lampholder

A lampholder, also known as a lamp socket or lamp base, is a device used to hold and electrically connect a light bulb or lamp to a power source. Lampholders are essential components in lighting systems, providing both mechanical support and electrical connectivity for bulbs. They are commonly found in a variety of fixtures, including table lamps, floor lamps, ceiling lights, and outdoor lighting.

Lampholders come in different types, each designed for specific bulb sizes and electrical configurations. Common types include bayonet cap (E-type), screw cap (Edison), and push-in (bi-pin) sockets. The bayonet cap, often labeled as "B22" or "E27," features two prongs that lock into place by twisting, while the screw cap, such as "E12" or "E26," secures the bulb by screwing it into the socket. Push-in sockets, like those used in some LED bulbs, require no twisting or screwing, simply pressing the bulb into place.

The construction of a lampholder typically includes a metal or ceramic base, electrical contacts, and a mounting mechanism. The metal or ceramic material ensures durability and heat resistance, while the electrical contacts provide a secure connection for the bulb’s filaments or LED components. Lampholders may also include features like a switch, dimmer compatibility, or grounding for safety.

Lampholders are widely used in both residential and commercial settings. In homes, they are integral to household lighting, while in businesses, they support signage, task lighting, and decorative illumination. Proper installation and maintenance of lampholders are crucial for safety, as faulty connections can lead to electrical hazards or fire risks. When replacing bulbs, it is important to ensure compatibility with the lampholder’s type and voltage rating to avoid damage to the fixture or electrical system.