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 > Drivers, Test-load, Power Supply, & Batteries



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



Reply
 
LinkBack Thread Tools Display Modes
Old 04-11-2011, 04:42 PM #1
Class 1M Laser
 
Join Date: Feb 2011
Location: 20 Miles South of the Nations Capital - in Maryland, close to the Potomac River
Posts: 130
Rep Power: 14
Cad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to behold
Cad602 Cad602 is offline
Class 1M Laser
 
Join Date: Feb 2011
Location: 20 Miles South of the Nations Capital - in Maryland, close to the Potomac River
Posts: 130
Rep Power: 14
Cad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to behold
Default Battery Pack options for Dual 445 A-140

I'm figuring out how long I can safely run my diode with a solid 1" Diameter aluminum heat sink, and while I'm figuring all this out I'm looking for a good battery pack option that may be better than what I'm using.

My driver circuit is the typical LM317 based one, powering a 445nm (A-140) diode in a radio shack project box with about a half an amp (used a dummy load) allowed to the diode, with 9v into the LM317 from six (regular) AA batteries. Soon I will have a second diode running next to the first for a dual beam (or combined if I can).

In case it helps, when I tested the output (late) last night, the diode maxxed out at 589mW - as tested with a laserbee 2.5W.

The second test was a little lower... and I suspect that I could get the battery pack to hold it's current supplying ability and last longer if I switch to lithium ion batteries, in fact I'm not convinced the slightly used batteries I had were able to give me the highest reading. Unfortunately I'm at work and can't switch em out with fresh batteries..

regardless, I'm contemplating using 1.5v 2900mAh Li/ion AA batteries I've found on the net (just under $2 a battery) but I am not opposed to larger batteries or "better" (smaller?) batteries.

Does anyone else have advice as pertains to li/ion batteries? I keep reading about these diodes safely handling higher currents by being "pulsed" and I wonder if I shouldn't be learning more about building a pulsed driver circuit? Then maybe I wouldn't need so much battery and could run cooler...

I apologize for being all over the place, but I'm having the time of my life with this new hobby. I'm still learning, (no more burning diodes), searching these forums, and asking questions as my time permits and even donating to the board. I've gotten great advice so far and I hope more people help keep the board up by donating.

Thanks,

Cad602


__________________
Mah Favorites ("weak" ones not listed)
445nm - from scratch - in a Home Made Host - 1.2W
532nm O-Like 200mW Transformable / Adjustable - Sometimes it's up to 240mW stable and sometimes it's 204mW stable?WTF?
405nm 12x - from scratch - in an Ultra Fire WF-501B Host - 353mW
635-660nm Red Laser Module (focusable dot) 3-5V W/Built in Driver Circuit in Home Made Host 220mW+
635nm - "300mW" Mitsubishi diode in Module w/flex by DTR (in temp host) - 454mW

My Best Friend & Laser Power Meter - LaserBee 2.5W USB
Cad602 is offline   Reply With Quote







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







Old 04-11-2011, 05:21 PM #2
Class 1M Laser
 
Join Date: Feb 2011
Location: 20 Miles South of the Nations Capital - in Maryland, close to the Potomac River
Posts: 130
Rep Power: 14
Cad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to behold
Cad602 Cad602 is offline
Class 1M Laser
 
Join Date: Feb 2011
Location: 20 Miles South of the Nations Capital - in Maryland, close to the Potomac River
Posts: 130
Rep Power: 14
Cad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to behold
Default Re: Battery Pack options for Dual 445 A-140

Just to clarify, I want to be able to use the same battery pack to power two of the same diodes (445nm a140's) - with a separate LM 317 driver circuit on each diode obviously - for at least a few minutes at full power, much longer at lower powers....and I'm hoping someone has used Lithium Ion Battery packs to do something similar who could verify that 9volts is enough with the right batteries or if I need a different battery type altogether.
Thanks,

cad602
__________________
Mah Favorites ("weak" ones not listed)
445nm - from scratch - in a Home Made Host - 1.2W
532nm O-Like 200mW Transformable / Adjustable - Sometimes it's up to 240mW stable and sometimes it's 204mW stable?WTF?
405nm 12x - from scratch - in an Ultra Fire WF-501B Host - 353mW
635-660nm Red Laser Module (focusable dot) 3-5V W/Built in Driver Circuit in Home Made Host 220mW+
635nm - "300mW" Mitsubishi diode in Module w/flex by DTR (in temp host) - 454mW

My Best Friend & Laser Power Meter - LaserBee 2.5W USB
Cad602 is offline   Reply With Quote
Old 04-13-2011, 04:56 AM #3
LarryDFW's Avatar
Class 3R Laser
 
Join Date: Dec 2008
Location: Dallas, TX
Posts: 1,577
Rep Power: 128
LarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond repute
LarryDFW LarryDFW is offline
Class 3R Laser
LarryDFW's Avatar
 
Join Date: Dec 2008
Location: Dallas, TX
Posts: 1,577
Rep Power: 128
LarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond reputeLarryDFW has a reputation beyond repute
Default Re: Battery Pack options for Dual 445 A-140

Cad602;

You would be better off with 2 #18650 lithium ion cells.

That would give you ~ the same capacity with 8.4 VDC.

The lower voltage would generate less heat with the dual 445 LD's.

I would use a low-dropout regulator,

instead of the LM317.

LarryDFW
__________________
UV LED Lights F/S, 445nm, Blu-Rays, Red 1/2W, Green Focusables,
Link- Blu-Ray/445 Diode Test Current Levels for Long Life
LarryDFW is offline   Reply With Quote
Old 04-13-2011, 10:31 AM #4
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: Battery Pack options for Dual 445 A-140

I'd use 3 LiIons in series, an then drive the two 445nm diodes connected in series as well, off the same driver.
__________________
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 04-13-2011, 10:17 PM #5
Class 1M Laser
 
Join Date: Feb 2011
Location: 20 Miles South of the Nations Capital - in Maryland, close to the Potomac River
Posts: 130
Rep Power: 14
Cad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to behold
Cad602 Cad602 is offline
Class 1M Laser
 
Join Date: Feb 2011
Location: 20 Miles South of the Nations Capital - in Maryland, close to the Potomac River
Posts: 130
Rep Power: 14
Cad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to behold
Default Re: Battery Pack options for Dual 445 A-140

Thanks for the suggestions, I am intrigued with the prospect of driving two off the same driver - I think I've seen a thread on here with someone doing that...I'll go check it out.
__________________
Mah Favorites ("weak" ones not listed)
445nm - from scratch - in a Home Made Host - 1.2W
532nm O-Like 200mW Transformable / Adjustable - Sometimes it's up to 240mW stable and sometimes it's 204mW stable?WTF?
405nm 12x - from scratch - in an Ultra Fire WF-501B Host - 353mW
635-660nm Red Laser Module (focusable dot) 3-5V W/Built in Driver Circuit in Home Made Host 220mW+
635nm - "300mW" Mitsubishi diode in Module w/flex by DTR (in temp host) - 454mW

My Best Friend & Laser Power Meter - LaserBee 2.5W USB
Cad602 is offline   Reply With Quote
Old 04-14-2011, 10:07 PM #6
Class 1M Laser
 
Join Date: Feb 2011
Location: 20 Miles South of the Nations Capital - in Maryland, close to the Potomac River
Posts: 130
Rep Power: 14
Cad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to behold
Cad602 Cad602 is offline
Class 1M Laser
 
Join Date: Feb 2011
Location: 20 Miles South of the Nations Capital - in Maryland, close to the Potomac River
Posts: 130
Rep Power: 14
Cad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to beholdCad602 is a splendid one to behold
Default Re: Battery Pack options for Dual 445 A-140

I will be building another test load so I can verify that I'm not going to fry anything. And I'll be ordering some batteries tonight...

I've seen some information on here that helps a little but it's not the thread I stumbled upon in the past that had the same set up.. but I'm not too worried, I think I've more or less got it all figured out.

For now the circuit will use the LM317 though I suspect I need to graduate to some of the other regulators I've seen discussed here.

Cad602
__________________
Mah Favorites ("weak" ones not listed)
445nm - from scratch - in a Home Made Host - 1.2W
532nm O-Like 200mW Transformable / Adjustable - Sometimes it's up to 240mW stable and sometimes it's 204mW stable?WTF?
405nm 12x - from scratch - in an Ultra Fire WF-501B Host - 353mW
635-660nm Red Laser Module (focusable dot) 3-5V W/Built in Driver Circuit in Home Made Host 220mW+
635nm - "300mW" Mitsubishi diode in Module w/flex by DTR (in temp host) - 454mW

My Best Friend & Laser Power Meter - LaserBee 2.5W USB
Cad602 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 12:31 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