Controlled current solenoid driver circuit

Details Controlled current solenoid driver circuit Controlled current solenoid driver circuit

1981-09-16

1984-06-12

Rolla, Joseph J.

Dispensing

Motor operated outlet element

361154, B67D 300, H01H 900

Patent

active

044536526

ABSTRACT:
A solenoid driver circuit for a solenoid-operated fluid dispenser in which a valve is operable to dispense a fluid under the control of the solenoid. The driver circuit receives externally applied turn-on and turn-off signals and energizes the solenoid in response to these signals. The driver circuit is responsive to a turn-on signal to couple a pull-in voltage across the solenoid to pull in a solenoid valve armature. The driver circuit is also operable to sense the level of current in the solenoid. When the solenoid current reaches a preset peak current level, the pull-in voltage is removed from the solenoid and replaced by a hold-in voltage. When the hold-in voltage is applied to the solenoid, the driver circuit is operable to control the level of the hold-in voltage in order to maintain a preselected hold-in current in the solenoid. The driver circuit controls the solenoid current so that it makes a gradual transition from the peak solenoid current level to a steady state hold-in current level. The voltage applied to the solenoid to establish the steady state hold-in current is removed by the driver circuit in response to an externally applied turn-off signal.

REFERENCES:
patent: 3205412 (1965-09-01), Winston
patent: 3235775 (1966-02-01), Winston
patent: 3241002 (1966-03-01), Smith
patent: 3293505 (1966-12-01), Miller
patent: 3339120 (1967-08-01), McGrath et al.
patent: 3628102 (1971-12-01), Jauch et al.
patent: 3666232 (1972-05-01), Melcher et al.
patent: 3725678 (1973-04-01), Reddy
patent: 3786314 (1974-01-01), Misch
patent: 3786344 (1974-01-01), Davis et al.
patent: 3789237 (1974-01-01), Doring
patent: 3827604 (1974-08-01), Hamilton et al.
patent: 3889162 (1975-06-01), Myers
patent: 3896346 (1975-07-01), Ule
patent: 3946285 (1976-03-01), Beery et al.
patent: 3982505 (1976-09-01), Rivere
patent: 4148090 (1979-04-01), Kawai et al.
patent: 4180026 (1979-12-01), Schulzke et al.
patent: 4238813 (1980-12-01), Carp et al.
patent: 4314305 (1982-02-01), Williams et al.

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