Method for system for driving a solenoid
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United States of America Patent
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-
Jun 11, 2002
Grant Date -
N/A
app pub date -
Jul 10, 1999
filing date -
Jul 10, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system and method for a pulse width modulated (PWM) solenoid driver with a reduced rate of power consumption. The system for driving a solenoid includes a solenoid, a current set-point for establishing a desired current flow through the solenoid, and a step-down regulator circuit for controlling the current through the solenoid based on the difference between the desired current flow and the actual current flow through the solenoid. The step-down regulator circuit has a low internal resistance of not greater than approximately 1 ohm which contributes to the reduced rate of power consumption for the PWM solenoid driver.
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