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  2. Compact fluorescent lamp - Wikipedia

    en.wikipedia.org/wiki/Compact_fluorescent_lamp

    Dimmable CFLs are not a 100% replacement for incandescent fixtures that are dimmed for "mood scenes" such as wall sconces in a dining area. Below the 20% limit, the lamp may remain at 20% or flicker or the starter circuitry may stop and restart. [60] Above 80%, the bulb may operate at 100%.

  3. Fluorescent-lamp formats - Wikipedia

    en.wikipedia.org/wiki/Fluorescent-lamp_formats

    The T indicates that the shape of the bulb is tubular, and ... Retrofit replacement for 2 ft T12 20 W T8: 1.0, 25 ... 34-watt energy-saving F40T12 fluorescent lamps ...

  4. Solar lamp - Wikipedia

    en.wikipedia.org/wiki/Solar_lamp

    In general, the efficiency of photovoltaic energy conversion is limited for physical reasons. Around 24% of solar radiation of a long wavelength is not absorbed. 33% is heat lost to surroundings, and further losses are of approximately 15-20%. Only 23% is absorbed, which means a battery is a crucial part of solar lamp.

  5. Solar inverter - Wikipedia

    en.wikipedia.org/wiki/Solar_inverter

    Internal view of a solar inverter. Note the many large capacitors (blue cylinders), used to buffer the double line frequency ripple arising due to single-phase ac system.. A solar inverter or photovoltaic (PV) inverter is a type of power inverter which converts the variable direct current (DC) output of a photovoltaic solar panel into a utility frequency alternating current (AC) that can be ...

  6. Phase-out of incandescent light bulbs - Wikipedia

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

    The Canadian federal government banned the import and sale of 75- and 100-watt incandescent bulbs, effective 1 January 2014. On 1 January 2015, 40- and 60-watt bulbs were also banned, although there are exceptions for oven lights, decorative lamps (light bulbs), appliance bulbs, 3-way fixtures, chandeliers and rough service/utility bulbs. [86]

  7. Hydrargyrum medium-arc iodide lamp - Wikipedia

    en.wikipedia.org/wiki/Hydrargyrum_medium-arc...

    With HMI bulbs, color temperature varies significantly with lamp age. A new bulb generally will output at a color temperature close to 15,000 K during its first few hours. As the bulb ages, the color temperature reaches its nominal value of around 5600 K or 6000 K. With age, the arc length becomes larger as more of the electrodes burn away.

  8. Centennial Light - Wikipedia

    en.wikipedia.org/wiki/Centennial_Light

    The Centennial Light was originally a 60-watt bulb, but has since dimmed significantly and is now as bright as a 4-watt bulb. [7] [8] [9] The hand-blown, carbon-filament common light bulb was invented by Adolphe Chaillet, a French engineer who filed a patent for this socket technology. [10]

  9. Halogen lamp - Wikipedia

    en.wikipedia.org/wiki/Halogen_lamp

    A 300 watt tubular halogen bulb operated at full power quickly reaches a temperature of about 540 °C (1,004 °F), while a 500 watt regular incandescent bulb operates at only 180 °C (356 °F) and a 75 watt regular incandescent at only 130 °C (266 °F). [13]

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