Your variac appears to be missing it's carbon brush wiper, that helps prevents arcing and short circuits between the windings. It looks like the brush contact part number for your variac is 146-0121-S. hope that helps.
Indeed, that looks to be the case. Though since I snipped that piece of metal off of the wiper blade to make it make contact, that part will no longer fit. Also worth noting the cheapest I was able to find that brush part online was $80, and a whole replacement variac I found (used) for $110. So I'll probably just keep using it this way until it fails. Then I can do another youtube video on why brush contacts are important 😃
Your variac appears to be missing it's carbon brush wiper, that helps prevents arcing and short circuits between the windings.
It looks like the brush contact part number for your variac is 146-0121-S.
hope that helps.
Indeed, that looks to be the case. Though since I snipped that piece of metal off of the wiper blade to make it make contact, that part will no longer fit.
Also worth noting the cheapest I was able to find that brush part online was $80, and a whole replacement variac I found (used) for $110. So I'll probably just keep using it this way until it fails. Then I can do another youtube video on why brush contacts are important 😃
Man I wish I could effort one 😢