Home / Questions / A Darlington pair of transistors is connected as shown in Figure P10 39 The transistor par...
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.
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