Solenoid control circuit

Details Solenoid control circuit Solenoid control circuit

1980-07-17

1982-06-22

Miller, J. D.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

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

367 85, G01V 114

Patent

active

043365647

ABSTRACT:
In response to a signal to open and close a solenoid-operated valve, which is urged closed by flow of fluid through it, a circuit supplies a large current to the solenoid to open the valve, reduces the current to hold the valve open, and interrupts the current to close the valve. The circuit provides high electrical efficiency during operation. One embodiment of the invention is particularly suitable for use in systems in which the voltage of the power source varies over a wide range.

REFERENCES:
patent: 3594615 (1971-07-01), Cortelli
patent: 3736558 (1973-05-01), Cubberly, Jr.
patent: 3737736 (1973-06-01), Stampfli
patent: 3766432 (1973-10-01), Markowitz et al.
patent: 3864608 (1975-02-01), Normile et al.
patent: 3943416 (1976-03-01), Degenhart
patent: 3943476 (1976-03-01), Iyeta
patent: 4027282 (1977-05-01), Jeter
Farman, A. A., "Economical Relay", Practical Electronics, vol. 13, No. 3, Mar. 1977, p. 222.

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