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2. Kliegl Brothers Universal Electric Stage Lighting Company

   en.wikipedia.org/wiki/Kliegl_Brothers_Universal...

   The company was also offering their "Dynabeam" lensed follow spot, and Fresnel lanterns ranging from 100 to 2000 watts. In that era of patch panels and small numbers of high wattage dimmers, Kliegl Brothers offered its "Safpatch" patch panels, and "Rotolector" rotary power switches, both developed by Herbert Kliegl.

3. Vari-Lite - Wikipedia

   en.wikipedia.org/wiki/Vari-Lite

   The VLDi (Vari*Lite Dimmer interface) was a 96 channel 0–10 V analogue interface between a conventional dimmer unit and the Series 200 control system. Each unit took up 100 of the 1000 available control channels, which gave the Artisan control console considerable potential.

4. Dimmer - Wikipedia

   en.wikipedia.org/wiki/Dimmer

   Dimmer in a residential application with RF-based remote control. Non domestic dimmers are usually controlled remotely by means of various protocols. Analogue dimmers usually require a separate wire for each channel of dimming carrying a voltage between 0 and 10 V. Some analogue circuitry then derives a control signal from this and the mains ...

5. 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.

6. These Are the Most Valuable Christmas Records of All Time - AOL

   www.aol.com/most-valuable-christmas-records-time...

   Larina Marina/istockphotoIt’s the time of year when Christmas music gets stuck in all of our heads by the day after Thanksgiving. We’re not talking about being haunted by Mariah Carey’s ...

7. Incandescent light bulb - Wikipedia

   en.wikipedia.org/wiki/Incandescent_light_bulb

   For example, a 100-watt, 120-volt lamp has a resistance of 144 ohms when lit, but the cold resistance is much lower (about 9.5 ohms). [76] [b] Since incandescent lamps are resistive loads, simple phase-control TRIAC dimmers can be used to control brightness. Electrical contacts may carry a "T" rating symbol indicating that they are designed to ...