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 > Tutorials, Help & Repairs



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



Reply
 
LinkBack Thread Tools Display Modes
Old 01-08-2010, 08:33 PM #17
creanzworld17's Avatar
Class 1M Laser
 
Join Date: Nov 2009
Location: PA, USA
Posts: 204
Rep Power: 9
creanzworld17 will become famous soon enoughcreanzworld17 will become famous soon enough
creanzworld17 creanzworld17 is offline
Class 1M Laser
creanzworld17's Avatar
 
Join Date: Nov 2009
Location: PA, USA
Posts: 204
Rep Power: 9
creanzworld17 will become famous soon enoughcreanzworld17 will become famous soon enough
Default Re: Help - Blue and Red Laser

My 20x LD died the instant hooked up. My luck i guess.


creanzworld17 is offline   Reply With Quote







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







Old 01-08-2010, 08:41 PM #18
Bluefan's Avatar
Class 3R Laser
 
Join Date: Aug 2009
Location: The Netherlands
Posts: 1,482
Rep Power: 62
Bluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond repute
Bluefan Bluefan is offline
Class 3R Laser
Bluefan's Avatar
 
Join Date: Aug 2009
Location: The Netherlands
Posts: 1,482
Rep Power: 62
Bluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond repute
Default Re: Help - Blue and Red Laser

Luck is not that common with laser diodes, very often the cause is an improper driver. Just post what driver you used and how in a suitable thread. Things like "I used a LM317 circuit, turned on the power and connected the laser diode" is an example how NOT to to it! LM317 drivers are a bit crude for laser diodes, the work fine when you only connect/disconnect with discharged caps and without power applied.

To answer question 4 of the first post: a direct connection to your multimeter in current more should be possible too, the driver should be a current source, so the current should be independent of the voltage and thus also work with a short (or a multimeter in this case). But a test load would be a better way.

Last edited by Bluefan; 01-08-2010 at 09:24 PM.
Bluefan is offline   Reply With Quote
Old 01-08-2010, 09:11 PM #19
creanzworld17's Avatar
Class 1M Laser
 
Join Date: Nov 2009
Location: PA, USA
Posts: 204
Rep Power: 9
creanzworld17 will become famous soon enoughcreanzworld17 will become famous soon enough
creanzworld17 creanzworld17 is offline
Class 1M Laser
creanzworld17's Avatar
 
Join Date: Nov 2009
Location: PA, USA
Posts: 204
Rep Power: 9
creanzworld17 will become famous soon enoughcreanzworld17 will become famous soon enough
Default Re: Help - Blue and Red Laser

Quote:
Originally Posted by Bluefan View Post
Luck is not that common with laser diodes, very often the cause is an improper driver. Just post what driver you used and how in a suitable thread. Things like "I used a LM317 circuit, turned on the power and connected the laser diode" is an example how NOT to to it! LM317 drivers are a bit crude for laser diodes, the work fine when you only connect/disconnect with discharged caps and without power applied.

To answer question 4 of the first post: a direct connection to your multimeter in current more should be possible too, the driver should be a current source, so the vurrent should be independent of the voltage and thus also work with a short (or a multimeter in this case). But a test load would be a better way.
Ok, thanks for quoting me, but that was a broad statement. Of course that's not all i do. i always discharge cap and then hook up power supply lastly. But this time my loc went to diode heaven.
creanzworld17 is offline   Reply With Quote
Old 01-08-2010, 09:24 PM #20
Bluefan's Avatar
Class 3R Laser
 
Join Date: Aug 2009
Location: The Netherlands
Posts: 1,482
Rep Power: 62
Bluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond repute
Bluefan Bluefan is offline
Class 3R Laser
Bluefan's Avatar
 
Join Date: Aug 2009
Location: The Netherlands
Posts: 1,482
Rep Power: 62
Bluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond reputeBluefan has a reputation beyond repute
Default Re: Help - Blue and Red Laser

Of course with a proper driver the diode can die too, from something as ESD (also easily avoided) to a diode that just can't take the usual current. It can die many ways, sometimes it indeed can be bad luck.
Bluefan 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 07:01 AM.


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