D 8.90 (a) Utilizing a reference current of 200 μA, design a Widlar current source to provide an output current of 20 μA. Assume β to be high. (b) If β = 200 and VA = 50 V, find the value of the output resistance, and find the change in output current corresponding to a 5-V change in output voltage.

8.90 - D 8.90 (a) Utilizing a reference current of 200 μA, design a Widlar current source to provide an output current of 20 μA. Assume β to be high. (b) If β = 200 and VA = 50 V, find the value of the output resistance, and find the change in output current corresponding to a 5-V change in output voltage.

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images - D 8.90 (a) Utilizing a reference current of 200 μA, design a Widlar current source to provide an output current of 20 μA. Assume β to be high. (b) If β = 200 and VA = 50 V, find the value of the output resistance, and find the change in output current corresponding to a 5-V change in output voltage.

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