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Chip Amps Amplifiers based on integrated circuits

DC coupling capacitor placement
DC coupling capacitor placement
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Old 11th October 2005, 07:00 PM   #1
Nordic is offline Nordic  South Africa
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Default DC coupling capacitor placement

I have been wondering about the DC coupling capacitor placement in the basic inverted gainclone circuit...

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what bothers me is the 56k resitor that connects between the input and this capacitor... doesnt this then still alow DC components in pin 7 (negative input) ?

Is there a way to decouple both inputs if this is the case?
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Old 11th October 2005, 07:25 PM   #2
jan.didden is offline jan.didden  Europe
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Well, in your diagram pin 7 is hardwired to ground. By definition, ground = zero volts (assuming the input signal cable return or screen also goes to ground). I don't see how there can be any DC into it??

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