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2. List of automotive light bulb types - Wikipedia

   en.wikipedia.org/wiki/List_of_automotive_light...

   12V: ECE nominal luminous flux: 1,550 lm ±15% H3 1 6 V & 12 V: 55 W 24 V: 70 W PK22s USA, Japan 12V: ECE nominal luminous flux: 1,450 lm ±15% H4 2 6 V & 12 V: 60 / 55 W 24 V: 75 / 70 W P43t Japan Similar US bulb: HB2 (9003) 12V: ECE nominal luminous flux: 1,650 / 1,000 lm ±15% Available with P45t base to upgrade old headlamps designed for R2 ...

3. Bi-pin lamp base - Wikipedia

   en.wikipedia.org/wiki/Bi-pin_lamp_base

   The suffix after the G indicates the pin spread; the G dates to the use of Glass for the original bulbs. GU usually also indicates that the lamp provides a mechanism for physical support by the luminaire: in some cases, each pin has a short section of larger diameter at the end (sometimes described as a "peg" rather than a "pin" [2]); the socket allows the bulb to lock into place by twisting ...

4. LED circuit - Wikipedia

   en.wikipedia.org/wiki/LED_circuit

   Simple LED (Light Emitting Diode) circuit diagram. In electronics, an LED circuit or LED driver is an electrical circuit used to power a light-emitting diode (LED). The circuit must provide sufficient current to light the LED at the required brightness, but must limit the current to prevent damaging the LED.

5. Headlamp - Wikipedia

   en.wikipedia.org/wiki/Headlamp

   In 2013 the first digitally controlled full-LED glare-free "Matrix LED" adaptive headlamps were introduced by Audi on the facelifted A8, with 25 individual LED segments. [127] The system dims the light that would shine directly onto oncoming and preceding vehicles, but continues to cast its full light on the zones between and beside them.

6. LED lamp - Wikipedia

   en.wikipedia.org/wiki/LED_lamp

   A 230-volt LED filament lamp, with an E27 base. The filaments are visible as the eight yellow vertical lines. An assortment of LED lamps commercially available in 2010: floodlight fixtures (left), reading light (center), household lamps (center right and bottom), and low-power accent light (right) applications An 80W Chips on board (COB) LED module from an industrial light luminaire, thermally ...

7. Reference designator - Wikipedia

   en.wikipedia.org/wiki/Reference_designator

   IEEE 200-1975 or "Standard Reference Designations for Electrical and Electronics Parts and Equipments" is a standard that was used to define referencing naming systems for collections of electronic equipment. IEEE 200 was ratified in 1975. The IEEE renewed the standard in the 1990s, but withdrew it from active support shortly thereafter.