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The circuit in Fig.1 is a voltage regulator utilizing an ideal op amp. (a) Find the output voltage of the circuit if the zener

The circuit in Fig.1 is a voltage regulator utilizing an ideal op amp. (a) Find the output voltage of the circuit if the zener diode voltage is 5v. (b) What are the current in the zener diode and the drain current in the NMOS transistor? (c) What is the op amp output voltage if the MOSFET has VTN = 1.25V and Kn = 150 mA/V2? Figure 1 Ik RB Vec , 15 V MbreakN OPAMP D, R2 4.7 k RL Dbreak R1 4.7 k

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