Simple FM Transmitter


Posted on Feb 4, 2014

Frequency range is 100-108 MHz. The circuit is only mono circuit, and accepts an audio input from either a microphone or other source. The input impedance is 1Mohm. The input sensitivity is 5mV and the max input signal is 10mV. The transmitted signal can be picked up on a FM radio. The circuit can be used for short-range transmission, eg. for wir


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

eless microphones. The power supply to use is 9-14 V DC, one of the little rectangular 9V batteries is fine. Connect this to the + and - points on the PCB. The sound input goes to the points marked "MIKE". The antenna should be connected to the point marked "ANT". The emitter`s output impedance is 50 ohms. You can make your own fancy antenna if you like.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Vehicle alarm
Advanced Volume control
Efficient-negative-voltage-regulator
Six LED Stereo VU Display
flyback inverter for fluorescent lamp 15
control circuit for nokia tv tuner 5827
hit the number
Variable PIN Attenuator
RF Tester
Mini IR Theremin Circuit
Infrared control dimming circuit
Third harmonic excitation device automatic circuit a thyristor
Time relay three-start circuit



Top