System and method for speed control and stall protection combination for electric motors such as in engine cooling applications
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United States of America Patent
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Feb 3, 2009
Grant Date -
Nov 18, 2004
app pub date -
Jul 25, 2003
filing date -
May 13, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
is constructed and arranged to receive 1) the signal from the speed sensing circuit and 2) a control signal input for operating the at least one relay to control operation of the motor. When a stall condition is determined based on the signal from the speed sensing circuit, the motor control and protection circuit is constructed and arranged to control the at least one relay to disconnect power to the motor.
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