Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

LPF Donation via Stripe | LPF Donation - Other Methods

Links below open in new window

ArcticMyst Security by Avery

my first red laser project-read please!

geo-r

0
Joined
Feb 25, 2008
Messages
70
Points
0
Hi!
 I have a dvd-rw model nec ND-2500A.Its a 8x dvd writer.i want to ask if anyone knows the current i give to this diode without to damage it and also how many mw i can take out from it.
Thanks.

i attach a photo.sure is this diode?
 

Attachments

  • 24102008703.jpg
    24102008703.jpg
    132 KB · Views: 711





diachi

0
Joined
Feb 22, 2008
Messages
9,700
Points
113
Re: red laser project

You won't get much from an 8X 100mW tops is my best guess. Dunno what current though ...

-Adam
 

iewed

0
Joined
Feb 3, 2008
Messages
797
Points
0
Re: red laser project

I would say start a 50mA and then slightly increase the current until your able to light a match from close range. It's not very effective, but without an LPM, or any data charts it's going to be hard to give a reasonable estimate.
 

geo-r

0
Joined
Feb 25, 2008
Messages
70
Points
0
Re: red laser project

i need a special circuit to suply the diode?a resistant mabe its not enough? :-?
 

Switch

0
Joined
Dec 9, 2007
Messages
3,327
Points
0
Re: red laser project

geo-r said:
i need a special circuit to suply the diode?a resistant mabe its not enough? :-?
It would be prefered, yes. :p
 

ArRaY

0
Joined
Jul 18, 2008
Messages
281
Points
0
Re: red laser project

Sorry to say that, but it sucks that no-one seems to read the great FAQs that are around here...
 

geo-r

0
Joined
Feb 25, 2008
Messages
70
Points
0
Re: red laser project

ArRaY said:
Sorry to say that, but it sucks that no-one seems to read the great FAQs that are around here...
thanks.where can i find the great FAQs?any info about ma for the diode and circuit and mw?
 
Joined
Aug 30, 2008
Messages
6,891
Points
83
i don't think anyone really knows....this being your first attempt at building a laser, you'll prob kill the diode anyways, when that happens, run over to stonetek and buy a 16x diode and run it at 250mA.
 
Joined
Jul 17, 2008
Messages
601
Points
0
Your probably going to have to buy a Flex drive and find a good current yourself, the laser community usually builds lasers with 20X diodes. So you may just be better off buying a 16X diode, there is an abundance of knowledge on them here.
 
Joined
Jul 31, 2008
Messages
108
Points
0
Around 50mw at 2.9v turned mine into an LED. I think its an LED now will post pics and stuff in a new post
 

geo-r

0
Joined
Feb 25, 2008
Messages
70
Points
0
jonrobertd said:
Around 50mw at 2.9v turned mine into an LED. I think its an LED now will post pics and stuff in a new post
I use a resistant and i give 140ma to the diode for a few seconds and is still work but it looks a bit weak.I dont know how many mw pump out!
 




Top