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Passive Infrared Detector for alarm system using BIS0001

Published on Dec 13 2010 // Infrared Sensor Cirucits


In the circuit shown above, R3 is a light dependent resistor which has low resistance under strong ambient light. This causes the detector to be operational only when the detection area is sufficiently dark.

The IC BIS0001 is a PIR Motion Detector IC, which is one of the valuable IC in group of PIR sensors. The Pin diagram of BIS0001 is shown below: