bistable relay： a comprehensive overview of its function and applications
Release time:2025-11-10 10:51:37
A Bistable Relay, also known as a latching relay or a maintainable relay, is a type of relay that has two stable states and can hold its state even when the power is removed. Unlike conventional relays that require continuous power to maintain their status, bistable relays are energy-efficient, providing a unique solution in various control systems. This article explores the functioning of bistable relays, their advantages, and the diverse applications they serve in both industrial and consumer electronics.
Functionality of Bistable Relays
A bistable relay operates based on the principle of electromagnetic switching. The relay consists of two main coils： one for setting the relay to the "ON" position, and another for resetting it to the "OFF" position. Each coil is activated independently by a control signal, which triggers the relay to either latch or unlatch. This switching mechanism enables the bistable relay to retain its state without the need for continuous power.
When a control signal is sent to one coil, the relay moves to a stable state (either ON or OFF). Once set, the relay remains in that state until the opposite coil is activated, which changes the state of the relay. This feature allows bistable relays to save energy because they only consume power momentarily during state changes, as opposed to continuously maintaining an energized state like traditional relays.
Chat Oline