Thyristor

Okay kiddo, so a thyristor is like a switch that can turn on and off really quickly. It's made up of three different parts called a gate, an anode, and a cathode.

When a small electric current is sent to the thyristor's gate, it allows a larger current to flow from the anode to the cathode. This is like turning on a light switch to make the light turn on.

But here's the cool part - once the thyristor is turned on, it stays on until the current flowing through it drops to zero. This is like the light staying on until you turn off the switch.

This makes thyristors really useful in things like power tools and electronic devices where you need a quick and reliable switch. Hope that helps you understand, little one!