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The switch is controlled by a PWM (Pulse Width Modulation) signal, which alternately turns the switch on and off at a rapid rate. The relative proportion of off time vs. on time determines brightness. For example, if the switch is off 10% of the time, the resulting control signal would be the equivalent of 1 V produced with a variable resistor.
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. Although variable-voltage devices are used for various purposes, the term dimmer is generally reserved for those intended to ...
Electrical installations. In building wiring, multiway switching is the interconnection of two or more electrical switches to control an electrical load from more than one location. A common application is in lighting, where it allows the control of lamps from multiple locations, for example in a hallway, stairwell, or large room.
In Los Angeles, for one, a median-income household needs to put down 81.1%, or $780,203, to afford the typical home and its monthly payments; she called that percentage, the highest in the nation ...
Get 30% off regular, sale, and clearance merchandise at Kohl's when you pay with your Kohl's charge card and use coupon code LOVE2SAVE30. Valid today through Oct. 6, 2010. Valid today through Oct ...
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