Infra-Red Remote Control Receiver

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Circuit Diagram


Parts list

Parts NameParts Symbol  Parts Description  Quantity
ResistorR1100K (1/4W)1
ResistorR21K (1/4W)1
ResistorR3100K (1/4W)1
PotentiometerPOT150K (Potentiometer)1
CapacitorC10.01uF (16V, Ceramic Disk)1
CapacitorC2100pF (16V, Ceramic Disk)1
CapacitorC30.047uF (16V, Ceramic Disk)1
CapacitorC40.1uF (16V, Ceramic Disk)1
CapacitorC53.3uF (16V, Electrolytic)1
CapacitorC61.5uF (16V, Electrolytic)1
TransistorQ1NPN Photo Transistor1
DiodeD11N914 (Silicon Diode)1
Integrated CircuitIC1LM308 (Op Amp IC)1
Integrated CircuitIC2LM567 (Tone Decoder)1
RelayRLY16V Relay1

Description

This is the schematics for infra-red remote control Receiver. This remote control receiver will be able to receive a transmitted tone from it's respective transmitter's infra-red LED. And this received tone will be decoded by the receiver. Since the receiver only switches when it "hears" the tone, there are no accidental activations.

Notes

  • 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.