Hi everyone,
I've built a simple peak detector circuit (image attached), and in addition to my main question, I have just a general theory question I was hoping someone could shed some light on: should the ground of the input, output, and that capacitor be the same as the power supply? Or should they be separate?
(This is just a general theory question, but out of interest: my input is a series of positive-only pulses, but they tend to dip a bit into the negative... not by much, but enough to exceed the negative threshold of the op-amp. That's why I have that high-pass stage, and I was HOPING that by separating the signal and power supply ground, I wouldn't need that stage anymore. Tried it, and didn't work, but it got me curious!)
I've built a simple peak detector circuit (image attached), and in addition to my main question, I have just a general theory question I was hoping someone could shed some light on: should the ground of the input, output, and that capacitor be the same as the power supply? Or should they be separate?
(This is just a general theory question, but out of interest: my input is a series of positive-only pulses, but they tend to dip a bit into the negative... not by much, but enough to exceed the negative threshold of the op-amp. That's why I have that high-pass stage, and I was HOPING that by separating the signal and power supply ground, I wouldn't need that stage anymore. Tried it, and didn't work, but it got me curious!)
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