Schematics > Security and other sensors and detectors > Infrared Alarm
Infrared AlarmReciver:
Transmitter:
This circuits consist of
two parts, the first part will transmit a signal, and the second part will detect
that signal and trigger a relay.To adjust the circuit, hold down S1 while pointing
LED1 at the receiver. Adjust R6 until you hear the relay click. You can increase
range by using a high output LED for LED1. Bright light will stop the receiver from
responding to the transmitter.
You can use the designed PCBs to build the circuit simply:
Transmitter PCB Dimension = 25.5 x 16 mm
Receiver PCB Dimension = 50.5 x 31 mm
Title: Infrared Alarm
Source: unknown
Published on: 2005-08-27
Reads: 707
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