Proportional solenoid valve control circuit

Details Proportional solenoid valve control circuit Proportional solenoid valve control circuit

1987-02-09

1988-04-12

Hix, L. T.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

Systems for magnetizing, demagnetizing, or controlling the...

361160, H01H 4732

Patent

active

047378824

ABSTRACT:
A proportional solenoid valve control circuit uses a solenoid current driver, a feedback circuit for providing a feedback signal representative of an output current supplied by the drive means, input signal means for connection to a source of a control signal representative of a desired current to be supplied by the driver means, signal comparison means for comparing the feedback signal with the control signal to produce an error signal representing the difference therebetween, timer means connected to the comparison means for producing an output signal having a frequency dependent on the magnitude of the error signal and a circuit for applying the output signal to the current driver to produce the output current from the driver proportional to the output signal.

REFERENCES:
patent: 4516185 (1985-05-01), Culligan et al.

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