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Portable lamps such as table lamps may have a light switch mounted on the socket, base, or in-line with the cord. Manually operated on/off switches may be substituted by dimmer switches that allow controlling the brightness of lamps as well as turning them on or off, time-controlled switches, occupancy-sensing switches, and remotely controlled ...
A 3-way lamp, also known as a tri-light, is a lamp that uses a 3-way light bulb to produce three levels of light in a low-medium-high configuration. A 3-way lamp requires a 3-way bulb and socket, and a 3-way switch. In 3-way incandescent light bulbs, each of the filaments operates at full voltage. Lamp bulbs with dual carbon filaments were ...
A socket with a built-in switch is far more likely to fail in normal use as the switch parts wear out. Insulation failures are usually caused by impacts or by difficulty inserting or removing a lamp. Sockets used outdoors or in damp areas often suffer from corrosion which can cause the lamp to "stick" in the socket and attempts to change a lamp ...
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Video demonstrating the operation of a touch-sensitive lamp. A touch-sensitive lamp is a combination of a lamp and a touch switch. They act on the principle of body capacitance, activated by human touch rather than a flip, push-button, or other mechanical switch. They are popular as desk and nightstand lamps. Touch-sensitive lamp switches may ...
John White Howell (December 22, 1857 – July 28, 1937) was an American electrical engineer who spent his entire professional career (1880 to 1930) working for Thomas Edison, specializing in the development and manufacturing of the incandescent lamp. In 1924 Howell was a recipient of the IEEE Edison Medal for his contributions towards the ...
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Bell and Howell is a United States brand of cameras, lenses, and motion picture machinery. It was originally founded as a company in 1907, and headquartered in Wheeling, Illinois . The company was acquired by Böwe Systec in 2003.
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