Figure 213. Third and fourth voltage amplifiers, simplified schematic diagram,

TM 11-6660-204-25

Figure 213. Third and fourth voltage amplifiers, simplified schematic diagram,

Figure 214. Line-compensating feedback and fifth voltage amplifier,

simplified schematic diagram.

b. The signal from the plate of first amplifier

amplified and appears across plate-load resistor

tube V308A is fed through coupling capacitor

R341. Self-bias is provided by cathode resistor

C319 to grid resistor R339 and the grid of second

R340, which is unbypassed to obtain negative

amplifier tube V308B (fig. 212). The signal is

feedback. The plate voltage of tubes V308A and