Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!gem.mps.ohio-state.edu!sunybcs!kitty!larry
From: larry@kitty.UUCP (Larry Lippman)
Newsgroups: sci.electronics
Subject: Re: Inductance Measurement (Big V)
Summary: Need more information...
Message-ID: <3467@kitty.UUCP>
Date: 26 Oct 89 02:29:22 GMT
References: <9450@pyr.gatech.EDU>
Distribution: usa
Organization: Recognition Research Corp., Clarence, NY
Lines: 23

In article <9450@pyr.gatech.EDU>, is813cs@pyr.gatech.EDU (Cris Simpson) writes:
> 	We need a way to measure inductance at fairly high voltages, 
> around 120 volts.  Wayne Kerr sells an LCR analyzer that only goes 
> to 5 volts.  HP has one up to 38 volts.  Does anyone know of a box
> that can do 120?  Alternately, does anyone have experience with
> a home-brew system to do it?  We will be working in the milliHenry
> range.

	Are you referring to superimposed DC voltage, open-circuit AC
execitation voltage, a common mode voltage, or what?  Inductors don't
generally care about voltage, but they sure do care about *current*
(both AC and DC), however.  Also, other considerations in selecting an
inductance bridge are: (1) do you want to measure Q, (2) do you want
to measure R; and (3) at what *frequency* do you want to measure?

	I haven't seen any Wayne-Kerr apparatus in years.  Come to
think of it, I haven't seen any Freed Transformer Co. inductance
bridges in a good many years, either.

<> Larry Lippman @ Recognition Research Corp. - Uniquex Corp. - Viatran Corp.
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