标题: Understanding Latching Relay: A Key Component for Low-Power Applications
Latching relays, often referred to as “memory relays” or “bistable relays,” are specialized electromechanical devices used to control the state of a circuit. Unlike traditional relays that require continuous electrical current to maintain their position, latching relays retain their state even when power is removed. This characteristic makes them ideal for low-power applications, where minimizing energy consumption is crucial. Working Principle of Latching Relays The core feature of a latching relay lies in its ability to maintain its switched state without needing continuous power. This is achieved through a mechanism called bistability, which essentially means that the relay has two stable positions: one for the “on” state and one for the “off” state. A latching relay typically features two coils – one to change its state and the other to reset it.