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The_LED_Museum said:
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PhotonWrangler said:
Cool. I wonder if the 4-hour spec is for the lasers or the LEDs?
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Both the LEDs (except for the violet one) and the diode lasers should have lifetimes of 50,000 hours or more, unless one, the other, or both are significantly overdriven.
Let's have a look at those current consumption values; I should be able to determine the current draw of the LEDs anyway...BRB...ok, the LEDs use ~43.3mA apiece.
So they are overdriven, but not horribly so.
That violet LED will whirl down the {vulgar term for toliet} pretty quickly, but the blue ones ought to last for at least several thosand hours before they become visibly dimmer.
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Hmm... yeah, I agree that they're a little overdriven. Are they heatsinked? I wonder where the threshold for thermal runaway is for a non-heatsinked 5mm LED that's a little overdriven.
BTW, remember that 110v color-changing LED with the C-7 base? I was playing with a new style of C7 LED Christmas lights today, so I thought "hmm, must have internal regulation..." So like an idiot, I swapped one for a nearby string of regular C7 lights, and -BANG-
... a non-passive end-of-life characteristic. Or a noise-emitting diode (NED). /ubbthreads/images/graemlins/blush.gif /ubbthreads/images/graemlins/rolleyes.gif /ubbthreads/images/graemlins/blush.gif