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the output of this circuit is around 2kHz but i need it to be much faster as fast as i can, have any one got a circuit that has a square wave output that is over 2kHz
put a smaller value for the 100K resitor, like 10K and a smaller value for the 0.1u cap, maybe 0.01. that will give you moer frequency.
with the 555 you can make frequencies up to 500KHz
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