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Reply-To: "Fred Bartoli"
From: "Fred Bartoli"
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Subject: Re: Amplifying stage with *negative* Voltage gain??
Date: Sat, 7 Dec 2002 21:54:00 +0100
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NNTP-Posting-Date: 07 Dec 2002 21:52:30 MET
"Mike Monett" a écrit dans le message news:
> John Woodgate wrote:
> > What is very difficult to understand is that, AIUI, you measure 8 V
> > input with the probe on X1 setting but only 2.2 V out. If the probe has
> > 100 pF capacitance, that suggests that your output coupling capacitor is
> > about 30 pF.
> > But then you measure 8 V in with the probe on X1 but 2.2 V with it on
> > X10. That seems utterly inexplicable.
> > Regards, John Woodgate
> From what I understand, he has a 20 MHz scope with a 60 MHz probe. This is
> fine for 3.57Mhz, but maybe he is just getting used to interpreting the
> We should find out more if he reports the waveforms have no distortion
> the ones in the simulation I just posted. On the other hand, I wonder if
> MHz scopes have a low bandwidth switch:)
Yes, it's called GND.
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