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2. 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.

3. Dimmer - Wikipedia

   en.wikipedia.org/wiki/Dimmer

   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.

4. Lighting control system - Wikipedia

   en.wikipedia.org/wiki/Lighting_control_system

   In the 1980s there was a strong requirement to make commercial lighting more controllable so that it could become more energy efficient. Initially this was done with analog control, allowing fluorescent ballasts and dimmers to be controlled from a central source. This was a step in the right direction, but cabling was complicated and therefore ...

5. Stage lighting - Wikipedia

   en.wikipedia.org/wiki/Stage_lighting

   Most modern dimmers are solid state, though many mechanical dimmers are still in operation. [24] In many cases, a dimmer can be replaced by a constant power module (CPM), which is typically a 20- or 50-ampere breaker in a dimming module casing. CPMs are used to supply line voltage to non-dimming electrical devices such as smoke machines, chain ...

6. Pulse-width modulation - Wikipedia

   en.wikipedia.org/wiki/Pulse-width_modulation

   Adjusting the brightness of light emitted by a light source is then merely a matter of setting at what voltage (or phase) in the AC half-cycle the dimmer begins to provide electric current to the light source (e.g. by using an electronic switch such as a triac). In this case the PWM duty cycle is the ratio of the conduction time to the duration ...

7. 25 Black Friday deals that are worth the splurge: Kate Spade ...

   www.aol.com/lifestyle/black-friday-deals-that...

   New deals just dropped, including our favorite digital picture frame, every Apple device you can think of, and a Barbie dreamhouse any kid would be thrilled to open Christmas morning.