| 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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| 02/17/1981 | US4251743 Current source circuit |
| 02/17/1981 | US4251736 Method for controlling power flow between an electrochemical cell and a power grid |
| 02/17/1981 | US4251735 Dual speed control circuit for power flow through an inverter |
| 02/10/1981 | US4250445 Band-gap voltage reference with curvature correction |
| 02/03/1981 | US4249236 Controller for power converter |
| 01/27/1981 | CA1094651A1 Zero temperature coefficient reference circuit |
| 01/22/1981 | WO1981000159A1 Output voltage-drop detecting apparatus |
| 01/20/1981 | US4246635 Power-supply device which boosts and stabilizes the voltage |
| 01/13/1981 | US4245294 Power supply providing constant power output |
| 01/13/1981 | US4245293 Power converter system |
| 01/13/1981 | CA1093639A1 Dc static switch circuit with power saving feature |
| 12/30/1980 | US4242630 Ferroresonant voltage regulator incorporating auxiliary winding for large current magnitudes of short duration |
| 12/30/1980 | CA1092649A1 Power control means for a single phase load |
| 12/30/1980 | CA1092648A1 Circuit for controlling the voltage applied to an anodized aluminium colouring bath |
| 12/16/1980 | US4240025 Feeding system for incandescent lamps by overhead wires of transmission lines |
| 12/09/1980 | US4238812 Circuit protection devices comprising PTC elements |
| 12/09/1980 | US4238723 Power control system |
| 12/09/1980 | US4238681 X-ray diagnostic generator |
| 12/09/1980 | US4237897 Battery life extender |
| 12/02/1980 | US4237413 Circuit arrangement for stabilizing a direct current |
| 12/02/1980 | US4237405 Method and apparatus for conserving energy |
| 11/26/1980 | EP0019095A1 Regulated voltage current supply circuits |
| 11/25/1980 | CA1090419A1 Fail-safe circuit for tap-changing transformer regulating system |
| 11/18/1980 | US4234842 Voltage regulator and flicker compensator |
| 11/18/1980 | US4234249 Tracking power supply for AC and DC corotrons |
| 11/11/1980 | US4233666 Drive power sequencing |
| 11/11/1980 | US4233546 Stroboscopic beacons fed from a capacitive source |
| 11/04/1980 | US4232363 AC to DC Converter with enhanced buck/boost regulation |
| 11/04/1980 | US4232261 MOS Control circuit for integrated circuits |
| 10/29/1980 | EP0017731A1 A potentiostat for use with electrochemical cells |
| 10/21/1980 | US4229690 Single phase power control circuit |
| 10/15/1980 | EP0016756A4 Circuit for energising a gas discharge lamp. |
| 10/15/1980 | EP0016756A1 Circuit for energising a gas discharge lamp. |
| 10/14/1980 | US4227988 Potentiostat for use with electrochemical cells |
| 10/07/1980 | US4227029 Method and apparatus for eliminating D.C. in an electric glass melting furnace |
| 10/07/1980 | CA1087284A1 Engine speed and direction control |
| 09/30/1980 | CA1086822A1 Crest firing means |
| 09/23/1980 | US4224662 Power supply unit for a plasma plant |
| 09/23/1980 | US4224563 Regulator circuit for photographic illumination |
| 09/23/1980 | US4224562 Voltage regulator with electrically isolated output stage |
| 09/23/1980 | US4224536 Stabilization of monolithic integrated circuit output levels |
| 09/17/1980 | EP0015666A1 Apparatus for controlling electrical power consumption |
| 09/17/1980 | EP0015641A2 Power factor improving apparatus for power converter |
| 09/17/1980 | EP0015317A2 Line current supply circuitry for the electrical equipment of a household appliance |
| 09/17/1980 | EP0015304A1 Method and device for charging a capacitor |
| 09/16/1980 | US4223207 Apparatus for controlling the power supplied to a load |
| 09/16/1980 | CA1085921A1 Method of improving the temperature stability of a voltage source, and a stabilized voltage source for carrying out the method |
| 09/16/1980 | CA1085919A1 Electronic power control device |
| 09/09/1980 | CA1085495A1 Control circuits in or for washing, drying and the like machines or other apparatus |
| 09/03/1980 | EP0014873A1 Method of melting vitreous materials and use of the suitable device for the accomplishment of the method |
| 09/03/1980 | EP0014833A1 Circuit for controlling the output voltage of a switching converter |
| 09/02/1980 | US4220911 Thyristor tap changer for electrical inductive apparatus |
| 09/02/1980 | CA1084994A1 Method and apparatus for regulating electrical power delivered from an alternating current network |
| 08/26/1980 | US4219872 Power supply |
| 08/26/1980 | US4219759 Three phase power control unit |
| 08/12/1980 | US4217634 Voltage and current sources |
| 08/05/1980 | US4216435 Voltage-to-current converter apparatus |
| 08/05/1980 | CA1083217A1 Balanced a-c control circuit |
| 07/29/1980 | CA1082771A1 Dc voltage control device |
| 07/23/1980 | EP0013615A1 Apparatus for controlling a.c. motor |
| 07/22/1980 | US4214176 Stabilized current sources network |
| 07/15/1980 | CA1081780A1 Switching regulator control utilizing digital comparison techniques to pulse width modulate conduction through a switching device |
| 07/15/1980 | CA1081775A1 D.c. voltage regulated inverter |
| 07/09/1980 | EP0013102A1 Power supply providing constant power output |
| 07/09/1980 | EP0013099A1 Semiconductor integrated circuit device including a reference voltage generator feeding a plurality of loads |
| 07/09/1980 | EP0012839A1 Method and device for adjusting the different time delays of semiconductor chips by changing the working voltage |
| 07/08/1980 | US4211940 Electronic power control device |
| 07/08/1980 | CA1081323A1 Dv/dt protection for solid state switches |
| 07/01/1980 | US4210860 VAR Generator with current sensitive inductance break point |
| 07/01/1980 | CA1080827A1 Method of steering a spacecraft and of regulating its onboard supply voltage |
| 06/25/1980 | EP0012634A1 Voltage regulator device, in particular for portable television receiver |
| 06/25/1980 | EP0012206A1 Regulated power supply circuits |
| 06/24/1980 | US4209753 Amplifier programmable in gain and output polarity |
| 06/24/1980 | US4209738 Regulation circuit |
| 06/17/1980 | US4208706 Switching regulator |
| 06/17/1980 | CA1079804A1 Voltage sequencing circuit for sequencing voltage to an electrical device |
| 06/11/1980 | EP0011863A1 Current controller for an electrical load |
| 06/10/1980 | US4207475 Efficient bipolar regulated power supply |
| 06/10/1980 | CA1079379A1 Electronic arrangement for generating two alternating voltages whose phases are shiftable relative to each other |
| 06/03/1980 | US4206397 Two wire current transmitter with improved voltage regulator |
| 05/27/1980 | CA1078467A1 Input impedance matching of a bipolar transistor employing a coaxial transformer |
| 05/20/1980 | US4204249 Data processing system power control |
| 05/20/1980 | US4204151 Static VAR generator with non-linear frequency dependent dynamic gain adjuster |
| 05/20/1980 | US4204147 Power transfer apparatus |
| 05/06/1980 | US4202032 Zinc, halogen, pressure |
| 05/06/1980 | CA1077136A1 Pulse width modulated power supply circuit |
| 04/30/1980 | EP0010502A1 Variable inductance |
| 04/29/1980 | US4200833 Power maximization circuit |
| 04/29/1980 | US4200796 Storage cell type X-ray apparatus |
| 04/29/1980 | US4200108 Electromedical apparatus |
| 04/22/1980 | US4199804 Method and apparatus for controlling the alternating voltage of a static convertor |
| 04/15/1980 | CA1075768A1 Alternating current controlling system |
| 04/01/1980 | CA1074875A1 Power adjustment with variable frequency and duty-cycle control for induction heating apparatus |
| 03/25/1980 | CA1074437A1 Malfunction detecting apparatus for use in a crt deflection circuit |
| 03/25/1980 | CA1074399A1 Band gap voltage regulator circuit including a merged reference voltage source and error amplifier |
| 03/19/1980 | EP0008897A1 Constant-voltage power source device |
| 03/19/1980 | EP0008708A1 Circuitry with DC converters connected in parallel |
| 03/04/1980 | US4191512 Apparatus and method for controlling pressure ratio in high vacuum vapor pumps |
| 03/04/1980 | CA1073050A1 Electrical network voltage control device |
| 02/19/1980 | US4189670 Power circuit for different stabilized DC voltages |