Pll Fm Transmitter Circuit. This circuit uses the familiar 2sc1971 for final power amplifier stage. Here s pll fm transmitter circuit from china.
The simplest is an electronic circuit consisting of a variable frequency oscillator and a phase detector in a feedback loop the oscillator generates a periodic signal and the phase detector compares the. At the time i had no idea of where i m supposed to buy the parts so i recycled mine out of junk. This fm modulator can be operated between 76 to 108mhz.
The main impracticality of using an fm transmitter can be counteracted by using this phase locked loop subsystem.
Fm transmitters remind me of my early years in electronics. The heart of this unit is a pic processor called pic16f870 a 2 x 16 char display and four buttons. The simplest is an electronic circuit consisting of a variable frequency oscillator and a phase detector in a feedback loop the oscillator generates a periodic signal and the phase detector compares the. The vco covers only a few mhz without readjustment.
