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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.
A common dual dimmer module used in stage lighting A dimmer A dimmer is a device connected to a light fixture and used to lower the brightness of the light . By changing the voltage waveform applied to the lamp, it is possible to lower the intensity of the light output.
Many memory consoles have a bank of faders. These faders can be programmed to control a single channel (a channel is a lighting designer's numerical name for a dimmer or group of dimmers) or a group of channels (known as a ""submaster""). The console may also have provision to operate in analog to a manual desk for programming scenes or live ...
A typical SCR based light dimmer which dims the light through phase angle control. This unit is wired in series with the load. Diodes (D 2, D 3, D 4 and D 5) for a bridge which generates DC with much ripple. R and C form a circuit with a time constant, as the voltage increases from zero (at the start of every halfwave) C will charge up, when C ...
A U.S. defense official told CBS News that Travis Timmerman was flown out of Syria and into Jordan by the U.S. military and handed over to the State Department.
House and work lights are usually off during performances but are occasionally included in the lighting design to establish focus or emphasize plot elements. When the house lights are not on a dimmer, the switch is usually under the control of the stage manager. [15]