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greenLED said:
I have one of each of these:
1- old (original?) circuit (no epoxy in head), batt POS towards tail, powder coated (painted), 41hrs runtime, "Task"
2- newer (?) circuit with black dot, batt POS towards top, same finish as 1, 41 hrs, "Task"
3- same circuit as 3 (??), no black dot, anodized, 41 hrs, "Task"
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I've seen at least three Infinities, with at least as many different circuits. <ul type="square"> [*]The original powder-coated, battery upside-down version with the metal-spring (-)contact in the flashlight head, [*]a 2nd version with a "right-side up" battery and a solder-plated circular (+)contact for the battery on the circuit board, [*]then a 3rd where that positive contact was covered with a resistive ink, the "black dot" version.[/list]
The original Infinity was unregulated: it pulled LOTS of current from a new battery, dropping off very quickly in draw (and light output) as the battery was drained. There were at least two slightly different converter circuts, plus a 3rd if you count the version with the black dot serving as a series resistor. The three had quite different outputs and current draws vs: battery voltage.
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4- Zetex circuit, anodized, 25 hrs, "Ultra"
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I'm not sure how the Ultra is marketed, but mine fell to a few percent output after about 12 hours' runtime, falling off over a fairly short interval -- a few minutes? This 'moon' mode was pretty steady, and looked like it might go a long time, but I didn't test long enough to find out. I think Runtime Roy got and posted similar results.
Ah yes, here it is:
Run-Time Plot - CMG Infinity Ultra-G
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4.1 Koala's LUXI /ubbthreads/images/graemlins/wink.gif
5- Gerber's new style
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The new Gerber style is the only one I haven't seen -- I'll have to get one. The Infinities are great lights.
Best,
Jamaica