Simple Am Transmitter And Receiver Circuit Diagram
It is similar in principle to the zn414 radio ic which is now no longer available.
Simple am transmitter and receiver circuit diagram. Used in audio communications to. This circuit is designed with limited power output to match the fcc regulations and still produces enough amplitude modulation of voice in the medium wave band to satisfy your personal needs. In figure 1 there are three radio stations each broadcasting at a different wavelength each station is broadcasting a radio signal consisting of a carrier wave and an audio signal. The design is simple and sensitivity and selectivity of the receiver are good.
The circuit is quite simple and easy to build since it applies only a few electronic mini mw transmitter. Now you can listen the sound from speaker. Radio receiver working principle. 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 schematic shown below is a simple am receiver circuit uses only one transistor and some other components. Here the short wave am transmitter circuit design diagram. Simple ir audio link circuit applications. Apply the audio signal at transmitter section using a mobile phone or a music player.
Make sure that distance between transmitter and receiver sections is below 30cm. All general purpose transistors should work in this circuit i used three bc109c transistors in my prototype the tuned circuit is designed for medium wave. Disconnect the batteries from transmitter and receiver. Here is the circuit diagram of a simple am transmitter circuit that can transmit your audio to your backyard.
Station 1 is broadcasting at am 920 station 2 at am 1460 and station 3 at am 1040.