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Re: Tube Question



> Original Poster: "Ben McMillen" <sammac-at-cobweb-dot-net>
>
> My question is: what it is and what it might be used for?
>  It is made by Amperex and is marked 575A. Made in usa.

The tube you found is a Diode
Other equivalent numbers are 875A and VT187
It's used as a Half wave Mercury Rectifier
The filament requires 5 volts -at- 10 amps and is on pins 2 & 4
Pins 1 & 3 are not used, the filament acts as the cathode
The plate ratings are 15Kv -at- 1500mAPhil Rembold
prembold-at-gte-dot-net
TCBFW