Search results
Results from the WOW.Com Content Network
The development of automatic headlight systems at General Motors can be traced back to the early 1950s. In 1952, GM introduced the Autronic Eye, an automatic headlight dimming system, for Oldsmobile and Cadillac models. [2] Twilight Sentinel, which expanded on the concept of automatic lighting control, was introduced in the mid-1960s.
Full-voltage vs. parking light headlamp on European-market Volkswagen, 2007. Depending on prevailing regulations and equipment, vehicles may implement the daytime-running light function by functionally turning on specific lamps, by operating low-beam headlamps or fog lamps at full or reduced intensity, by operating high-beam headlamps at reduced intensity, or by steady-burning operation of the ...
Since it was the top-line Oldsmobile, the series had the most technologically advanced items available, such as the Hydramatic automatic transmission, the Autronic Eye, an automatic headlight dimmer, and Twilight Sentinel (a feature that automatically turned the headlights on and off via a light sensor and a delay timer, as controlled by the ...
General Motors introduced the first automatic headlight dimmer called the "Autronic Eye" in 1952 on their Cadillac, Buick, and Oldsmobile models; the feature was offered in other GM vehicles starting in 1953. [148] [149] The system's phototube and associated circuitry were housed in a gunsight-like tube atop the dashboard. An amplifier module ...
The first Ford Model T used carbide lamps for headlights and oil lamps for tail lights. It did not have all-electric lighting as a standard feature until several years after its introduction. Dynamos for automobile headlights were first fitted around 1908 and became commonplace in 1920s automobiles.
In larger lighting systems, for example warehouses or outdoor lighting systems, the required current may be too high for a manual switch. In these systems light switches control lighting contactors , a relay that allows the manual light switch to operate on a lower current, with smaller wiring than would be required in the main lighting circuit.
Donald Trump continues to threaten tariffs against foreign nations, this time toward a bloc of nine countries if they try to undermine the dollar's global dominance.
The SCR shuts off when the current falls to zero and the supply voltage drops at the end of the half cycle, ready for the circuit to start work on the next half cycle. This circuit is called a leading-edge dimmer or forward phase dimming. Waveform of the output voltage of a thyristor dimmer set for 60 volts RMS output, with 120 V input.