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Old 11th March 2008, 12:00 AM   #11
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Join Date: Jul 2006
NEXT question...! In attempting to determine the secondary voltages of a more-or-less unknown transformer (Identities of the filament windings, etc, are known; voltages aren't), I measured ~725VAC unloaded across the HV secondary.

Buuuut that's unloaded volts. What's the likely actual secondary voltage of this little guy?

(thanks for all the help up until now, by the way)
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Old 11th March 2008, 12:25 AM   #12
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Join Date: Jun 2002
Location: Macedon NY
Measure the resistance of the windings, plug into PSU Designer, and you'll know. If you don't have the program, download from
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Old 11th March 2008, 12:48 AM   #13
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oh, cool! Shoulda done that before I left the house. Fooey!

Thanks again!
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Old 11th March 2008, 05:35 AM   #14
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Arright - tinkering anew this evening, I've decided that this is probably a 720VCT brick - probably overkill and a half for the little Aikido linestage that I'm in the process of putting together (from a kit - I don't have that much faith in my own ability yet )

This thread is straying further and further off topic - I should probably start a new one - but does anyone have a quick link or pointer on how to get a ~300VDC B+ voltage out of this guy? I've been playing around with PSUD II, but I'm not sure what kind of load the Aikido imposes, and dropping necessary volts across a resistor obviously makes the final B+ voltage sensitive to loading.

Is this one of those "put it together and play with the values" situations? I don't want to blow anything up.
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