With this compact FM adaptor circuit plugged in to the audio out of your cassete player or i Pod out put, you can listen your favorite music in your car stereo. This circuit is extremely useful if your car stereo doesnot have an auxillary in socket.The circuit is nothing purchase an short range FM transimitter.
The FM transmitter circuit is Depending on low power NPN transistor 2N2222. The tank circuit consisting of L1 & C1 producess the necessary oscillations at the collector of Q1.The capacitance C4 , resistance R3 & R4 performs the function of mixing the stereo out put from one the audio player or i-Pod.The emitter resistance R2 offers sufficient stability in to the circuit. It as well limits the collector current to increse the battery life.
The FM transmitter circuit is Depending on low power NPN transistor 2N2222. The tank circuit consisting of L1 & C1 producess the necessary oscillations at the collector of Q1.The capacitance C4 , resistance R3 & R4 performs the function of mixing the stereo out put from one the audio player or i-Pod.The emitter resistance R2 offers sufficient stability in to the circuit. It as well limits the collector current to increse the battery life.
