Figure 4.36. The high side of the input goes through C1 to the base of Q1. The other side of the input is grounded. The base of Q1 also goes through a 10 k ohm resistor to ground. The base also goes through a 27 k ohm resistor to plus 12 volts. The emitter of Q1 goes through a 2.2 k ohm resistor to ground. The emitter also goes through C3 to ground. The collector goes through a 3.6 k ohm res to plus 12 volts. The collector of Q1 goes through C2 to the base of Q2. The base of Q2 goes through a 3.3 k ohm res to ground. The base also goes through a 2.7 k ohm res to plus 12 volts. The collector of Q2 goes to plus 12 volts. The emitter of q2 goes through a 100 ohm resistor to ground. The emitter also goes through C4 to the top of a 75 ohm resistor. The other end is grounded. End verbal description.
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