Patents for H02M 3 - Conversion of dc power input into dc power output (54,461)
03/1981
03/10/1981CA1097404A1 Method and apparatus for operating an internally timed switching regulator
03/10/1981CA1097402A1 Start circuit for a p.w.m. converter
03/10/1981CA1097401A1 Switching regulator
03/04/1981EP0024300A1 Process for pulse-width control of a direct current two-way control element and circuitry for the application of the process
03/03/1981US4254459 Direct current to direct current converter
03/03/1981US4254443 Input surge protection for converter circuit
03/03/1981US4254362 Power factor compensating electroluminescent lamp DC/AC inverter
02/1981
02/24/1981US4253137 Switched-mode power supply
02/24/1981US4253136 Switching regulated power supply apparatus including a resonant circuit
02/24/1981US4253055 Adjustable switching current regulator
02/17/1981US4251857 Loss compensation regulation for an inverter power supply
02/17/1981US4251847 DC Converter
02/17/1981US4251753 Power supply circuit for strobo unit
02/11/1981EP0023623A1 Method for load current detection in a direct current two-way control and circuit arrangement for carrying out the method
02/11/1981EP0023622A1 Method for pulse width control of a direct current two-way control element and circuitry for carrying out the method
02/10/1981US4250541 Push-push resonant power inverter
02/10/1981US4250414 Voltage generator circuitry
01/1981
01/27/1981CA1094635A1 Master-slave voltage regultor employing pulse width modulation
01/22/1981WO1981000178A1 Power conserving type power supply circuit
01/21/1981EP0022725A1 Electromechanic transducers
01/20/1981US4246635 Power-supply device which boosts and stabilizes the voltage
01/20/1981US4246522 Power converter with programmable commutation
01/14/1981EP0022380A1 Switched-mode power supply combined with a television receiver's line deflection circuit and controlled by variable phase-shifting
01/13/1981US4245292 Method of digital control of m-phase thyristor-pulse d-c converters and apparatus for effecting same
01/13/1981US4245289 Power supply monitor
01/13/1981US4245288 Elimination of current spikes in buck power converters
01/13/1981US4245286 Buck/boost regulator
01/13/1981US4245285 Booster-inverter power supply circuit
01/13/1981CA1093638A1 Dc-ac inverter
01/07/1981EP0021867A1 Supply means comprising a chopper, regulated against variations of input voltage and output power, particularly for a television receiver
01/07/1981EP0020978A1 Switching device and its use in a switched power supply
12/1980
12/30/1980US4242629 DC Switching voltage regulator with extended input voltage capability
12/30/1980CA1092689A1 Marine radar system
12/30/1980CA1092650A1 Current regulator for electron microscope power supply
12/23/1980US4241278 Indicator device with vacuum fluorescence elements
12/16/1980US4240134 Switching regulator
12/16/1980US4239988 Turn off method for power transistor switch
12/16/1980US4239373 Full wave rectification apparatus for operation of DC corotrons
12/11/1980WO1980002779A1 A high repetition rate power pulse generator
12/11/1980WO1980002778A1 A dc to dc converter adjustable dynamically to battery condition
12/09/1980US4238695 Comparator circuit having high speed, high current switching capability
12/09/1980US4238690 AC-DC switching regulator to supply uninterruptible power
12/02/1980US4237405 Method and apparatus for conserving energy
11/1980
11/26/1980EP0019096A1 DC-DC converter with current and voltage regulation
11/25/1980US4236199 Regulated high voltage power supply
11/25/1980US4236196 Switching regulator
11/25/1980US4236187 Power supply voltage stabilizer
11/25/1980CA1090418A1 Capacitor charging circuit
11/18/1980US4234249 Tracking power supply for AC and DC corotrons
11/13/1980WO1980002487A1 Voltage-to-frequency-converter
11/12/1980EP0018598A1 Circuit for limiting the switching current in a series circuit consisting of a current transformer, a semi-conductor device, a protection inductance and an overload-sensitive cut-out
11/11/1980US4233659 Defibrillator charging current regulator
11/11/1980US4233558 Regulated dual DC power supply
11/11/1980US4233557 Switching power supply
11/11/1980CA1089530A1 Transit vehicle chopper control apparatus and method
10/1980
10/29/1980EP0018343A1 Current chopper for regulating the supply of a load
10/28/1980US4230981 Current supply installation with voltage-controlled current supply devices connected in parallel on the output side
10/28/1980US4230970 Method and apparatus for saving energy
10/28/1980US4230955 Method of and apparatus for eliminating priming and carrier sweep-out losses in SCR switching circuits and the like
10/28/1980CA1088685A1 Telephone subscriber line circuit
10/14/1980US4228493 Power control circuit and a switching mode power supply employing this circuit
10/01/1980EP0016538A1 DC-DC converter including a high-frequency inverter, and battery charger incorporating same
10/01/1980EP0016537A1 Regulated power supply with loss compensation
09/1980
09/30/1980US4225913 Self-referencing power converter
09/30/1980US4225788 X-ray diagnostic generator comprising an inverter feeding the high voltage transformer
09/23/1980US4224659 Stabilized power supply circuit
09/18/1980WO1980001972A1 Write/restore/erase signal generator for volatile/non-volatile memory system
09/16/1980US4223378 Switching regulator
09/16/1980CA1085917A1 Power supply
09/09/1980US4222100 Power transition circuit
09/09/1980US4222003 Power supply with current limiting
09/03/1980EP0014833A1 Circuit for controlling the output voltage of a switching converter
09/02/1980US4220987 Converter drive circuit
09/02/1980CA1084994A1 Method and apparatus for regulating electrical power delivered from an alternating current network
09/02/1980CA1084993A1 Starting circuit for a pulse width modulated d.c. to d.c. converter
08/1980
08/21/1980WO1980001745A1 Semiconductor circuit for voltage conversion
08/19/1980US4218730 Transistor switching apparatus for use in the control of a D.C. load
08/19/1980US4218728 Polyphase hybrid rectifying bridge with commutation fault protection
08/19/1980US4218647 Voltage regulator with current limiting circuitry
08/19/1980CA1084112A1 Pulse width modulated voltage regulator- converter/power converter having push-push regulator- converter means
08/19/1980CA1084107A1 Operating point regulation for a corona discharge device
08/12/1980US4217634 Voltage and current sources
08/12/1980US4217633 Solar cell system having alternating current output
08/12/1980US4217632 Regulated power supply system including saturable reactor means
08/12/1980CA1083668A1 Compensated base drive circuit to regulate saturated transistor current gain
08/12/1980CA1083662A1 Solenoid driver circuit
07/1980
07/29/1980US4215393 Apparatus for numerical control of thyristor inverter
07/29/1980US4215392 Inverter power supply
07/29/1980US4215391 Power conversion device
07/29/1980US4215296 Television deflection circuit
07/29/1980US4215279 Apparatus for controlling the operation of power transistors in a switching mode
07/29/1980CA1082772A1 Switching power supply
07/29/1980CA1082764A1 Electromechanical chopper for speed control of battery powered devices
07/23/1980EP0013332A1 Chopper circuit
07/22/1980US4214174 Voltage multiplier employing clock gated transistor chain
07/15/1980US4213084 Variable leakage transformer
07/15/1980US4213082 Voltage regulator
07/15/1980US4213049 X-Ray diagnostic generator comprising an inverter feeding the high voltage transformer
07/15/1980US4212157 Solid state clock
07/15/1980CA1081780A1 Switching regulator control utilizing digital comparison techniques to pulse width modulate conduction through a switching device