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 03-10-2011, 01:01 AM #1
Junior Member
 
Join Date: Mar 2011
Posts: 24
Rep Power: 0
icwiz is on a distinguished road
icwiz icwiz is offline
Junior Member
 
Join Date: Mar 2011
Posts: 24
Rep Power: 0
icwiz is on a distinguished road
Question pump diode driver for 200MW green?

Hello Everyone,

I recently purchased a 200mw laser from chinavasion. It came DOA. I tried to communicate with them, but basically it was a whole lotta nothing done. Eventually I just bit the bullet and decided to try to fix this myself.

I believe that the driver circuit is blown, and I want to try to make a new one. I have already built a drive for a 200mw red diode, so i got the basics down.

My problem is that I do no have any idea how much power the pump diode takes. I tried to search the forums but I could not find a post were some sort of guide was given to this type of problem.

Is there a way for me to find out? Or is there a method of trial and error that will work here?

Any ideas would be appreciated.

--ICWiz


icwiz is offline   Reply With Quote







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







Old 03-10-2011, 01:15 AM #2
Class 3R Laser
 
Join Date: Nov 2010
Location: Portugal
Posts: 2,470
Rep Power: 84
anselm has a reputation beyond reputeanselm has a reputation beyond reputeanselm has a reputation beyond reputeanselm has a reputation beyond reputeanselm has a reputation beyond reputeanselm has a reputation beyond reputeanselm has a reputation beyond reputeanselm has a reputation beyond reputeanselm has a reputation beyond reputeanselm has a reputation beyond reputeanselm has a reputation beyond repute
anselm anselm is offline
Class 3R Laser
 
Join Date: Nov 2010
Location: Portugal
Posts: 2,470
Rep Power: 84
anselm has a reputation beyond reputeanselm has a reputation beyond reputeanselm has a reputation beyond reputeanselm has a reputation beyond reputeanselm has a reputation beyond reputeanselm has a reputation beyond reputeanselm has a reputation beyond reputeanselm has a reputation beyond reputeanselm has a reputation beyond reputeanselm has a reputation beyond reputeanselm has a reputation beyond repute
Default Re: pump diode driver for 200MW green?

Hello and welcome!
Quote:
I have already built a drive for a 200mw red diode, so i got the basics down.
It's not quite the same, while most red's are case negative, green modules are case positive
so you need a driver that regulates on the negative side. A sink instead of a source, in a way.
The LM317 is no good for that, but there are equivalent ICs for negative side regulation,
I don't quite remember it's name just now.

DPSS efficiency can be around 20%, so you'd need around 1W IR for 200mW green.
I'd start around a current of 1/2A and carefully get more adventurous.

Good luck man!
__________________
I'm away from home and lasers until late July!
Kryton Groove switch workaround
Get your warning label stickers 0.90$ or less, depending on qty
The INDEX to the LPF
Add to it, and spam it from your signature, too!
Beware! Scams a-plenty, don't be a sucker!
___________________________
ATTENTION
This forum is fullfilled mit special electronische equippment. Fingergrabbing and pressing the cnoeppkes from the lasers is
allowed for die experts only! So all the “lefthanders” stay away and do not disturben the brainstorming von here working
intelligencies. Otherwise you will be out thrown and kicked anderswhere! Also: please keep still and only watchen astaunished the blinkenlights.
anselm is offline   Reply With Quote
Old 03-10-2011, 04:06 AM #3
Junior Member
 
Join Date: Mar 2011
Posts: 24
Rep Power: 0
icwiz is on a distinguished road
icwiz icwiz is offline
Junior Member
 
Join Date: Mar 2011
Posts: 24
Rep Power: 0
icwiz is on a distinguished road
Default Re: pump diode driver for 200MW green?

Quote:
Originally Posted by anselm View Post
Hello and welcome!

It's not quite the same, while most red's are case negative, green modules are case positive
so you need a driver that regulates on the negative side. A sink instead of a source, in a way.
The LM317 is no good for that, but there are equivalent ICs for negative side regulation,
I don't quite remember it's name just now.

DPSS efficiency can be around 20%, so you'd need around 1W IR for 200mW green.
I'd start around a current of 1/2A and carefully get more adventurous.

Good luck man!
Aaah Thanks a lot! That is very helpful. I had seen negative regulators when i was looking into how to use the LM317. I didnt understand what that meant, but now its making sense.

If the Diode is blown, then I guess i might have to try to actually pull it out, but im hoping it was just the driver.

I'll post back if I manage to get it working

Thanks again!

--ICWiz
icwiz is offline   Reply With Quote
Old 03-10-2011, 03:07 PM #4
Junior Member
 
Join Date: Mar 2011
Posts: 24
Rep Power: 0
icwiz is on a distinguished road
icwiz icwiz is offline
Junior Member
 
Join Date: Mar 2011
Posts: 24
Rep Power: 0
icwiz is on a distinguished road
Default Re: pump diode driver for 200MW green?

Oh, I forgot to ask, what would the voltage be?
icwiz is offline   Reply With Quote
Old 03-14-2011, 10:39 AM #5
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: pump diode driver for 200MW green?

The voltage across the diode or the voltage for the driver? The voltage across the diode is roughly 2.2V, the voltage for the driver wil depend on the type of driver.
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 12:22 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