Re: opposing voltage sources


"Allan Adler" <ara@xxxxxxxxxxxxxxxxxxxx> wrote in message
news:y93fxwgne2y.fsf@xxxxxxxxxxxxxxxxxxxxxxx
I've been looking at Keithley application notes for the Franck-Hertz
experiment. Some of them show voltage sources that seem to be opposing
each other. I don't know much about stuff like that, but I'm under the
impression that one doesn't really want to have voltage sources opposing
each other (i.e. with opposite polarities) in a circuit. Can someone
please address that point?

A wild guess ... to cancel common mode signals?


.

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