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  2. This Is Why Your Light Is Buzzing - AOL

    www.aol.com/why-light-buzzing-170500715.html

    Moving the light off of a dimmer switch may help, but the best thing to do is replace the old incandescent bulb with an energy-saving LED. Trust us, you can find one that replicates its soft ...

  3. Flicker (light) - Wikipedia

    en.wikipedia.org/wiki/Flicker_(light)

    In visual perception, flicker is a human-visible change in luminance of an illuminated surface or light source which can be due to fluctuations of the light source itself, or due to external causes such as due to rapid fluctuations in the voltage of the power supply (power-line flicker) or incompatibility with an external dimmer.

  4. Power-line flicker - Wikipedia

    en.wikipedia.org/wiki/Power-line_flicker

    Power-line flicker is a visible change in brightness of a lamp due to rapid fluctuations in the voltage of the power supply. The voltage drop is generated over the source impedance of the grid by the changing load current of an equipment or facility. These fluctuations in time generate flicker.

  5. 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 ...

  6. Hydrargyrum medium-arc iodide lamp - Wikipedia

    en.wikipedia.org/wiki/Hydrargyrum_medium-arc...

    Most modern ballasts are now also equipped with a dimmer, which uses pulse-width modulation to dim the lamp up to 50%, or as much as one stop of light. Unlike a tungsten-based light, which has a negative color temperature shift with a drop in power, the mercury emission spectra takes over with a drop in power (approximately 200 K bluer at 50% ...

  7. Why do all the lights on the dashboard flicker on and off at ...

    www.aol.com/why-lights-dashboard-flicker-off...

    Q: I am having an electrical problem with my 2008 Nissan Altima coupe — all the lights on my dashboard flicker on and off at random times. I have taken my car to multiple mechanics over the last ...

  8. 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]

  9. Joel Spira (businessman) - Wikipedia

    en.wikipedia.org/wiki/Joel_Spira_(businessman)

    Joel Solon Spira (March 1, 1927 – April 8, 2015) was an American inventor, entrepreneur, and business magnate.. He invented a version of the light-dimmer switch for use in homes around the United States and led his Lutron Electronics Company into the production of lighting controllers.