Patents for H02M 7 - Conversion of ac power input into dc power output; Conversion of dc power input into ac power output (46,189)
05/1979
05/29/1979US4156899 Current source inverter
05/29/1979US4156897 Apparatus for supplying direct current from a three-phase alternating-current source
05/29/1979US4156896 Method of controlling a power conversion system
05/29/1979US4156888 Flyback transformer
05/22/1979US4156275 Power conversion unit
05/22/1979US4156274 Inverter circuit
05/22/1979US4156210 Resonant transformer push-pull transistor oscillator
05/22/1979CA1055112A1 Complementary commutation circuit for bipolar inverter
05/15/1979US4155113 Protective circuit for transistorized inverter-rectifier apparatus
05/08/1979US4153930 Balanced control waveform for reducing inverter harmonics
05/01/1979US4152759 Frequency converter
05/01/1979US4152656 Apparatus for monitoring an AC variable
05/01/1979CA1053752A1 Apparatus for controlling controlled systems with dead time
05/01/1979CA1053749A1 Converter valve
04/1979
04/24/1979US4151586 Method and apparatus for shutting down an inverter
04/24/1979US4151387 Metal base cookware induction heating apparatus having improved power control circuit for insuring safe operation
04/24/1979CA1053338A1 Two-level temperature control for induction heating apparatus
04/24/1979CA1053327A1 Holding circuit for static converter valves
04/17/1979US4150426 Transistorized power supply drive circuit arrangement
04/17/1979US4150425 Module failure isolation circuit for paralleled inverters
04/17/1979US4150325 Power conversion system having inversion fault detection and correction circuit
04/17/1979US4150323 Intensity control of fluorescent lamps
04/10/1979US4149234 Inverter arrangements
04/10/1979US4149233 Circuit for automatic load sharing in parallel converter modules
04/10/1979US4149232 Voltage boosting circuits
04/10/1979CA1052279A1 Switching circuit utilizing the base storage characteristic of a transistor for use in a facsimile transceiver and the like
04/03/1979CA1051977A1 Modulated induction generator
04/03/1979CA1051976A1 Peak load levelling system
03/1979
03/27/1979US4146921 Power control or conversion apparatus
03/27/1979US4146920 Pre-charge circuit for aux-comm inverter
03/27/1979CA1051516A1 Spatial arrangement of the valves of a twelve pulse converter system
03/20/1979CA1051089A1 Inverter control circuit
03/13/1979US4144559 Power converter control system
03/13/1979US4144462 Emergency lighting fluorescent pack
03/06/1979US4143414 Three phase ac to dc voltage converter with power line harmonic current reduction
03/06/1979CA1050099A1 High frequency power supply for corona generator
02/1979
02/27/1979CA1049611A1 Dc to ac inverter having improved switching efficiency, overload and thermal protection features
02/20/1979US4141064 Booster circuit
02/13/1979US4139880 CMOS polarity reversal circuit
02/13/1979CA1048666A1 High voltage generator arrangement
02/13/1979CA1048612A1 Regulated power supply means for magnetron
01/1979
01/30/1979US4137570 Waveform synthesizer
01/30/1979US4137560 Multiphase full-wave rectifier assembly
01/23/1979US4136382 Converter system
01/23/1979US4136305 Power converter control apparatus
01/23/1979CA1047120A1 Controlled h.f. induction heating apparatus
01/23/1979CA1047108A1 Synchronized push-pull inverter
01/16/1979US4135237 Inverter
01/16/1979US4135235 Synthesizer circuit for generating three-tier waveforms
01/16/1979CA1046579A1 Controlled reactance regulator circuit
01/02/1979US4133025 Pulse width modulator symmetry correction circuit and method thereof
01/02/1979US4133018 Thyristor fault-detecting apparatus
12/1978
12/26/1978US4131939 Constant current power supply
12/26/1978US4131937 Naturally commutated voltage-fed converter for linking a DC source to an AC system
12/26/1978US4131936 Symmetrical phase shifting apparatus, digital delaying device used therein and harmonic neutralized inverter system using the apparatus
12/12/1978US4129809 Power factor corrected dual converter motor drive
12/12/1978US4129808 Electronic control arrangement which can be used in particular for driving a brushless and slip-ringless motor and an installation incorporating such an arrangement
12/12/1978US4129805 Impulse generator for use with phosphor energizable lamps
12/12/1978CA1044332A1 Microwave and induction heating oven
12/05/1978US4128871 High voltage DC power supply
12/05/1978US4128870 High current-rectifier arrangement
12/05/1978US4128869 Phase control arrangement of valve converter
11/1978
11/28/1978US4127893 Tuned oscillator ballast circuit with transient compensating means
11/28/1978US4127798 Lamp circuit
11/28/1978CA1043430A1 Multi-purpose thyristor commutation circuit
11/14/1978US4125800 Power controller with a modular power output
11/07/1978US4124886 Generation of low frequency, high voltages
11/07/1978US4124885 Offset compensation for harmonic neutralized static AC generator
11/07/1978US4124811 Circuit for bi-directionally powering a motor
11/07/1978CA1042076A1 Radio frequency transmitters
10/1978
10/31/1978US4123670 Transistor switching circuit
10/31/1978CA1041602A1 Starting circuit for inverter
10/31/1978CA1041601A1 Inverter
10/24/1978US4122517 Thyristor control method for thyristor AC-DC converter
10/24/1978US4122516 Inverter control apparatus
10/24/1978US4122515 High harmonic current reducing apparatus in power converter
10/24/1978US4122512 Superconductive energy storage for power systems
10/24/1978CA1041180A1 Thyristor gate control for induction heating appliance
10/24/1978CA1041169A1 Paralleling of inverters for low harmonics
10/17/1978CA1040706A1 Momentary power supply shutdown system
10/10/1978US4119897 Static convertor
10/03/1978US4118770 Inverter apparatus commutated by an auxiliary source
10/03/1978US4118769 Full wave demand controlled preregulating supply
10/03/1978US4118768 Demand controlled preregulating rectifier circuit for power supplies
10/03/1978US4118641 Chopper including transistor switches
09/1978
09/26/1978USRE29788 Inverter having forced turn-off
09/26/1978US4117389 Low frequency high output alternating current generating device
09/26/1978US4117373 Emergency/normal lighting circuit for a gaseous discharge lamp
09/26/1978US4117364 Voltage waveform synthesizer and a system that includes the same
09/26/1978CA1039355A1 Control system for phase displacement regulator circuits
09/12/1978US4114048 Load balancing system for ups rectifiers
09/05/1978US4112287 Central oscillator for induction range using triac burner controls
09/05/1978US4112286 Power circuit for induction heating
08/1978
08/29/1978US4110821 Semiconductor device having a semiconductor accommodated in a sealed vessel
08/22/1978US4109308 Circuit for converting a.c. voltage into a d.c. voltage
08/22/1978US4109307 High power factor conversion circuitry
08/22/1978US4109306 Power supply
08/22/1978US4109167 Transistor amplifier applying large output currents to a load
08/15/1978US4107771 Circuit for shutting down an inverter
08/15/1978CA1036668A1 Overvoltage protection for a direct current transmission