any thought's on this P7 driver

I've made a few already for sale & will be putting a few more up for sale soon. Doesn't deliver 2.8A on 3x C4500 NiMhs or 1 AW C Li-Ion. Does deliver 2.8A using 4x C4500 NiMhs.

I also built a 10xAMC7135 converter, again did not deliver 3.5A with the above battery configurations but it did deliver 3.2-3.3A on 4x C4500 NiMhs. This will be up for sale too.

As in Drewfus' review on AMC7135 boards, they must be in their small window of volatge range to deliver the rated current.

If you're interested in getting one without having to wait for KDs shipping, PM me. I have the boards, just need to assemble them.

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Doesn't deliver 2.8A on 3x C4500 NiMhs or 1 AW C Li-Ion. Does deliver 2.8A using 4x C4500 NiMhs.
i'm useing d cell 10000mAh in a 3d m*g what sort of output would i see ?
 
Re: any thoughts on this P7 driver

Can someone please remind me how many volts a typical P7 wants at 2.8A?
 
Re: any thoughts on this P7 driver

Can someone please remind me how many volts a typical P7 wants at 2.8A?

C***I bin usually about 3.6V.

Ideal for use with 3 x C/D NiMH or 1 x C/D-LiION and AMC7135 based drivers. SSC P7 C***I bin even works great with one AW 18650 and a 2.4A driver (1A+1.4A or 1A multimode + 1.4A) in smaller flashlights like MRV's or Tiablos.

Sure, it might be possible to get differing results with these, but in my world they will deliver 320-330 mA per AMC7135 chip with a good power source. With a variation of 10% (I think the specs state that figure).

4 NiMH cells can be as high as 5.8 Volt. Not good with these drivers as they will get really hot.

Stefan
 
i'm useing d cell 10000mAh in a 3d m*g what sort of output would i see ?

Sorry I don't have any D10000 NiMhs on hand to test with so I'm not sure what the actual output will be.

With 1 AW C Li-Ion the max I get is 2.4A. With 3x C45000s I can't even get 2.4A. With 4x C4500s I do get exactly 2.8A max but as Stephan mentioned they do get hot & I recommend that they are heatsinked & potted seperate from the heatsink the P7 is mounted on similar to Texlite's TriFlupic Mag mod.

PM replied.
 
Re: any thoughts on this P7 driver

4 NiMH cells can be as high as 5.8 Volt. Not good with these drivers as they will get really hot.
Not many cells would hold that high for long. Many NiMHs won't hold a high enough voltage to stay in regulation with three cells and the LED wanting 3.6V.
 
Re: any thoughts on this P7 driver

Not many cells would hold that high for long. Many NiMHs won't hold a high enough voltage to stay in regulation with three cells and the LED wanting 3.6V.

Exactly my results. 3x C45000 NiMhs can not give the AMC7135s enough power to push out anything well over 1A.
 
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