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IR Based Wireless Audio Transmitter and Receiver : 6 …
https://www.instructables.com/IR-Based-Wireless-Audio-Transmitter-and-Receiver/
The working of the Transmitter circuit is pretty simple, the IR light from the IR LED acts as a carrier signal and the intensity of the IR light acts as a modulating signal. So if we power the IR led through an Audio source the battery will illuminate the IR led and the intensity with which it glows will be based on the audio signal.
10 Simple FM Transmitter Circuits Explained - …
https://www.homemade-circuits.com/spy-bug-circuits/
For the wireless spy transmitter circuit everything becomes pretty simple and you just have to hide the transmitter circuit in some suitable place, like under the table, couch, sofa etc. Parts List R1 = 10K, R2 = 10k, R3, R4 = 27K, R5 = 1.5 M, C1 = 104, C2 = 220uF/25V, T1 = 188, T2 = 187, MIC = electret mic, IC1 = 741,Power = 9 volt battery
Simple Wireless Headphone Circuit - Making Easy Circuits
https://makingcircuits.com/blog/simple-wireless-headphone-circuit/
The simplest of these options is incorporating IR or infrared light through which the audio signal to be transmitted is modulated and processed accordingly, while on the receiver side the signal is again demodulated and amplified appropriately for the achieving a successful wireless audio transfer.
Wireless Audio Transmitter and Receiver …
https://www.youtube.com/watch?v=ws5J2lEzI3o
Friends in this video I will show you Wireless Audio Transmitter and Receiver Circuit...Transmit Audio Wirelessly By Light..Simple Circuit..Friends it is a v...
Simple IR audio link - Electronic Circuits and Diagrams ...
https://www.circuitstoday.com/simple-ir-audio-link
Here is a simple IR audio link that can be used to transmit audio signals up to 4 meters. The signal to be transmitted is applied to the base of Q1 via resistor R4.The transistor Q1 drives the IR transmitting diodes D1 and D2.The audio input will be modulated to the IR signals transmitted. The transmitted IR signals will be picked by the photo transistor Q2.The emitter voltage of the …
Simple Two Transistors AM Transmitter Circuit
https://www.eleccircuit.com/simple-two-transistors-am-transmitter-circuit/
This simple AM transmitter circuit include of many parts. There is a transistor Q1 act as increase the audio signal (AF) from the crystal microphone and a resistors-R3 that limit amplitude of sound signal is increased by Q1. The transistor – Q2 generate a radio frequencies (RF) in form of the colpitts oscillator circuit.
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