Low voltage motion sensor for activating a high voltage load
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United States of America Patent
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Apr 11, 1989
Grant Date -
N/A
app pub date -
Jun 3, 1988
filing date -
Jun 3, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention utilizes a latching relay having on and off inputs for controlling power to a load. The on and off inputs of the relay are controlled by pulse generators which are in turn controlled by an occupancy sensor circuit. These pulse generators provide pulses when movement is initially detected in a room and when no movement has been detected for a predetermined time, respectively. The outputs of the pulse generators are coupled to an isolation circuit which isolates the power supply for the occupancy sensor from the pulses during each pulse to prevent damage to the power supply.
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