What does SPDT stand for in electrical switches?

SPDT stands for Single Pole Double Throw. This type of switch is designed to control a single circuit with two distinct output paths. In practical terms, an SPDT switch has one input terminal and two output terminals. Depending on its position, it can connect the input to one of the two outputs. This functionality allows for versatile control of electrical devices, such as switching between two different circuits or states.

For instance, in a lighting application, an SPDT switch could be used to control a light from two different locations, facilitating a three-way switching system. Understanding the configuration and operation of SPDT switches is crucial for technicians, as they are commonly used in various electrical applications, including electronics and aviation systems.