An Overview of Relays
Relays, different from solenoids, use electromagnetic force to pull the electrical contact to open or close rather than to provide mechanical movement.
What is the Working Principle of Relays?
Relays, unlike solenoids, use electromagnetic force to pull the electrical contact to open or close rather than to provide mechanical movement. When no current passes through the coil, no electromagnetic force is generated. The armature remains attached to the normally closed contact. When a magnetic force is generated by the coil current, the armature will be pulled to contact the normally open contact.
Photo Relays vs. Mechanical relays
1. Photorelay: Using light to switch on and off
Mechanical relays: Using movable contacts to switch on and off
2. Photorelay: Fast and quiet switching.
Mechanical relays: Slow switching with a loud clicking sound
3. Photorelay: Long-lasting without contact parts
Mechanical relays: Shorter lifespan due to pressure resulting from the movable contacts
4. Photorelay: Low input power consumption
Mechanical relays: High input power consumption
What are the LCSC Categories of Relays?
Magnetic Latching Relays, Relay Sockets and Accessories, Signal Relays, Reed Relays, Automotive Relays, Power Relays High Frequency / RF Relay