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Modern emergency floodlights provide a high-lumen, wide-coverage light that can illuminate an area quite well. Some lights are halogen, and provide a light source and intensity similar to that of an automobile headlight. Early battery backup systems were huge, dwarfing the size of the lights for which they provided power.
The lightbars mounted on the cars are LED-based. The illuminated back-up lamps seen in the two cars in the foreground are being used as emergency lights which operate on a different circuit, rather than burning steadily to indicate that the cars are in reverse gear. LED lighting on an ambulance in Toronto
LED backlighting in color screens comes in two varieties: white LED backlights and RGB LED backlights. [10] White LEDs are used most often in notebook computers and desktop screens, and make up virtually all mobile LCD screens. A white LED is typically a blue LED with broad spectrum yellow phosphor to result in the emission of white light ...
The first car registered to drive on the road with full LED rear lights was Land Rover's LCV 2/3 concept car in the 1990s. [143] At the time, the only light function that was difficult to reproduce was the reverse light, as white LEDs did not yet exist.
Reverse bias: Although the LED is based on a diode junction and is nominally a rectifier, the reverse-breakdown mode for some types can occur at very low voltages and essentially any excess reverse bias can cause immediate degradation, and may lead to vastly accelerated failure. 5 V is a typical maximum reverse bias voltage specification for ...
Andrew Wiggins led the way with 25 points for the Warriors, who dropped to 21-22 with the loss. Stephen Curry had 14 points, all but two of which came in the first half, and 12 assists. He shot ...
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