Introduction
In the realm of electrical engineering, the bistable relay stands out as a remarkable innovation that offers unique functionalities compared to conventional relays. Bistable relays, also known as latching relays, are designed to maintain their state even when the power supply is removed. This intrinsic characteristic not only makes them energy-efficient but also enhances their reliability in various applications. This article delves into the workings, advantages, disadvantages, and applications of bistable relays. What is a Bistable Relay? A bistable relay is an electromechanical switch that can exist in two stable states. Unlike traditional single-state relays that require continuous power to stay in an ‘on’ position, bistable relays retain their state indefinitely until a change is triggered by an external input. This mechanism is achieved using an electromagnet and a special internal configuration, allowing the relay to toggle between its two states, usually referred to as “set” and “reset.”