What is a Shunt regulator?

A shunt regulator is an electronic component or circuit used to maintain a stable voltage by diverting excess current when the voltage exceeds a certain threshold. It operates by connecting in parallel with the load, and once the input voltage goes beyond the desired level, the regulator begins to conduct current to "shunt" the surplus. Shunt regulators are typically built using Zener diodes or precision ICs like the TL431, and their reference voltage can be adjusted with external resistors. They are commonly used for creating reference voltages, clamping voltages, or protecting sensitive circuits from overvoltage.

Advantages:
✅ Simple design and implementation
✅ Fast response time
✅ Available in compact IC packages
Disadvantages include continuous power dissipation (even with no load) and unsuitability for high-current applications.

※Includes information on some trading companies