understanding low voltage dc relay： key features and applications
Release time:2025-11-17 22:47:21
A Low Voltage DC Relay is a type of electromagnetic switch that is commonly used to control electrical circuits powered by low voltage direct current (DC). These relays are widely used in various industries, from automotive to home automation, because of their ability to control larger circuits with a small control signal. This article provides an in-depth overview of Low Voltage DC Relays, discussing their working principles, types, applications, and advantages.
What is a Low Voltage DC Relay?
At its core, a Low Voltage DC Relay is an electrically operated switch. It is designed to control the opening and closing of contacts in a low-voltage DC circuit. Typically, these relays operate on voltages ranging from 5V to 48V DC, and they are commonly used to manage circuits with a higher current rating, thus allowing smaller control circuits (such as microcontrollers or sensors) to manage larger, power-hungry electrical systems.
Relays work by using a coil that generates a magnetic field when current passes through it. This magnetic field either attracts or repels a movable armature, which, in turn, operates the switching mechanism to open or close the contacts. By controlling the flow of current in the coil, the relay can either activate or deactivate a larger circuit.
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