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|1st June 2002, 01:25 PM||#1|
Join Date: Jun 2001
Location: Madrid, Spain
Class of operation measuring
How to measure if an PP amp is working in class A?
The amp is cathode biased in Ultra-Linear mode.
Tubes are KT88, Rk = 390 ohm, Vak = 354V, Ia+g2 = 82 mA
and Vg = -32V
Raa is about 6k
On the other hand, i've no find plate curves for KT88 in UL mode.
I've used the plate curves for KT88 in triode mode instead for approximation.
Thanks in advance.
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