understanding bistable relays： functionality, applications, and advantages
Release time:2025-09-16 18:13:30
A bistable relay, also known as a latching relay, is a type of electromagnetic relay that holds its state once it has been activated, without the need for continuous power supply to maintain that state. This makes bistable relays an efficient choice for applications where low power consumption and state retention are crucial. In this article, we will explore the functionality, applications, and advantages of bistable relays, explaining why they are a valuable component in various electrical and automation systems.
What is a Bistable Relay?
A bistable relay is designed to switch between two stable states： ON and OFF. Unlike traditional relays, which require continuous electrical power to maintain a state, bistable relays only consume power during the switching process. Once the relay has shifted to either its ON or OFF position, it remains there until it is triggered again. This mechanism is typically achieved using a system of magnets and springs, or through the use of electronic components that hold the relay in place after it has been switched.
Functionality of Bistable Relays
The primary feature of a bistable relay is its ability to retain a specific state without continuous power. This is accomplished through a latching mechanism, where the relay maintains its position until a control signal is applied to change its state. Bistable relays generally have two control inputs： one for setting the relay to the ON state and another for resetting it to the OFF state.
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