The equivalent circuit of a transducer that measures the speed of a motor is a current source in parallel with an output resistance. The current source produces an output of 1 μA per revolution per second of the motor and the output resistance is 50 k Ω.
Design a discrete transistor circuit that produces a full-scale output of 5 V for a maximum motor speed of 60 revolutions per second.
The nominal transistor current gain is hFE = 100 with tolerances of ±20 percent. The accuracy of the output signal is to remain within ±1 percent.