Method for regulating the power supply to a direct- current...

Details Method for regulating the power supply to a direct- current... Method for regulating the power supply to a direct- current...

H - Electricity

02

P

318/120

H02P 1/18 (2006.01) H02P 7/29 (2006.01)

Patent

CA 1174270

A METHOD FOR REGULATING THE POWER SUPPLY TO A DIRECT-CURRENT MOTOR AND A DEVICE FOR THE APPLICATION OF SAID METHOD Abstract of the Disclosure The power supply to an electric actuating motor is regulated by reducing the differences between current intensity or voltage and a reference value. Two trans- ducers measure the current intensity and the voltage. A selection stage chooses the higher of the two values and a comparison stage delivers a difference signal with respect to the reference value established by a stage of the potentiometer type. A regulator produces an action which is compared within a comparator with a sawtooth signal emitted by an oscillator. Depending on the sign of the comparison, a control stage supplies the motor during a variable fraction of the period of the oscillations. -1-

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