| 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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| 06/28/1990 | WO1990007225A1 Control for producing a low magnitude voltage at the output of a pwm inverter |
| 06/28/1990 | DE3843142A1 Protective circuit for a series tuned-(resonant-)circuit invertor having saturable inductors |
| 06/28/1990 | DE3842985A1 Method for controlling a three-point invertor |
| 06/27/1990 | EP0374832A2 Pulse width modulated inductive load controller |
| 06/26/1990 | US4937725 Circuit for eliminating snubber current noise in the sense circuit of an H-bridge inverter |
| 06/26/1990 | CA1270901A1 Power supply with battery backup |
| 06/20/1990 | EP0373693A2 Generator of drive signals for transistors connected in a half-bridge configuration |
| 06/20/1990 | EP0373381A1 Three-phase inverter control process |
| 06/20/1990 | EP0155300B1 Current regulator for carpet seaming apparatus |
| 06/19/1990 | US4935861 Uninterrupted power supply having no low frequency power magnetics |
| 06/19/1990 | US4934822 PWM-controlled power supply capable of eliminating modulation-frequency signal components from ground potentials |
| 06/19/1990 | CA1270521A1 Voltage control system |
| 06/19/1990 | CA1270518A1 Asynchronous motor regulated supply frequency converter |
| 06/16/1990 | CA2001259A1 Over-voltage protection of quasi-resonant converters using state-vector feedback techniques |
| 06/13/1990 | CN2058286U Single sided self-oscillation voltage comparison tracking and amplification type dc-to-ac inverter |
| 06/13/1990 | CN1043049A 电力变换器 Power converter |
| 06/13/1990 | CN1043048A Direct method for obtaining dc voltage from ac voltage |
| 06/12/1990 | US4933831 Power supply |
| 06/12/1990 | US4933830 Switching power supply |
| 06/12/1990 | US4933828 Control system for voltage-source pulse width modulation step-up rectifier |
| 06/12/1990 | US4933622 Circuit and method for discharging DC filter capacitors |
| 06/09/1990 | CA2004268A1 Method of selecting optimum series limiting resistance for high voltage control circuit |
| 06/07/1990 | DE3840824A1 Self-commutating converter circuit and method for operating it |
| 06/06/1990 | EP0371556A1 Circuit arrangement for powering a load |
| 06/06/1990 | EP0371555A1 Circuit arrangement for powering a load |
| 06/06/1990 | EP0371442A1 Control method of pulse width modulation inverter and pulse width modulation inverter system |
| 06/06/1990 | EP0243403B1 Rfi suppression technique for switching circuits |
| 06/05/1990 | US4931919 System for converting variable frequency multiple phase alternating current into constant frequency multiple phase alternating current with neutral |
| 06/05/1990 | CA1270040A1 Vehicular power supply system having a plurality of power supply voltages |
| 06/05/1990 | CA1270039A1 Rectifier assembly for mounting in a rotor |
| 06/05/1990 | CA1270025A1 Direct current feeder device for a minimum of two loads with a common |
| 05/31/1990 | WO1990006014A1 Three phase inverter power supply with balancing transformer |
| 05/31/1990 | DE3923694C1 Corona generator for handling of plastics foils - is controlled by frequency generator with frequencies altered using phase measurement circuit |
| 05/31/1990 | DE3840806A1 Circuit arrangement for parallel connection of any chosen number of pulse invertors |
| 05/30/1990 | EP0370896A1 Power interrupting device, particularly for a frequency convertor |
| 05/30/1990 | EP0370388A2 Power converter |
| 05/30/1990 | EP0370302A2 Multistage cascade rectifier |
| 05/30/1990 | EP0370254A1 Procedure and apparatus for the measurement of the currents in a frequency converter |
| 05/30/1990 | CN2057791U Non-empty wastage contravariant power supply |
| 05/29/1990 | US4930064 Phase stabilized high frequency link power converter apparatus having a wide phase controllable range |
| 05/29/1990 | US4930063 Variable resonance regulator for power supply |
| 05/29/1990 | US4930062 Computer power supply with optically isolated shutdown circuits |
| 05/29/1990 | US4930061 Method and network for enhancing power factor of off-line switching circuit |
| 05/22/1990 | US4928295 High-voltage generating device for use with an X-ray tube |
| 05/22/1990 | CA2003657A1 Power switching circuit, in particular for a frequency converter |
| 05/17/1990 | WO1990005406A1 Variable speed, constant frequency generating system with input transformer |
| 05/17/1990 | DE3937111A1 Circuit for two point switching pole inverter - has thyristors connected to intermediate circuit voltage and current choke between thyristors and output from centre tapping |
| 05/17/1990 | DE3923384C1 Pulsed current supply appts. - has double screening for connecting leads supplying load in two current directions |
| 05/16/1990 | CN1008037B Inverse current transformer system common to a.c. and d.c inputs |
| 05/15/1990 | US4926306 Electric power converter |
| 05/15/1990 | US4926302 Switching power source device |
| 05/15/1990 | US4926104 Adjustable speed AC drive system control for operation in pulse width modulation and quasi-square wave modes |
| 05/10/1990 | DE3935868A1 Rectifier for power supply control - has pulsed inverter reverse coupled to control operating point |
| 05/09/1990 | EP0367247A2 Control apparatus of DC power coupling system |
| 05/09/1990 | EP0171415B1 Current sense demodulator |
| 05/08/1990 | US4924373 Apparatus and method for controlling switching elements in a PWN-controlled voltage source inverter |
| 05/08/1990 | US4924372 Single phase rectifier circuit |
| 05/08/1990 | US4924371 Rectifier circuit provoding compression of the dynamic range of the output voltage |
| 05/08/1990 | US4924370 Low-loss and low-reactive power switching relief device for the semiconductor switches of an inverter |
| 05/08/1990 | US4924168 Control apparatus for PWM-controlled, variable voltage/variable frequency inverters |
| 05/08/1990 | US4924147 High-frequency fluorescent marine light |
| 05/03/1990 | WO1990004881A1 Inverter means |
| 05/02/1990 | EP0366314A1 Single MAG AMP control system for regulating bipolar voltage output of a power converter |
| 05/02/1990 | CN1041853A Pulse-duration modulation signal generator |
| 05/02/1990 | CN1007860B Microthyristor circuit and device |
| 05/01/1990 | US4922405 High voltage transformer |
| 05/01/1990 | US4922404 Method and apparatus for gating of synchronous rectifier |
| 05/01/1990 | US4922401 Inverter circuit utilizing the reverse voltage capabilities of symmetrical gate turn off thyristors |
| 05/01/1990 | US4922400 Neutral forming circuit |
| 05/01/1990 | US4922396 DC-DC converter |
| 05/01/1990 | US4922124 Power converter device |
| 05/01/1990 | CA1268518A1 Power generator |
| 05/01/1990 | CA1268420A1 Solid phase diffusion assay |
| 04/26/1990 | DE3836274A1 Power converter for two current directions and method for its operation |
| 04/26/1990 | DE3835751A1 Arrangement for reducing the inductance of conductors |
| 04/25/1990 | CN1041683A Modular cabinet for electrical battery banks |
| 04/25/1990 | CN1007772B Inverter arrangement |
| 04/24/1990 | US4920475 Integrated traction inverter and battery charger apparatus |
| 04/24/1990 | US4920473 Method and arrangement to commutate the current between turn-off valve arms of an I-type static converter |
| 04/24/1990 | US4920472 Crest factor correction circuit |
| 04/24/1990 | US4920471 AC high voltage power supply |
| 04/24/1990 | US4920470 Voltage inverter |
| 04/24/1990 | CA1268213A1 Fault detector for detecting faults in a dc capacitor circuit |
| 04/18/1990 | EP0363514A1 Method for controlling a three-phase current consumer through PWM with a sinusoidal evaluation |
| 04/18/1990 | CN2056293U Multiple-bridge controlled rectifier |
| 04/18/1990 | CN1007688B Induction motor control apparatus and method for restart when rotating in shutdown |
| 04/17/1990 | US4918590 Hybrid circuit module having bridge circuit and rectifying circuit disposed on a same substrate |
| 04/17/1990 | US4918285 System for supplying power |
| 04/11/1990 | EP0363250A1 Process and device for triggering an electronic converter by the network |
| 04/11/1990 | CN2056008U Convertible power supply for dry battery lighting |
| 04/11/1990 | CN2055998U Scr inverter |
| 04/11/1990 | CN1007572B Inverter control apparatus |
| 04/11/1990 | CN1007571B Control apparatus for pwm-controlled, veriable voltage/variable frequency inverters |
| 04/10/1990 | US4916598 Apparatus for discerning faulty switching device |
| 04/10/1990 | US4916571 Spray-coating device |
| 04/05/1990 | DE3833400A1 Device for producing a smoothed DC voltage from an AC or three-phase voltage source, and method for controlling the relationship between the magnitude of the AC or three-phase voltage and the magnitude of the smoothed DC voltage |
| 04/04/1990 | EP0362083A1 Modular rack for the batteries of electric accumulators |
| 04/04/1990 | EP0361836A2 Commutation circuit for load commutated inverter induction motor drives |
| 04/04/1990 | EP0361389A2 DC/AC power converting apparatus including DC component remover |
| 04/03/1990 | US4914561 Dual transformer device for power converters |