Ce amplifier with an active load provided by transistor

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Reference no: EM131037861

8.49 Transistor Q1:
in the circuit of Fig. P8.49 is operating as a CE amplifier with an active load provided by transistor 2 which is the output transistor in a current mirror formed by Q2:
and Q3: (Note that the biasing arrangement for Q1: is not shown.)
(a) Neglecting the finite base currents of Q2:
and Q3:
and assuming that their VBE ?0.7 V and that Q2:
has five times the area of Q3:
find the value of I.
(b) IfQ1:
andQ2:
are specified to have /VA / =30 V, find ro1 and ro2 and hence the total resistance at the collector of Q1:

(c) Find rπ1 and gm1 assuming that β1 = 50. (d) Find Rin , Av , and Ro.

Reference no: EM131037861

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