Relay IR (infrared) Sensor Circuit infrared Transceiver (tested)

IR Sensor transmitter and receiver circuit consists of 2 parts as 250Hz 38kHz oscillator signal with the transmitter produces solid CD4093 receiver with IR LEDs on the receiver transmits a simple relay circuit works can be found in all parts market

There are 25 meters sensing distance listesiv supply voltage of 12 volts DC supplies a detailed explanation (in English) have also been made with the transmitter integrated circuit NE555 is in a state.

Door-Minder-

Receiver circuit diagram

The transmitter circuit diagram CD4093

The transmitter circuit diagram NE555

Door Minder circuit alternative links