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The switch on the right is a dimmer switch. The switch box is covered by a decorative plate. The first light switch employing "quick-break technology" was invented by John Henry Holmes in 1884 in the Shieldfield district of Newcastle upon Tyne. [1] The "quick-break" switch overcame the problem of a switch's contacts developing electric arcing ...
A similar design was introduced in 1925 by Guide Lamp called the "Duplo". In 1927 the foot-operated dimmer switch or dip switch was introduced and became standard for much of the century. 1933–1934 Packards featured tri-beam headlamps, the bulbs having three filaments.
A dimmer rack containing 192 dimmers, with one dimmer per circuit. The dark-grey box at the upper left is a demultiplexer. Dimmer in a residential application with RF-based remote control. Non domestic dimmers are usually controlled remotely by means of various protocols.
Many memory consoles have a bank of faders. These faders can be programmed to control a single channel (a channel is a lighting designer's numerical name for a dimmer or group of dimmers) or a group of channels (known as a ""submaster""). The console may also have provision to operate in analog to a manual desk for programming scenes or live ...
It requires a starter switch (below). A lamp starter, required with some inductor type ballasts. It connects the two ends of the lamp to preheat them for one second before lighting. An electrical ballast is a device that limits the current through an electrical load. These are most often used when a load (such as an arc discharge) has its ...
The toggle light switch is safe, reliable, and durable, but produces a loud "snap" or "click" noise when a person's finger manually flips the toggle light switch into the on/off position. The design for the toggle light switch was patented in 1916 by William J. Newton and Morris Goldberg of Lynbrook, New York. [154] 1917 Stream cipher