(a) Basic construction. The suppressor grid GS is often internally connected to the cathode.
(b) Anode (output) characteristics. Cathode current h is anode current L plus screen grid current /,..
(c) Equivalent circuit.
triode-like or pentode-like, it is this degree of
influence of output voltage variations upon the
output current which is referred to. So our
diversion into history has not been in vain, especi-
ally as we have met some useful concepts like
constant current generator ...
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