Re: IF Transformer Identification Help


From: Brad Mitchell (bmitchel@CBA.Kodak.COM)
Date: Mon Jan 10 1994 - 14:43:56 EST

It appears that there is no easy way to identify these. It seems to
be the consensus that the markings are from a supplier and with out
knowing who the supplier is, then its off to the test bench. I spent
a hour or so digging in data hand books before giving up. I went as
far as tearing one a part to see how its made. The wires are so small
and gunked up, it is near impossible to determine the winding ratios.
I will probably grab a hand full to through in my junk box while they
are still available, just in case I later decide to play with them on
the test bench.

Well, it seems to me, that if you had a real accurate ohm meter, and
the primary and secondary are using the same gauge wire, you might be able
to approximate the turns ratio that way. You would need a presision ohmeter
specifically for low ohmage measurments, like the kind used for tracking
inter-layer shorts on boards.

73 Brad WB8YGG

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