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SOURCE
DEVICE
LOAD
COMMON
CONNECTION
Ν
v
/ Ν
y
f
INPUT CIRCUIT OUTPUT CIRCUIT
Fig. 11.1 Triodes, like many other devices and complete units for such purposes as
amplification, have an input and an output, as shown here in general
The substance of these first two sections can be shown quite
simply as Fig. 11.1. Later on, when we see the importance of the
impedances between the four pairs of terminals, we shall have to
elaborate this diagram somewhat.
11.3 Feeds and Signals
In the meantime there are a few practical details and terms that need
to be made clear before we go on.
You have gathered, no doubt, that any triode (and the same is tru ...