[Milsurplus] 28 volt transformer question ?

[Hubert Miller]

I had this AM-FM broadcast receiver, with step tuning, and the logic developed a problem.
As you know, these are impractical to repair, with this kind of problem, uneconomical.
Well, in my city, there is very limited collection of ewaste, and an irrational I think, regulation
of categories. So instead of tossing the whole thing in the garbage, I disassembled it, tossed
the cabinet and chassis in the recycle, and the circuit boards in the regular garbage.
I found that the power transformer is 28-0-28 volts and looks good for a steady 5+ amp. What
I'm wondering, should I keep this for a dynamotor spinnner, for dynos like the command sets
or RU-GF class? With a filter cap, the output should stay "near" 28 volts under load. You just
don't want to have such PS charged up to peak and then connect it to the load, which might
be hard on tubes. Or what if I just used it without filter cap, to spin a dynamotor? Or instead,
go ahead with a multiple thousands mFd filter cap and maybe a small series resistance to
adjust voltage under load?
Many years ago I used such a brute force supply I bought from Fair Radio to power an ARR-15
receiver. At that time, I didn't even think to worry about the exact output voltage.
So what about this transformer? 24 volts would be preferable but the price on this one was
right.
-Hue Miller
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