红外线远程控制电路 Infa-Red Remote Cont

红外线远程控制电路 Infa-Red Remote Control

I have received a number of emails requesTIng schemaTIcs for infa-red remotes. So here is one. This remote transmits a tone using an infa-red LED. This tone is decoded by the receiver. Since the receiver only switches when it "hears" the tone, there are no accidental acTIvaTIons.

Schematic For Transmitter

Parts:

Notes:
1. To adjust the circuit, hold down S1 while pointing LED1 at the receiver. Adjust R6 until you hear the relay click.

2. You can increase range by using a high output LED for LED1.

3. Bright light will stop the receiver from responding to the transmitter.

电路图遥控红外线控制电路RedInfa

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