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The incandescent light bulb was for a long time the only light source used in automotive lighting. Incandescent bulbs are still commonly used in turn signals to stop hyper-flashing of the turn signal flashers. Many types of bulbs have been used. Standardized type numbers are used by manufacturers to identify bulbs with the same specifications.
Both standards differ markedly from the UN (formerly "European") standards used in most other countries worldwide, not only in technical provisions, terminology, and requirements, but also in format: each European standard deals with only one type of lighting device, while the single U.S. and Canadian standards regulate all lighting and ...
Automotive electronics are electronic systems used in vehicles, including engine management, ignition, radio, carputers, telematics, in-car entertainment systems, and others. Ignition, engine and transmission electronics are also found in trucks , motorcycles , off-road vehicles , and other internal combustion powered machinery such as ...
A daytime running lamp (DRL, also daytime running light) is an automotive lighting and bicycle lighting device on the front of a road going motor vehicle or bicycle. [1] It is automatically switched on when the vehicle's handbrake has been pulled down, when the vehicle is in gear , or when the engine is started, emitting white, yellow , or ...
Here, light is generated from a chemically exothermic reaction. The chemiluminescence might be also induced by an electrochemical stimulus, in this case is called electrochemiluminescence . Bioluminescence in nature: A male firefly mating with a female of the species Lampyris noctiluca .
For battery-operated devices, this voltage must be generated by a boost converter circuit within the device. This converter often makes a faintly audible whine or siren sound while the backlight is activated. Line-voltage-operated devices may be activated directly from the power line; some electroluminescent nightlights operate in this fashion.
Metal-halide and ceramic metal-halide lamps can be made to give off neutral white light useful for applications where normal color appearance is critical, such as TV and movie production, indoor or nighttime sports games, automotive headlamps, and aquarium lighting. Low-pressure sodium-vapor lamps are extremely efficient.
Carbide lighting was inexpensive, but was prone to gas leaks and explosions. Early models of the automobile, car, motorbike and bicycle used carbide lamps as headlamps . Acetylene gas, derived from carbide, enabled early automobiles to drive safely at night.