Tuesday, 8 March 2011

Single transistor FM transmitter


This is oscillator using a crystal. This oscillator makes the wave 5 times of the crystal. 19.2*5=96MHz. And the frequency is modulated by the audio signal came from the base of the transistor.Do not joint the antenna wire for this transmitter! The frequency of this transmitter is stable than self oscillator. But it is not so stable as a normal crystal oscillator. The antenna wire changes the frequency.

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