Today we are controlling many appliances with the help of remote like AC, TV or music system. It often happen that remote stops working due to any reason (low battery or any button of remote becomes faulty). Therefore here is the remote tester circuit to test your remote to identify that appliance (TV, AC etc) has problem or your remote is not responding. Advantage of circuit-
1. Based on single sensor.
2. Circuit consumes very less power.
3. Almost every remote can be tested with the help of this circuit as operating frequency of sensor is 38 KHz.
4. High immunity against ambient light.
5. With little modification in the circuit you can use it to control your home appliances with remote.