Patents for H02M 1 - Details of apparatus for conversion (33,954)
07/1980
07/29/1980US4215279 Apparatus for controlling the operation of power transistors in a switching mode
07/15/1980US4213066 Solid state switch
07/09/1980EP0012919A1 Circuit arrangement for reducing the recovery time of a thyristor
07/09/1980EP0012846A1 Thyristor
07/08/1980US4212055 Control for an inverter station
07/08/1980US4212024 Solid-state switching circuit employing photon coupling suitable for construction in form of integrated circuit
07/08/1980US4211940 Electronic power control device
07/08/1980CA1081323A1 Dv/dt protection for solid state switches
07/08/1980CA1081322A1 Emitter follower voltage controlled power supply
06/1980
06/25/1980EP0012742A1 Multiple-bridge, three-phase converter arrangement including voltage harmonics cancellation
06/24/1980US4209757 Circuit for compensating harmonic currents in an electric consumer arrangement
06/24/1980US4209733 Motor control apparatus with an improved thyristor chopper circuit
06/24/1980US4209683 Load responsive trigger interval control for induction heating apparatus having inversely parallel connected thyristors
06/17/1980US4208707 Method and apparatus for control of static valve converter
06/17/1980CA1079816A1 Sawtooth waveform generator
05/1980
05/20/1980US4204264 Harmonic cancellation for multi-bridge, three-phase converters
05/13/1980US4203047 Gate circuit of gate turn-off thyristor
05/13/1980CA1077565A1 Circuit for controlling the reverse current in a controlled rectifier
04/1980
04/29/1980US4200908 Device for digital control of polyphase thyristor-pulse converter
04/22/1980US4199694 Terminal convertible alternating current switch
04/16/1980EP0009783A1 A system for driving a motor by a pulse width modulation inverter
04/15/1980CA1075768A1 Alternating current controlling system
04/02/1980EP0009225A1 Protective circuit
04/01/1980CA1074865A1 Transistor switching circuit with feedback inductor
04/01/1980CA1074863A1 High power factor ac to dc converter circuit
03/1980
03/25/1980US4195336 Digital control device for multiphase thyristor-pulse d.c. converter
03/25/1980US4195335 Switching power supply having a wide range input capability
03/25/1980US4195334 High-voltage DC transmission system and method
03/25/1980US4195306 Gate turn-off thyristor
03/25/1980US4195236 Device for discrete control of thyristor-pulse converters
03/11/1980US4193111 Unity power factor converter
03/04/1980US4191992 Method of and apparatus for enabling soft-failure of modular power converter systems, including RF generator systems, embodying switching components in the power conversion
02/1980
02/20/1980EP0008053A1 Trigger circuit
02/19/1980US4189695 Current limiting fuse device employing cooling and insulating medium
01/1980
01/29/1980US4186434 Means for producing and controlling dead-time of the switching transistors DC-to-DC and DC-to-AC converters
01/15/1980US4184086 Semiconductor switch
01/15/1980CA1069975A1 Semiconductor switch
11/1979
11/27/1979US4176288 Zero voltage switching solid state relay
11/13/1979USRE30150 Inductor drive means
11/13/1979US4174495 Static current limiting switch with soft forced commutation
11/06/1979US4173722 Digital pulse generator with end-stop detection and control
11/01/1979WO1979000878A1 Device for smoothing an output voltage of an electric generator
10/1979
10/17/1979EP0004701A2 A method of and apparatus for reducing priming and sweep-out losses in SCR switching circuits
10/16/1979US4171510 System for detecting output of controllable semiconductor device
10/09/1979CA1064108A1 Semiconductor switch
10/09/1979CA1064107A1 Four-layered semiconductor switch
10/02/1979US4170037 Lock-out logic circuit for inverter protection
10/02/1979CA1063672A1 Gate controlling apparatus for a thyristor valve
09/1979
09/25/1979US4169259 Frequency sensitive switching circuit
09/25/1979CA1063189A1 Configuration for reducing the turn-off time of a thyristor
09/19/1979EP0004199A1 Method and apparatus for supplying electric current to a number of electrical loads
09/11/1979US4167776 Inverter circuit
09/11/1979US4167698 Monitoring the conduction cutoff phase angles in rectifiers
09/11/1979US4167696 Zero phase switching for multi-phase systems
09/11/1979CA1062330A1 Power converter employing non-saturating interphase transformer
08/1979
08/07/1979US4164013 Six-pulse rectifier circuit
08/07/1979CA1060094A1 Method for operating a frequency converter, starting circuit
07/1979
07/31/1979US4163191 Magnetic phase shifter control system
07/10/1979US4161022 Controllable rectifier circuit for a power supply
07/10/1979US4160921 Thyristor control
07/03/1979US4160288 Active filter circuit for regulated dc to dc power supplies
07/03/1979US4160153 Duty cycle shared proportional temperature control
06/1979
06/12/1979US4158164 Phase control of power to a load using a single capacitor
05/1979
05/22/1979US4156275 Power conversion unit
05/16/1979EP0001756A1 Circuit for reducing the turn-off time of a thyristor
05/08/1979CA1054221A1 Current regulation system for three-phase load
05/08/1979CA1054218A1 Circuit arrangement for protecting thyristors
04/1979
04/24/1979US4151586 Method and apparatus for shutting down an inverter
04/24/1979US4151427 High-voltage zero-crossing detector
04/24/1979US4151387 Metal base cookware induction heating apparatus having improved power control circuit for insuring safe operation
04/24/1979CA1053331A1 Control system for controlling the operation of a three-phase load
04/24/1979CA1053326A1 Constant frequency chopper feeding low current to an inductive load_
04/17/1979US4150424 Dynamic current balancing for power converters
04/10/1979US4149236 Process for control or regulation of analog electrical machines
04/03/1979CA1051978A1 Inrush current limit circuit with reset response to lowered input voltage
03/1979
03/20/1979US4145592 Induction heating apparatus with means for detecting zero crossing point of high-frequency oscillation to determine triggering time
03/06/1979US4143383 Controllable impedance attenuator having all connection contacts on one side
03/06/1979CA1050170A1 Circuit arrangement for firing controlled, parallel-connected electric valves
03/06/1979CA1050107A1 High-voltage thyristor converter
01/1979
01/23/1979CA1047107A1 Converter circuit
01/16/1979US4135124 Electronic monitoring system with selective signal inverter
01/09/1979CA1046142A1 Drive circuit for controlling conduction of a semiconductor device
01/02/1979US4132909 Zero axis crossing detector
12/1978
12/26/1978US4131927 A.C. power supply circuit with surge current suppression
12/26/1978US4131826 Triggering circuit for triggered vacuum gaps
12/19/1978US4130827 Integrated circuit switching network using low substrate leakage current thyristor construction
12/19/1978CA1044758A1 Three phase load controlling system
12/19/1978CA1044756A1 Frequency reduction and power control circuit for thyristor line controllers
12/12/1978US4129791 Solid state switching circuit
12/12/1978CA1044318A1 Dc convertor
12/05/1978CA1043871A1 Digital controller for thyristors
11/1978
11/28/1978US4127894 Converter protection circuit operative to limit and counteract transformer saturation
11/28/1978CA1043430A1 Multi-purpose thyristor commutation circuit
11/21/1978US4126819 Interlock circuit for complementary electronic switches
11/21/1978CA1042977A1 Voltage monitoring controlling and protecting apparatus employing programmable unijunction transistor
11/14/1978US4125787 Semiconductor switch circuit
11/14/1978CA1042507A1 Pulse control system power circuit
11/14/1978CA1042500A1 Solid state chopper ballast for gaseous discharge lamps
11/07/1978US4124886 Generation of low frequency, high voltages
10/1978
10/31/1978US4123670 Transistor switching circuit