FM TRANSMITTER

                                    FM TRANSMITTER

We using two number 2N2222  NPN transistor its transition frequency 300 MHz it enough to transmit FM Wave and processes the Audio signals.

Above show circuit diagram resistor R2,R3 are biasing resistor capacitor C1 act as the filter C2 capacitor works on coupling both circuit.


Transistor works on Pre-amplifier  it amplify the audio signal  2n2222 it gives the best performance high frequency applications.



carrier frequency are generated LC tank circuit it has combination of  22nF & 100nH

calculate the resonant frequency came = (F)=1/2ㄫx√LC.

Transistor Q1 works like the merge the  audio signal and carrier signal.

PCB layout are shown on bellow it is single layer design.