Two transistor impedance buffer with gain. The input terminal goes through a 0.1 mike cap to the base of Q1, a 2N3904. The base also goes through a 750 k ohm resistor to plus 9 volts. The base also goes through a 1.6 meg ohm resistor to ground. The emitter of Q1 goes through a resistor R4, see table, then to the plus side of a capacitor, C2, see table. The negative side is grounded. The emitter also goes through a 5.1 k ohm resistor to the collector of Q2, 2N3906. The collector of Q1 goes through a 15 k ohm res to plus 9 volts. The collector of Q1 also goes directly to the base of Q2. The emitter of Q2 goes to plus 9 volts. The collector goes to one end of a 5.1 k ohm resistor mentioned earlier. The collector also goes through a 2.2 k ohm res to ground. The collector of Q2 also goes to the plus side of a 10 mike cap. The negative end goes to the output. End verbal description.
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