Enhanced performance for DC motor drive switching
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United States of America Patent
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Feb 14, 2006
Grant Date -
Nov 25, 2004
app pub date -
Apr 15, 2004
filing date -
Apr 16, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved drive circuit is provided for a DC motor. The drive circuit includes: a DC power source; a relay having a normally open contact and a normally closed contact; a DC motor electrically connected through the normally open contact of the relay to the power source; and a discharge circuit connected in parallel to the DC motor. More specifically, the discharge circuit is coupled to the normally closed contact of the relay and operable to inhibit current flow from the DC motor until the relay has settled in a closed position.
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