Vintage Asylum

RE: Good Point

209.240.206.78

In Reply to: RE: If all diodes emit light... posted by Al Nico on March 23, 2008 at 11:27:35

The plate of the 5886, a subminiature electrometer tube, is notably sensitive to light. It's usually painted black for its applications. I tested a batch of these running a typical plate voltage of 6 volts @ 6 µA (not a typo!) and plate current could be modulated by passing a hand between the tube and a light source. I wonder if a small signal diode like 6AL5 would be similarly affected.

Follow Ups:

RE: Good Point - unclestu52 21:56:45 03/23/08 (2)
- Explain to a total idiot, please... - Muzikmike 07:31:05 03/24/08 (0)
- RE: Good Point - Barry B. 23:38:43 03/23/08 (0)

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