Miniature relays are essential components in a wide range of electrical and electronic systems. Despite their compact size, these relays are designed to switch large currents or voltages with a relatively low power control signal, making them versatile and widely used in various applications. In this article, we will explore what miniature relays are, how they function, and their applications in everyday devices and industries.
What is a Miniature Relay? A miniature relay is an electromechanical device that uses an electromagnet to control the opening or closing of electrical contacts. It operates by using a small coil of wire (electromagnet) to produce a magnetic field when current flows through it. This magnetic field moves a mechanical arm (the armature), which in turn opens or closes the electrical contacts. The size of the relay is typically compact, and this makes them ideal for use in environments where space is at a premium. Miniature relays can be designed for a wide range of switching voltages, from low-voltage systems to high-voltage applications, depending on the needs of the circuit. They come in different configurations, including single-pole and double-pole switches, and can be either normally open (NO) or normally closed (NC) contacts.
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