Poof

[viking]

Ok... so I believe I know what happened... but I would like to know what you think happened... I have a microboost driver set at 1.7a with an M140 diode... and just because I am still waiting on my battery to arrive, and just to test out the new diode... I attached 3AA batteries. I ran it for around 30 seconds before I heard "POP". I immediately switched off power and noticed that one of the batterie's end cap popped open and a green liquid was oozing out...
:can:

 

[Blord]

Did you hooked something to the driver output ? The boost drivers mustn't run without a test load or a diode.

 

[viking]

I believe I mentioned that it was connected to an M140 diode:huh:

 

[grainde]

If you ran it through the driver you should be ok. Sounds like you exceeded the max current the batteries could handle. Did you also have the diode in a module or better still a heat sink?

Edit: Blord was asking if you ran the diode directly off the batteries (ie by passed the driver) or whether you ran the diode through the driver.

 

[viking]

The diode was in a module placed into an aluminum heatsink with thermal paste. Thats what I believe happened... the current hungry driver taxed the poor AA batteries beyond their capability...
lol! so much to learn with this new obsession of mine!

 

[Blord]

You already hooked up to the diode. I misread you are waiting for the new battery and not the new diode.

 

[viking]

Yeah, that's another thing I'm trying to learn... being more specific... Yes, I had the M140 diode attached to the microboost driver which is set at 1.7a. I had the driver connected to 3AA batteries. Thanx for your replies!

 

[Cyparagon]

What kind of AAs? Alkaline electrolyte is clear, not green.

 

[viking]

Alkaline... I had my goggles on AND I'm color blind! lol... so...

 

[ryansoh3]

Any pics?

Also, did you notice that the batteries got hot?

If not, it might not have been that the batteries were heavily stressed. Defective, perhaps?

Cheers! :beer:

 

[Ears and Eggs]

Do you any pictures of the batteries/setup? I have never had a green liquid come out of any of my batteries before. Unfortunately a couple days ago I had 3 D batteries burst and spill a light brown goo everywhere. Got all over my hands and stained a carpet. They were just normal generic alkaline batteries though.

 

[lasersbee]

I thought this was a gay Thread from the title....
IIRC in the UK a Poof is a homosexual....:crackup::crackup:

NVM.... carry on..:beer:


Jerry


You can contact us at any time on our Website: J.BAUER Electronics

 

[viking]

So I made a quick video... of me doing a current measurement... The heatsink is barely warm, the batteries are cool to the touch... however, the diode goes into blink mode after a very short time... I am using 3 alkaline D batteries. :shhhI know.... I know... I am still waiting on my good battery...)

So what do you think is causing the diode to go into blink mode? It has to be the batteries... right?

Laser Current Test - YouTube

 

[DTR]

The driver is overheating and bouncing off the thermal protection.

Did you heatsink it like in this thread?

http://laserpointerforums.com/f42/1-7a-microboost-mod-72805.html

 

[viking]

nope
About to try it when my thermal paste dries!

thanks, DTR, as always!!!

The driver is overheating and bouncing off the thermal protection.

Did you heatsink it like in this thread?

http://laserpointerforums.com/f42/1-7a-microboost-mod-72805.html