| Patents for G05F 1 - Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems (37,749) |
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| 05/02/1991 | EP0424742A2 Floating output digital to analog converter |
| 04/30/1991 | US5012178 Low noise DAC current source topology |
| 04/24/1991 | EP0423965A1 An ECL to TTL/CMOS translator using a single power supply |
| 04/24/1991 | CN1012454B Electrical power transfer apparatus |
| 04/23/1991 | US5010293 Inrush current limiting circuit |
| 04/23/1991 | US5010292 Voltage regulator with reduced semiconductor power dissipation |
| 04/23/1991 | US5010279 Switched capacitive ballasts for discharge lamps |
| 04/18/1991 | DE4001092C1 Current-voltage converter without auxiliary power supply - has bridge circuit with two parallel branches, one with fixed voltage divider, other with variable |
| 04/17/1991 | EP0422798A2 Bipolar/CMOS regulator circuits |
| 04/17/1991 | CN2075361U Protector with auto-stabilizing voltage and auxiliary regulating voltage |
| 04/17/1991 | CN1050800A Electric power system with line drop compensation |
| 04/17/1991 | CN1050797A Reactive power compensating system for both high and low voltages |
| 04/16/1991 | US5008609 Voltage generating circuit for semiconductor device |
| 04/16/1991 | US5008586 Solid state current sensing circuit and protection circuit |
| 04/16/1991 | US5007993 Electrolytic processing apparatus and method with time multiplexed power supply |
| 04/16/1991 | CA1283214C Reference generator |
| 04/16/1991 | CA1283167C Reactive power compensation device |
| 04/10/1991 | EP0421689A2 Electric power system with line drop compensation |
| 04/10/1991 | EP0421534A1 Circuit arrangement for power supply to a load |
| 04/10/1991 | EP0421516A2 Power supply arrangement with voltage regulation and current limiting |
| 04/10/1991 | CN2074923U Stabilizing power supply for conmins generator set |
| 04/10/1991 | CN1050625A Self-excitation switching mode voltage stablizer |
| 04/09/1991 | US5006784 Thyristor on-load change-over switch |
| 04/09/1991 | US5006783 Three phase voltage regulator system using tertiary winding transformer |
| 04/09/1991 | US5006737 Transformerless semiconductor AC switch having internal biasing means |
| 04/09/1991 | CA1282827C Alternating current voltage regulator |
| 04/04/1991 | CA2024922A1 Electric power system with line drop compensation |
| 04/03/1991 | EP0419993A2 Parallel circuit module |
| 04/02/1991 | US5004969 Phase control switching circuit without zero crossing detection |
| 03/27/1991 | EP0419093A2 Current sensing circuit |
| 03/26/1991 | US5003456 Circuit for providing fast output current control in a current mode switching power supply |
| 03/26/1991 | US5003454 Power supply with improved power factor correction |
| 03/26/1991 | US5003363 Circuit arrangement and apparatus for non-contacting reference value prescription for an integrated circuit enveloped within non-magnetic material |
| 03/21/1991 | DE4029117A1 Digitally regulating electric welding device - using data storage device to adjust inverter in response to voltage and current instantaneous values |
| 03/20/1991 | EP0418060A2 Temperature compensated voltage regulator and reference circuit |
| 03/19/1991 | US5001649 Linear power control for ultrasonic probe with tuned reactance |
| 03/19/1991 | US5001415 Electrical power apparatus for controlling the supply of electrical power from an array of photovoltaic cells to an electrical head |
| 03/16/1991 | CA2025415A1 Temperature compensated voltage regulator and reference circuit |
| 03/12/1991 | US4999567 Constant current circuit |
| 03/12/1991 | US4999524 Solar array power simulator |
| 03/12/1991 | US4999516 Combined bias supply power shut-off circuit |
| 03/12/1991 | CA1281386C Accurate current conveyor |
| 03/12/1991 | CA1281377C Power controller circuit with automatic correction for phase lag between voltage and current |
| 03/07/1991 | DE3929360A1 Low voltage current control circuit - for compensating voltage fluctuations in high current equipment |
| 03/06/1991 | EP0415490A2 Circuit arrangement for power supply to a load |
| 03/06/1991 | CN2072700U Large scope full-automatic alternating current electronic manostat |
| 03/06/1991 | CN2072699U Three-phase alternating current stabilized phase regulated power supply |
| 03/06/1991 | CN1011896B Power switch controller of washer etc. |
| 03/05/1991 | US4998156 Structure for a complementary-symmetry COMFET pair |
| 03/05/1991 | US4998029 Dual supply ECL to TTL translator |
| 02/27/1991 | EP0414319A1 Circuit for supplying a reference voltage |
| 02/27/1991 | EP0414029A2 Constant-current regulated power circuit |
| 02/26/1991 | US4996519 Method and apparatus for monitoring an amplifier |
| 02/26/1991 | US4996471 Controller for an electrostatic precipitator |
| 02/21/1991 | WO1991002301A1 Electrical switching circuit |
| 02/21/1991 | WO1991001842A1 Pulse welding apparatus |
| 02/20/1991 | EP0413514A2 Load compensating gain control for a series resonant inverter |
| 02/20/1991 | CN2071808U Electronic voltage-regulator for motorcycle |
| 02/20/1991 | CN2071807U Regulated power supply with both positive and negative voltage output |
| 02/19/1991 | US4994981 Method and apparatus for controlling a power converter |
| 02/19/1991 | US4994954 Control circuit for regulating a current flow through a load and use thereof |
| 02/19/1991 | US4994729 Reference voltage circuit having low temperature coefficient suitable for use in a GaAs IC |
| 02/19/1991 | US4994688 Semiconductor device having a reference voltage generating circuit |
| 02/19/1991 | CA1280501C Multiple time delay power controller apparatus |
| 02/13/1991 | EP0412568A2 Matching network and method for using same |
| 02/13/1991 | CN2071356U Voltage stabilizer in bad condition of power supply |
| 02/12/1991 | US4992836 Device for controlling the electrical supply to a load, in a "smart" power integrated circuit |
| 02/12/1991 | US4992723 For a circuit breaker |
| 02/06/1991 | EP0411903A2 Arrangement of automatically restoring normal operation of latch-in relay |
| 02/06/1991 | EP0411855A2 Power control circuit |
| 02/06/1991 | EP0411201A1 Potential generator in an integrated semiconductor circuit |
| 02/06/1991 | CN2070926U Voltage-stabilizer for power source |
| 02/06/1991 | CN2070925U Ac voltage-stabilizing voltage regulator |
| 02/06/1991 | CN1049065A 电路 Circuit |
| 02/05/1991 | US4990846 Temperature compensated voltage reference circuit |
| 01/30/1991 | EP0410866A1 Multioutput power converter |
| 01/30/1991 | EP0410423A2 Multiple power supply system |
| 01/30/1991 | EP0410128A2 Superconductive voltage stabilizer |
| 01/30/1991 | EP0409847A1 Process and circuit versions for charging accumulators. |
| 01/22/1991 | CA1279369C Electrical system utilizing a concentric collector pnp transistor |
| 01/18/1991 | WO1991001594A1 Combined bias supply and power shut-off circuit |
| 01/18/1991 | CA2064085A1 Combined bias supply and power shut-off circuit |
| 01/16/1991 | EP0408534A2 Phase switched power controller |
| 01/16/1991 | EP0408436A1 Detection circuit for a three-phase alternator phase control signal of a vehicle battery charging regulator and its use |
| 01/16/1991 | EP0408124A2 Circuit for protection against negative overvoltages across the power supply of an integrated circuit comprising a power device with related control circuit |
| 01/16/1991 | EP0408028A2 Apparatus for controlling a power supply of an electric machine in a vehicle |
| 01/16/1991 | EP0276296A4 Current-limiting circuit |
| 01/16/1991 | CN1048611A Wide range low-noise a.c.voltage stabilizer |
| 01/15/1991 | US4985821 Indirect current sensing of DC to DC converters |
| 01/15/1991 | US4985804 Microcomputer housing and ventilation arrangement |
| 01/15/1991 | US4985644 Output buffer semiconductor and method for controlling current flow in an output switching device |
| 01/12/1991 | WO1991001063A1 Device with a multiplicity of independent, identical oscillators operating synchronously |
| 01/12/1991 | CA2035887A1 Device with a multiplicity of independent, identical oscillators operating synchronously |
| 01/10/1991 | WO1991000380A1 Electrolytic processing apparatus and method with time multiplexed power supply |
| 01/09/1991 | EP0406609A2 Dual supply ECL to TTL translator |
| 01/09/1991 | EP0151619B1 Two wire circuit having an adjustable span |
| 01/09/1991 | CN2069133U Automatic regulating voltage a.c manostat |
| 01/09/1991 | CN1011164B Var compensator |
| 01/08/1991 | US4984211 Battery backup bus scheme for an ECL BiCMOS SRAM |
| 01/08/1991 | US4983930 Current conveyor |