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IR Transmitter and Receiver Circuit Diagram
https://circuitdigest.com/electronic-circuits/ir-transmitter-and-receiver-circuit
IR Transmitter Circuit Diagram. We are using TSOP1738 as IR receiver, so we need to generate the modulated IR of 38 kHz. You can use any TSOP, but you need to generate IR of respective frequency as TSOP. So we are using 555 timer in Astable mode to oscillate the IR at 38KHz frequency. As we know oscillation frequency of 555 timer is decided by resistor R1, R2 …
Infrared IR Transmitter and Receiver Circuit
https://circuits-diy.com/infrared-ir-transmitter-and-receiver-circuit/
An IR transmitter and receiver pair forms a simple circuit. This project explains the principle of IR communication. The 555 Timer IC operates in an astable mode. It generates the continuous pulses of the frequency. As the switch is pressed, the connection between an IR LED and the 555 timer IC closes. Then the IR LED emits the light of some frequency.
IR Music Transmitter and Reciever Circuit Diagram
http://www.learningelectronics.net/circuits/ir-music-transmitter-and-reciever.html
The circuit can be divided into two parts: IR music transmitter and receiver. The IR music transmitter works off a 9V battery, while the IR music receiver works off regulated 9V to 12V. First diagram shows the circuit of the IR music transmitter. It uses popular melody generator IC UM66 (IC1) that can continuously generate musical tones. Transmitter circuit diagram:
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