The circuit is very effective to test the remote controls what still works or not, the remote record will be tested using infra red. Examples of the TV remote, AC and others. Please try I am sure 100% will be successful.
The workings of the circuit is very simple, when the infra red sensor receive infrared signals pin 2 sensor will produce a voltage, this voltage will drives the PNP transistor so that the LED lamp and piezo disc (BZ) is active. for the power supply you can use a 9 volt battery and then use IC 7805 or use 1.5 volt batteries x 3
Following the specification of components installed
- Transistor BC557
- TSOP 1738 Sensor Infra Red
- R1 = 10k ohm ¼ watt Resistor
- R2 = 1k ohm ¼ watt Resistor
- R3 = 1k ohm ¼ watt Resistor
- BZ = piezo disc
- Photodetector and preamplifier circuit in the same casing.
- Receives and amplifies the infrared signal without any external component.
- 5 V output (active at level 0).
- 38 kHz integrated oscillator.
- High sensitivity.
- High level of immunity to ambient light.
- Improved shielding against electrical field interference.
- TTL and CMOS compatibility.
- Applications: infrared remote control.
- Supply: 5 V
- Power consumption: 0.4 to 1.0 mA
- Min. Ee irradiation: 0.35 mW/m2 typ.
- Angle of detection: 90
- Dimensions of the casing (mm): 12.5 x 10 x Thickness 5.8
- Temperature range: -25 C to +85 C