Question

In a two-story voltage amplifier circuit, there is PNP on the first floor and NPN on the second floor. A total of 10 resistors and a total of 5 capacitors were used in the circuit, 5 resistors per floor. Re resistance of PNP transistor is 63.31 Ω and re resistance of NPN transistor is 15.25 Ω. The input impedance of the first floor is 212.36 Ω and the input impedance of the second floor is 9.1 K Ω. There is a voltage divider circuit at the entrance of both floors in the circuit. Thevenin equivalent voltage of the voltage divider circuit for the first floor is -1.5 V, and Thevenin equivalent voltage of the voltage divider circuit for the second floor is -5.43 V. The voltage gain of the first floor is Av1 = - 6.41. The two-layer voltage amplifier circuit can transfer a signal of up to Vi = 50 mV to the output without clipping. Design the circuit that provides the above specifications so that the supply voltage of the circuit is ± 15 V. (β = 200, VT = 26 mV, | VBE |=0.7.)

Answer 1