Figure 4 eh.11. A tube has its cathode connected to ground. The grid of the tube connects to ground through a resistor labeled 10 meg ohms. There are a pair of terminals on the left labeled input. The lower one connects to ground and the upper one connects through a capacitor to the grid of the tube. The plate of the tube connects through a resistor labeled Rb to a point labeled E b b. The plate also connects through a capacitor labeled Cc to the upper output terminal. This terminal connects through a resistor labeled Rcf to ground. The lower output terminal is grounded. End of verbal description.
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