FIGURE 4 shows an amplifier circuit. Write a short report on the operation and performance of the circuit. In completing the report you should:
- Explain the operation of the circuit and in particular the role of resistors R1 and R2.
- Build the circuit in PSpice and use it to determine:
(i) the quiescent value of Vout
(ii) the voltage gain for a 100 mV, 1 kHz , input signal
- Sketch the small-signal equivalent circuit of the amplifier and use it to estimate the voltage gain. Compare your answer with that of (ii) above.
- Attempt to calculate the quiescent value of Vout. Compare your answer with that given by the PSpice model. Try to explain any discrepancies.
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