Basic Simple Radio Circuit Diagram
Here is the circuit diagram of the simplest fm transmitter using a transistor.
Basic simple radio circuit diagram. Transistor q1 does the job of demodulation. Home made radio circuits or crystal radio circuits which is very interesting project of electronics. This is a very basic low cost hobby purpose circuit. The 80 turns coil and 365pf variable capacitor form a tank circuit which receives the signal through the antenna and then the signal is detected by oa91 diode and amplified.
The antenna coil collects the mw signals present in the air. Simple radio circuit op amp is the short form for operation amplifier. Perhaps this is one of the simplest and smallest fm radio receiver that can receive the fm stations available locally. The demodulated signal will be available at the base of q1 this audio signal is coupled to the base of q2 for further amplification.
The circuit functioning is pretty basic. Building a crystal radio circuit is not very difficult and require a very little electronics or technical knowledge you can make it with 2 to 4 components in a very short time. The output of the receiver drives a head phone. This is a very simple am radio circuit using only two transistors.
When it comes to making an fm receiver it s always thought to be a complex design however the one transistor simple fm receiver circuit explained here simply shows that it isn t the case after all. Here a single transistor acts as a receiver demodulator amplifier to constitute a wonderful tiny fm radio. The schematic shown below is a simple am receiver circuit uses only one transistor and some other components. The circuit works off a small 4 5 volt battery or two 3 6 volt lithium button cells.
It is a device used to amplify voltage. Its simple design makes it ideal for a pocket sized fm receiver.