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2. Dimmer - Wikipedia

   en.wikipedia.org/wiki/Dimmer

   A thyristor dimmer rack An electrical schematic for a typical SCR-based light dimmer Solid-state , or semiconductor , dimmers were introduced to solve some of these problems. Semiconductor dimmers switch on at an adjustable time (phase angle) after the start of each alternating-current half-cycle, thereby altering the voltage waveform applied ...

3. Light switch - Wikipedia

   en.wikipedia.org/wiki/Light_switch

   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]

4. 50 Times Cheap Fixes Had A Major Impact On Home Life - AOL

   www.aol.com/55-people-share-relatively-cheap...

   "Electrical work, major plumbing renovations, and large-scale structural changes are best left to experts with the requisite skills and experience." ... Adding 4 recessed lights on a dimmer switch ...

5. Wireless light switch - Wikipedia

   en.wikipedia.org/wiki/Wireless_light_switch

   Some of these switches rely on batteries for power output while most are required to be wired into an existing electrical system. Lightning Switch, EnOcean, CHERRY and others manufacture wireless light switches that use energy harvesting instead of batteries ISM ENIGMA. The mechanical energy created by pressing the switch generates enough ...

6. Power electronics - Wikipedia

   en.wikipedia.org/wiki/Power_electronics

   Power electronic devices may be used as switches, or as amplifiers. [16] An ideal switch is either open or closed and so dissipates no power; it withstands an applied voltage and passes no current or passes any amount of current with no voltage drop. Semiconductor devices used as switches can approximate this ideal property and so most power ...

7. Chopper (electronics) - Wikipedia

   en.wikipedia.org/wiki/Chopper_(electronics)

   The longer the switch is on compared to the off periods, the higher the total power supplied to the load. The PWM switching frequency has to be much higher than what would affect the load (the device that uses the power), which is to say that the resultant waveform perceived by the load must be as smooth as possible.