"Jim Wilkins" wrote in message ...
"PrecisionmachinisT" wrote in message
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wrote in message
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in college I learned how to design with vacuum tubes.

Identify the value of component Rk in the following item:
http://www.ebay.com/itm/RCA-TUBE-AMP...-/150984104264

Rk = Vg/Ip


Only if you want zero clipping...

In the movie "The Red Tent" the stranded aviators substituted pencil
lead for a broken one in their radio.

What is the value of the one in the amplifier pictured above ?