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DIMMER SWITCH
Dimmer switch. This is the inside of the switch. The working components of a dimmer switch consist of a rheostat (variable resistor, lower left). Turning a circular knob increases the resistance in the rheostat, thereby lowering the amount of voltage available to the light and dimming it. This is a somewhat innefficient solution, since a lot of power is lost as heat energy from the resistor. More efficient modern systems rapidly switch the electrical supply on and off to effect the same result. (KEYSTONE/SCIENCE PHOTO LIBRARY/ANDREW LAMBERT PHOTOGRAPHY)
Instructions
COPYRIGHTPFLICHTIG
License
Rights Managed
Date created
20050714
Place
Credit
KEYSTONE
Source
SCIENCE PHOTO LIBRARY SPL
Byline
ANDREW LAMBERT PHOTOGRAPHY
Size
4877 x 3582 px
File type
JPEG