Patents for H02M 3 - Conversion of dc power input into dc power output (54,461)
07/1979
07/11/1979EP0002975A1 DC-voltage regulating device
07/10/1979US4161023 Up-and-down chopper circuit
07/10/1979US4161010 Commutation sensor circuit for a DC-to-DC silicon controlled rectifier (SCR) chopper circuit
07/10/1979US4160996 Switchable high voltage generator for penetration-type color CRT
07/10/1979US4160945 High efficiency switching regulator
07/10/1979US4160921 Thyristor control
07/10/1979US4160920 Bistable element and a switch circuit comprising such a bistable element
07/03/1979US4160288 Active filter circuit for regulated dc to dc power supplies
07/03/1979US4160172 Circuit for controlling demands of high current load
06/1979
06/26/1979US4159512 DC to DC converter circuit
06/26/1979US4159428 Method of dividing direct current among parallel circuits and device for effecting same
06/19/1979US4158881 DC to DC converter
05/1979
05/29/1979US4156898 DC Convertor
05/29/1979US4156895 Transistor flow through converter
05/22/1979US4156273 Protection of a switching regulator
05/15/1979US4155112 Power supply circuitry
04/1979
04/24/1979US4151558 Power supply discharge circuit for TV receiver
04/24/1979US4151387 Metal base cookware induction heating apparatus having improved power control circuit for insuring safe operation
04/24/1979CA1053326A1 Constant frequency chopper feeding low current to an inductive load_
04/17/1979US4150426 Transistorized power supply drive circuit arrangement
04/17/1979US4150424 Dynamic current balancing for power converters
04/17/1979US4150423 Transformer coupled pass element
04/17/1979US4150306 Blocking converter for flash equipment
04/03/1979US4148097 DC to DC converter utilizing current control for voltage regulation
03/1979
03/27/1979US4146832 Constant current series-switching regulator
03/27/1979US4145872 Electronic watch
03/20/1979US4145650 Method and apparatus for operating an internally timed switching regulator
03/20/1979CA1051089A1 Inverter control circuit
03/13/1979US4144463 Stabilized DC power supply devices for providing a plurality of DC power outputs which are selectively consumed
03/13/1979CA1050608A1 Portable corona power supply circuit
03/07/1979EP0000983A1 Programmably variable voltage multiplier for implantable stimulator
02/1979
02/27/1979US4142231 High current low voltage liquid cooled switching regulator DC power supply
02/20/1979US4141064 Booster circuit
02/20/1979US4140962 High voltage regulator using light dependent resistor
02/20/1979CA1049092A1 Converter-regulator circuit arrangement
02/13/1979CA1048666A1 High voltage generator arrangement
02/13/1979CA1048637A1 Deflection system
02/06/1979US4138715 Resonant switching converter
02/06/1979US4138635 Alternating current generator using light dependent resistor
01/1979
01/23/1979CA1047107A1 Converter circuit
01/23/1979CA1046817A1 Process and apparatus for the manufacture of filled, closed containers
01/16/1979US4135236 DC-to-DC chopper circuit
01/16/1979US4135234 Saturable reactor switch control for switching regulator power supplies
01/16/1979US4135233 Voltage control circuit for a DC-to-DC convertor
01/09/1979US4134057 Device for enabling an accumulator to be recharged from a source of electrical energy
01/09/1979CA1046139A1 D.c. power supply circuit
01/02/1979US4132933 Electromechanical chopper for speed control of battery powered devices
01/02/1979CA1045682A1 Power regulator responsive to duty cycle
12/1978
12/26/1978US4131843 High tension voltage source
12/19/1978US4130862 DC Power supply
12/19/1978US4130780 Electronic photoflash
12/12/1978US4129805 Impulse generator for use with phosphor energizable lamps
12/12/1978US4129788 High efficiency DC to DC converter
12/12/1978CA1044318A1 Dc convertor
12/05/1978US4128868 D-C converter using pulsed resonant circuit
12/05/1978US4128867 Power supply regulation using switching transistors
12/05/1978US4128866 Power supply with current foldback
12/05/1978US4128771 Digitally controlled power system
12/05/1978CA1043904A1 Horizontal deflection circuits which include a switched mode power supply
11/1978
11/28/1978US4127895 Charge-transfer voltage converter
11/28/1978US4127894 Converter protection circuit operative to limit and counteract transformer saturation
11/28/1978US4127886 Over-current protection circuit for voltage regulator
11/28/1978US4127885 Over-current protection circuit for voltage regulator
11/28/1978US4127797 Inverter oscillator with current feedback
11/28/1978CA1043430A1 Multi-purpose thyristor commutation circuit
11/21/1978US4126891 Switching regulator with feedback system for regulating output current
11/21/1978US4126889 Protective circuit for d.c. circuit
11/21/1978CA1042977A1 Voltage monitoring controlling and protecting apparatus employing programmable unijunction transistor
11/14/1978US4125814 High-power switching amplifier
11/14/1978US4125444 Electrochemical polishing method
11/14/1978CA1042520A1 Fet load gate compensator
11/14/1978CA1042507A1 Pulse control system power circuit
11/14/1978CA1042504A1 Voltage converter
11/07/1978US4124884 DC to DC converter with regulated input impedance
11/07/1978US4124806 Electronic device for the production of signals of an amplitude greater than the amplitude of a given periodic signal
10/1978
10/31/1978US4123692 Adjustable speed electric motor drive having constant harmonic content
10/31/1978US4123670 Transistor switching circuit
10/31/1978CA1041602A1 Starting circuit for inverter
10/24/1978US4122514 Direct current power supply
10/24/1978US4122513 Power control device
10/17/1978US4121282 Power supply circuit
10/17/1978US4121281 Direct current converter
10/17/1978US4121115 D. C. Power packs, inter alia of the disposable king, for providing a predetermined rated voltage
10/17/1978US4120306 Cardiac pacer with pre-programmed power source interface means
10/10/1978US4120017 Detachable power supply for induction type electrostatic spray gun
10/10/1978US4120016 Detachable cylindrical power supply for induction type electrostatic spray gun
10/10/1978US4119906 Constant high voltage generating circuit
10/10/1978US4119835 Electronic thermostat
09/1978
09/26/1978CA1039354A1 Switching voltage regulator with low rfi noise
09/19/1978US4115707 Circuit for single-line control of GTO controlled rectifier conduction
09/19/1978CA1038928A1 Converter circuit and method having fast responding current balance and limiting
09/05/1978CA1038031A1 Protection circuit for magnetically controlled d-c to d-c converter
08/1978
08/29/1978US4110668 Thyristor pulse controller for plural loads
08/22/1978US4109210 Method of generating a variable train of pulses
08/22/1978US4109194 Digital feedback control utilizing accumulated reference count to regulate voltage output of switching regulator
08/15/1978US4107772 Chopper control device
08/15/1978US4107596 Efficient bidirectional power converter for portable data gathering apparatus
08/15/1978CA1036667A1 Stable power supply
08/08/1978US4106086 Voltage multiplier circuit
08/08/1978US4106084 Means for controlling the electric current density of a high tension direct current source