| 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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| 08/27/1991 | CA1288132C High voltage generating circuit using a minimal amount of current |
| 08/22/1991 | DE4005333A1 Electronic power switching stage - has half bridge with two series of switching elements mounted on heat sink |
| 08/22/1991 | DE4005129A1 High-frequency induction heater - has ferrite annular core and winding which produces eddy currents at frequency of power-MOSFET switched resonant DC-AC converter |
| 08/21/1991 | EP0442287A2 A direct current power supply device |
| 08/21/1991 | EP0442286A2 Power factor correction circuit |
| 08/21/1991 | CN1053975A Circuit arrangement for supplying load |
| 08/20/1991 | US5041960 Frequency doubler and/or self-oscillating inverter |
| 08/20/1991 | US5041958 Stepped-waveform inverter with four subinverters |
| 08/20/1991 | US5041957 Stepped-waveform inverter with six subinverters |
| 08/15/1991 | CA2034799A1 Power factor correction circuit |
| 08/14/1991 | EP0440852A1 Control method and device for damping resonance oscillations in a parallel resonant circuit for a pulse inverter of a current source converter |
| 08/13/1991 | US5040105 Stepped-waveform inverter with eight subinverters |
| 08/13/1991 | US5039920 Method of operating gas-filled tubes |
| 08/08/1991 | WO1991011847A1 Method for control of a voltage stiff fundamental-frequency commutated convertor and convertor equipment with means for carrying out the method |
| 08/08/1991 | CA2035730A1 Control process and trigger equipment for damping resonant vibrations of a parallel-resonant circuit for a pulse-controled inverter of a c urrent-source inverter |
| 08/07/1991 | EP0440245A2 Power source circuit |
| 08/07/1991 | EP0439642A1 Control apparatus for inverter |
| 08/06/1991 | US5038267 Soft-switching power converter for operation in discrete pulse modulation and pulse width modulation modes |
| 08/06/1991 | US5038266 High efficiency, regulated DC supply |
| 08/06/1991 | US5038194 Semiconductor device |
| 08/06/1991 | US5038092 Current control system for inverter |
| 08/01/1991 | DE4038869C1 Current symmetrising circuitry for parallel converters - having branches of semiconductor switches and phase outputs coupled together via choke coils |
| 08/01/1991 | DE4034674A1 Halbleiterbauelement Semiconductor device |
| 07/30/1991 | US5036451 Inverter control with individual phase regulation |
| 07/30/1991 | US5036448 DC to AC inverter and method for producing three phases from two input phases |
| 07/30/1991 | US5036268 Procedure and apparatus for producing an a.c. voltage |
| 07/30/1991 | US5036254 Inverter having a broad output-control range |
| 07/30/1991 | US5036253 Inverter power supply for incandescent lamp |
| 07/30/1991 | US5036177 Method for reducing hazards due to low frequency electric and magnetic fields |
| 07/30/1991 | CA1287105C Power-supply arrangement |
| 07/23/1991 | US5034876 Real-time evaluation of PWM inverter pattern selection |
| 07/23/1991 | US5034874 PWM converter apparatus |
| 07/23/1991 | CA1286716C Reactive power processing circuit for a current source gto inverter |
| 07/17/1991 | EP0436980A1 Power supply with improved power factor correction |
| 07/17/1991 | EP0436879A1 Circuit, respectively device, for supply of current or voltage to electronic equipment or the like |
| 07/17/1991 | EP0436665A1 Variable speed, constant frequency generating system with input transformer |
| 07/16/1991 | US5032971 Power sypply system for converting an A.C. power supply voltage into D.C. power supply voltage |
| 07/16/1991 | US5032968 Switching power source with inrush current limiting circuit |
| 07/16/1991 | CA1286359C Control apparatus for ac-dc converter |
| 07/11/1991 | WO1991010280A1 A power inverter snubber circuit |
| 07/11/1991 | WO1991010245A1 Transformer with voltage balancing tertiary winding |
| 07/11/1991 | DE3943272A1 HF push=pull oscillator in half-bridge circuit - has junction point of capacitor and resistor or RC element coupled to switching path |
| 07/10/1991 | EP0436324A2 Power monitoring circuit |
| 07/09/1991 | US5031088 Variable-voltage and variable-frequency power converter |
| 07/09/1991 | US5031087 Procedure for the selection of a bridge or bridge section in a rectifier bridge unit, and a bridge selector unit designed for implementing the procedure |
| 07/09/1991 | US5031086 Hybrid power system |
| 07/09/1991 | US5030846 Zener diode detector circuit |
| 07/09/1991 | CA1285988C Switching power source device |
| 07/03/1991 | EP0435459A2 Mixed mode regulation controller for a resonant power converter |
| 07/03/1991 | EP0435390A2 Half-bridge driver which is insensitive to common mode currents |
| 07/03/1991 | EP0434889A2 Inverter and power supply systems including same |
| 07/03/1991 | CA2007094A1 Converter |
| 07/02/1991 | US5029064 Phase-controlled reversible power conversion with equal duty cycle substantially constant amplitude square wave excitation of the power transformer |
| 06/27/1991 | WO1991009460A1 Low inductance converter phase assembly |
| 06/27/1991 | WO1991009458A1 Hybrid power system |
| 06/27/1991 | WO1991009457A1 Regulator for stepped-waveform inverter |
| 06/27/1991 | WO1991009456A1 Stepped-waveform inverter with eight subinverters |
| 06/27/1991 | WO1991009453A1 Stepped-waveform inverter with four subinverters |
| 06/27/1991 | WO1991009452A1 Stepped-waveform inverter with six subinverters |
| 06/26/1991 | EP0433599A1 AC-DC converter |
| 06/26/1991 | EP0433416A1 Device with a multiplicity of independent, identical oscillators operating synchronously |
| 06/25/1991 | US5027265 Regulator for stepped-waveform inverter |
| 06/25/1991 | US5027050 Multiple battery system |
| 06/25/1991 | US5026955 Drive control method for an electromagnetic induction heating apparatus |
| 06/25/1991 | CA1285319C State signal formation for indicating the transition into the bypass mode of operation in an apparatus for high-voltage d-c transmission |
| 06/19/1991 | EP0433144A1 Switch mode AC-DC power supply |
| 06/19/1991 | EP0432881A1 Vibratory feeding apparatus |
| 06/19/1991 | CN1052401A Bridge type power converter with improved efficiency |
| 06/19/1991 | CN1012929B Direct current high-voltage generator |
| 06/18/1991 | US5025360 Inverter switch with parallel free-wheel diodes |
| 06/13/1991 | WO1991008605A1 Device for charging electrical energy storage means provided with means for controlling said charging |
| 06/12/1991 | EP0431778A1 AC to DC power conversion circuit with low harmonic distorsion |
| 06/12/1991 | EP0431492A2 Bridge type power converter with improved efficiency |
| 06/12/1991 | EP0277193B1 Full wave rectifier circuit |
| 06/12/1991 | CN1012871B Power converter |
| 06/11/1991 | US5023769 X-ray tube high-voltage power supply with control loop and shielded voltage divider |
| 06/11/1991 | US5023768 High voltage high power DC power supply |
| 06/11/1991 | US5023767 Highly efficient conversion circuit for power supplies |
| 06/11/1991 | US5023690 Merged bipolar and complementary metal oxide semiconductor transistor device |
| 06/11/1991 | US5023538 PWM inverter apparatus for controlling rotating magnetic flux in a.c. motors |
| 06/11/1991 | US5023150 Method and apparatus for controlling a fuel cell |
| 06/11/1991 | CA1284819C Converter circuit |
| 06/06/1991 | DE3939890A1 Current imaging of three=phase rectifier-fed motor - is corrected by removal of signal component due to current transformer demagnetisation after phase current extinction |
| 06/05/1991 | EP0430044A2 Method of controlling an inverter |
| 06/05/1991 | EP0262164B1 System for producing an alternating voltage |
| 06/04/1991 | US5021936 PWM power converter using mixed bipolar and static induction transistors |
| 06/04/1991 | US5021726 Process for driving an alternating-current motor and an alternating current motor which can be driven in accordance with this process |
| 05/30/1991 | WO1991007810A1 Process for correcting a detected faulty actual value of a signal with harmonic vibrations and circuit arrangement for implementing this process |
| 05/29/1991 | EP0429315A2 High voltage high power DC power supply |
| 05/28/1991 | US5019959 Discharge tube |
| 05/28/1991 | US5019952 AC to DC power conversion circuit with low harmonic distortion |
| 05/28/1991 | US5019770 Switching power source device having energy recovery |
| 05/25/1991 | CA2030582A1 High voltage high power dc power supply |
| 05/23/1991 | WO1991007809A1 Apparatus for a balanced three phase ac power supply in a computer having variable dc loads |
| 05/22/1991 | EP0428078A2 Pulse-width modulated circuit for driving a load |
| 05/22/1991 | CN2077590U High-voltage d.c inverse transform tube |
| 05/21/1991 | WO1991007807A1 Dc/dc power transformer |
| 05/21/1991 | US5017855 Current controlled inverter |
| 05/21/1991 | CA2021615A1 Ac to dc power conversion circuit with low harmonic distortion |
| 05/21/1991 | CA1284350C Induction motor control apparatus and method for restart when rotating in shutdown |