Solenoid valve drive system

Details Solenoid valve drive system Solenoid valve drive system

1997-12-17

1999-08-17

Lee, Kevin

Valves and valve actuation

Electrically actuated valve

361155, 361156, F16K 3106

Patent

active

059381728

ABSTRACT:
A solenoid valve drive system includes a step-up circuit that produces a first high voltage by using a switching device to on/off control supply of current from a battery to a step-up coil and stores the first high voltage in a first capacitor as a high voltage for initial high-voltage driving of a solenoid valve, a second capacitor, and a discriminating circuit for discriminating the level of the charge voltage of the second capacitor. The second capacitor is charged by high voltage from the step-up circuit only when the charge voltage of the second capacitor has not reached a prescribed level. The system can efficiently produce two types of high voltages without enlarging circuit size.

REFERENCES:
patent: 4112477 (1978-09-01), Sherwin
patent: 4718454 (1988-01-01), Appleby
patent: 4925156 (1990-05-01), Stoll et al.
patent: 5631801 (1997-05-01), DuPuy

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