555 tracking transmitter

The schematic shown here is a circuit of a 555 tracking transmitter. 555 is a famous versatile IC used in many electronic projects. In the below mentioned circuit this IC is used to generate a tone which will be transmitted through the FM transmitter circuit which is built around the 2N2222 transistor. The circuit can be tuned between 103 to 108
555 tracking transmitter - schematic

MHz and will transmit at a distance of 100m. L1 is equal to 2 turns of #24 wire on 5mm form, and TR is equal to 1 to 30 pf trimmer capacitor. Antenna can be a 75cm wire, for full range keep the wire vertical, or you can also use small 6 or 12 inch wire as antenna but the range will become half or less. The circuit can be operated with 4. 5 volt batteries of any type.

Leave Comment

characters left:

New Circuits