13.9 To limit the power dissipation in the op-amp circuit of Fig. 13.9 to an acceptable level, the total dc current is limited to 0.3 mA. If it is desired to bias each of Q1 and Q2 at a dc current four times the bias current of each of Q3 and Q4, find the values of IB, I, ID1,2, and ID3,4.
150 µA; 240 µA; 120 µA; 30 µA
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