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 02-07-2015, 04:31 AM #17
Junior Member
 
Join Date: Jan 2015
Location: Philippines
Posts: 18
Rep Power: 0
bakulaw is on a distinguished road
bakulaw bakulaw is offline
Junior Member
 
Join Date: Jan 2015
Location: Philippines
Posts: 18
Rep Power: 0
bakulaw is on a distinguished road
Default Re: LM317/LM338 2x 16850 voltage not enough?

Thanks for the replies. I checked my wiring again and I just found out that lm338 Tab is touching the heatsink, my ndb7875 diode is also on the same heatsink. Is the diodes housing(dunno what to call) connected to diodes circuit?


bakulaw is offline   Reply With Quote







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







Old 02-07-2015, 04:36 AM #18
Hiemal's Avatar
Class 3R Laser
 
Join Date: Dec 2011
Location: Houston, TX
Posts: 1,449
Rep Power: 311
Hiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond repute
Hiemal Hiemal is offline
Class 3R Laser
Hiemal's Avatar
 
Join Date: Dec 2011
Location: Houston, TX
Posts: 1,449
Rep Power: 311
Hiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond repute
Default Re: LM317/LM338 2x 16850 voltage not enough?

http://crfgsandiego.org/images/temp/10.gif

Nope, it isn't.
__________________
formerly Le Quack


Drivers and Stuff

Superboost Driver (5.5+ amp capability) End all for Boosting!

MicroSized Boost Driver

Low Dropout Linear Driver


Any electronics related questions?

Send me a PM and I'll try my best to answer!
Hiemal is offline   Reply With Quote
Old 02-07-2015, 05:11 AM #19
The Lightning Stalker's Avatar
Class 3B Laser
 
Join Date: Aug 2013
Location: MI, US
Posts: 2,654
Rep Power: 716
The Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond repute
The Lightning Stalker The Lightning Stalker is offline
Class 3B Laser
The Lightning Stalker's Avatar
 
Join Date: Aug 2013
Location: MI, US
Posts: 2,654
Rep Power: 716
The Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond repute
Default Re: LM317/LM338 2x 16850 voltage not enough?

Enough charge on the capacitor can blow
away the bond wires and cause the diode to
go open circuit. I hope that is not the
case.
__________________
ALL NEW MEMBERS MUST READ THIS!!! --> http://www.laserpointersafety.com

"Where, now, is the way by which the light distributes itself" - Job 38:24

YouTube Channel
The Lightning Stalker is offline   Reply With Quote
Old 02-07-2015, 08:50 AM #20
Junior Member
 
Join Date: Jan 2015
Location: Philippines
Posts: 18
Rep Power: 0
bakulaw is on a distinguished road
bakulaw bakulaw is offline
Junior Member
 
Join Date: Jan 2015
Location: Philippines
Posts: 18
Rep Power: 0
bakulaw is on a distinguished road
Default Re: LM317/LM338 2x 16850 voltage not enough?

My lm338 is also damaged, its not regulating current, it killed my diode. Is there a way to make the current stop flowing when regulator is damaged? Is it ok to add fuse at the output?
bakulaw is offline   Reply With Quote
Old 02-07-2015, 06:09 PM #21
Hiemal's Avatar
Class 3R Laser
 
Join Date: Dec 2011
Location: Houston, TX
Posts: 1,449
Rep Power: 311
Hiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond repute
Hiemal Hiemal is offline
Class 3R Laser
Hiemal's Avatar
 
Join Date: Dec 2011
Location: Houston, TX
Posts: 1,449
Rep Power: 311
Hiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond reputeHiemal has a reputation beyond repute
Default Re: LM317/LM338 2x 16850 voltage not enough?

just to be sure, you had it connected like this, yes?

http://diyaudioprojects.com/Technica...-Scheamtic.png

and this is its pinout.

http://circuits.datasheetdir.com/39/LM338-pinout.jpg

AS far as making it stop if the regulator is damaged... It shouldn't be problematic once you replace the regulator and i'm kind of mystified how one of those could die unless you stuck it in a wall outlet or something. They're normally VERY robust.
__________________
formerly Le Quack


Drivers and Stuff

Superboost Driver (5.5+ amp capability) End all for Boosting!

MicroSized Boost Driver

Low Dropout Linear Driver


Any electronics related questions?

Send me a PM and I'll try my best to answer!
Hiemal is offline   Reply With Quote
Old 02-07-2015, 07:06 PM #22
The Lightning Stalker's Avatar
Class 3B Laser
 
Join Date: Aug 2013
Location: MI, US
Posts: 2,654
Rep Power: 716
The Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond repute
The Lightning Stalker The Lightning Stalker is offline
Class 3B Laser
The Lightning Stalker's Avatar
 
Join Date: Aug 2013
Location: MI, US
Posts: 2,654
Rep Power: 716
The Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond repute
Default Re: LM317/LM338 2x 16850 voltage not enough?

Quote:
Originally Posted by bakulaw View Post
My lm338 is also damaged, its not regulating current, it killed my diode. Is there a way to make the current stop flowing when regulator is damaged? Is it ok to add fuse at the output?
By the time a fuse blows, the damage has
already been done. There isn't really a
way without a significant increase in
complexity.
__________________
ALL NEW MEMBERS MUST READ THIS!!! --> http://www.laserpointersafety.com

"Where, now, is the way by which the light distributes itself" - Job 38:24

YouTube Channel
The Lightning Stalker is offline   Reply With Quote
Old 02-08-2015, 01:11 AM #23
Junior Member
 
Join Date: Jan 2015
Location: Philippines
Posts: 18
Rep Power: 0
bakulaw is on a distinguished road
bakulaw bakulaw is offline
Junior Member
 
Join Date: Jan 2015
Location: Philippines
Posts: 18
Rep Power: 0
bakulaw is on a distinguished road
Default Re: LM317/LM338 2x 16850 voltage not enough?

Hmmm. Are there fake lm338s/lm317? I bought this on ebay. I already damaged a few. lm338 cant give more than 1.8A, i thought it has thermal protection but mine sometimes die instantly. I think my wiring is correct since its working fine around 1A. Thanks all for your time.
bakulaw is offline   Reply With Quote
Old 02-08-2015, 01:26 AM #24
The Lightning Stalker's Avatar
Class 3B Laser
 
Join Date: Aug 2013
Location: MI, US
Posts: 2,654
Rep Power: 716
The Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond repute
The Lightning Stalker The Lightning Stalker is offline
Class 3B Laser
The Lightning Stalker's Avatar
 
Join Date: Aug 2013
Location: MI, US
Posts: 2,654
Rep Power: 716
The Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond reputeThe Lightning Stalker has a reputation beyond repute
Default Re: LM317/LM338 2x 16850 voltage not enough?

Almost all are fake. Take a look.

X-Drive X-Boost
Lm317 driver still best cheap option?
__________________
ALL NEW MEMBERS MUST READ THIS!!! --> http://www.laserpointersafety.com

"Where, now, is the way by which the light distributes itself" - Job 38:24

YouTube Channel
The Lightning Stalker is offline   Reply With Quote
Old 02-08-2015, 01:58 AM #25
Junior Member
 
Join Date: Jan 2015
Location: Philippines
Posts: 18
Rep Power: 0
bakulaw is on a distinguished road
bakulaw bakulaw is offline
Junior Member
 
Join Date: Jan 2015
Location: Philippines
Posts: 18
Rep Power: 0
bakulaw is on a distinguished road
Default Re: LM317/LM338 2x 16850 voltage not enough?

Quote:
Originally Posted by The Lightning Stalker View Post
Almost all are fake. Take a look.

X-Drive X-Boost
Lm317 driver still best cheap option?
I wish you're lying, i've a lot LOL. Thanks! I can stop trying to fix it now.
bakulaw 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 07:42 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