Laser pointer discussion. Read/write reviews of laser pointers and laser pointer companies. Learn about all types of laser pointers and lasers





Welcome to Laser Pointer Forums! If you are looking for a laser pointer or want to compare different laser pointer companies, you may want to check out the LPF Laser Pointer Company Database. The link will open in a new window for your convenience.








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes
Laser Technology Laser Pointer Parts Lasers by Wavelength
Top 10 Laser Pointer Companies Laser Pointer Company Database Visible Beam Laser Pointers


One laser store meets all your needs

























Go Back   Laser Pointer Forums - Discuss Laser Pointers > Lasers > Experiments & Modifications



LPF List of Laser Pointer Companies (link opens new window)



Reply
 
LinkBack Thread Tools Display Modes
Old 09-30-2007, 07:49 PM #1
Junior Member
 
Join Date: Sep 2007
Posts: 8
Rep Power: 0
Bionuker is a name known to allBionuker is a name known to allBionuker is a name known to allBionuker is a name known to allBionuker is a name known to allBionuker is a name known to all
Bionuker Bionuker is offline
Junior Member
 
Join Date: Sep 2007
Posts: 8
Rep Power: 0
Bionuker is a name known to allBionuker is a name known to allBionuker is a name known to allBionuker is a name known to allBionuker is a name known to allBionuker is a name known to all
Default DVD Diode question.. (use driver or not?)

Hi there .

I want to make a DVD Burner handheld laser...
I just got my 16x LG DVD burner, and I have a housing for my module. The module (dealextreme.com sku.5914 - Can't post any links -_-) I ordered seems pretty OK. Can I use this one with a 3,6v power source, without frying my 250mw diode?
Or do I have to build a driver? I don't get it.. It's all very confusing. Some people say "use the driver from the module", and some people don't.

Regards, Bionuker.


Bionuker is offline   Reply With Quote







LPF List of Laser Pointer Companies (link opens new window)







Old 09-30-2007, 08:07 PM #2
Class 2 Laser
 
Join Date: Aug 2007
Posts: 334
Rep Power: 11
Phazonx is on a distinguished road
Phazonx Phazonx is offline
Class 2 Laser
 
Join Date: Aug 2007
Posts: 334
Rep Power: 11
Phazonx is on a distinguished road
Default Re: DVD Diode question.. (use driver or not?)

trust me! you need a driver.


I though that would not need one at all, but I came here and everyone says that you need one.



ask Daedal. He can sell you one. I bought one from him and I got it 2 days after I bought it.
Phazonx is offline   Reply With Quote
Old 09-30-2007, 08:10 PM #3
Kenom's Avatar
Class 4 Laser
 
Join Date: May 2007
Posts: 5,629
Rep Power: 304
Kenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond repute
Send a message via MSN to Kenom
Kenom Kenom is offline
Class 4 Laser
Kenom's Avatar
 
Join Date: May 2007
Posts: 5,629
Rep Power: 304
Kenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond reputeKenom has a reputation beyond repute
Send a message via MSN to Kenom
Default Re: DVD Diode question.. (use driver or not?)

You most defenitly need a driver of some sort. without it your spelling certain doom for your diode.
Kenom is offline   Reply With Quote
Old 09-30-2007, 08:33 PM #4
Junior Member
 
Join Date: Sep 2007
Posts: 8
Rep Power: 0
Bionuker is a name known to allBionuker is a name known to allBionuker is a name known to allBionuker is a name known to allBionuker is a name known to allBionuker is a name known to all
Bionuker Bionuker is offline
Junior Member
 
Join Date: Sep 2007
Posts: 8
Rep Power: 0
Bionuker is a name known to allBionuker is a name known to allBionuker is a name known to allBionuker is a name known to allBionuker is a name known to allBionuker is a name known to all
Default Re: DVD Diode question.. (use driver or not?)

Thanks for the quick response!

If I make sure the current never gets higher then 3 volts.. Can the Diode still be fried?
Bionuker is offline   Reply With Quote
Old 09-30-2007, 08:36 PM #5
Gazoo's Avatar
Class 3B Laser
 
Join Date: Jun 2007
Location: Dallas Tx
Posts: 3,199
Rep Power: 180
Gazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond repute
Gazoo Gazoo is offline
Class 3B Laser
Gazoo's Avatar
 
Join Date: Jun 2007
Location: Dallas Tx
Posts: 3,199
Rep Power: 180
Gazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond reputeGazoo has a reputation beyond repute
Default Re: DVD Diode question.. (use driver or not?)

It doesn't matter, you need some way to limit the current and prevent voltage spikes. At the bare minimum you can get by with a resistor and capacitor, but the safest bet is to use Daedal's circuit.
Gazoo is offline   Reply With Quote
Old 09-30-2007, 08:36 PM #6
rog8811's Avatar
Class 3B Laser
 
Join Date: Jul 2007
Location: Berkshire UK
Posts: 2,749
Rep Power: 193
rog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond repute
rog8811 rog8811 is offline
Class 3B Laser
rog8811's Avatar
 
Join Date: Jul 2007
Location: Berkshire UK
Posts: 2,749
Rep Power: 193
rog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond reputerog8811 has a reputation beyond repute
Default Re: DVD Diode question.. (use driver or not?)

Its the current that kills it more than the volts, straight on 3 volts worth of batteries it could draw 500ma, that equals instant death to the LD.

Current control is everything for success.

Regards rog8811
__________________
See all of my videos on Vimeo
http://www.vimeo.com/4454150

Lots of tutorials and information on lasers
http://www.rog8811.com/

In the land of the blind the one eyed man..... is most likely holding the laser
rog8811 is offline   Reply With Quote
Old 10-01-2007, 02:18 PM #7
Class 1M Laser
 
Join Date: Aug 2007
Posts: 241
Rep Power: 11
Zarniwoop is on a distinguished road
Zarniwoop Zarniwoop is offline
Class 1M Laser
 
Join Date: Aug 2007
Posts: 241
Rep Power: 11
Zarniwoop is on a distinguished road
Default Re: DVD Diode question.. (use driver or not?)

Just a pet peeve here - Yes it's the current that kills a diode, but current regulation works by varying the voltage so that the current comes out to what you want. (V=I*R) So you can't really have the situation where the voltage is too high but the current is ok for the diode, unless you mean the voltage with no load (i.e. without the diode connected). If you measure the voltage across the diode, if your current is in-spec, then your voltage will be too.

Anyway...
Some LDs (like open-can types) may have a max operating voltage of 3V, while others (like the Senkat GB diodes and many 16x DVDs) are spec'ed for 2.5V. I ran an open-can diode from an 18x DVD directly off 2 AA batts for a couple of months (not continuously), getting away with it because of the internal resistance of the batteries. The same thing fried a different diode immediately. If I had used batts with lower resistance, it probably would have even fried my open-can LD. (I've since pulled it out of the mag-light and added a regulator.)
The BARE minimum would be a resistor. But the regulator approach varies less with temperature and allows using a higher source voltage to avoid immediately getting into battery-sag.
Using a DC-DC converter like in a Dorcy Mini may allow even longer battery life because less current is dissipated in heat, although the only current tweak you can do is by adding a resistor, and they you're back to heat dissipation again.



Zarniwoop is offline   Reply With Quote
Old 10-01-2007, 02:20 PM #8
Junior Member
 
Join Date: Sep 2007
Posts: 8
Rep Power: 0
Bionuker is a name known to allBionuker is a name known to allBionuker is a name known to allBionuker is a name known to allBionuker is a name known to allBionuker is a name known to all
Bionuker Bionuker is offline
Junior Member
 
Join Date: Sep 2007
Posts: 8
Rep Power: 0
Bionuker is a name known to allBionuker is a name known to allBionuker is a name known to allBionuker is a name known to allBionuker is a name known to allBionuker is a name known to all
Default Re: DVD Diode question.. (use driver or not?)

Thnx

So I can't use the on-board controller from the 5mW module? That would make things a hell of a lot easier.
Bionuker is offline   Reply With Quote
Old 10-01-2007, 02:48 PM #9
Class 2M Laser
 
Join Date: Aug 2007
Posts: 725
Rep Power: 66
LarryQ has a reputation beyond reputeLarryQ has a reputation beyond reputeLarryQ has a reputation beyond reputeLarryQ has a reputation beyond reputeLarryQ has a reputation beyond reputeLarryQ has a reputation beyond reputeLarryQ has a reputation beyond reputeLarryQ has a reputation beyond reputeLarryQ has a reputation beyond reputeLarryQ has a reputation beyond reputeLarryQ has a reputation beyond repute
LarryQ LarryQ is offline
Class 2M Laser
 
Join Date: Aug 2007
Posts: 725
Rep Power: 66
LarryQ has a reputation beyond reputeLarryQ has a reputation beyond reputeLarryQ has a reputation beyond reputeLarryQ has a reputation beyond reputeLarryQ has a reputation beyond reputeLarryQ has a reputation beyond reputeLarryQ has a reputation beyond reputeLarryQ has a reputation beyond reputeLarryQ has a reputation beyond reputeLarryQ has a reputation beyond reputeLarryQ has a reputation beyond repute
Default Re: DVD Diode question.. (use driver or not?)

Unfortunately, No..that driver won't drive anything much more than the <5mw diode.

It sure would be nice though..it's so small!!!

If this is your first laser mod..I highly reccomend you give the Mini Dorcy Mod a whirl!

http://www.laserpointerforums.com/fo...num=1181635652


The Mini Dorcy already has a nice circuit in it..and makes for a very easy / quick project for you.

The only thing you might want to add to the circuit might be a 47Uv 16 volt capacitor across the Laser diode leads just to absorb any volatage spikes when the laser is turned on.

A lot of people will say that even this is not needed...but I think an ounce of prevention could save you a Laser diode!

Good luck!!!
Lot's of great info around this forum!
LarryQ
LarryQ is offline   Reply With Quote
Reply





Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On











Loading








Green Laser Pointers by Category Blue Laser Pointers by Category Red Laser Pointers by Category
Yellow Laser Pointers by Category Violet Laser Pointers by Category Orange Laser Pointers by Category
Top Laser Pointers by Power - 1 Watt+ Top Laser Pointers by Power - 500mW+ Top Laser Pointers by Power - 250mW+
Laser Pointer Database High Power Laser Pointers Laser Pointer Diodes






Privacy Policy | Advertising Disclaimer | Terms of Use


 


All times are GMT. The time now is 09:39 PM.


Powered by: vBulletin
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Search Engine Friendly URLs by vBSEO
Privacy Policy | Advertising Disclaimer | Terms of Use
Copyright (C) 2017 Laser Pointer Forums, LLC