Driver for NUBM31 and for similar MDP chips sold on ebay/ali

[Light superglue]

PLease write your experience with this driver!

Mine was very bad - capacitor E5 burned after 1 min of charge. I guessed from start that boosting from 12V to 85-100V, 3A was a very bad idea of driver design at all - now I have a confirmation.

Likevii - what driver are you using for your set up combining three NUBM31??

 

[405nanoMatt]

I used the same driver and it burnt a capacitor and my diode within minutes! I would not recommend this driver.I now stick to my home built driver a uleego constant current constant voltage variable supply hooked up to a 12 to 48 v dc-dc boost which is fed by a 12 v dc wall transformer or 12 v sealed lead acid batteries for portability.All together this driver cost me 65$ plus the 300$+ I had spent on the nubm31 .A very expensive mistake/learning experience.For me at least.

 

[Giannis_TDM]

I used the same driver and it burnt a capacitor and my diode within minutes! I would not recommend this driver.I now stick to my home built driver a uleego constant current constant voltage variable supply hooked up to a 12 to 48 v dc-dc boost which is fed by a 12 v dc wall transformer or 12 v sealed lead acid batteries for portability.All together this driver cost me 65$ plus the 300$+ I had spent on the nubm31 .A very expensive mistake/learning experience.For me at least.

Mat, If you don't mind, you could send me said the driver and I can analyse why it failed and how shit its design is, I'll make a vid on it

 

[405nanoMatt]

Mat, If you don't mind, you could send me said the driver and I can analyse why it failed and how shit its design is, I'll make a vid on it

I will find it . Let me know where I should send it. Also I switched out said capacitor with a new one but when using it I have no adjustment on the pot it just runs full throttle .The capacitor is the only component I tampered with .Also this was after it had already malfunctioned and popped my nubm31 .It actually popped with a metal sounding ping !! Made me want to throw up seriously.These pictures are what I currently use to test diodes and to run my nubm38.I have a whole heat sink rig with a made up wire harness that I use for the 38 and 31 though.

 

[Light superglue]

What makes me bad about this driver is that it is the only one which pops up when you search NUBM31 or PLPM4L in ebay and it is not a cheap one - 60usd and everyone would think it to be the right and professional driver for these two MDP chips.

Meanwhile the BST900 booster from ali I use all time and it is working and not burning was only at 15-20eur. And I can use up to 60V input with it.

I will keep trying with other CC drivers to find something cheap and smaller but it will take time. I am also buying a 1000W variable resistor to use as test load instead of threat of burning 31T while testing on crappy drivers...

 

[Giannis_TDM]

What makes me bad about this driver is that it is the only one which pops up when you search NUBM31 or PLPM4L in ebay and it is not a cheap one - 60usd and everyone would think it to be the right and professional driver for these two MDP chips.

Meanwhile the BST900 booster from ali I use all time and it is working and not burning was only at 15-20eur. And I can use up to 60V input with it.

I will keep trying with other CC drivers to find something cheap and smaller but it will take time. I am also buying a 1000W variable resistor to use as test load instead of threat of burning 31T while testing on crappy drivers...

lol, a right and professional driver for such array would easily cost double that....

 

[405nanoMatt]

I remember seeing a hand canon 100 w pointer a member here made .Not the Styro one .anyway it looked in the pictures like they used this driver and it worked for them. Trinh houng I believe is the name.

 

[Light superglue]

Hi Giannis,

Have you got the bad driver from Matt? Do you still want them? I have purchased 2 more from diferent ebay suppliers and both do not work either (so they did not even burnt). I could send you all 3 if you want to play with them, Greece is not far from here...

 

[Giannis_TDM]

Hi Giannis,

Have you got the bad driver from Matt? Do you still want them? I have purchased 2 more from diferent ebay suppliers and both do not work either (so they did not even burnt). I could send you all 3 if you want to play with them, Greece is not far from here...

No, I haven't gotten the driver from Matt yet, And yes if you want to you could send me one of the broken ones and see where they fucked up.

 

[405nanoMatt]

Probably better to get them from Lightsuperglue because I like I said have tampered with mine already.

 

[Light superglue]

Well Giannis, then send me the private mail with postal address to send.

 

[Light superglue]

In the last months I have been searching to find decent drivers for NUBM31-38 MDPs and for this purpose I have studied some booster drivers from ebay. The similar looking pieces are sold on ali with different specs but I think they are all the same as hardware. After all this time I can say that I was mislead by those "purposed drivers for NUBM31" from techhood etc. and I have lost half a year thinking that these big things should be robust etc. compared to cheap and simple booster drivers from ebay but at the end those expensive big things were crap.

So I purchased a 1000W variable resistor and set it at 14 Ohms to use as test load in order not to risk burning NUBM31 array and tried several drivers with it: these were the small 250 and 400W rated booster drivers and the small driver for NUBM08 blocks found on ali.

Here are the comparative dimentions of all drivers one can use for NUBM31. I have not tested the last big one which different sellers promote both as 1200W and 1500W, but Smackitup has made a build with it recently...

At the result I was surprised to see that even the small 250W driver could do the job for 2 of the LD rows (42V at 3A) from 24V input very well and even from 12V input, however it was heating too much so I would not use it with 12 V input for long.

400W driver instead could do the job from 12V input without heating too much. But not every one - I received 3 of them: 2 worked well, one was defective but regarding the 6usd price...

Ali driver for NUBM08 can also be set to 42V, 3A and works from 24V input but 2 white ceramics resistors become hot pretty quickly. Looking at it makes me think that its board was originally designed for something different but later they soldered elements to the PCB to make NUBM08 driver in the same way as it must have been done with the quickly burning driver for NUBM31 I had so bad experience with...

In conclusion: a pair of these small drivers can be enough to drive NUBM31-38 blocks at 2s2p conection and the 400W driver may be even used alone if adjusted to 42V, 6A but I have not tried it yet...must wait for more of them to arrive.

 

[405nanoMatt]

The 250w driver is what I used for my makita 18v nubm34 build and it has worked great.

 

[toutan]

I asked trinh to make a 100W laser.
The laser he made is currently being used by others.
It has a very fast heat retention, so continuous use is 30 seconds.
I'm Japanese, so I'm not good at English.
The description may be strange.

 

[405nanoMatt]

I asked trinh to make a 100W laser.
The laser he made is currently being used by others.
It has a very fast heat retention, so continuous use is 30 seconds.
I'm Japanese, so I'm not good at English.
The description may be strange.

Nice laser ! The details are awesome.

 

[Light superglue]

This thread is about driver. What is the driver inside of ths nice big torch?