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Circuit explanation

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andy257

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Hi all,

Could anyone kindly explain what this circuit is doing in a bit of detail. I think I kind of get the basic idea of what its doing but there is some interesting feedback going on which I don't understand what its for.

To me it looks like an AC amplifier that is converted to a DC voltage output?

Thanks for your help

Andy
 

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MikeMl

Well-Known Member
Most Helpful Member
62.png

I cannot see that this thing does anything useful. It acts as a differentiator for down-going edges of the input. The minimum amplitude of the input to get an output is about 100mV.

What does ADJUST connect to?

I could make a much simpler differentiator, if that is what it is supposed to be?
 

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dr pepper

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I agree, C3 has a big effect on performance, and the circuit appears complex for what it does.
 

AnalogKid

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An external resistance from ADJUST to 0V changes the peak output voltage without changing (very much) the output impedance.

ak
 
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