Suutable driver for LPC-840

[TinLethax]

Hello .Im new here and have question about the suitable driver for LPC-840 diode. I saw on Alaskan replied on the thread
https://laserpointerforums.com/f50/mitsubishi-lpc-826-a-99171.html
He told that LPC-840
"Working Current: <320-355mA
And Working Voltage:2.4-3.1V"
Any suggestions for the driver ? (eBay link please ).Thanks

 

[TinLethax]

Thanks a lot for guiding

 

[TinLethax]

Did you ever have LPC840? I have one but died (ESD killed TT).
I saw the mitsubishi logo near the connection pins .This is genuine? Also see the photo I attached.

 

[TinLethax]

Here's another thread with photo's of the different low power red laser diode markings:

https://laserpointerforums.com/f63/ebay-laser-watchdog-group-101527.html



That marking appears to be the lower power diode to me.

I ordered this thing from existotem in eBay ...

 

[TinLethax]

Some sellers know the difference, some don't. Hard to say, I'd contact him after studying those markings closely in the photo's to be sure first, or you could use a lab power supply (with a heat sink on it) and see if it produces the power Styropyro outlined for his diode. If I am following that thread properly, his results were from a lower power diode, not the 840 and it failed early.

Edit: Oh, you probably don't have an LPM! The one I had fried, the seller sold me something far lower power than the 840.

I cant afford on LPM .too expensive for me lol .

 

[TinLethax]

Im lived in Thailand so If I order the genuien from US .The shipping cost is more that the LD I would like to buy

Edit:I had remember that my old LPC 836 is weaker with this diode at same current and voltage .

 

[TinLethax]

Did you know some red LD for >250mW for cheap (except the LPC series .I already known dem).

 

[trinh hong phuoc]

About driver,you can choose ax2002 driver,just replace R2 on broad,0,6ohm for R2 is okay,current is 410 ma(price is 6 usd)
About diode,i think ml101u29-25 is OK,it can reach 400mw with g2 ,only 3usd/1pcs,you should buy 5 or 10,hahaha
Good luck for build

 

[TinLethax]

About driver,you can choose ax2002 driver,just replace R2 on broad,0,6ohm for R2 is okay,current is 410 ma(price is 6 usd)
About diode,i think ml101u29-25 is OK,it can reach 400mw with g2 ,only 3usd/1pcs,you should buy 5 or 10,hahaha
Good luck for build

Im still in doubt about the working current and voltage to get more than 200mW for the U29(I have two of them xD ).

 

[TinLethax]

Oh .thanks a lot ;D

 

[trinh hong phuoc]

Im still in doubt about the working current and voltage to get more than 200mW for the U29(I have two of them xD ).

I runed it at 500ma,not die

 

[TinLethax]

How about the voltage ?

 

[trinh hong phuoc]

You can search datasheet,

 

[paul1598419]

The Vf on the LPC-840 is ~2.3 volts. It is low like most red diodes. Another good reason to use a buck driver. You can get by with a single Li-ion battery. I have one of these running at 385 mW at 400 mA using a continuous ground adjustable X-Drive from lazeerer. I use a single Panasonic 3400 mAh 5 amp drain battery and it has been pumping out photons for several years now.

 

[TinLethax]

Cool .worth to play with it

 

[hakzaw1]

suubbing this thread...