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Old 04-02-2013, 07:57 PM #1
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Default Modify the DX buck drivers output

18V 5W Cree Circuit Board for Flashlights (16.8mm*5.5mm) - Free Shipping - DealExtreme

I want to buy this product and modify the output to 1.8amps. is it possible?

Thanks!


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Old 04-02-2013, 08:11 PM #2
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Default Re: Modify the DX buck drivers output

Yep. Just change the current sense resistor on the left there. 0.15 ohms should do the trick.
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Old 04-02-2013, 08:21 PM #3
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Default Re: Modify the DX buck drivers output

R450 to R500 (0.45 - 0.50 Ohm) can be paralelled with the existing R200 to give you 1.78-1.85Amps

Vref of the AX2002 IC is 0.25 , so you can calculate your own resistance required
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Old 04-03-2013, 04:10 PM #4
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Default Re: Modify the DX buck drivers output

Quote:
Originally Posted by sinner View Post
R450 to R500 (0.45 - 0.50 Ohm) can be paralelled with the existing R200 to give you 1.78-1.85Amps

Vref of the AX2002 IC is 0.25 , so you can calculate your own resistance required
where can i buy those kind of resistors? and how do i install them properly?

any1 here have already done it before?
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Old 04-03-2013, 04:16 PM #5
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Default Re: Modify the DX buck drivers output

This has been discussed before. Everything is explained here.
Driver Mod For up to 1.8amps with 2x 3.7v or 3.0v cells
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