D.C. solenoid control circuit
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United States of America Patent
Stats
-
Jun 20, 1989
Grant Date -
N/A
app pub date -
Jun 22, 1987
filing date -
Jun 22, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A D.C. solenoid control circuit for use in mechanisms driven by an A.C. motor. A rectifier converts A.C. current to D.C. current and provides an A.C. current flow path and a D.C. current flow path. Only the motor is connected in the A.C. current flow path to an output electrical power source. The D.C. solenoid is connected through the rectifier in the D.C. current flow path. The D.C. solenoid winding drives an actuator within the solenoid the activate the separate mechanism. In-rush current drawn by the motor upon start-up is converted to a high current level by the rectifier and input to the winding of the solenoid causing its immediate energization and, upon de-activation, its fast release.
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