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Another VARIAC!

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
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Jan 21, 2010
25,510
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Here's something else that has turned up.

PXL_20210612_053509432_compress46.jpg

A baby VARIAC with an interesting control mechanism.

PXL_20210612_053521707_compress71.jpg

Looks like 60 to 85V 50/60 Hz 1.5A

PXL_20210612_053546882_compress73.jpg

The knob pushes/pulls the slider using a metal tape.

PXL_20210612_053607088_compress94.jpg

There's 2 brushes, which is a bit odd. And that's where the problems is:

PXL_20210612_053635283_compress10.jpg

One of these brushes is not like the other!

The brush looks like it's soldered in place. The Silver material is soft and easily scratched with a screwdriver.

And there's something else that's odd:

PXL_20210612_055533110_compress85.jpg

There are heaps of internal turns. Not what I'm expecting from an autotransformer.

Happy to hear any suggestions for fixing the brush, or comments on this odd device.
 

(*steve*)

¡sǝpodᴉʇuɐ ǝɥʇ ɹɐǝɥd
Moderator
Jan 21, 2010
25,510
Joined
Jan 21, 2010
Messages
25,510
Interestingly enough, I have found a site that sells very similar brushes. But more importantly, they also offer to "re-tip" existing brushes. This may be extremely useful because my brushes are similar, but not the same.

http://www.carbonbrush.com/variacbrush.htm (see VB-1 brushes)
 
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