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Originally Posted by Esteban
4. Yes, I have low sensitivity with regulators, or in other words, at more low voltage works better. Hope 3 volts is better?
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I wonder if this has something to do with the 4066 bilateral switches. It seems that the propagation delay depends on the supply voltage. Since the 555 timer toggles these switches, there may be some critical timing path here that reduces sensitivity of the sample and hold circuit.