Question

Perform a simple initial design of an ac coupled common-emitter amplifier with
four resistor biasing and emitter by-pass capacitor, to have a voltage gain of about
100, for the following conditions. Justify any approximations used. (Assume Ic=1/300 A)

i)Transistor ac common-emitter gain, B, 100 ii) Supply voltage ofV0c-20V iii) Allow 10% Vcc across RE DC collector voltage of 10 V iv) v) DC current in the base bias resistors should be ten times greater than the DC base current. Assume VBE on) 0.6 V. The load resistor, R 1 k2. (Hint: first find a value for the collector resistor.) b) Estimate a value for the input capacitor, C to set the low-frequency roll-off to be 1 kHz. Which is the preferred way to set the low-frequency roll-off and how is this c) generally accomplished? What would be a practical value for Cv d) What would be the next step in the design process?

Answer 1

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Assume Cuctent slouin in RR is oE 0 3367m R250 VE - TeRE 3367m (RE) . RE 5942

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