Zach, try AC voltage, Good Luck, Steve
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At 05:44 PM 5/18/01 -0700, you wrote:
Greetings all, I won a small box of assorted electronic components on
eBay, which arrived today. I'm still trying to evaluate + test all of
them, but I have a question regarding transformers. The box came with
many small transformers, 2 different kinds -- the smaller kind has 5
leads (3 on one side, 2 on the other) and the larger ones have 11
leads (6 and 5).
I'm trying to determine the turns ratio of both models. Unfortunately
I'm not having any luck... What I'm doing is setting a variable DC
power supply to either 6 or 3 volts, and connecting that to 2 wires
on one side of the transformer. On the other side I'm attaching a
5-watt, 100-ohm resistor to a couple leads. (The leads are being
chosen semi-randomly...)
Then I'm measuring the DC voltage on both sides. The primary side
(er, the side with the power supply connected to it... This is
another unknown, I'm not sure which side steps the voltage up, and
which steps down?..) responds okay, it measures the DC input, minus a
few volts.
The other side, however, always registers as dead, I'm not measuring
any voltage across the resistor at all.
Any ideas? The small transformer got warm, which at least indicates
that it's doing something, but the large one stays cool...
-- Z
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