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Da beast! Industrial variac from 1944!

Here's my variac. It's slightly larger than average as you can see LOL. The lamp (running at 50V here), which is a PS-35, gives the scale xD

One thing I noticed yesterday when I took it out of storage... Inside the enclosure there are two blueprints (REAL blueprints!), dated May 18, 1944, and their headers are titled "Federal dep't of defense". Would this be a military-grade variac? o_O

If so, no wonder it's still working 70 years later!

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Filename:102_1403.JPG
Album name:Vince / Miscellaneous
Keywords:Gear
Filesize:667 KiB
Date added:Mar 05, 2015
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DateTime Original:2015:03:05 14:38:40
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ISO:324
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URL:http://www.galleryoflights.org/mb/gallery/displayimage.php?pid=19000
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Comment 1 to 3 of 3
Page: 1

GEsoftwhite100watts   [Mar 06, 2015 at 02:04 AM]
GEsoftwhite100watts
Wonder if it's American or Canadian then? Cool! What's the max wattage? Also would this work on a modified sine wave inverter?

BULB FREAK   [Mar 06, 2015 at 09:18 AM]
BULB FREAK
yes a Variac would work on modified sine wave since all a Variac in essence is a Auto transformer (I had a Variac that ran on any thing from 46Hz to 400Hz Heh)

rjluna2   [Mar 06, 2015 at 12:26 PM]
rjluna2
So, it is just basically autotransformer circuit only?


Comment 1 to 3 of 3
Page: 1