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Re: toroid transformer question
Original poster: Skip Malley <skip@xxxxxxxxxxxxxxx>
That sounds like an odd kind of transformer. Being a ferrite core,
it certainly not useful at 60Hz. The inductance measurements
indicate a 10:1 voltage ratio. The voltage ratio is the square root
of the inductance ratio. These certainly have no use for anything TC related.
For playing with them, I would use an audio generator and an audio
power amp to try to determine it's properties.
Skip
At 12:19 AM 2/4/2007, you wrote:
Original poster: Mike <megavolts61@xxxxxxxxx>
Hi all,
I have two small toroid transformers that I'd like to do
'something' with. The low voltage side measured 34 - 35 uH
(approx. as measured using a really crude home-made inductance
meter I put together from a kit haha), and the high voltage side
measured 3.33mH for each one. Now I 'presume' the primaries are
really meant to be 33uH, for a 100:1 ratio. I haven't measured
the wire guages, but the primaries appear to be approx. 18g and the
secondaries appear to be either 26 or 28g just looking at them
compared to some 24g I have. I don't remember the core dimensions
and thise are taped but they are approximately 2 1/4" OD, 1
1/8" ID, and about 1 " thick with the windings included.
So, the big question is, does anyone have a suggestion for
using them? I know from taking one apart back when I got them
some 5 years ago that the cores are ferrite and not banded steel
like a variac is wound on, so I imagine they can be operated at
much more than 60Hz. I may try experimenting with them driven via
a 555 timer/mosfet circuit in a manner similar to a car ignition
coil would be done. Has anyone used anything like this to drive a
small TC? Give me some ideas please. I just hate to have them
sitting around here doing nothing all this time. I don't know that
they'd be of any use for a TC, but any ideas would be much
appreciated. I got them cheap at a surplus store in Denver and
have carried them to Florida and back(to Colorado anyway) without
ever having done a thing with them...lol It's time to figure
something out, I think.
Thanks,
Mike
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