Article View: sci.electronics
Article #3513Re: Inductance Measurement (Big V)
From: John Berryhill
Date: Thu, 26 Oct 1989 14:59
Date: Thu, 26 Oct 1989 14:59
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In article <0ZFW62y00XcRM3bGAl@andrew.cmu.edu> jk3k+@andrew.cmu.edu (Joe Keane) writes: >Then look at the voltages across both on a scope, making sure you don't >ground something that isn't. Given the ratio and phase angle between >the two voltages, you can figure out both the inductance and resistance >of your inductor at the given voltage and frequency. I assume of course >that the capacitance is negligible. Why make it tough on yourself (and risk damaging the scope with big AC)? If you have an AC voltmeter and ammeter, just measure V and I to get the magnitude of the impedance Z. Calculate L from |Z|^2= R^2 + w^2 L^2 where w=2(pi) 60 Hz -- John Berryhill "Tasty Snacks in Cellophane Packs" 143 King William, Newark DE 19711
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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!udel!berryh From: berryh@udel.edu (John Berryhill) Newsgroups: sci.electronics Subject: Re: Inductance Measurement (Big V) Message-ID: <2621@nigel.udel.EDU> Date: 26 Oct 89 14:59:06 GMT References: <9450@pyr.gatech.EDU> <0ZFW62y00XcRM3bGAl@andrew.cmu.edu> Sender: usenet@udel.EDU Reply-To: berryh@udel.edu (John Berryhill) Distribution: usa Organization: University of Delaware Lines: 18