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It's a pain, but I think I got it right. I don't have graphing Fluke meters or anything fancy. And I can't measure V in and V out at the same time, but I think it's okay. Results for 4 different batteries are coming in pretty consistently. I have six leads with alligator clips on each end and I think I used 4 of them. It's a tangle.
 
I did some tests on a DX 6190 (NANJG AK-47) driver this weekend. Other than some difficulty in soldering the leads in on a very crowded board, this driver is great. Has the same mode groups as the NANJG 112A driver with soldering the stars, but seems more efficient with 3x7135 (though can't be run on AA like the 112A can). I was getting 85-92% efficiency on High. In 3 modes (LMH) the spacing of the modes is better than DX claims: I was getting 5%, 30%, and 100% based on current (I can't measure lumens). I put a review here:

http://budgetlightforum.cz.cc/node/310
 
yesterday evening was measurements time....here are the results...

Do note that will the dx 11836 Module driver 9red) is not of my liking it really performs with a 18650

4driversmeasure.jpg


enjoy, kostas
 
Thanks for sharing this kostas. Those efficiencies are a little tiny bit lower than I've got in my table, for some reason, but very impressive when out of regulation.

What's KD 4982? Do you mean SKU 2982, otherwise known as product ID 1640? That is the Kennan driver, version 3.

BTW, percentages should be 0-100, not decimals 0-1.
 
What's KD 4982? Do you mean SKU 2982, otherwise known as product ID 1640? That is the Kennan driver, version 3.

yes that is the one. the first version was pathetic regarding efficiency

BTW, percentages should be 0-100, not decimals 0-1

indeed. my bad
 
kosPap said:
yes that is the one. the first version was pathetic regarding efficiency
Click to expand...
The efficiency figures in my list for the original Kennan are quite respectable. Its efficiency was one of the reasons it was so popular. Also its versatility.

Your figure of 72% for the Kennan 3 isn't very good.
 
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brted said:
I did some tests on a DX 6190 (NANJG AK-47) driver this weekend. Other than some difficulty in soldering the leads in on a very crowded board, this driver is great. Has the same mode groups as the NANJG 112A driver with soldering the stars, but seems more efficient with 3x7135 (though can't be run on AA like the 112A can). I was getting 85-92% efficiency on High. In 3 modes (LMH) the spacing of the modes is better than DX claims: I was getting 5%, 30%, and 100% based on current (I can't measure lumens). I put a review here:

http://budgetlightforum.cz.cc/node/310
Click to expand...

What do you mean it can't be run on AA? I'm thinking of using this board with three D alkalines in a 3D mag...
 
TorchBoy said:
I've just seen Shining Beam has listed a 3 mode, 14 mm diameter driver, filling a gap in the budget driver market for that combination - at $5.45 it's "just" a bit less expensive than a GDuP. http://www.shiningbeam.com/servlet/the-176/**NEW**-3-dsh-Mode-Regulated-Circuit/Detail
Click to expand...

I may have to get one and see what happens at 3.0V. Most of my mods in need of a boost circuit are 2-cell, rather than single cell.

If it goes :poof: I'll just chalk it up to experience.
 
TorchBoy said:
I've just seen Shining Beam has listed a 3 mode, 14 mm diameter driver, filling a gap in the budget driver market for that combination - at $5.45 it's "just" a bit less expensive than a GDuP. http://www.shiningbeam.com/servlet/the-176/**NEW**-3-dsh-Mode-Regulated-Circuit/Detail
Click to expand...

Hang on a minute, that looks a lot like the old RV7 board? There was a similar board on DX.

900mA output from one 1.2V cell - That would be very nice.

Edit - I found the DX driver that is similar here sku 7880
 
Last edited:
TorchBoy said:
17 mm though - puts it in a different market. But... it has LDCH on the bottom as well. :thinking: What does that mean?
Click to expand...


"LDCH" - you beat me to it!! I was about to post that fact. :mecry:

RE : Board Dia, a good point, the DX board can be cut down a bit, and the RV7 board was "Size: 16x6.5mm (L1P size); Diameter can be trimmed down to 14.5mm"

History and funny letters aside, it looks good, and has a nice low,med,high set up.



 
aha1 the driver has changed!

RV7 was a board that was sold by a former forum member...it had true 700mA output. The DX countrerpart had 350mA at least the latter versions...

Off to buy the new version!
 
kosPap said:
aha1 the driver has changed!

RV7 was a board that was sold by a former forum member...it had true 700mA output. The DX countrerpart had 350mA at least the latter versions...

Off to buy the new version!
Click to expand...

Maybe RV7 sold his design to Shining Beam ? :tinfoil:

BTW the DX counter part has new pics too. sku 7880 looks very much like the Shining Beam new driver. Could you have a look with you expert eyes and compare the two, I don't know enough about electronics to be able to tell if they are exactly the same.
 
Good gravy! Google has indexed my last post above already! I did a search for "ldch led driver" (without quote marks) and it was quoted in the first result.

I also found a mention by someone on CPF that LDCH is the maker of the driver boards.
 
I've just added a 17+ option in the mode selection menu, to bring up just the drivers with three groups and 17-20 modes. It made a search I was doing a little easier, and it makes me wonder what else could be similarly tweaked.
 
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