Simple Fm Transmitter Circuit. The first stage is the preamplifier stage where an audio input signal is amplified before modulation. Fm transmitter circuit principle.
Here we ll discuss how to build small fm transmitter circuits using 10 different methods one that consists of wire link from the transmitter to the receiver and the other which is completely wireless and can be used to eavesdrop a particular conversation. Its maximum range is 3 km. This is how this simple fm transmitter circuit looks on breadboard the audio output signal from the microphone is usually small the first transistor thus performs the job of amplifying that signal to a level good enough for transmission.
The schematic of fm transmitter is given below.
This stage is served by q1 bc108. Here we have adapted the same formula by first amplifying the audio signal generating a carrier signal using an oscillating and then modulating the carrier signal with the amplified audio signal. The schematic of fm transmitter is given below. You need the following components for this experiment.
