On Apr 24, 2004, at 10:45 AM, Steven Grant, W4IIV wrote:
Hi steve
the voltage shoud be 4.8 volts for maximum tube life. 5 volts or more
will cut tube life with very little benifit.
the reason AC is used has to do with biasing, 5 volts DC with this
tube will affect biasing (in many amps, 5 volts is what they use to
bias the tube to cut off)
Steve : 25v will typically bias a 3-500Z to cutoff. 5v is typical
operate bias.
...
Richard L. Measures, AG6K, 805.386.3734. www.somis.org
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