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2. Holiday lighting technology - Wikipedia

   en.wikipedia.org/wiki/Holiday_lighting_technology

   Incandescent miniatures now usually come in sets of 50 or 100 (which contains two circuits of 50) 2.5 V 170 mA bulbs, though decorative sets with larger bulbs (C6 or pearl style) typically come in sets of 35 or 70. Several "extra-bright" sets also use 70 or 105 bulbs, keeping the per-bulb voltage at 3.5 instead of 2.5. LED sets can vary greatly.

3. Bi-pin lamp base - Wikipedia

   en.wikipedia.org/wiki/Bi-pin_lamp_base

   Bi-pin lamp base. A bipin or bi-pin (sometimes referred to as two-pin, bipin cap or bipin socket) is a type of lamp fitting. They are included in the IEC standard "IEC 60061 Lamp caps and holders together with gauges for the control of interchangeability and safety". They are used on many small incandescent light bulbs (especially halogen lamps ...

4. Twinkle bulb - Wikipedia

   en.wikipedia.org/wiki/Twinkle_bulb

   The advent of miniature lights found the adaptation of twinkle bulbs as flasher bulbs, which interrupt the entire series circuit of anywhere from 10 to 50 bulbs when powered from 120-volt mains electricity (in North America). These are easily recognizable by their red tips on an otherwise unpainted clear white bulb, and are available in the ...

5. List of automotive light bulb types - Wikipedia

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

   12 V: 19 W Red PWY19W WP3.3×14.5-2 1 12 V: 19 W Amber, ANSI № 7449 P21W BA15s 1 6 V, 12 V, 24 V: 21 W ECE nominal luminous flux: 460lm ± 15% Old designation: P25-1 PR21W BAW15s 1 12 V & 24 V: 21 W Red PY21W BAU15s 1 12 V & 24 V: 21 W Amber ECE nominal luminous flux: 280 lm ±20% P21/4W BAZ15d 2 12 V & 24 V: 21 / 4 W PR21/4W BAU15d 2

6. Phase-out of incandescent light bulbs - Wikipedia

   en.wikipedia.org/wiki/Phase-out_of_incandescent...

   Announced in 2011 China has banned imports and sales of certain incandescent light bulbs since October 2012 to encourage the use of alternative lighting sources such as light-emitting diodes (LEDs), with a 5-year plan of phasing-out incandescent light bulbs over 100 watts starting 1 October 2012, and gradually extend the ban to those over 15 ...

7. List of battery sizes - Wikipedia

   en.wikipedia.org/wiki/List_of_battery_sizes

   3LR12 (4.5-volt), D, C, AA, AAA, AAAA (1.5-volt), A23 (12-volt), PP3 (9-volt), CR2032 (3-volt), and LR44 (1.5-volt) batteries. This is a list of the sizes, shapes, and general characteristics of some common primary and secondary battery types in household, automotive and light industrial use. The complete nomenclature for a battery specifies ...