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Re: Cap testing
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To: tesla-at-grendel.objinc-dot-com (Nikola Tesla aka Chip Atkinson)
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Subject: Re: Cap testing
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From: "SROYS" <SROYS-at-radiology.ab.umd.edu>
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Date: Fri, 27 Jan 1995 10:24:46 EDT
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>Received: from comm1.ab.umd.edu by csn-dot-net with SMTP id AA27333 (5.65c/IDA-1.4.4 for <tesla-at-grendel.objinc-dot-com>); Fri, 27 Jan 1995 08:28:17 -0700
If you were using current through the cap to drive X and voltage across
the cap to drive Y, wouldn't a "perfect" capacitor (i.e. - no inductance)
give a circular trace since current leads voltage by 90 degrees? Stray
inductance would change the phase and distort the circle into an oval
shape. Only at resonance (or with a pure resistance) would the trace be
a straight line.
Steven Roys (sroys-at-radiology.ab.umd.edu)