An RC Oscillator with Adjustable Duty Cycle
Jia Li · Journal of Liaoning University · 2009
In this paper,we analysis a RC oscillator to generate a certain frequency waveform.This circuit also has a duty cycle modulation circuit to increase the duration of the high voltage level.the oscillator eventually produce a fixed frequency of 750 Hz.this overcome the disadvantages of variable frequency with instable voltage and fixed duty cycle.