RE: measuring value of width coils

If your DMM has LCR capabilities then it's a no-brainer. Chances are it
doesn't, unless you specifically bought it with that capability since most
DMMs won't have that feature.

You can measure the resistance of the wire-wound coil, but you are really
measuring a secondary characteristic of the inductor. In some cases that'll
be good enough, and in some cases it won't. For example, if the ferrite
core is cracked you'll have a bad inductor but the resistance measurement
will still look "good".

There are other tricks (for example, if you know the range of inductance you
are interested in you could build a suitable LC or LR circuit and measure
the resonant frequency of it), but that's getting into engineering instead
of just repair.

  _____

From: owner-rasterlist@vectorlist.org
[mailto:owner-rasterlist@vectorlist.org] On Behalf Of
electronicamuse@aol.com
Sent: Tuesday, July 01, 2008 11:22 AM
To: rasterlist@vectorlist.org
Subject: RASTER: measuring value of width coils

Can this be done with a DMM? I have some coils from various Electrohome
units and want to see if they'll work in GO7s.

Thanks

  _____

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Received on Tue Jul 1 11:34:51 2008