Q7. Voltage Regulator
The circuit below is a voltage regulator and produces a stabilized output voltage. The circuit incorporates a transistor Q1 in an emitter-follower configuration within the feedback loop. The transistor's role is to supply the load with a current greater than what can be achieved with the op-amp alone. Simultaneously, a Zener diode Z1 provides a stable input voltage Vz to the non-inverting terminal of the op-amp. The resistor R_1 maintains the Zenor diode in its operating region and hence stable Vz - the operational amplifier functions as a voltage comparator. Find the output voltage V_{out} , when V_{in} V_{z} .

Question

Q7. Voltage Regulator 
 The circuit below is a voltage regulator and produces a stabilized output voltage. The circuit incorporates a transistor Q1 in an emitter-follower configuration within the feedback loop. The transistor's role is to supply the load with a current greater than what can be achieved with the op-amp alone. Simultaneously, a Zener diode Z1 provides a stable input voltage   Vz  to the non-inverting terminal of the op-amp. The resistor   R_1  maintains the Zenor diode in its operating region and hence stable   Vz  - the operational amplifier functions as a voltage comparator. Find the output voltage   V_{out} , when   V_{in} > V_{z} .

Answer

V_{out} = -(1 + \frac{R_2}{R_1})V_z

Answer

V_{out} = (1 - \frac{R_2}{R_3})V_z

Answer

V_{out} = (1 + \frac{R_2}{R_3})V_z

Answer

V_{out} = (1 + \frac{R_1}{R_3})V_z

Answer

V_{out} = (1 - \frac{R_1}{R_3})V_z

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Q7. Voltage Regulator The circuit below is a voltage regulator and produces a ...

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