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A Darlington pair of transistors is connected as shown in Figure P10 39 The transistor parameters for large signal operation are

A Darlington pair of transistors is connected as shown in Figure P10.39. The transistor parameters for large-signal operation are Q1: β = 130; Q2: β = 70. Calculate the overall current gain.

10.40      The transistor shown in Figure P10.40 has

Vγ  = 0.6 V. Determine values for R1 and R2 such that

a.    The DC collector-emitter voltage, VCEQ , is5 V.

b.    The DC collector current, ICQ , will vary no more than 10% as β varies from 20 to 50.

c.    Values of R1 and R2 which will permit maximum symmetrical swing in the collector current. Assume β = 100.

Jun 18 2020 View more View Less

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