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 7 - Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
Patents for H02M 7 - Conversion of ac power input into dc power output; Conversion of dc power input into ac power output (46,189)
10/1990
10/03/1990EP0390184A2 Improvements in variable-voltage & variable-frequency power converter
10/03/1990EP0389976A2 High Voltage power source device
10/03/1990EP0389624A1 Device for control of rectifiers
10/03/1990EP0389515A1 Integratable synchronous rectifier.
10/03/1990CN1045900A Silicon controlled sine-wave oscillator
10/02/1990US4961130 Voltage inverter control applying real-time angle pattern determination
10/02/1990US4961129 Current controlled active flywheel type neutral point clamped inverter
09/1990
09/30/1990CA2012020A1 Fault-powered power supply
09/27/1990DE4009267A1 Gas discharge lamp DC powered operating circuit - has inverter bridge using power switching semiconductor and associated buffer circuits
09/26/1990EP0388850A2 Semiconductor eletric power conversion system
09/26/1990CN2062931U Double-pole double-throw double-lamp dc safety switch for temp. regulation
09/26/1990CN2062917U Ac emergency power supply with impulse duration modulation and voltage regulation
09/26/1990CN1009787B Switching elements of free oscillatory passage converter
09/25/1990US4959556 Circuit arrangement for deriving a direct voltage from the mains alternating voltage
09/19/1990EP0387735A2 Surge eliminator for switching converters
09/19/1990EP0387734A2 N-Phase sinewave converter
09/19/1990CN1045494A Procedure for control of frequency converter and rectifier / inverter bridges, and modulator unit designed for implementing procedure
09/19/1990CN1045493A Rectifier bridge unit
09/19/1990CN1045492A Procedure for selection of bridge or bridge section in rectifier bridge unit, and bridge selector unit designed for implementing procedure
09/19/1990CN1009698B Method and apparatus for controlling voltage type convertor by p.w.m.
09/19/1990CN1009697B Ac power supply device
09/19/1990CN1009696B Inverter apparatus
09/19/1990CN1009695B Supply circuit for supplying smoothed direct current to load impedance
09/19/1990CN1009694B Thyristor valve
09/19/1990CN1009636B Power supply equipment for d.c. electrification railway
09/14/1990CA2010691A1 Surge eliminator for switching converters
09/12/1990CN1009596B Method and arrangement for controlling the magnetizing current passing through a transformer
09/11/1990US4956762 Controlled switched bridge-based power reconfiguring apparatus
09/07/1990WO1990010339A1 A.c. interphase reactor and process for concurrent operation of two power converters
09/05/1990EP0415923A4 High efficiency converter.
09/05/1990EP0385352A2 Three-phase generator with directcurrent supply
09/05/1990CN2061742U Small high voltage electrostatic electric source using total transistor
09/04/1990US4954726 Switching an inverter with stored signal sequences
09/03/1990CA2011138A1 Three-phase generator with direct-current supply
08/1990
08/29/1990EP0383962A1 High-voltage rectifier and associated control electronics
08/29/1990EP0383949A1 Current limiting system for a voltage-type inverter
08/29/1990CN1045007A Bridge-type semi-(full-) wave rectifying circuit
08/28/1990US4953071 For use in an electrical inverter
08/28/1990US4953070 Method for transverse-current-free operation of a push-pull circuit, and apparatus for performing the method
08/28/1990US4953069 Method of operating a three-step inverter
08/28/1990US4952819 Circuit for limiting current peaks at turn-on of a switching transistor
08/23/1990WO1990009704A1 Waveform generation and control
08/23/1990DE3904990A1 Regulated feedback DC voltage intermediate-circuit supply
08/22/1990CN1044880A Circuit and method for discharging dc filter capacitors
08/21/1990US4951188 Final stage of a bridge circuit
08/21/1990US4951187 Method for controlling a three-phase inverter
08/21/1990CA1273115A1 Method and apparatus for controlling power converter
08/21/1990CA1273055A1 Superconductive energy storage circuit
08/16/1990EP0382110A2 Output control circuit for reversers, and high-frequency power supply for the DC supply of a welding station
08/16/1990EP0381672A1 The electronic stabilizer for a fluorescent lamp
08/14/1990US4949235 Magnetic amplifier shutdown circuit
08/14/1990CA1272757A1 Supply circuit for supplying a smoothed direct current to a load impedance
08/14/1990CA1272756A1 Vital inverter driver
08/09/1990WO1990009087A1 Solid state electronic ballast
08/09/1990WO1990009056A1 Inverter
08/09/1990DE3928499A1 Rectifier suitable for LV high frequency current - uses MOSFET with comparator control input to control direction of current flow
08/08/1990EP0381580A1 High-voltage power supply device for an X-ray tube
08/07/1990US4947312 Non-resonance type AC power source apparatus
08/07/1990US4947311 Electrical power conversion circuit
08/07/1990US4947310 Parallel operating system for alternate current output converters
08/07/1990US4947309 Method and means for controlling a bridge circuit
08/07/1990US4947282 Thyristor valve with improved gate pulse generating scheme
08/07/1990US4947087 Lamp-lighting device
08/02/1990DE3902984A1 Electronic ballast device
08/01/1990EP0379580A1 Inverter
07/1990
07/31/1990US4945467 Multiple-mode voltage converter
07/31/1990US4945464 High voltage DC power supply
07/31/1990US4945291 Lamp-lighting device
07/31/1990US4945255 Power source device
07/25/1990EP0379346A2 Power conversion unit and module for its construction
07/24/1990US4943699 System for supplying power
07/19/1990DE3900796A1 Arrangement for avoiding transformer saturation when operating a voltage converter
07/18/1990CN1008868B Dual transformer phase-shifting driving circuit used in transistorized adverser power transistor
07/18/1990CN1008867B Control apparatus for pwm converter
07/18/1990CN1008866B Control method for electric power converting apparatus and their arrangement
07/18/1990CN1008865B Three-phase semi-controlled bridge type rectifying circuit
07/18/1990CN1008863B Electric power supply for a unidirectional load
07/18/1990CN1008862B Power-supply circuit
07/17/1990US4942511 Static power conversion apparatus using a high frequency series resonant DC link
07/17/1990US4942510 Power and signal transfer interface circuit
07/17/1990CA1271809A1 Control apparatus of ac/dc power converter
07/17/1990CA1271808A1 Power conversion system
07/12/1990WO1990007820A1 Inverter switch current sensor
07/11/1990EP0377537A2 Circuit for providing fast output current control in a current mode switching power supply
07/11/1990EP0376994A1 Device for producing a magnetic field in an atomic absorption spectrometer.
07/11/1990CN1008694B High-voltage silicon controlled rectifier with spark frequency automatic control system
07/10/1990US4941079 Pulse width modulation power transmission system
07/10/1990US4941077 Configuration for starting an inverter
07/10/1990US4941076 Start-up circuit for a high voltage DC to AC converter
07/10/1990US4941075 Timing correction for square wave inverter power poles
07/04/1990EP0376725A2 Circuit for discharging DC filter capacitors
07/04/1990EP0375776A1 Motor drive unit
07/04/1990CN1043592A Control apparatus of dc power coupling system
07/03/1990US4939633 Inverter power supply system
07/03/1990US4939427 Ground-fault-protected series-resonant ballast
07/03/1990US4939405 Piezo-electric vibrator pump
07/03/1990CA1271220A1 Power-supply circuit
06/1990
06/29/1990CA2005089A1 Circuit and method for discharging dc filter capacitors
06/28/1990WO1990007230A1 Dc content control for an inverter
06/28/1990WO1990007226A1 Method of controlling pwm inverter and an apparatus therefor
1 ... 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 ... 462