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Old 8th Sep 2017, 9:52 pm   #1
martiR2R
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Default Unilab variable power supply

These are 28 years old, not sure if that counts as vintage!

Recently aquired 3 of these (ex schools chemistry lab) but have found next to nothing on the web. They seem very basic, big lump of a transformer, a mini "variac" and half a dozen components.

Could the "variac" be used on its own, within it's limit 0-220V @ 1.4A ?

Any info or suggestions gratefully received.

Thanks

Martin
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Old 9th Sep 2017, 9:02 am   #2
Radio Wrangler
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Default Re: Unilab variable power supply

It's a mains voltage variac, and it was used to adjust the mains voltage into the big fixed ratio transformer, so it could be used on its own. The output won't be isolated from the incoming mains, of course, it's a variable autotransformer.

David
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Old 9th Sep 2017, 10:40 am   #3
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Default Re: Unilab variable power supply

Sounds like an eminently useful find and with one-into-two potential- the variac with a good rating to cover most vintage radios (if not thirstier things like TVs) already in a safe metal enclosure, and a transformer with the capability to become the heart of a 0-20V 5A bench supply. Nice one.
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Old 10th Sep 2017, 6:38 pm   #4
martiR2R
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Default Re: Unilab variable power supply

Thanks chaps, much obliged.

Martin
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