Patents for H02M 1 - Details of apparatus for conversion (33,954)
04/1994
04/28/1994CA2147152A1 Device having a dc/dc voltage converter for switched-mode operation
04/28/1994CA2147147A1 Method of operating a voltage converter, and a voltage converter and its application
04/28/1994CA2126443A1 A boost-converter with low losses
04/27/1994EP0593737A1 Dual snubber circuit
04/27/1994EP0593628A1 Power mosfet driver with cross-conduction current reduction
04/26/1994US5307003 Varying the supply voltage in response to the current supplied to a computer system
04/21/1994DE4234772A1 Verfahren zum Betreiben eines Spannungswandlers sowie Spannungswandler und Anwendung A method of operating a voltage converter, and voltage converter and application
04/21/1994DE4234771C1 Einrichtung mit einem Gleichspannungswandler für den Schaltbetrieb Means including a DC-DC converter for switching operation
04/20/1994EP0593258A2 Power supply
04/20/1994EP0592889A2 Switch-mode voltage converter
04/20/1994EP0592696A1 Snubber circuit for an inverter branch
04/20/1994CN1085696A Switch mode power supply with reduced input current distortion
04/05/1994US5301095 High power factor AC/DC converter
04/05/1994US5301085 Control circuit for a semiconductor switch
03/1994
03/31/1994DE4232283A1 Low-reactive feedback-type static converter arrangement - comprises circuit arrangement consisting of inductance, electronic switch, and rectifying component
03/30/1994EP0588843A1 Switch mode power supply with reduced input current distortion.
03/25/1994CA2079014A1 Power interface for use in a harsh environment and for generating a power signal
03/24/1994DE4305339A1 Arc welding and cutting current source - of inverter type, connectable to single phase and three-phase networks
03/23/1994EP0588635A1 Gate power supply circuit
03/23/1994EP0588173A2 Switch mode power supply with standby mode operation
03/23/1994EP0588172A2 Switch mode power supply with reduced input current distortion
03/23/1994EP0588168A2 Switch mode power supply with feed-forward pulse limit control
03/23/1994EP0588011A1 Circuit for feeding back commutation energy in an inverter having two or three poles and method for feeding back the commutation energy
03/23/1994CN1084330A Functional thyristor phaseshift trigger
03/22/1994US5297015 Power supply control system
03/22/1994CA1327992C Dc/ac power converting apparatus including dc component remover
03/17/1994WO1994006260A1 Current crossover-controlled blocking oscillator
03/17/1994WO1994006028A1 A method and a device for checking the condition of semiconductor valves
03/16/1994EP0586885A1 DC power-supply unit
03/10/1994DE4328748A1 Rectifier - Has resonant circuit with inductor, capacitor and triacs, with load in parallel with capacitor
03/09/1994EP0585788A1 Switched mode power supply integrated circuit with start-up self-biasing
03/09/1994EP0491689B1 Device and process for optimum operation of a power converter connected to a power supply
03/08/1994US5293111 Method for minimizing the switching loss in a power switch
03/06/1994CA2100823A1 Protective circuit with feedback capability for two-point and three-point inverters, and method of feeding back the protective-circuit energy
03/03/1994WO1994007300A1 Snubber circuit, switching power-supply, and saturable inductor used for them
03/03/1994DE4228640A1 Stromnulldurchgangsgesteuerter Sperrwandler Zero current controlled flyback converter
03/03/1994DE4228480A1 DC supply stage for communications appts. - includes LC filter using triode circuit acting as impedance to reduce energy loss
03/02/1994EP0585077A1 Power supply circuit with power factor correction
03/02/1994EP0584873A1 Delay means for delaying the start of a converter after turn on
03/02/1994EP0584660A2 Method and circuit arrangement for reduction of harmonics
03/01/1994US5291387 Switching voltage regulator with protective device against thermal breakdown
03/01/1994US5291119 Low distortion alternating current output active power factor correction circuit using two bi-directional switching regulations
02/1994
02/26/1994CA2101144A1 Power supply circuit with power factor correction
02/24/1994DE4227183A1 Electronic circuit to provide a starting voltage for another circuit - uses power supply to charge up capacitor, then thyristor fires to allow second capacitor to charge up
02/23/1994EP0583841A2 Switch mode power supply
02/22/1994US5289364 Power supply for an electronic device
02/22/1994US5289361 Adaptive boost switching preregulator and method
02/21/1994CA2104251A1 Switch mode power supply
02/16/1994EP0582814A2 Dropout recovery circuit
02/16/1994EP0582813A2 Critically continuous boost converter
02/15/1994US5287263 Inrush current control circuit
02/08/1994US5285374 Apparatus for generating digital signal synchronized with phase of power supply
02/08/1994US5285369 Switched mode power supply integrated circuit with start-up self-biasing
02/02/1994EP0580919A1 Frequency modulated switching power supply
02/02/1994CN1081544A Controllable and power-adjustable type silicon control zero-cross trigger
02/01/1994US5283727 Independent control of the AC line current and output DC voltage of a high power factor AC-to-DC converter
02/01/1994US5283726 AC line current controller utilizing line connected inductance and DC voltage component
01/1994
01/27/1994DE4224037A1 N-lines tuned filter circuit for energy distribution network - has series circuit of capacitor and inductor, and n-1 parallel circuits of capacitor and inductor connected in series
01/27/1994DE4221608C1 DC voltage converter suppressor - has active suppressor filter fitted between supply connections and input connections of converter and incorporates linear regulator transistor
01/26/1994EP0580237A1 Power factor correction circuit
01/26/1994EP0580192A2 A circuit device for preventing saturation of the transformer in a DC/AC converter having a feedback-regulated inverter
01/26/1994EP0579653A1 Start-up circuit for a switching network
01/25/1994US5282126 Start circuit for a switched mode power supply
01/25/1994US5282125 Power generation system with soft-start circuit
01/25/1994US5281862 Power MOSFET driver with cross-conduction current reduction
01/25/1994CA1326507C Transfection high voltage controller
01/19/1994CN2153903Y Current supply inverter optimal pulsewidth modulation signal generator for transistor
01/13/1994DE4321988A1 Circuit for two-point inverter switching pole - has power capacitor coupled to junction points between relief diodes and capacitors of two semiconductor series connections
01/12/1994EP0577704A1 Power supply having high power factor with control that tracks the input alternating supply
01/12/1994CN1080791A Multi-function single-chip computer silicon controlled toggle
01/11/1994US5278748 Voltage-resonant DC-DC converter
01/06/1994WO1994000908A1 Power factor correction circuit for ac to dc power supply
01/05/1994DE4321060A1 AC=DC converter - has first and second switching transistors with circuit detecting their respective switching time points and control drive circuit
01/05/1994CN1023436C Controller for more thyratrons with different trigger angles
12/1993
12/29/1993EP0575589A1 Controlled power supply
12/29/1993EP0575582A1 Gto module with stacked bypass diode
12/29/1993EP0416050B1 A device with a multi-phase load, a static converter and choke coils
12/28/1993US5274542 Control device of neutral point clamped power inverter apparatus
12/28/1993US5274540 Inverter device for stable, high power-factor input current supply
12/28/1993US5274274 Power controller
12/23/1993WO1993026078A1 High power factor switched dc power supply
12/23/1993DE4219644A1 Load reduction circuit for hf pulse rectifier - uses inductors on primary side for switch-on load reduction of semiconductor switch pairs
12/23/1993DE4217234C1 Voltage limiting circuit for current cut=out electronic extinction device - has parallel circuit across extinction capacitor limiting capacitor voltage using nonlinear resistance and GTO thyristor
12/22/1993EP0575131A1 Control device for thyristor converter
12/21/1993US5272613 Cascaded rectifier and two switched voltage converter circuits with harmonics suppression
12/16/1993DE4219214A1 Attenuation circuit for signal harmonics - uses tuned filter coupled to tap-off of duplex filter inserted between current regulator and AC network
12/15/1993EP0573836A2 Electric power converter
12/15/1993EP0573828A2 Improvement in power supplies
12/09/1993WO1993025952A1 Dimmable high power factor high-efficiency electronic ballast controller integrated circuit with automatic ambient over-temperature shutdown
12/09/1993WO1993024987A1 Dual active clamp power converter
12/08/1993EP0572706A1 Control circuit for a power-FET with a load connected to its source
12/08/1993CN1079343A Digital phase shifter for controlling thyristors
12/07/1993US5268830 Drive circuit for power switches of a zero-voltage switching power converter
12/01/1993CN1079082A Chopping controlled rectification and ac voltageregulation circuit
11/1993
11/30/1993USRE34462 Start circuit for generation of pulse width modulated switching pulses for switch mode power supplies
11/30/1993US5267135 Power supply apparatus having interlocking operating system
11/30/1993US5267133 Switching power source
11/30/1993US5267132 High power switching power supply with high power factor
11/25/1993WO1993023974A1 Stable power supply with high power factor
11/25/1993WO1993023917A1 Dual snubber circuit