Identify driver

I received today 2 drivers which are supposed to be 1050mA (3 x AMC7135). On one the regulators write HD7135 and on the other L7132... wtf???

I don't know but it looks like it was assembled by hand.

lol that also, you cannot really notice the soldering when looking at it, but after I took the closeup photos I thought my grandma can solder better than that :P. I really feel like resoldering the bad ones myself...

Probably the same thing. Different chip companies have slightly different writing on the chips. Those are some ugly drivers.

This is what I am wondering, is it the same chip, or something different? They are ugly, they also sell lots of 10 I think, and those ones look like they are machine soldered... but I have no need to buy 10... I will leave a public comment and bitch about the quality on the product page at DX.

Yeah.. even I did better when soldering AMCs onto a board, and I thought mine were ugly.

I guess the right one is only 960mA.. because if you look at the "normal" AMCs, they are rated 350mA and have 7135 written on them. KD V2 uses AMCs rated 380mA and have 7138 written on them.. you get the gist?

Mmm... yes I do, although I couldn't find any info on the net on these things... I suppose this calls for a replacement...

My two are also 7132. I bought them 2 months back.

They give 0,95A cold and 0,91-0,92A when hot

You have chips that say 7138? On those KD and not only, I have seen written 7135 and then the bin 38x underneath.

350*3 is 1050mA not 960mA, in order to get 960mA you need to have the 320mA binned chips.

I think they said 7138, but might be wrong. Cant get to the AMCs without taking my light apart..

Still, if you google a little, those AMCs are available in a lot of binnings. And when we look at nekdos comment, my theory seems correct.

Then you didn't get what you should have got, ie AMC7135 (for a total of 1050mA). Like NightCrawl noted earlier, the last 2 digits apparently show the mA's, so 32 is 320mA, x3 gives 960mA...

There are 7135 38x AMC chips that are 380mA they don't need to be 7138 (which I have not seen yet) that is why I asked NightCrawl about.

I have seen AMC7132 for sale before.

NightCrawl, theories need to be proven with facts :)

Should be easy for taz to test if he has a DMM.^^

Will do tomorrow. Need to replace my DMM's fuse as I damaged the fuse a few days ago and cannot measure current...

NightCrawl, real deal here, 7135 38L and 38K chips putting 380mA.

I was very curious when these chips appeared.

Sometimes facts aren't immediately available, in which case rumors and innuendos will do. Sounds like Hikelite is right about the 7132 and the chips are 320mA based on nekdo12's tests.

Hikelite look at mine, one says HD7135 - 1138 (so maybe this is 380mA?), and the other one is L7132 - 1006... so second number is not always indicative I suppose?

The best is to measure the current draw, because we can speculate much otherwise. Hopefully your leads don't drop the voltage too much and you get a reduced reading.

Taz. I am not sure of the driver is supposed to use 350mA Chips. DX title, description and photos say nothing about the chips used. The photos clearly prove that the supplier or DX or someone doesn't want the clients to know what chips are used since the names are "erased", so to say.

On DX, for the product you bought, one person says what chips they are as being a pro features (what he think they are) and then says the current draw is 580mA. What does that say. Other person says : "small, efficient for my needs, cheap and well enough made".

Most of the comments say that they are AMC7135, although those purchases were in 2010 & 2011. I think that DX got a very bad batch from the supplier, where not only the regulators used are different, but also the soldering is of poor quality, typical lack of QC of course. I showed them the photo and straight on they offered a replacement. I am awaiting a response from them regarding the bad quality.