Advantages:
- The transistor shunt regulator has a good efficiency for small load currents.
- It has eased to reject short circuit.
- The voltage regulation is good.
- It has constant DC output voltage.
Disadvantages:
- It has poor efficiency for large load currents.
- It has high output impedance.
- The output DC voltage is not absolutely constant because both VBB and VZ voltages decrease with increase in room temperature.
- The DC output voltage cannot be changed easily as no such means is provided.
- It can be used for large currents loads.
