| Patents for H02M 5 - Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases (13,094) |
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| 12/01/1993 | CN1079083A Compact and efficient transformerless power conversion system |
| 11/24/1993 | EP0317609B1 Switching ac voltage regulator |
| 11/24/1993 | CN2147688Y Microcomputer ultrahigh frequency large power contravariant power supply |
| 11/24/1993 | CN2147687Y Dc low voltage power supply |
| 11/24/1993 | CN2147665Y Protector for colour TV and refrigerator |
| 11/24/1993 | CN2147656Y Valtage-adjustable time-delay switch socket |
| 11/24/1993 | CN2147574Y Multi-function electric heating switch |
| 11/23/1993 | US5264761 Data link switching system |
| 11/18/1993 | EP0569582A1 Telephone ringing signal generator |
| 11/17/1993 | CN2146815Y Photoelectric speed-adjusting switch |
| 11/17/1993 | CN2146804Y Capacity-charging battery charger |
| 11/17/1993 | CN1078580A Capacitor voltage-transformation method |
| 11/11/1993 | WO1993022826A1 Electronic power regulator |
| 11/10/1993 | CN2146064Y Electronic light regulating lamp base (socket) |
| 11/10/1993 | CN2146051Y Energy-saving pull switch with three-stage light change |
| 11/03/1993 | CN2145489Y Board type energy-saving, light regulating switch for fluorescent lamp |
| 11/03/1993 | CN2145475Y Silicon controlled rectifier derect controlled by magnetic amplifier |
| 10/27/1993 | CN2144895Y Electronic adjuster with voltage regulating and timing function |
| 10/27/1993 | CN1022600C IF power supply asymmetric starting of parallel inverter thyristors and controlling thereof |
| 10/26/1993 | US5257174 Engine-driven power generating system with over-current protection and stator teeth with grooves on a top surface |
| 10/26/1993 | US5256905 Method and circuit for sequentially connecting plural loads to an a.c. voltage without damaging the low voltage control circuitry therefor |
| 10/20/1993 | CN2144385Y Long service life energy saver for light bulb |
| 10/20/1993 | CN2144368Y Regulator for electric power use |
| 10/14/1993 | WO1993020677A1 Electronic ballast for a gas discharge lamp |
| 10/14/1993 | WO1993020610A1 Compact and efficient transformerless power conversion system |
| 10/14/1993 | CA2132971A1 Compact and efficient transformerless power conversion system |
| 10/13/1993 | EP0564771A2 Drive control apparatus for electrical machine and parameter display method in drive control apparatus for electrical machine |
| 10/07/1993 | DE4210624A1 Elektronisches Vorschaltgerät für eine Gasentladungslampe Electronic ballast for a gas discharge lamp |
| 10/06/1993 | EP0563764A1 Dimmer for halogenlamps fed by electronic transformers or for mains-fed incandescent lamps |
| 10/06/1993 | CN2143371Y Socket with voltage adjustor |
| 10/05/1993 | US5251119 Inverter with shared chopper function for high input power factor with restrained higher harmonics |
| 10/05/1993 | US5250786 D-C arc welding apparatus |
| 09/29/1993 | EP0562985A1 Power variation method in a load connected to the network |
| 09/29/1993 | CN2143027Y AC. voltage-regulating device controlled directly by magnetic amplifier |
| 09/28/1993 | CA1322575C Frequency output generator |
| 09/22/1993 | CN2142619Y 可控硅交流调整器 SCR AC regulator |
| 09/15/1993 | EP0560255A1 Power reduction control for inductive lighting installation |
| 09/15/1993 | EP0560026A1 Device for the operation of loads on AC supply terminals |
| 09/15/1993 | CN1076318A Regulator for current and voltage |
| 09/14/1993 | US5245522 Power supply controlled to supply load current formed as sine wave |
| 09/14/1993 | US5245272 Electronic control for series circuits |
| 09/09/1993 | DE3645189C2 Three=phase continuous flow water heater |
| 09/08/1993 | EP0458794B1 Process and device for controlling single-phase or multiphase a.c. controllers |
| 09/08/1993 | CN1076064A AC controllable voltage regulating circuit with controllable devices used for changing transformation ratio |
| 09/01/1993 | CN2141476Y Temp. different time controlling rotation rate regulator |
| 08/25/1993 | CN2141147Y Multi-purpose power-saving controller for electrical equipment |
| 08/25/1993 | CN1075578A Electricity-saving method by complementary intelligent indirect control of wave number and apparatus thereof |
| 08/24/1993 | US5239255 Phase-controlled power modulation system |
| 08/24/1993 | US5239252 Method and apparatus for controlling single or multiphase a.c. power controllers |
| 08/18/1993 | EP0555432A1 Electronic device for converting electrical energy. |
| 08/18/1993 | CN2140588Y Contact stepless governor |
| 08/18/1993 | CN2140569Y Receptacle panel with regulating voltage |
| 08/18/1993 | CN1075383A Inductance-capacitance constant-current transformer dc source |
| 08/17/1993 | US5237494 Frequency inverting apparatus |
| 08/17/1993 | US5237244 Electric lighting and power controllers therefor |
| 08/12/1993 | DE4203394A1 Battery charger with primary controlled for constant currents - has number of switched primary windings with binary weightings selected dependent upon secondary circuit current |
| 08/11/1993 | EP0554804A1 Control equipment for high voltage direct current transmission system |
| 08/10/1993 | US5235503 Process and device for eliminating or reducing harmonics and/or resonance oscillations |
| 08/10/1993 | CA1321236C Power control circuit with phase controlled signal input |
| 08/04/1993 | CN1075035A Multifunctional biasing power supply |
| 07/28/1993 | EP0497783A4 Variable speed ac drive control |
| 07/28/1993 | CN2139326Y Wireless remotecontrol light-regulating and speed-regulating switch |
| 07/22/1993 | WO1993014558A1 Power supply |
| 07/21/1993 | EP0551450A1 Four quadrant motor controller |
| 07/21/1993 | CN2138857Y Multifunction controllable power source connector |
| 07/21/1993 | CN2138844Y Multifunction adjustable electronic socket |
| 07/21/1993 | CN1021681C Device for overvoltage protection of rectifier bridge feeding dc motor and for control of dc motor |
| 07/13/1993 | US5227711 Motor controller |
| 07/08/1993 | WO1993013588A1 Five-leg core type three-fold frequency multiplier |
| 07/07/1993 | CN2137839Y Plug-type electronic transformer |
| 07/07/1993 | CN2137799Y Switch-type rectifier |
| 07/06/1993 | US5225765 Inductorless controlled transition and other light dimmers |
| 06/30/1993 | CN2137407Y Multi-functional electronic timing regulator |
| 06/24/1993 | DE4141844A1 Installation arrangement for mains load power control - has two parallel connected control switches for separately controlling separate loads, and actuator which determines phase angle |
| 06/22/1993 | US5221877 Power reduction control for inductive lighting installation |
| 06/17/1993 | DE4140684A1 Current supply method for electrostatic pptn. filter via an inverter - provides for redn. of inverter input current to basic level while no output current is flowing |
| 06/16/1993 | EP0344243B1 Quasi-resonant current mode static power conversion method and apparatus |
| 06/16/1993 | CN2136549Y Electronic through-the-wall remote-controlled voltage regulator |
| 06/16/1993 | CN2136548Y Digital electronic power controller |
| 06/16/1993 | CN2136547Y Energy-saving phase converter |
| 06/15/1993 | US5220494 Protection circuit and method for variable speed drives utilizing phase controlled converters |
| 06/15/1993 | US5220264 Control system for an AC servomotor having a permanent magnet type |
| 06/10/1993 | WO1993011600A1 Vscf system with reduced dc link ripple |
| 06/09/1993 | CN2135872Y Three-phase balance type single-phase ac supply device |
| 06/09/1993 | CN1021190C Apparatus for conversion |
| 06/09/1993 | CN1021181C Circuit and method for voltage regulation of electric power sources |
| 06/09/1993 | CN1021180C Method and apparatus for controlling ac current regulator of single-phase or polyphase |
| 06/09/1993 | CN1021179C VSCF starter/generator system |
| 06/08/1993 | US5218520 Vscf system with reduced dc link ripple |
| 06/03/1993 | WO1993011624A1 Telephone ringing signal generator |
| 06/03/1993 | CA2101842A1 Telephone ringing signal generator |
| 06/02/1993 | CN1021097C Method and arrangement for controlling single-phase or multiphase ac. current resglator |
| 06/01/1993 | US5216352 Solid state current controlled interruption system |
| 05/25/1993 | US5214575 Ground fault detector for an inverter and a method therefor |
| 05/25/1993 | US5214366 Three-phase converter for polyphase induction motors |
| 05/19/1993 | CN2133987Y Remote-controlled touch voltage-regulating switch |
| 05/19/1993 | CN1072278A Plus-minus symmetrical output universal regulated power supply |
| 05/12/1993 | CN2133095Y Integrated thyristor if power device |
| 05/12/1993 | CN2133094Y Portable multifunction voltage regulator with double voltage class |
| 05/11/1993 | US5210684 Apparatus and method for controlling the operating frequency of compressor in air conditioning apparatus |