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7.105 It is required to bias the transistor in the circuit of Fig. 7.51(b) at IC = 1 mA. The transistor β is specified to be nominally 100, but it can fall in the range of 50 to 150. For V CC = +3 V and RC = 2 k, find the required value of RB to achieve I C = 1 mA for the “nominal” transistor. What is the expected range for IC and VCE? Comment on the efficacy of this bias design.