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.

One laser store meets all your needs

 Laser Pointer Forums - Discuss Laser Pointers 10 >1mW Laser Modules
 User Name Remember Me? Password

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

09-04-2012, 11:36 PM #1
 Junior Member Join Date: Nov 2011 Posts: 7 Rep Power: 0
ttjarrett
Junior Member

Join Date: Nov 2011
Posts: 7
Rep Power: 0
10 >1mW Laser Modules

Hi Guys,

I am a very occasional poster, but I have been lurking around for a while.

Lets just say I had 10 >1mW laser modules that require 3V and 400mA to operate, if I connected these in series, would I need 10*400mA current supply to run the modules? If so and my calculations are correct, wouldn't I need 4A to run these modules?

Thanks,

Toby

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

09-05-2012, 01:45 AM #2
 Class 4 Laser Join Date: Sep 2007 Location: Wisconsin Posts: 9,142 Rep Power: 9321
Cyparagon
Class 4 Laser

Join Date: Sep 2007
Location: Wisconsin
Posts: 9,142
Rep Power: 9321
Re: 10 >1mW Laser Modules

You're thinking of parallel. In series it would be 400mA at 30V.

Application?
__________________
A problem well stated is a problem half solved.

09-05-2012, 05:44 AM #3
 Junior Member Join Date: Nov 2011 Posts: 7 Rep Power: 0
ttjarrett
Junior Member

Join Date: Nov 2011
Posts: 7
Rep Power: 0
Re: 10 >1mW Laser Modules

Quote:
 Originally Posted by Cyparagon You're thinking of parallel. In series it would be 400mA at 30V. Application?
Thanks Cyparagon!

I posed a while back about creating a laser "circle" that could be projected onto a surface and visible in bright sunlight. This is for a consumer product I am developing, and due to the nature of the laws here in Australia the best I can do I believe is use multiple laser modules to create a dot circle. I'm pretty sure a >1mW laser through a diffraction grating isn't going to be visible enough for my application.

30V at 400mA is a tall order I think as I need to drive the modules with commonly found (and smallish) batteries. I'm thinking that this application may not be within the realms of possibility given the laser power restrictions.

09-05-2012, 10:03 AM #4
 Class 4 Laser Join Date: Sep 2008 Location: Quebec, Canada Posts: 15,732 Rep Power: 41315
lasersbee
Class 4 Laser

Join Date: Sep 2008
Posts: 15,732
Rep Power: 41315
Re: 10 >1mW Laser Modules

Quote:
 Originally Posted by ttjarrett Hi Guys, I am a very occasional poster, but I have been lurking around for a while. Lets just say I had 10 >1mW laser modules that require 3V and 400mA to operate, if I connected these in series, would I need 10*400mA current supply to run the modules? If so and my calculations are correct, wouldn't I need 4A to run these modules? Thanks, Toby
I assume they are RED Laser modules...

If so... I find it difficult to see how a ~1mW or a bit greater
can draw 400mA at 3Volts...

40mA sounds a bit more logical...

Jerry

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

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 ready to ship

Also available on eBay:Check availability here..

Subsidary: Pharma Electronic Solutions

This banner is available to and can be copied/used FREE by any LaserBee owner

09-05-2012, 11:53 AM #5
 Junior Member Join Date: Nov 2011 Posts: 7 Rep Power: 0
ttjarrett
Junior Member

Join Date: Nov 2011
Posts: 7
Rep Power: 0
Re: 10 >1mW Laser Modules

Quote:
 Originally Posted by lasersbee I assume they are RED Laser modules... If so... I find it difficult to see how a ~1mW or a bit greater can draw 400mA at 3Volts... 40mA sounds a bit more logical... Jerry You can contact us at any time on our Website: J.BAUER Electronics
Hi Jerry,

No, it's a green laser (532 nm). I've attached the data sheet for the module I'm looking at purchasing. From what it says the "LD Operating Current" is 400mA.

I can see what you're saying, but I don't have enough knowledge about laser modules to agree or disagree. If a laser module acted just like a resistor (which I'm sure it doesn't), a 1mW module running at 3V would only need 0.33mA to run. There is a big difference between 400mA, 40mA and 0.33mA!

Perhaps my best bet is to buy some of these modules and whack a multimeter in between one and a power source.
Attached Files
 CNI S-GDL-532 Data Sheet.pdf (195.6 KB, 220 views)

Last edited by ttjarrett; 09-05-2012 at 11:55 AM.

 Thread Tools Display Modes Linear Mode

 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 OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

All times are GMT. The time now is 10:03 AM.

 -- DarkShadows V5 -- Responsive LPF -2562016 -- Default Style Contact Us - Laser Pointer Forums - Archive - Top