We seem to have gotten a bit off track...
Quote:
Originally Posted by wwest
1W 140 degree StrawHat LED operating at 200 milliamps using a 3W external current limiting resistor.
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First off, the lighting on your clock looks pretty damn good - nice and even and well distributed. I do have a couple questions (and assumptions).
Just so I'm clear on what you did with this, you mounted your 1W strawhat LED in a BA7 base from which you removed the bulb, externally wired in your 3W resistor and diode. Is that correct?
-Having the resistor in the base creates too much heat (at the .2 A rating) and fries the LED. Having the resistor outside the base is sufficient to allow heat dissipation?
-I figure you're likely using a 47 ohm resistor? Would using a higher than 3W resistor, like a 5W, gain anything? More resistant to heat?
-How much difference in light output between 100, 200 and 300 mA?
-How far extended from the base did you mount the LED? Obviously one is limited by the amount of space inside the gauge, but would you want it out as far as possible?