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In building wiring, multiway switching is the interconnection of two or more electrical switches to control an electrical load from more than one location.A common application is in lighting, where it allows the control of lamps from multiple locations, for example in a hallway, stairwell, or large room.
[1] In 1959, Joel S. Spira, who would found the Lutron Electronics Company in 1961, invented a dimmer based on a then-new solid state switching device called a Silicon Controlled Rectifier or SCR. This small device allowed the dimmer to be installed in a standard electrical wall box while saving energy. [2] [3]
Troubleshooting is a form of problem solving, often applied to repair failed products or processes on a machine or a system. It is a logical, systematic search for the source of a problem in order to solve it, and make the product or process operational again.
For every 3 non-theme words you find, you earn a hint. Hints show the letters of a theme word. If there is already an active hint on the board, a hint will show that word’s letter order.
A group of passengers sprung into action and stopped a man who allegedly tried to open the cabin door mid-flight during a trip to Dallas Tuesday morning by restraining him with duct tape ...
3. Domino's: $7 Mix and Match Deal. The best long-running meal deal at Domino's is the $7 Mix and Match. You need to order at least two items, but you can get as many as you want from choices such ...
Two light switches in one box. 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]
Mikaela Shiffrin’s bid to win her 100th World Cup race victory took a hit on Saturday, after the 29-year-old crashed out of the giant slalom during this weekend’s Stifel Killington Cup in Vermont.