Low-frequency-oscillator


Posted on Apr 28, 2012

This simple rc oscillator uses a medium-speed comparator with hysteresis and feedback through Rl and Cl as timing elements. The frequency of oscillation is, at least theoretically, independent from the power supply voltage.


Low-frequency-oscillator
Click here to download the full size of the above Circuit.

If the comparator swings to the supply rails, if the pull-up resistor is much smaller than the resistor Rh, and if the propagation delay is negligible compared to the rc time constant.




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