Search results
Results from the WOW.Com Content Network
A lightbulb socket, lightbulb holder, light socket, lamp socket or lamp holder is a device which mechanically supports and provides electrical connections for a compatible electric lamp base. [1] Sockets allow lamps to be safely and conveniently replaced (re-lamping).
Prabhat Khabar is a Hindi-language daily newspaper published in Jharkhand, Bihar and West Bengal, with circulation in some other states in India, including parts of Orissa. It was founded in August 1984 in Ranchi, in Bihar. With the formation of Jharkhand state in November 2000, Ranchi became the capital of Jharkhand.
Movable lamps have a plug and cord that plugs into a wall socket. Light fixtures may also have other features, such as reflectors for directing the light, an aperture (with or without a lens), an outer shell or housing for lamp alignment and protection, an electrical ballast or power supply, and a shade to diffuse the light or direct it towards ...
AC power plugs and sockets connect devices to mains electricity to supply them with electrical power. A plug is the connector attached to an electrically-operated device, often via a cable. A socket (also known as a receptacle or outlet) is fixed in place, often on the internal walls of buildings, and is connected to an AC electrical circuit ...
Edison-base lamp sockets (called screw shell devices in the NEC) are required to have the neutral conductor attached to the outer screw shell [NEC 200.10(C)]. [5] In actual practice, the neutral terminal is silver colored, the line and load terminals are brass or (rarely) painted black), and the grounding screw is usually colored green.
In 2009, PSE&G in New Jersey became the first utility in the US to use induction fluorescent lamps to replace mercury vapor lamps, in 220 municipalities. [24] The induction lamps were expected to last 100,000 hours before requiring maintenance and consume 30 to 40 percent less electricity, thereby saving an estimated $1 million annually. [24]
The Centennial Light was originally a 60-watt bulb, but has since dimmed significantly and is now as bright as a 4-watt bulb. [7] [8] [9] The hand-blown, carbon-filament common light bulb was invented by Adolphe Chaillet, a French engineer who filed a patent for this socket technology. [10]
Gradually wall sockets were developed to supplement those that screwed into lampholders. [5] [6] [7] In 1912 Hubbell rotated his tandem pins by 90 degrees to arrive at the parallel flat pin configuration still widely used today (NEMA 1-15). A feature common to all of Hubbell's patented designs is the provision of detents to retain a plug in its ...