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Thread: how much are the leds in inova x-5 overdriven

  1. #1

    Default how much are the leds in inova x-5 overdriven

    Wondering how much these guys are over driving these suckers Any regulation or resistors used? thanks in advance

  2. #2
    Flashaholic* Quickbeam's Avatar
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    Default Re: how much are the leds in inova x-5 overdriven

    AFAIK, no resistors. I am trying to remember off the top of my head, but I think the voltage drop was 5.76 something volts across the head (all 5 LEDs) and over 260 mA = over 52 mA per LED. Pretty badly overdriven. Half-life of the LEDs would be expected to be 2000 to 4000 hours at this rate of current draw.

  3. #3

    Default Re: how much are the leds in inova x-5 overdriven

    those poor little LED's!

  4. #4

    Default Re: how much are the leds in inova x-5 overdriven

    <BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by Quickbeam:
    ...Half-life of the LEDs would be expected to be 2000 to 4000 hours at this rate of current draw.<HR></BLOCKQUOTE>

    Does "half-life" in this context mean the point at which the LEDS are only putting out half the amount of light per volt than when new?

  5. #5
    *Retired* The_LED_Museum's Avatar
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    Default Re: how much are the leds in inova x-5 overdriven

    Has anyone butchered one of these to see if there is a resistor inside or not?

  6. #6
    Flashaholic* Sean's Avatar
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    Default Re: how much are the leds in inova x-5 overdriven

    I think there must be some sort of resistor in it because if you run it at 4.5v it's no brighter than a photon II. [img]images/icons/shocked.gif[/img] Plus, the LED's have a good heatsink (the bezel).

    So something is keeping them from running at "full power" unless you apply the full 6v.

    But I'm not tearing mine apart to find out! [img]images/icons/smile.gif[/img]

    Hey Craig, I hear the "Punnishment Zone" could tear up the X5, then we could find out what's inside! [img]images/icons/tongue.gif[/img] [img]images/icons/tongue.gif[/img] [img]images/icons/grin.gif[/img]

  7. #7
    Flashaholic* Quickbeam's Avatar
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    Default Re: how much are the leds in inova x-5 overdriven

    half-life = time before LEDs put out 1/2 the light from when they are new.

    I cannot find any way to open the bezel.

    Don't assume that the LEDs are heatsinked to the bezel... you don't know how their held in there..... Maybe heat conductive epoxy, maybe not! I never received a response from Innova regarding this.

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