Electromagnetic solenoid drive apparatus in a vehicle

Details Electromagnetic solenoid drive apparatus in a vehicle Electromagnetic solenoid drive apparatus in a vehicle

1989-03-29

1991-03-05

Pellinen, A. D.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

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

361194, 361205, 307 101, H01H 4700

Patent

active

049981773

ABSTRACT:
An electromagnetic solenoid drive apparatus for use in a vehicle for turning on an electromagnetic solenoid from a battery every time when a command switch is turned on comprises first and second resistors connected in series to each other on an electric line for flowing an electric current through the electromagnetic solenoid; a first switching element turned on in a state in which an output voltage of the battery is lower than a predetermined threshold voltage and short-circuiting both ends of the first resistor; a timer circuit operated for only a constant time in association with the turning-on operation of the command switch; and a second switching element turned on during only the operating period of the timer circuit and short-circuiting both ends of the second resistor.

REFERENCES:
patent: Re24671 (1959-07-01), Jensen
patent: 922218 (1909-05-01), Valkenburg
patent: 1007671 (1911-11-01), Buente et al.
patent: 1909855 (1933-05-01), Devine
patent: 3396314 (1968-08-01), Corson et al.
patent: 3590334 (1971-06-01), Baker
patent: 4086503 (1978-04-01), Fox et al.
patent: 4214290 (1980-07-01), Sloan

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