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There are available voltage amplificators with Avoc = 8 V/V, Rin = 1.8 kΩ, Ro =...

There are available voltage amplificators with Avoc = 8 V/V, Rin = 1.8 kΩ, Ro = 850 Ω. With a DC power source of 12 V, every amplificator consumes 1.5 mA of current average.
A. How many amplificators are needed to be connected in cascade to obtain a gain of at least 1000 Volts with a charge Resistance of 1.0 kΩ?
B. What is the AV voltage gain obtained ?
C. For the cascade connection find the voltage gain in an open circuit.
D. If we have a in of 1.5 mV, what is the efficiency of the equivalent amplificator ?
E. Find the transconductance of the whole circuit.

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