An electrical stabilizer is a device used to regulate the voltage of an electrical power supply to a constant level. It is commonly used in areas where the electrical grid experiences fluctuations or variations in voltage, which can cause damage to sensitive electronic equipment.

Electrical stabilizers work by monitoring the input voltage and automatically adjusting the output voltage to maintain a constant level, usually within a range of +/- 10%. They are available in different sizes and capacities, depending on the load they are intended to regulate.

There are two main types of electrical stabilizers: the relay-type stabilizer and the electronic stabilizer. The relay-type stabilizer uses electromagnetic relays to regulate the voltage, while the electronic stabilizer uses solid-state electronic components.

Some of the advantages of using an electrical stabilizer include improved equipment performance, increased equipment lifespan, reduced power consumption, and protection against voltage spikes and surges.