Small signal model of a triode. An AC voltage source is labeled mu times v sub g k. This source is drawn vertically. The bottom end of the source is connected to common. The top of the source is connected to one end of a resistor labeled r sub p. the r is lower case. The other end of the resistor connects to a terminal connection. Below this terminal is another one which is connected to the common line. Connected between the two terminals are two resistors in parallel. They are labeled Rb and Rcf. This time the letter R is upper case. End verbal description.
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