February 20th 09, 06:13 AM
posted to rec.radio.amateur.boatanchors
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First recorded activity by RadioBanter: Jul 2006
Posts: 268
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Transformer color code quandry
On Feb 18, 5:49*pm, K3HVG wrote:
I've been going through some transformers to see what to keep and what
to lighten the load, so to speak. *I found one that I can't quite figure
out. *The thing is about the size we'd see on a 60's TV set. *Nice piece
of iron and useful. The issue is this: *There are four sets of windings..
* The B+ set is easy, color and resistance are consistent with the
winding. *There are 3 other windings. *One is identifiable as the 5v
filament winding, another as the 6.3v winding, leaving what I believe is
the primary (blinding glimpse of the obvious?). *There are 3 wires left
over for (what I believe is the primary. *One black lead that pairs with
another dark color wire. *They ohm out as would a primary winding; that
is, low resistance but an obvious inductive reactance. *The bug is that
there's yet a third wire associated with this pair and the resistance is
several hundreds of ohms in relation to the other two. *Any ideas? *It
can't be a CT, of course, and its way too high resistance to be a 220v
tap. *Also, the wire size of the "primary" is #16 and this outrider is
maybe #18 or #20. *I didn't just fall off the turnip wagon but this is a
poser?
de Jeep/K3HVG
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