Solenoid valve driver

Details Solenoid valve driver Solenoid valve driver

1989-01-06

1990-10-16

Pellinen, A. D.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

For relays or solenoids

361171, H01H 4722

Patent

active

049640143

ABSTRACT:
A solenoid current control system includes a microprocessor which periodically generates a desired peak current value and which energizes the solenoid coil. Current through the coil is sensed via a series resistor and the sensed current is compared to the desired peak current by comparator. The comparator generates an interrupt signal when the sensed current reaches the desired peak value. The interrupt signal is applied to the microprocessor which responds by de-energizing the coil.

REFERENCES:
patent: 4173259 (1979-11-01), Heckenkamp
patent: 4618908 (1986-10-01), Anttila
patent: 4661766 (1987-04-01), Hoffman et al.
patent: 4737882 (1988-04-01), D'Onofrio
patent: 4817499 (1989-04-01), Bellanger et al.
Steiger, "TPH Operating Information", pp. 12-1 to 12-8 JI Case, "Electronic Hitch Alignment", pp. 8009-3 to 8009-3 to 8009-13 and 8010-10 to 8010-13, 1988.
M. Venturini & M. Maytum, "Permanent Magnet DC Motor Control" Power Conversion International, Jul./Aug. 1983, pp. 55-57.
J. Hobbs and H. Hesse, "Electronic/Hydraulic Hitch Control for Agricultural Tractors", 1980, SAE Paper 801018, International Off-Highway Meeting & Expo. Mecca, Milwaukee, Sep. 8-11, 1980.

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