FM Transmitter circuit

Posted on Feb 6, 2014

I wanted to use a 3. 5` jack instead of a microphone, I would need to change something else in the circuit. What would be changed in order to use an audio jack instead of a electret microphone to transmit One like this: taken from an old radio. It has 7 pins, four small knobs on one side, and a bigger one on the other side.

FM Transmitter circuit
Click here to download the full size of the above Circuit.

It does not have any model number. One more thing, I hope it doesn`t bother you: Where in the circuit could I add a white LED so I know the battery isn`t dead I think it`s 3V, but maybe it`s more, since it doesn`t look very bright on a cell battery.

Leave Comment

characters left:

New Circuits



Popular Circuits

1,5V Earphones Audio Amplifier
Power Mosfet Inverter
Unijunction metronome
Video amplifier and video detector
Mixer Diplexer
chip programmer
Electronic Multimeters
LM12 audio amplifier circuit diagram electronic project
Prototyping of White LED Drivers
Stereo Tube Amplifier
Controlling a relay with a digital logic level circuit
XTR112 114 thermocouple measuring circuit diagram of a loop
ETl3X220 FM FSK 27 MHz transmitter