Figure 6.20 Complementary Amplifier Without AC Feedback. In this diagram Vcc is at the top and ground is at the bottom. On the left are two input terminals. The bottom one is grounded and the top one is coupled to the base of Q1 by C1. Q1 is an N P N BJT. There are two resistors connected to the base of Q1. R1 is a 220 k ohm and connects to Vcc. R2 is also a 220 k ohm and connects to ground. The collector of Q1 connects through R3, 1 k ohm, to Vcc. The collector of Q1 also connects to the base of Q2, a P N P BJT. The emitter of Q2 goes to Vcc. The collector of Q2 goes through R5, 510 ohm then R6 another 510 ohm to ground. The junction of R5 and R6 connects through R4, 3.6 k ohm, to the emitter of Q1. The emitter of Q1 also goes to ground through capacitor C2. The collector of Q2 also is coupled to the output by capacitor C3. The other output terminal is grounded. End verbal description.
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