Patents for H02M 7 - Conversion of ac power input into dc power output; Conversion of dc power input into ac power output (46,189)
02/1980
02/26/1980US4190873 Protective device for an electron tube
02/20/1980EP0008296A1 Supplier of direct current with superimposed alternating current.
02/19/1980US4189764 Current controlled inverter
02/19/1980US4189669 Circuit arrangement for generating a pulse-width modulated signal
02/12/1980US4188663 Protective device of a current source inverter
02/12/1980US4188660 Direct drive ballast circuit
02/06/1980EP0007920A1 Auxiliary commutation circuit for an inverter
01/1980
01/29/1980US4186434 Means for producing and controlling dead-time of the switching transistors DC-to-DC and DC-to-AC converters
01/29/1980US4186391 Apparatus for detecting diode failures in multiple diode rectifier bridges
01/29/1980CA1070763A1 Ac inverter with constant power output
01/29/1980CA1070762A1 D.c. to a.c. electronic inverter with overload protection
01/29/1980CA1070756A1 Phase monitoring arrangement for a three phase network supplying a d.c. motor through a controlled converter
01/15/1980US4184211 Output stage for switching regulated power supply
01/15/1980US4184198 Three-phase voltage generator responsive to DC control pulses
01/15/1980US4184128 High efficiency push-pull inverters
01/15/1980US4184075 X-ray diagnostic generator comprising an inverter feeding the high voltage transformer
01/15/1980CA1069987A1 High voltage a.c. to low voltage d.c. switching interface circuit
01/15/1980CA1069974A1 Digitally regulated inverter
01/01/1980US4181932 Power converter
01/01/1980US4181931 Two-phase control system
01/01/1980CA1069186A Inverter circuit for induction heating cooking ovens with a protection device
01/01/1980CA1069176A Muting control circuit for use with a power amplifier
12/1979
12/27/1979WO1979001165A1 Power transfer circuit
12/25/1979US4180853 Two-stage commutation circuit for an inverter
12/25/1979US4180745 Power regulating supply system for AC electrical loads
12/18/1979US4179729 Rotary electric machine and power conversion system using same
12/18/1979US4179727 Control device for a pulse-width modulated inverter
12/18/1979CA1068352A1 Induction heating apparatus comprising a static converter
12/11/1979US4178629 D. C. Powered A. C. supply for reactive loads
12/11/1979US4178521 Base drive circuit
12/04/1979US4177507 Method and control for maintaining optimum performance of HVDC power transmission systems at rectifier end during A. C. system fault
12/04/1979US4177494 Circuit arrangement for producing an open magnetic field
12/04/1979US4177479 Electrical circuit with a high-frequency thyristor fired by blocking leakage current
11/1979
11/27/1979US4176310 Device comprising a transformer for step-wise varying voltages
11/20/1979US4175249 Self-reconfiguring solar cell system
11/20/1979US4175246 Energizing circuit for magnetron using dual transformer secondaries
11/13/1979US4174535 Integrated current supply circuit
11/13/1979US4174497 Circuit and method for controlling reactive load currents of a three-phase system
11/13/1979CA1066368A1 Induction heating apparatus using a saturable reactor for power control purposes
11/06/1979US4173780 Method and apparatus for controlling the real and reactive power behavior of a high voltage D.C. transmission (HDT) system
11/06/1979US4173779 Single-pole commutation circuit
10/1979
10/30/1979US4173040 DC-to-AC voltage converter
10/30/1979US4173039 Current based power supply
10/23/1979US4172279 Integrated current supply circuits
10/23/1979US4172278 DC to AC inverter
10/23/1979US4172269 Circuit for overshoot supression in X-ray generators
10/16/1979US4171517 Apparatus for synchronization control of a plurality of inverters
10/16/1979CA1064584A1 Pulse generator using lc circuit to energize a coil
10/09/1979US4170739 Apparatus and method for supplying direct current with superimposed alternating current
10/03/1979EP0004293A2 Array of disc-type thyristors in thermal and electrical contact on cooling bodies
10/02/1979US4170037 Lock-out logic circuit for inverter protection
09/1979
09/25/1979US4169282 Multiphase full-wave rectifier assembly
09/25/1979US4169259 Frequency sensitive switching circuit
09/25/1979CA1063180A1 Power supply for magnetron
09/11/1979US4167777 Switching-mode regulator
09/11/1979US4167776 Inverter circuit
09/11/1979US4167775 Controller for synthesizer circuit for generating three-tier waveforms
09/11/1979US4167707 Symmetrical digital phase shifter
09/11/1979US4167698 Monitoring the conduction cutoff phase angles in rectifiers
09/11/1979US4167693 Control arrangement for a brushless D-C motor
09/11/1979US4167680 Emergency standby system for automatic transfer from utility power to a battery powered system
09/11/1979CA1062331A1 Inverter having forced turn-off
09/11/1979CA1062330A1 Power converter employing non-saturating interphase transformer
09/11/1979CA1062327A1 Static convertor
09/04/1979US4167035 Voltage multipliers
09/04/1979CA1061863A1 Rectifying circuit
08/1979
08/28/1979US4166288 Integrated current supply
08/28/1979US4166247 Control systems for pulse width control type inverter
08/28/1979US4165801 Static Leonard system
08/28/1979US4165749 Medical device for electroshock therapy
08/28/1979CA1061406A1 Frequency converter, commutation short circuit protection
08/07/1979US4164016 Current sensing system
08/07/1979US4164015 Control circuit for power converter
08/07/1979US4164013 Six-pulse rectifier circuit
08/07/1979US4163906 Time division switching regulator
08/07/1979CA1060095A1 Rectifier with switches of asymmetric voltage breakdown strengths
08/07/1979CA1060094A1 Method for operating a frequency converter, starting circuit
07/1979
07/31/1979US4163177 Oscillation generator providing oscillations of varying amplitude
07/24/1979US4162525 Power system having an inductive charge effect limiting inverter
07/24/1979US4162523 Static circuit arrangement for production of 3-phase current of variable frequency and output power
07/24/1979US4162441 Apparatus for control of DC power by electromagnetic induction
07/24/1979US4161980 Cooling capsule for thyristors
07/17/1979US4161775 Rectifier unit for provision in an alternator
07/17/1979US4161773 Push-pull inverter including starter circuit
07/17/1979US4161771 Inverter ripple regulator
07/17/1979US4161213 Cooling capsule for a thyristor
07/17/1979CA1058702A1 Transistor inverter
07/12/1979WO1979000428A1 Supplier of direct current with superimposed alternating current
07/10/1979US4161022 Controllable rectifier circuit for a power supply
07/10/1979US4160938 Motor drive apparatus
06/1979
06/26/1979US4159515 Inverter control system
06/26/1979US4159514 Signal loss detector for three phase circuit
06/19/1979US4158882 Full-wave rectifier circuit
06/13/1979EP0002296A1 DC-voltage supply
06/12/1979US4158224 Inverter apparatus
06/12/1979CA1056451A1 Converter control apparatus for ac-dc parallel power transmission system
06/12/1979CA1056450A1 Commutation circuit for low kva static ac motor drive
06/05/1979US4157579 Pulse generation employing parallel resonant LC circuit for energizing a coil with square wave
06/05/1979US4157578 Dv/dt protection for solid state switches
06/05/1979CA1056010A1 Reverse voltage surge protection for high-voltage thyristors