Which type of control circuits do relays typically use?

Relays typically operate using low amperage control circuits. This is because relays are devices designed to control a high-power circuit using a low-power signal. They function by using a small electrical current to activate an electromagnetic switch, which can then control larger loads in high-voltage power circuits without needing to directly handle that high voltage or high current themselves. This feature is what makes relays so versatile and widely used in various applications, from automotive systems to industrial automation.

The use of low amperage control circuits allows for safe operation and efficient switching while minimizing the risk of electric shock or equipment damage. Relays can effectively manage significant electrical loads by isolating the high-power side from the low-power signal side, which enhances both safety and functionality in electrical systems.