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led e27 15w

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led e27 15w Customers Reviews

  • Very nice light

    posted by Graven

    Very solidly build. Has a nice feel to it! Nice strong light beam produced. Has a great power factor when compared to other LED lights I have tested (this one is arond 90% PF which is excellent) In my testing it didn't get excessively hot.
    While I am awaiting a replacement I haven't been able to study it's internal design. However with a strong light output and great power factor I believe it's designed well internally. If I could find a use for these then I would definately buy more.
  • Confirming Measurements

    posted by apoapsis

    With 337 ohms (measured) in series, the following were measured: source voltage = 238-vac, voltage across resistor = 16.7 volts, lamp voltage = 222-vac.
    The above minor voltage differences attributed to rounding to closest integers on high scale and to heating of resistor during measurement.
    Calculated current from above = 49.55 ma. Calculated total heat power given off by resistors = 0.83 watts. [2 - 1/2 w resistors in parallel "should" handle 1 watt!]
    I will need to get better resistors and try this again.
    Since I did the measurements at close range, I could not compare the relative brightness with before. This will be handled on eventual before and after photos and observations.
    Still looked like a very bright bulb, at ~nominal voltage rating.
  • Bright bulb, nice light for eyes

    posted by kinietis

    Good big lamp, that shines brightly and gives much light to your room. Has plastic casing and it protects led's form dust or damages. Light is soft, not blue cold an can be used in living rooms.
    No thoughts - it serves as lamp and gives light, so what else?
    Good lamp, good color, much light, worth to buy

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