(Topic ID: 180019)

leds getting dim over time

By tlzavala1

7 years ago


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    #43 6 years ago

    In the market for some LED bulbs soon. I've seen a lot of what's out there, not with just pinball bulbs but any type of LED bulb for automotive applications, flashlights, etc. As barakandl said, a lot of times they're they're using too low of a resistor value. Great that it's bright, but it's short-lived when it's killing the LED over time. A lot of times on the candelabra, multi-led style designs they're using a single resistor to set current and the leds are wired in parallel.. not a great design either, since leds have different forward voltages even if from the same lot number from the factory. Eventually this style can fail as well, especially if the resistor(s) used are too low a value.

    I'd like to buy solid bulbs that will last. Not sure if I should just order a sample, tear them open and find out for myself what resistor values are used.. doubt I'll get answers from the LED manufacturers on bulbs I'm interested in so this is probably a better way to go about it. Order what other people are saying should last, do one machine, tear the bulb open and get a better idea. No problem forking over money with whatever designs are good no problem, but honestly tired of throwing good money for bad on LED products that don't last.

    I now only use PHILIPS brand lightbulbs in the house. Tried CREE, Utilitech in the past. All these LED products are supposedly supposed to last so much longer than incandescents.. 10-20 years. And so much of it is failing due to bad design. I've had good luck with PHILIPS, they must know what they're doing and get all my business on regular household bulb products.

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