transistor fm receiver circuit schematic

The signal strength of audio inputs into the transmitter is usually low therefore an amplifier is usually built to bring the signal level up. Typical FM transmitter design’s usually follow the block diagram below

I take no holdings for any mishaps.Ī FM transmitter is a device that uses the principles of frequency modulation to broadcast sound supplied at its input. It is thus important to keep the FM transmitter at a low range and ensure it must be built within the frame of the laws of your country and does not cause a nuisance to the public. So I finally found strength to build it few days back and in today’s tutorial, will be sharing how you can build your own FM transmitter circuit and believe me it works perfectly.Īt this point it is important to state that, this is being done only for experimental and learning purposes as the laws of certain countries prohibits unauthorized broadcasting. So during the ideation session to implement this Raspberry pi surveillance system, this FM transmitter idea came back to me, and while it won’t allow me to listen remotely (a distance beyond 10km), it will at least allow me keep an “ear” on things when around the house, and after building it I would have achieved some of the goals the younger me had. So recently, while going over one of my home automation/security projects using the Raspberry Pi and the motion library, I felt it will be cool to add sound to the project and listen live, so asides from the video feedback being supplied by the Pi, I can also get audio feedback from the area being monitored. I have always been fascinated by some of the applications of the transmitter especially when I was younger and like everyone else spent most of my time imagining how cool it will be to have some of the equipment and devices used in spy movies.

One of the cool projects I always wanted to build is an FM transmitter with a good range.

Transistor fm receiver circuit schematic