Triplett 850 VTVM

I'm becoming a big fan of Triplett meters. Their large-meter VTVM was the model 850. 

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Triplett model 850 VTVM

BAMA has a scan of the Triplett 850 Type 2 manual, but it's of poor quality. The Triplett web-site has a much better quality scan, but Jewell seems to randomly remove files from their site, so the link might rot.

Triplett also made a similar VOM, the model 800.

Unfortunately mine is missing one knob, the handle, and the probe. Anyone have an extra probe?

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Fred Scoles, an expert in the history of Triplett, tells me that the 850 was pretty much a copy of the RCA WV-98A Senior VoltOhmyst VTVM. (Simpson's model 312 is their version of the RCA WV-98A.) You can compare the schematics yourself:

Triplett 850 schematic

Triplett 850 schematic

RCA WV-98A schematic

Simpson 312 schematic


© Steve Byan 2011-2016