Accident+ what would happen?

Newb · 06-02-2012, 10:16 PM

Today, I was building my 2w m140 laser today when my soldering connections broke and short- circuited the driver, luckily my diode wasn't hurt (just my luck...). My question is while I was building it I attached the diode to a 9v battery without thinking, only for about 5 seconds before I realized, but how much damage does this really do to the laser?

Blord · 06-02-2012, 10:23 PM

Not much. The 9V battery doesn't deliver enough current to kill the multiwatt diode.

Newb · 06-02-2012, 10:47 PM

Is it okay to use the 9v to power it?

Blord · 06-02-2012, 10:52 PM

With a 9V battery you will never get 2 Watt from a laser.
Actually I never tried direct drive with a 9V battery. Buy a new driver for the laser.

lasersbee · 06-02-2012, 10:59 PM

If you use a fully charged or fresh 9V Battery to directly
power your LD... you may very well damage the LD by the
initial inrush current spike...

Jerry

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

Newb · 06-03-2012, 02:42 AM

What if I use a used 9v battery? I tested it and it's outputting 8v at about 3a

grainde · 06-03-2012, 11:11 AM

Is it really worth taking the risk? As has been pointed out above, you are liable to destroy your diode if you get a current spike on start up....I wouldn't risk a 45$ diode messing around with a 9V battery!

Just buy a new driver, it'll be much cheaper than a new diode! Blord is selling them here for a fantastic price: $6 Mohgasm drivers. If you want 2 W then Id take the 2.2 and 1 ohm resistors to get 1.82 A, which should get your 2 W.

If you dont want to try soldering the resistors on, you can get completed ones here:
cajunlasers

Edit: 3A is too high for an M140 445 diode!

Newb · 06-03-2012, 01:36 PM

None of those drivers are enough to power my laser, but I do have a 500ma driver lieing around, do you think if I use the 1.25a driver and my 500ma driver. It would be okay to. Power my laser?

grainde · 06-03-2012, 01:52 PM

Now Im confused! If you have an M140 diode you should run it upto max 1.8 A. On blords page you combine 2 resistors..ie solder on the 2 resistors mentioned and together they give a total of 1.8A...

If you want less you just choose two others that give a sum total of less...

On the website (Cajunlasers) that sells complete drivers, they do have 1.8 A under "driver boards". Heres the link: Mohgasm 1.8A linear driver circuit [MOH1.8] - $14.99 : Cajunlasers Store

You can often combine drivers in parallel (flexdrives or benboosts etc), but that is dependent on the drivers. I would have to let someone else chip in here, because I dont have sufficient knowledge of electronics.

Newb · 06-03-2012, 02:03 PM

No I am saying I already have a 500ma driver, so if I buy the 1.25a driver from blord, which totals 1.75a would THAT be okay to run this diode?

lasersbee · 06-03-2012, 02:10 PM

It depends on the design of the Drivers...
You can not put two different manufactured Drivers in Parallel..

And even less desirable is to put two non identical Output current
drivers in parallel...

It is simple................
Get the proper driver and stop trying to put a band-aid solution
on your requirements.

You can easily run your 445 LD on 500mA with less beam power
and greatly extended life...

Jerry

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

grainde · 06-03-2012, 02:12 PM

Ok Im waiting on a reply from Blord, but again it will depend on your driver as to whether you can combine them.

You would still be better off buying a new driver, because if you buy a new one at 1.8 A it will cost the same as one at 1.25 A and youll have a spare 500 mA one for another build. Not to mention the added complexity of having to parallel the drivers, if it indeed can be done.

If you really want to run 2 in parallel you should provide details of your 500 mA driver and wait for one of the driver / electronics experts to comment.
Good luck

Edit: Thanks Jerry you just beat me to it!

Blord · 06-03-2012, 02:26 PM

The Mohgasm driver that I am selling is only good to 1.25A. For higher output you will need another board. The two resistors is placed ONLY on one board.

I see a lot of people want to make 2Watt lasers but that isn't easy. They think "I need 1.8A driver on the 445nm diode and voila a 2 Watt laser is born"
First not every 445nm diode can hit the 2 Watt mark
Second you will need at least a G1/G2 lens instead of the standard glass lens
Third heatsinking the diode and driver is critical.

grainde · 06-03-2012, 02:31 PM

Ok got it! Didnt realize that was the case, as Mohs linears usually go higher.
Thanks for clearing that up.

Blord · 06-03-2012, 02:36 PM

Moh drivers has two version just like the jib driver, FS: Jib Drivers 1.25A & 1.8A

I am selling the 1.25A version.
If I was selling the other version the price will be much higher

06-02-2012, 10:16 PM	#1
Newb Member Join Date: May 2012 Location: Massachussetts Posts: 49 Rep Power: 0	Accident+ what would happen? Today, I was building my 2w m140 laser today when my soldering connections broke and short- circuited the driver, luckily my diode wasn't hurt (just my luck...). My question is while I was building it I attached the diode to a 9v battery without thinking, only for about 5 seconds before I realized, but how much damage does this really do to the laser?

06-02-2012, 10:23 PM	#2
Blord Class 3B Laser Join Date: Dec 2007 Location: Belgium Posts: 4,743 Rep Power: 255	Re: Accident+ what would happen? Not much. The 9V battery doesn't deliver enough current to kill the multiwatt diode. __________________ 405nm 400mW S06J C6 445nm 3W Big Boy, 2.8W Dominator, 2.4W Steel Laser 450nm 240mW PL450 C6 473nm 80mW Lasever 520nm 55mW Skylaser PL520 532nm 821mW Skylaser PL532, 133mW Jetlasers Ti-B 589nm no yellow 635nm 70mW Sanyo SenTorch 638nm 175mW Ehgemus, 1W Rook 660nm 1216mW Skylaser PL660, 263mW LPC826 C6 685nm 33mW Fujitsu FLD6A2TK C6 780nm 150mW Dilda 808nm 640mW C6 C6 rainbow collection !! 5 Watt Ophir LPM

06-02-2012, 10:47 PM	#3
Newb Member Join Date: May 2012 Location: Massachussetts Posts: 49 Rep Power: 0	Re: Accident+ what would happen? Is it okay to use the 9v to power it?

06-02-2012, 10:52 PM	#4
Blord Class 3B Laser Join Date: Dec 2007 Location: Belgium Posts: 4,743 Rep Power: 255	Re: Accident+ what would happen? With a 9V battery you will never get 2 Watt from a laser. Actually I never tried direct drive with a 9V battery. Buy a new driver for the laser. __________________ 405nm 400mW S06J C6 445nm 3W Big Boy, 2.8W Dominator, 2.4W Steel Laser 450nm 240mW PL450 C6 473nm 80mW Lasever 520nm 55mW Skylaser PL520 532nm 821mW Skylaser PL532, 133mW Jetlasers Ti-B 589nm no yellow 635nm 70mW Sanyo SenTorch 638nm 175mW Ehgemus, 1W Rook 660nm 1216mW Skylaser PL660, 263mW LPC826 C6 685nm 33mW Fujitsu FLD6A2TK C6 780nm 150mW Dilda 808nm 640mW C6 C6 rainbow collection !! 5 Watt Ophir LPM

06-02-2012, 10:59 PM	#5
lasersbee Class 4 Laser Join Date: Sep 2008 Location: Quebec, Canada Posts: 14,507 Rep Power: 551	Re: Accident+ what would happen? If you use a fully charged or fresh 9V Battery to directly power your LD... you may very well damage the LD by the initial inrush current spike... Jerry You can contact us at any time on our Website: J.BAUER Electronics __________________ J.BAUER Electronics Home Page LaserBee Laser Power Meter Products meet your needs at affordable Prices: See them all here on LPF... LaserBee Power Meter products ALWAYS in Stock and discounted for LPF Members.... 2W LaserBee A Laser Power Meter LaserBee 2.5W USB LPM LaserBee 3.7W USB LPM Available on eBay:Check availability here... This banner is available to and can be copied/used FREE by any LaserBee owner Last edited by lasersbee; 07-01-2012 at 03:30 PM.

06-03-2012, 02:42 AM	#6
Newb Member Join Date: May 2012 Location: Massachussetts Posts: 49 Rep Power: 0	Re: Accident+ what would happen? What if I use a used 9v battery? I tested it and it's outputting 8v at about 3a

06-03-2012, 11:11 AM	#7
grainde Class 3R Laser Join Date: Jan 2012 Location: Poland (orig UK) Posts: 1,025 Rep Power: 89	Re: Accident+ what would happen? Is it really worth taking the risk? As has been pointed out above, you are liable to destroy your diode if you get a current spike on start up....I wouldn't risk a 45$ diode messing around with a 9V battery! Just buy a new driver, it'll be much cheaper than a new diode! Blord is selling them here for a fantastic price: $6 Mohgasm drivers. If you want 2 W then Id take the 2.2 and 1 ohm resistors to get 1.82 A, which should get your 2 W. If you dont want to try soldering the resistors on, you can get completed ones here: cajunlasers Edit: 3A is too high for an M140 445 diode! __________________ If you're new to lasers and want some info on how to build a laser, please read this thread: "I want to build a laser" Likewise, if you need info on which goggles to buy or where to get them, please read this thread: "Get some safety goggles now!" 100 mW PHR803T/AtMA linear in C6 700 mW S06J in C6 Cu module black anodised HS 2 W @ 1.5A 445 build in C6! --link-- 2.5+ W @ 1.8 A Cu module Saik 305 build--link-- 190 mW PL450B in Polished Phobos --link-- 5 mW 532 FireFly module --link-- 25 mW 532 Pen --link-- 520 mW 635 in Cu plated Phobos host --link-- 1 W 635 C6 built, killed....back on planning board 250 mW Laseerer 650 nm single mode AMC 380 mA driver C6 250 mW 780 C6 Moh linear @ 370 mA Last edited by grainde; 06-03-2012 at 11:19 AM.

06-03-2012, 01:36 PM	#8
Newb Member Join Date: May 2012 Location: Massachussetts Posts: 49 Rep Power: 0	Re: Accident+ what would happen? None of those drivers are enough to power my laser, but I do have a 500ma driver lieing around, do you think if I use the 1.25a driver and my 500ma driver. It would be okay to. Power my laser?

06-03-2012, 01:52 PM	#9
grainde Class 3R Laser Join Date: Jan 2012 Location: Poland (orig UK) Posts: 1,025 Rep Power: 89	Re: Accident+ what would happen? Now Im confused! If you have an M140 diode you should run it upto max 1.8 A. On blords page you combine 2 resistors..ie solder on the 2 resistors mentioned and together they give a total of 1.8A... If you want less you just choose two others that give a sum total of less... On the website (Cajunlasers) that sells complete drivers, they do have 1.8 A under "driver boards". Heres the link: Mohgasm 1.8A linear driver circuit [MOH1.8] - $14.99 : Cajunlasers Store You can often combine drivers in parallel (flexdrives or benboosts etc), but that is dependent on the drivers. I would have to let someone else chip in here, because I dont have sufficient knowledge of electronics. __________________ If you're new to lasers and want some info on how to build a laser, please read this thread: "I want to build a laser" Likewise, if you need info on which goggles to buy or where to get them, please read this thread: "Get some safety goggles now!" 100 mW PHR803T/AtMA linear in C6 700 mW S06J in C6 Cu module black anodised HS 2 W @ 1.5A 445 build in C6! --link-- 2.5+ W @ 1.8 A Cu module Saik 305 build--link-- 190 mW PL450B in Polished Phobos --link-- 5 mW 532 FireFly module --link-- 25 mW 532 Pen --link-- 520 mW 635 in Cu plated Phobos host --link-- 1 W 635 C6 built, killed....back on planning board 250 mW Laseerer 650 nm single mode AMC 380 mA driver C6 250 mW 780 C6 Moh linear @ 370 mA

06-03-2012, 02:03 PM	#10
Newb Member Join Date: May 2012 Location: Massachussetts Posts: 49 Rep Power: 0	Re: Accident+ what would happen? No I am saying I already have a 500ma driver, so if I buy the 1.25a driver from blord, which totals 1.75a would THAT be okay to run this diode?

06-03-2012, 02:10 PM	#11
lasersbee Class 4 Laser Join Date: Sep 2008 Location: Quebec, Canada Posts: 14,507 Rep Power: 551	Re: Accident+ what would happen? It depends on the design of the Drivers... You can not put two different manufactured Drivers in Parallel.. And even less desirable is to put two non identical Output current drivers in parallel... It is simple................ Get the proper driver and stop trying to put a band-aid solution on your requirements. You can easily run your 445 LD on 500mA with less beam power and greatly extended life... Jerry You can contact us at any time on our Website: J.BAUER Electronics __________________ J.BAUER Electronics Home Page LaserBee Laser Power Meter Products meet your needs at affordable Prices: See them all here on LPF... LaserBee Power Meter products ALWAYS in Stock and discounted for LPF Members.... 2W LaserBee A Laser Power Meter LaserBee 2.5W USB LPM LaserBee 3.7W USB LPM Available on eBay:Check availability here... This banner is available to and can be copied/used FREE by any LaserBee owner Last edited by lasersbee; 07-01-2012 at 03:30 PM. Reason: Spelling errors

06-03-2012, 02:12 PM	#12
grainde Class 3R Laser Join Date: Jan 2012 Location: Poland (orig UK) Posts: 1,025 Rep Power: 89	Re: Accident+ what would happen? Ok Im waiting on a reply from Blord, but again it will depend on your driver as to whether you can combine them. You would still be better off buying a new driver, because if you buy a new one at 1.8 A it will cost the same as one at 1.25 A and youll have a spare 500 mA one for another build. Not to mention the added complexity of having to parallel the drivers, if it indeed can be done. If you really want to run 2 in parallel you should provide details of your 500 mA driver and wait for one of the driver / electronics experts to comment. Good luck Edit: Thanks Jerry you just beat me to it! __________________ If you're new to lasers and want some info on how to build a laser, please read this thread: "I want to build a laser" Likewise, if you need info on which goggles to buy or where to get them, please read this thread: "Get some safety goggles now!" 100 mW PHR803T/AtMA linear in C6 700 mW S06J in C6 Cu module black anodised HS 2 W @ 1.5A 445 build in C6! --link-- 2.5+ W @ 1.8 A Cu module Saik 305 build--link-- 190 mW PL450B in Polished Phobos --link-- 5 mW 532 FireFly module --link-- 25 mW 532 Pen --link-- 520 mW 635 in Cu plated Phobos host --link-- 1 W 635 C6 built, killed....back on planning board 250 mW Laseerer 650 nm single mode AMC 380 mA driver C6 250 mW 780 C6 Moh linear @ 370 mA Last edited by grainde; 06-03-2012 at 02:14 PM.

06-03-2012, 02:26 PM	#13
Blord Class 3B Laser Join Date: Dec 2007 Location: Belgium Posts: 4,743 Rep Power: 255	Re: Accident+ what would happen? The Mohgasm driver that I am selling is only good to 1.25A. For higher output you will need another board. The two resistors is placed ONLY on one board. I see a lot of people want to make 2Watt lasers but that isn't easy. They think "I need 1.8A driver on the 445nm diode and voila a 2 Watt laser is born" First not every 445nm diode can hit the 2 Watt mark Second you will need at least a G1/G2 lens instead of the standard glass lens Third heatsinking the diode and driver is critical. __________________ 405nm 400mW S06J C6 445nm 3W Big Boy, 2.8W Dominator, 2.4W Steel Laser 450nm 240mW PL450 C6 473nm 80mW Lasever 520nm 55mW Skylaser PL520 532nm 821mW Skylaser PL532, 133mW Jetlasers Ti-B 589nm no yellow 635nm 70mW Sanyo SenTorch 638nm 175mW Ehgemus, 1W Rook 660nm 1216mW Skylaser PL660, 263mW LPC826 C6 685nm 33mW Fujitsu FLD6A2TK C6 780nm 150mW Dilda 808nm 640mW C6 C6 rainbow collection !! 5 Watt Ophir LPM Last edited by Blord; 06-03-2012 at 02:30 PM.

06-03-2012, 02:31 PM	#14
grainde Class 3R Laser Join Date: Jan 2012 Location: Poland (orig UK) Posts: 1,025 Rep Power: 89	Re: Accident+ what would happen? Ok got it! Didnt realize that was the case, as Mohs linears usually go higher. Thanks for clearing that up. __________________ If you're new to lasers and want some info on how to build a laser, please read this thread: "I want to build a laser" Likewise, if you need info on which goggles to buy or where to get them, please read this thread: "Get some safety goggles now!" 100 mW PHR803T/AtMA linear in C6 700 mW S06J in C6 Cu module black anodised HS 2 W @ 1.5A 445 build in C6! --link-- 2.5+ W @ 1.8 A Cu module Saik 305 build--link-- 190 mW PL450B in Polished Phobos --link-- 5 mW 532 FireFly module --link-- 25 mW 532 Pen --link-- 520 mW 635 in Cu plated Phobos host --link-- 1 W 635 C6 built, killed....back on planning board 250 mW Laseerer 650 nm single mode AMC 380 mA driver C6 250 mW 780 C6 Moh linear @ 370 mA

06-03-2012, 02:36 PM	#15
Blord Class 3B Laser Join Date: Dec 2007 Location: Belgium Posts: 4,743 Rep Power: 255	Re: Accident+ what would happen? Moh drivers has two version just like the jib driver, FS: Jib Drivers 1.25A & 1.8A I am selling the 1.25A version. If I was selling the other version the price will be much higher __________________ 405nm 400mW S06J C6 445nm 3W Big Boy, 2.8W Dominator, 2.4W Steel Laser 450nm 240mW PL450 C6 473nm 80mW Lasever 520nm 55mW Skylaser PL520 532nm 821mW Skylaser PL532, 133mW Jetlasers Ti-B 589nm no yellow 635nm 70mW Sanyo SenTorch 638nm 175mW Ehgemus, 1W Rook 660nm 1216mW Skylaser PL660, 263mW LPC826 C6 685nm 33mW Fujitsu FLD6A2TK C6 780nm 150mW Dilda 808nm 640mW C6 C6 rainbow collection !! 5 Watt Ophir LPM

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