Dave Tweed wrote:
> Start with an ohmmeter to figure out which leads go with which windings.

Done.  I've attached a photo of the inductor with the pins labelled.
The windings connect to opposing pins -- 1 to 10, 2 to 9, 3 to 8, etc.

I'm wondering if there is a standard for this....???


> Then, feed an asymmetric signal (such as a sawtooth wave from a signal
> generator) into one winding, using a resistor if necessary to limit the
> current. Use a dual-channel oscilloscope to compare the "primary" voltage
> (even though you might not be driving the actual primary at this point)
> with the voltages and polarities of the other windings. Match this data up
> with what you know about the winding ratios.
>
> If you don't have an oscilloscope, then you need to play around with
> connecting windings in series in various combinations to see whether they
> add or cancel each other, using an AC voltmeter. Much more tedious.


This is where the problems start -- being out of town, I've got
limited tools.  Basic DMM, etc.  Oscilloscope is in storage back
in Texas. :-(

Resistance tests won't tell me much as on the lowest range (200ohms),
the DMM reading bounces around enough to pretty much indicate the
same thing for all coils... garbage.

First I need to get an oscillator, and with Radio Shock as my primary
source of parts, it's going to be 555 based.  I'll be back...


Thanks,
-Neil.

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