Patents
Sitemap › H02 - Generation, conversion, or distribution of electric power › H02M - Apparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems; Conversion of dc or ac input power into surge output power; Control or regulation thereof › H02M 1 - Details of apparatus for conversion
Patents for H02M 1 - Details of apparatus for conversion (33,954)
11/1991
11/12/1991US5065302 Adjustable ac power supply equipment for air-conditioner system
11/10/1991CA2036296A1 Uninterruptible power supply with dual level voltage input
11/06/1991EP0454697A1 Device for controlling antiductors.
11/05/1991US5063487 Main and auxiliary transformer rectifier system for minimizing line harmonics
11/05/1991US5063331 High frequency oscillator-inverter circuit for discharge lamps
10/1991
10/09/1991CN1055263A Control module for large scr equipments
10/08/1991US5055992 Control for full-bridge inverter
10/08/1991US5055991 Lossless snubber
10/08/1991US5055990 Snubber circuit for power conversion semiconductor elements and assembly thereof
10/03/1991WO1991015046A1 Power line filter and surge protection circuit components and circuits
10/02/1991EP0449495A2 Electrical power supply
10/02/1991CN1055090A Power component for thyristor converter
10/01/1991US5053940 Extinction blocking for GTOs
09/1991
09/26/1991DE4008904A1 Network supply circuit for LV load resistances - uses trial controlled by ignition circuit with schmitt trigger
09/25/1991EP0448434A1 Rectifier for at least two AC-voltage supply ranges
09/25/1991EP0447989A2 High speed driving circuit for MOSFET transistors
09/25/1991EP0447392A1 Polyphase power converter with ripple filter choke.
09/24/1991US5051603 Method and apparatus for matching turn-off times of parallel connected semiconductor switching devices
09/19/1991DE4009853C1 Circuitry ascertaining start of switch-over time - connects outputs of two OR=gates and via AND=gate for star points of antiparallel thyristor bridges of rectifier or inverter
09/19/1991DE4007593A1 Switch on transient suppression - is provided by capacitive stage coupled to output of regulator
09/18/1991EP0446383A1 Switchmode power supply drawing a sinusoidal current and avoiding input current surges
09/17/1991US5050057 Power source apparatus
09/11/1991EP0445775A2 Switchmode power supply drawing a sinusoidal current and avoiding input current surges
09/10/1991US5047912 Four-terminal unity power factor electronic rectifier
09/10/1991US5047909 Power conversion apparatus with harmonic filtration
09/04/1991EP0444792A2 Automat supply voltage switching circuit
09/04/1991EP0444428A2 PWM-controlled power supply including choke coil with 3 windings
09/03/1991US5045991 Unity power factor AC/DC converter
09/03/1991US5045989 PWM power supply eliminating modulation-frequency components from ground potentials
08/1991
08/21/1991EP0442286A2 Power factor correction circuit
08/20/1991US5041956 Switched-mode power supply circuit including a starting circuit
08/15/1991CA2034799A1 Power factor correction circuit
08/14/1991EP0440765A1 Feeding device for converters, free of harmonic distortion
08/14/1991CN2082916U Controlling device for separately triggering with different angles of many thyratrons
08/06/1991US5038263 Ripple current reduction circuit
08/01/1991DE4038869C1 Current symmetrising circuitry for parallel converters - having branches of semiconductor switches and phase outputs coupled together via choke coils
07/1991
07/30/1991US5036450 Spike limiting circuit
07/30/1991US5036234 Control circuit for triacs
07/30/1991CA1287103C Cmos latch-up recovery circuit
07/25/1991DE4001325A1 DC voltage blocking converter - has control circuit coupled to coils to reduce switching losses
07/24/1991EP0437884A2 DC flyback converter
07/24/1991CN1053332A Control fixture for ac-regulating unit
07/16/1991US5032970 Switching mode power supply start-up circuit
07/16/1991US5032967 SMPS apparatus having a demagnetization circuit
07/16/1991US5032782 Series-connected power-line controller
07/03/1991EP0435628A2 Inverter device
07/03/1991EP0435390A2 Half-bridge driver which is insensitive to common mode currents
07/02/1991US5028825 Self-powered SCR gate drive circuit with optical isolation
06/1991
06/27/1991WO1991009454A1 Dc-link ripple reduction circuit
06/27/1991WO1991009439A1 Lossless snubber circuit
06/26/1991EP0433966A1 Method and circuiting for driving a plurality of triacs
06/25/1991CA1285321C Method and device for driving semiconductor power components
06/23/1991CA2032917A1 Method and circuit for gating plural triacs
06/19/1991EP0433144A1 Switch mode AC-DC power supply
06/18/1991CA1285047C Apparatus for stabilizing turbine-generator shaft torsional oscillations
06/18/1991CA1285022C Filter unit with electrochemical capacitors for a static power converter
06/12/1991EP0431778A1 AC to DC power conversion circuit with low harmonic distorsion
06/12/1991EP0431048A1 Power control circuit for inductive loads
06/11/1991US5023767 Highly efficient conversion circuit for power supplies
06/08/1991WO1991009451A1 Filter arrangement
06/08/1991CA2074260A1 Filter arrangement
06/06/1991DE4038299A1 Protecting electronic switches in self-controlled rectifiers - using galvanic isolation paths to communicate switching states between control logic elements of firing circuits
06/05/1991EP0430715A1 Power factor maintenance system
06/05/1991EP0430242A2 Protective circuit for diode switching device
06/04/1991US5021936 PWM power converter using mixed bipolar and static induction transistors
06/04/1991US5021679 Power supply and oscillator for a computer system providing automatic selection of supply voltage and frequency
06/02/1991CA2031304A1 Power factor maintenance system
05/1991
05/29/1991EP0429310A2 Zero-current switching forward power conversion
05/28/1991US5019959 Discharge tube
05/28/1991US5019957 Forward converter type of switched power supply
05/28/1991US5019954 AC/DC conversion with reduced supply waveform distortion
05/28/1991US5019952 AC to DC power conversion circuit with low harmonic distortion
05/23/1991WO1991007809A1 Apparatus for a balanced three phase ac power supply in a computer having variable dc loads
05/22/1991EP0428007A2 Uninterruptible power supply
05/21/1991US5017991 Light quenchable thyristor device
05/21/1991CA2021615A1 Ac to dc power conversion circuit with low harmonic distortion
05/21/1991CA1284348C Bidirectional motor drive circuit
05/15/1991EP0427709A2 Power control circuit
05/14/1991US5016157 VSCF system with DC link harmonics control
05/14/1991CA1284175C Forward converters used in switching power supplies
05/10/1991WO1991007808A1 An uninterrupted power supply system having improved power factor correction circuit
05/10/1991CA2069896A1 Uninterrupted power supply system having improved power factor correction circuit
05/08/1991EP0426103A2 Electronic circuit device for protecting electronic circuits from unwanted removal of ground terminal
05/07/1991US5014180 Lossless snubber circuit
05/07/1991US5014177 DC-link ripple reduction circuit
05/07/1991US5014176 Switching converter with spike limiting circuit
05/02/1991WO1991006047A1 Reverse phase control switching circuit and method without zero crossing detection
05/02/1991EP0425039A2 Power supply circuit for direct voltage regulators with step-up configuration
04/1991
04/30/1991US5012400 DC/AC power converting apparatus including DC component remover
04/30/1991US5012161 Power factor correction circuit
04/24/1991EP0423455A2 Self-powered SCR gate drive circuit with optical isolation
04/23/1991US5010470 Current balancing structure for semiconductor switching devices
04/23/1991US5010469 Uninterruptible power supply with dual level voltage input
04/23/1991US5010277 Electronic converter supplied by an alternating current distribution network
04/18/1991DE4016742C1 Switching signal generating circuitry - supplies stored switch=on or switch-over signals to control groups of antiparallel thyristor bridges of current converter or inverter
04/18/1991DE3934281A1 AC inverter half bridge circuit - has input switching stages with capacitor and inductance stages
04/16/1991US5008599 Power factor correction circuit
04/16/1991US5008586 Solid state current sensing circuit and protection circuit
04/09/1991US5006975 Power factor correction circuit
04/04/1991DE4007579C1 Low current control circuitry for thyristor setter - discharges capacitor to trigger dials via current regulating stages working practically independent of supply voltage
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