |
| 02/10/1992 | CA2044664A1 Switched multi-taped transformer power conversion method and apparatus |
| 02/06/1992 | WO1992002075A1 Method and apparatus for full wave rectification of a three-phase signal operating in a wye configuration |
| 02/05/1992 | EP0469944A2 Energy recovery for a decanter centrifuge |
| 02/05/1992 | EP0469873A2 Waveform generator for inverter control |
| 02/05/1992 | EP0469872A2 Isolated adjustable frequency AC inverter control |
| 02/05/1992 | EP0469173A1 Inverter with over-current protection |
| 02/01/1992 | CA2047593A1 Isolated adjustable frequency ac inverter control |
| 01/29/1992 | EP0468769A2 Power supply apparatus |
| 01/29/1992 | EP0468736A1 Electrostatic spraying device and method |
| 01/29/1992 | EP0468735A1 Electrostatic spraying method |
| 01/28/1992 | CA1295014C Digitally controlled a.c. to d.c. power conditioner that draws sinusoidal input current |
| 01/28/1992 | CA1295012C Control device of the transistor bases of an inverter arm |
| 01/26/1992 | WO1992002110A1 High frequency heating apparatus using power supply of switching type for magnetron |
| 01/24/1992 | WO1992002076A1 Power supply for single phase boost |
| 01/24/1992 | CA2090724A1 Power supply for single phase boost |
| 01/22/1992 | EP0467694A2 Three-phase PWM signal generating device for inverters |
| 01/22/1992 | EP0467374A2 Control circuit for an invertor operable in an individual mode and an interconnection mode |
| 01/22/1992 | CN1058076A Ac fan system for train (ship) |
| 01/21/1992 | US5083255 Inverter with electrically controllable output |
| 01/21/1992 | US5082998 Switching power supply for microwave oven |
| 01/16/1992 | DE4121177A1 Switch=off circuitry for discharge of inverter branch pairs - consists of two gate-controlled semiconductor switches arranged between poles of DC voltage source |
| 01/16/1992 | DE4042378A1 Symmetrical switch discharge system for inverter branch pair - uses gate controlled semiconductor switches connected to DC voltage source |
| 01/16/1992 | DE4022176A1 Control modulator for power transistors - has further transformer in sec. load circuit of driver transformer providing current feedback |
| 01/16/1992 | DE4021766A1 Improving control of three=phase pulse inverter - modifying switch=over for low RPM to apply freewheeling state at zero voltage to machine |
| 01/15/1992 | EP0465699A1 Control method for turn-off electric valves in a bridge arm of a power converter |
| 01/15/1992 | EP0465507A1 Fault-powered power supply. |
| 01/15/1992 | CN2093464U 电压适配器 Voltage adapters |
| 01/14/1992 | US5081570 Control system for electric power supply |
| 01/14/1992 | US5081409 Pulse-width modulated circuit for driving a load |
| 01/14/1992 | US5080289 Spraying voltage control with hall effect switches and magnet |
| 01/14/1992 | US5080218 Vibratory feeding apparatus |
| 01/14/1992 | CA1294328C Method and apparatus for minimizing the magnetizing current passing through a transformer |
| 01/11/1992 | CA2046486A1 Method of controlling turn-off current-converter switches of a bridge arm of a voltage-source converter |
| 01/07/1992 | US5079688 Transformerless power monitor circuit having means for electronically latching dc alarms |
| 01/07/1992 | US5079687 Multi-stage insulating transformer type high voltage generating apparatus having a connection structure |
| 01/02/1992 | DE4120100A1 Three=phase current regulator for synchronous electrical machine - has current for each phase controlled independently with defined band |
| 01/02/1992 | DE4020517A1 DC supply circuit for gas discharge lamp - uses choke coil infront of full-wave rectifier and output smoothing capacitor |
| 12/31/1991 | US5077652 Dual feedback loop DC-to-AC converter |
| 12/31/1991 | US5077651 Snubber circuit of power converter |
| 12/31/1991 | US5077595 Semiconductor device |
| 12/31/1991 | CA1293768C Power supply systems for reluctance motors |
| 12/27/1991 | EP0462547A2 Method and circuit configuration for generating a sinusoidal AC mains voltage from a DC voltage |
| 12/26/1991 | WO1991020172A1 Resonant inverter |
| 12/26/1991 | WO1991018442A3 Converter circuit and process for controlling the same |
| 12/25/1991 | CN1015222B Microcomputerized process controller with three phase fully controlled bridge pulse generator |
| 12/24/1991 | US5075838 Energy efficient voltage snubber circuit |
| 12/22/1991 | CA2085132A1 Resonant inverter |
| 12/19/1991 | DE4112676A1 Low-voltage AC-DC converter - has push-pull synchronous rectifiers in series with square-loop saturable-core elements which establish max. short-circuit current limit |
| 12/18/1991 | CN1057133A Hf switch capacitor inventer |
| 12/17/1991 | US5073850 Start circuit for a power supply control integrated circuit |
| 12/17/1991 | CA1293295C Mosfet fullbridge switching regulator having transformer coupledmosfet drive circuit |
| 12/12/1991 | WO1991018495A2 New electric circuit system |
| 12/12/1991 | DE4105132C1 Non-potential generating supply circuitry for electric motor - has transformer with sec. winding supplying control and auxiliary units of inverter |
| 12/11/1991 | CN1056965A Three-phase field-controlled bridge-type dc-to-ac converter |
| 12/10/1991 | US5072355 Ac-dc chopper converter type of supply |
| 12/10/1991 | US5072354 Pulse-width modulation type inverter apparatus |
| 12/05/1991 | DE4042377A1 DC electric drive e.g. for traction of vehicle or locomotive |
| 12/04/1991 | CN1056781A Automatic control circuit of power silicon controlled rectifier direct current power source |
| 12/03/1991 | US5070440 Power conversion scheme employing paralleled units |
| 12/03/1991 | US5070426 Clipper circuit for power transistor circuit and inverter circuit utilizing the same |
| 12/03/1991 | US5070292 Pulse-width modulated circuit for driving a load |
| 12/03/1991 | US5070251 Computer controlled standby power supply system |
| 12/03/1991 | CA1292770C Apparatus and method for controlling a force commutated inverter |
| 12/03/1991 | CA1292769C Three-phase pwm inverter with speed control and load compensation for aninduction motor |
| 11/28/1991 | WO1991018443A1 Process for forming a pulse model for a three-phase motor powered via an intermediate circuit voltage converter |
| 11/28/1991 | WO1991018442A2 Converter circuit and process for controlling the same |
| 11/28/1991 | DE4114500A1 DC elimination circuit for regulated AC drive - detects unwanted DC signals to calculate auxiliary stator-orientated setting voltage components for signal elimination |
| 11/28/1991 | DE4016684A1 Discharge lamp operating circuit - has voltage multiplier between AC source and lamp electrodes and heating circuit |
| 11/27/1991 | EP0458055A2 Pulse width modulation method for a convertor |
| 11/27/1991 | EP0457807A1 Waveform generation and control. |
| 11/27/1991 | CN1014947B Control apparatus of dc power coupling system |