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Increasing Current on a Drop-in Module

Helios

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Joined
Jan 7, 2011
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Is there a way to bump up the current on a drop in module? I am ordering a XM-L T6 drop-in but the drop ins are usually under power. Im guessing the power can be modified by changing a resistor but I am no electronics wizard so I was hoping someone here might be.
 





Joined
Dec 29, 2009
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Depends on the driver. Quite honestly, drop-ins aren't meant to be high performers. They sacrifice proper heatsinking for convenience.

You can find amc7135 based boards for pretty cheap. better drivers will be more expensive. AMC7135 are paralleled for higher currents; a single chip will sink 350mA. 2 chips will sink 700mA, and so on.
 
Joined
Feb 5, 2008
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Also take note that AMC7135 chips HATE heat. They are to be very well heatsink in order to avoid current sagging.

Which happens under 5 seconds in most cases of 2x lithium ions + 4-5 V of load drop.

My advice, bucking driver meant for LED.

They can be easily modified if they do not come with trimmer potenciometers already.
 




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