Patents
Sitemap › H02 - Generation, conversion, or distribution of electric power › H02M - Apparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems; Conversion of dc or ac input power into surge output power; Control or regulation thereof › H02M 1 - Details of apparatus for conversion
Patents for H02M 1 - Details of apparatus for conversion (33,954)
10/1990
10/16/1990US4964158 Power supply for telephone exchange
10/16/1990US4964029 AC to DC power converter with input current waveform control for buck-boost regulation of output
10/16/1990US4964027 High efficiency power generating system
10/16/1990US4964026 Noise reduction technique for PWM controllers
10/14/1990CA2014606A1 Ballast circuits for discharge lamps
10/10/1990EP0391617A1 Method and network for enhancing power factor of off-line switching circuit
10/10/1990EP0390786A1 Power supply start circuit
10/10/1990CN1009980B Static transducer containing filter against high-frequency interference
10/10/1990CN1009979B Method for controlling thyristors and equipment theirof
10/10/1990CN1009978B Two way thyristor variable pulse phase shift trigger
10/10/1990CN1009977B Frequency self adoptive trigger of microprocessor in transistorized thyratron current convertor
10/09/1990US4962349 Battery operated power supply with low voltage start circuit
10/03/1990EP0389847A2 Circuit
10/03/1990EP0389624A1 Device for control of rectifiers
10/02/1990US4961130 Voltage inverter control applying real-time angle pattern determination
10/02/1990US4961129 Current controlled active flywheel type neutral point clamped inverter
10/02/1990US4961044 Power factor correction circuit for power supplies
10/02/1990US4961006 Inductively loaded switching transistor circuit
09/1990
09/26/1990CN1045677A Supply circuit
09/25/1990US4959766 AC/DC converter using resonant network for high input power factor
09/25/1990US4959558 Circuit arrangement for detecting cross-over by an alternating voltage of a fixed reference voltage level
09/19/1990EP0387735A2 Surge eliminator for switching converters
09/19/1990EP0387435A1 Control arrangement for a switched mode power supply
09/19/1990CN1009695B Supply circuit for supplying smoothed direct current to load impedance
09/16/1990CA2012441A1 Supply circuit
09/14/1990CA2010691A1 Surge eliminator for switching converters
09/12/1990EP0387108A1 Eliminating the effects of voltage transients
09/12/1990EP0386980A2 Switched-mode regulator circuit
09/11/1990US4956760 High power switching power supply having high power factor
09/11/1990US4956599 Power control apparatus
09/07/1990CA2011492A1 Switched-mode regulator circuit
09/05/1990EP0385546A1 Switched-mode power supply circuit including a starting circuit
09/05/1990EP0385544A1 Switched-mode power supply circuit
09/05/1990CN2061741U Isolation trigger of thyristor
08/1990
08/29/1990EP0384680A2 Switching circuitry
08/29/1990CN1045005A 电源电路 Power circuit
08/28/1990US4953070 Method for transverse-current-free operation of a push-pull circuit, and apparatus for performing the method
08/28/1990US4952819 Circuit for limiting current peaks at turn-on of a switching transistor
08/23/1990WO1990009695A1 A device with a multi-phase load, a static converter and choke coils
08/22/1990EP0383382A1 Power supply circuit
08/22/1990CN1044879A Method and arrangement for controlling single-phase or multiphase ac current regulator
08/14/1990US4949234 High efficiency power factor correction circuit
08/14/1990US4948990 BiCMOS inverter circuit
08/14/1990CA1272757A1 Supply circuit for supplying a smoothed direct current to a load impedance
08/09/1990WO1990009056A1 Inverter
08/08/1990WO1990009701A1 Process and device for controlling single-phase or multiphase a.c. controllers
08/08/1990CN1044551A Method and apparatus for controlling ac current regulator of singl-phase or polyphase
08/01/1990EP0379608A1 Method and device for controlling single or multiphase AC voltage converters
08/01/1990CN2060024U Touch type single-phase ac power supply controller
07/1990
07/26/1990WO1990008424A1 Device for controlling antiductors
07/25/1990EP0379346A2 Power conversion unit and module for its construction
07/24/1990US4943904 D.C. power unit assembly including unitized single-phase D.C. power units
07/24/1990US4943902 AC to DC power converter and method with integrated line current control for improving power factor
07/24/1990US4943840 Reverse-conducting thyristor
07/19/1990DE3901034C1 Inverter
07/19/1990DE3900796A1 Arrangement for avoiding transformer saturation when operating a voltage converter
07/18/1990CN1043998A Dynamic current control method of crystal shutter tube shunt
07/18/1990CN1008865B Three-phase semi-controlled bridge type rectifying circuit
07/18/1990CN1008862B Power-supply circuit
07/18/1990CN1008861B Trigger circuit of silicon controlled pectifier with high or medium power
07/17/1990US4942509 Control arrangement for a switch mode power supply
07/12/1990WO1990007855A1 Improved dimming control circuit
07/12/1990WO1990007820A1 Inverter switch current sensor
07/11/1990EP0377510A2 Power factor correction circuit
07/10/1990US4940929 AC to DC converter with unity power factor
07/03/1990US4939632 Power supply circuit
07/03/1990US4939443 Method and apparatus for the generation of voltage pulses
07/03/1990US4939427 Ground-fault-protected series-resonant ballast
07/03/1990CA1271220A1 Power-supply circuit
06/1990
06/28/1990WO1990007226A1 Method of controlling pwm inverter and an apparatus therefor
06/26/1990US4937731 Power supply with automatic input voltage doubling
06/26/1990US4937725 Circuit for eliminating snubber current noise in the sense circuit of an H-bridge inverter
06/26/1990US4937719 Resonance damping apparatus for LC filter of power converter
06/26/1990US4937540 Filter for switchmode power converters
06/26/1990US4937470 Driver circuit for power transistors
06/19/1990US4935861 Uninterrupted power supply having no low frequency power magnetics
06/14/1990WO1990006618A1 Polyphase power converter with ripple filter choke
06/14/1990WO1990006611A1 Inverter with proportional base drive controlled by a current transformer
06/13/1990EP0372109A1 Reactive power controller
06/12/1990US4933832 Automatic line monitor
06/12/1990US4933826 Cancellation of regulator output filter poles by second derivative feedback and error amplifier compensation
06/12/1990US4933804 Interference suppression for semi-conducting switching devices
06/12/1990CA1270298A1 Switching power supply
06/06/1990EP0371556A1 Circuit arrangement for powering a load
06/06/1990EP0371555A1 Circuit arrangement for powering a load
06/06/1990EP0243403B1 Rfi suppression technique for switching circuits
06/05/1990US4931919 System for converting variable frequency multiple phase alternating current into constant frequency multiple phase alternating current with neutral
05/1990
05/29/1990US4930061 Method and network for enhancing power factor of off-line switching circuit
05/29/1990US4929871 Appliance
05/29/1990CA1269725A1 Gate pulse generator for thyristor converter
05/22/1990US4928138 Power supply with integral filter and cooling device
05/22/1990US4928054 Switch mode electrical power controller
05/17/1990DE3937111A1 Circuit for two point switching pole inverter - has thyristors connected to intermediate circuit voltage and current choke between thyristors and output from centre tapping
05/08/1990US4924372 Single phase rectifier circuit
05/08/1990US4924150 Power-line control system
05/01/1990US4922401 Inverter circuit utilizing the reverse voltage capabilities of symmetrical gate turn off thyristors
05/01/1990US4922365 Overvoltage suppressing circuit for semiconductor device
05/01/1990CA1268519A1 Power supply adapter systems
04/1990
04/24/1990US4920473 Method and arrangement to commutate the current between turn-off valve arms of an I-type static converter
04/24/1990US4920472 Crest factor correction circuit
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