MP3 FM Transmitter Circuit Diagram
Here's a simple VHF FM transmitter that could be used to play audio files from an MP3 player or computer on a standard VHF FM radio. The circuit use no coils that have to be wound. This FM transmitter can be used to listen to your own music throughout your home. When this FM transmitter used in the car, there is no need for a separate input to the car stereo to play back the music files from your MP3 player. Project image : USB FM transmitter To keep the circuit simple as well as compact, it was decided to use a chip made by Maxim Integrated Products, the MAX2606 [1]. This IC from the MAX2605 - MAX2609 series has been specifically designed for low-noise RF applications with a fixed frequency. The VCO ( Voltage Controlled Oscillator ) in this IC uses a Colpitts oscillator circuit . The variable-capacitance (varicap) diode and feedback capacitors for the tuning have also been integrated on this chip, so that you only need an external inductor to fix the central oscillator freque...