Patents
Sitemap › G05 - Controlling; Regulating › G05F - Systems for regulating electric or magnetic variables › 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
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)
11/1981
11/04/1981EP0039215A1 Temperature compensating voltage generator circuit
11/03/1981US4298939 Method and apparatus for applying a regulated voltage
11/03/1981US4298924 Switching regulator circuit with phase shift subtraction
11/03/1981US4298835 Voltage regulator with temperature dependent output
11/03/1981US4298811 MOS Voltage divider
11/03/1981US4298334 Dynamically checked safety load switching circuit
10/1981
10/21/1981EP0037818A1 Current source having saturation protection.
10/20/1981US4296369 Active quadrature current reference source
10/13/1981US4295188 Converter circuit providing isolation and load sensing
10/13/1981CA1110696A1 Saturable reactor-type power supply
10/06/1981US4292968 Electric supply for ion therapy
09/1981
09/23/1981EP0036267A1 Cycloconverter with waveform improving feedback
09/15/1981US4290007 High power and high voltage transistor control circuit
09/08/1981US4288737 Regulator-compensator control
09/08/1981US4288729 Control system for D.C. electric motor
09/08/1981CA1108697A1 Fast current measurement apparatus for static var generator compensator control circuit and method for using same
09/01/1981US4287549 Circuit for charging a release magnet energizing capacitor in a camera
09/01/1981US4287467 Constant-voltage generator for integrated circuits
09/01/1981US4287437 Method and circuitry for equalizing the differing delays of semiconductor chips
09/01/1981CA1108232A1 Device for converting solar energy
08/1981
08/25/1981US4286207 High-power AC voltage stabilizer
08/25/1981US4286206 Load-responsive treater controller
08/25/1981CA1107864A1 Power confidence system
08/20/1981WO1981002348A1 Bandgap voltage reference employing sub-surface current using a standard cmos process
08/19/1981EP0033890A1 Power source apparatus for an electric flash lamp
08/19/1981EP0033842A2 Method for mains feedback of a line commutated direct converter and control circuit therefor
08/18/1981US4285023 Rectifier system with failure alarm circuitry
08/18/1981CA1107335A1 Method and apparatus for induction heating and melting furnaces to obtain constant power
08/11/1981US4283674 Constant voltage output circuit
08/04/1981US4282570 Method and apparatus for controlling an output current of a controlled rectifier
08/04/1981US4282478 Reference current supply circuits
08/04/1981US4282422 Power control for appliance using multiple high inrush current elements
08/04/1981CA1106444A1 Reactive power control apparatus
07/1981
07/28/1981US4281377 Power supply circuits
07/28/1981US4281371 Cycloconverter with waveform improving nonlinear feedback
07/28/1981US4281282 High positive and negative voltages programmed by a low voltage returned to common
07/28/1981US4281281 Reference voltage source
07/28/1981CA1105995A1 Temperature compensated low voltage reference
07/21/1981US4280091 Variable current source having a programmable current-steering network
07/21/1981US4280088 Reference voltage source
07/21/1981US4280038 Method and apparatus for inducting heating and melting furnaces to obtain constant power
07/15/1981EP0031987A1 Reference voltage generating circuit in DC regulated power source apparatus
07/14/1981US4278929 Regulated negative voltage supply
07/09/1981WO1981001937A1 Device for stabilization of electron beam current
07/01/1981EP0030980A1 Stabilized dc power source
06/1981
06/30/1981US4276591 Programmable power regulating power supply
06/30/1981US4276590 Current sharing modular power system
06/30/1981CA1104208A1 Phase control apparatus
06/25/1981WO1981001776A1 Converter circuit providing isolation and load sensing
06/24/1981EP0030829A2 Converter of blocking oscillator type
06/23/1981US4275347 Precision cathode current regulator
06/17/1981EP0030445A2 High power and high voltage transistor control circuit
06/16/1981US4274042 AC Motor drive system having clamped command error signal
06/11/1981WO1981001634A1 Switching device for regulating the supply of a consumer apparatus
06/10/1981EP0030026A1 Circuit arrangement for the regular supply to a user
06/09/1981CA1102873A1 Regulation circuit
06/09/1981CA1102871A1 Power control circuit
06/03/1981EP0029744A1 Solar powered automatic turn-on control unit
06/03/1981EP0029743A1 Method of and apparatus for enabling output power of solar panel to be maximised
06/02/1981US4271460 Soft turn-on power
06/02/1981US4271404 Power supply controller in a keyboard-equipped apparatus such as an electronic calculator
06/02/1981US4271387 Method and system of controlling effective value of alternating current
05/1981
05/26/1981US4270157 Power supply protection circuit
05/26/1981US4270092 Current controlling circuitry for logical circuit reference electric level circuitry
05/26/1981US4270082 Open-circuit shunt-regulated high-voltage circuit
05/26/1981US4270081 Constant-current circuit
05/19/1981US4268790 Programmable high voltage power supply with negative ground
05/19/1981CA1101551A1 Memory circuit with protection circuit
05/19/1981CA1101489A1 Electrostatic coating system
05/12/1981US4267487 Regulated filament supply for high-power tubes
05/12/1981CA1101061A1 Dc series voltage regulator with gating means for output to remain off until regulation level is reached
05/12/1981CA1101059A1 Limit cycling regulator apparatus for plural parallel power sources
05/05/1981US4266189 Current measuring apparatus and method
04/1981
04/28/1981US4264951 DC Power transmission control
04/22/1981EP0027405A1 Control device for the maximum power output of a photovoltaic converter
04/21/1981US4263544 Reference voltage arrangement
04/21/1981US4263517 Control method and system for an high voltage direct current system
04/15/1981EP0026866A1 Battery charger
04/14/1981US4262256 Energy extraction system from a capacitive source with shunt switching regulation
04/14/1981CA1099373A1 Voltage regulation in an electronic engine control system having digital effector actuators
04/08/1981EP0026260A1 Device for controlling the voltage between two conductors of an A.C. supply mains for a rapidly changing load
04/07/1981US4260948 Method and apparatus for controlling electric valves in AC power supply
04/07/1981US4260946 Reference voltage circuit using nested diode means
04/07/1981US4260936 Master-slave power amplifiers
04/07/1981CA1099030A1 Storage cell type x-ray apparatus
04/02/1981WO1981000935A1 Stabilizer of charging-discharging current for accumulators
04/02/1981WO1981000924A1 Current source having saturation protection
04/01/1981EP0026048A1 Method of and means for controlling operation of electric devices
04/01/1981EP0026033A1 D.C. power supply
03/1981
03/24/1981US4258406 Protecting circuit
03/24/1981US4258311 Constant voltage generator for generating a constant voltage having a predetermined temperature coefficient
03/19/1981WO1981000795A1 Method of and means for controlling electrical devices
03/17/1981US4257080 Current limiting devices
03/17/1981US4256951 Repetition rate power control for appliance using high current inrush elements
03/17/1981CA1097739A1 Single phase power control circuit
03/11/1981EP0024661A1 Enhanced protection power supply
03/10/1981US4255699 Phase modulated power control
03/10/1981US4255690 Cathode heating apparatus for an electronic power tube
03/10/1981CA1097401A1 Switching regulator
03/03/1981US4254372 Series pass voltage regulator with overcurrent protection
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