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 09-29-2011, 12:24 PM #1
Fretwrecker94's Avatar
Class 2M Laser
 
Join Date: Mar 2011
Location: Maine
Posts: 796
Rep Power: 79
Fretwrecker94 has a reputation beyond reputeFretwrecker94 has a reputation beyond reputeFretwrecker94 has a reputation beyond reputeFretwrecker94 has a reputation beyond reputeFretwrecker94 has a reputation beyond reputeFretwrecker94 has a reputation beyond reputeFretwrecker94 has a reputation beyond reputeFretwrecker94 has a reputation beyond reputeFretwrecker94 has a reputation beyond reputeFretwrecker94 has a reputation beyond reputeFretwrecker94 has a reputation beyond repute
Fretwrecker94 Fretwrecker94 is offline
Class 2M Laser
Fretwrecker94's Avatar
 
Join Date: Mar 2011
Location: Maine
Posts: 796
Rep Power: 79
Fretwrecker94 has a reputation beyond reputeFretwrecker94 has a reputation beyond reputeFretwrecker94 has a reputation beyond reputeFretwrecker94 has a reputation beyond reputeFretwrecker94 has a reputation beyond reputeFretwrecker94 has a reputation beyond reputeFretwrecker94 has a reputation beyond reputeFretwrecker94 has a reputation beyond reputeFretwrecker94 has a reputation beyond reputeFretwrecker94 has a reputation beyond reputeFretwrecker94 has a reputation beyond repute
Default LM1117 Driver Build Questions

Hi I've been noticing the success rate of many LM1117 drivers recently. I am thinking of building a few for my use. Is there any schematic someone can provide me of an LM1117 current regulator? I've looked all around the forum and can't seem to find one. I understand it's pin-out is identical to the LM317, but I've heard you absolutely need 2 10uf Ceramic Caps.

Any help would be appreciated. If this seems to be a redundant thread and/or someone provides me with a link to a helpful thread, I will most certainly delete this for bandwidth's sake


Fretwrecker94 is offline   Reply With Quote







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







Old 09-29-2011, 06:49 PM #2
Ghostchrome's Avatar
Class 3R Laser
 
Join Date: Aug 2011
Location: Southern California
Posts: 1,155
Rep Power: 186
Ghostchrome has a reputation beyond reputeGhostchrome has a reputation beyond reputeGhostchrome has a reputation beyond reputeGhostchrome has a reputation beyond reputeGhostchrome has a reputation beyond reputeGhostchrome has a reputation beyond reputeGhostchrome has a reputation beyond reputeGhostchrome has a reputation beyond reputeGhostchrome has a reputation beyond reputeGhostchrome has a reputation beyond reputeGhostchrome has a reputation beyond repute
Ghostchrome Ghostchrome is offline
Class 3R Laser
Ghostchrome's Avatar
 
Join Date: Aug 2011
Location: Southern California
Posts: 1,155
Rep Power: 186
Ghostchrome has a reputation beyond reputeGhostchrome has a reputation beyond reputeGhostchrome has a reputation beyond reputeGhostchrome has a reputation beyond reputeGhostchrome has a reputation beyond reputeGhostchrome has a reputation beyond reputeGhostchrome has a reputation beyond reputeGhostchrome has a reputation beyond reputeGhostchrome has a reputation beyond reputeGhostchrome has a reputation beyond reputeGhostchrome has a reputation beyond repute
Default Re: LM1117 Driver Build Questions

Just put a cap before the lm1117 and then another one before the LD.
Ghostchrome is offline   Reply With Quote
Old 10-03-2011, 07:29 PM #3
foulmist's Avatar
Class 3R Laser
 
Join Date: Mar 2011
Location: Smolyan, Bulgaria
Posts: 1,076
Rep Power: 107
foulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond repute
Send a message via Skype™ to foulmist
foulmist foulmist is offline
Class 3R Laser
foulmist's Avatar
 
Join Date: Mar 2011
Location: Smolyan, Bulgaria
Posts: 1,076
Rep Power: 107
foulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond repute
Send a message via Skype™ to foulmist
Default Re: LM1117 Driver Build Questions

10uF are by datasheet..
they are there for stability and ripple control

here is a simple diagram which I drew in photoshop because I don't like paint

Attached Thumbnails
LM1117 Driver Build Questions-l1117.jpg  

Last edited by foulmist; 10-04-2011 at 04:43 AM.
foulmist is offline   Reply With Quote
Old 10-03-2011, 07:50 PM #4
rhd's Avatar
rhd rhd is offline
Class 4 Laser
 
Join Date: Dec 2010
Posts: 8,491
Rep Power: 1392
rhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond repute
rhd rhd is offline
Class 4 Laser
rhd's Avatar
 
Join Date: Dec 2010
Posts: 8,491
Rep Power: 1392
rhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond repute
Default Re: LM1117 Driver Build Questions

Quote:
Originally Posted by foulmist View Post
10uF are by datasheet..
they are there for stability and ripple control

here is a simple diagram which I drew in photoshop because I don't like paint

I think you'll find that the < 1.45 VDrop figure doesn't hold up. The resistor itself will drop 1.25V, and it's not the case that the IC only drops 0.2 V.
__________________
CURRENT WAVELENGTHS:
405|441|450|467|473|495|505|520|532|556|PGLRG|589|594|632|638|660


SAFETY & IMPORTANT READING (threads authored and contributed to by various members of LPF):
- Federal Aviation Administration - Laser Safety Initiative (link)
- Info release from Laserglow - Default Canadian restrictions on portable lasers (link)
- The Necessity of Safety Goggles (link)

rhd is offline   Reply With Quote
Old 10-03-2011, 11:34 PM #5
Benm's Avatar
Class 4 Laser
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,442
Rep Power: 19481
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Benm Benm is online now
Class 4 Laser
Benm's Avatar
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,442
Rep Power: 19481
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Default Re: LM1117 Driver Build Questions

You should add up those drop voltages indeed, resulting in something around 2.7 volts for the whole thing.

The output cap doesnt have to be 10 uF really, using a good quality 100 nF ceramic cap will do fine. The input one can be electrolytic if you like.
Benm is online now   Reply With Quote
Old 10-03-2011, 11:58 PM #6
mpwn's Avatar
Class 2 Laser
 
Join Date: Aug 2011
Location: Sydney, Australia
Posts: 287
Rep Power: 11
mpwn is a jewel in the roughmpwn is a jewel in the roughmpwn is a jewel in the roughmpwn is a jewel in the rough
Send a message via MSN to mpwn Send a message via Skype™ to mpwn
mpwn mpwn is offline
Class 2 Laser
mpwn's Avatar
 
Join Date: Aug 2011
Location: Sydney, Australia
Posts: 287
Rep Power: 11
mpwn is a jewel in the roughmpwn is a jewel in the roughmpwn is a jewel in the roughmpwn is a jewel in the rough
Send a message via MSN to mpwn Send a message via Skype™ to mpwn
Default Re: LM1117 Driver Build Questions

may i ask what is the advantage of this compared to a LM317?
mpwn is offline   Reply With Quote
Old 10-04-2011, 12:04 AM #7
bennett326's Avatar
Class 3R Laser
 
Join Date: May 2011
Location: tennessee
Posts: 1,965
Rep Power: 131
bennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond repute
bennett326 bennett326 is offline
Class 3R Laser
bennett326's Avatar
 
Join Date: May 2011
Location: tennessee
Posts: 1,965
Rep Power: 131
bennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond repute
Default Re: LM1117 Driver Build Questions

Um ldo
__________________
Etherdream DAC review here

benneh: it might have been a dye laser pumped by a argon
benneh: HOLY SH!T
benneh: i am such a nerd
ARG: AHHAHAHHAHHAHAAHA
bennett326 is offline   Reply With Quote
Old 10-04-2011, 12:48 AM #8
Blord's Avatar
Class 4 Laser
 
Join Date: Dec 2007
Location: Belgium
Posts: 5,368
Rep Power: 870
Blord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond repute
Blord Blord is offline
Class 4 Laser
Blord's Avatar
 
Join Date: Dec 2007
Location: Belgium
Posts: 5,368
Rep Power: 870
Blord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond reputeBlord has a reputation beyond repute
Default Re: LM1117 Driver Build Questions

The LM1117 has less drop voltage than the LM317. Therefore you have more choices in combination of batteries to power the laser.
__________________
405nm 400mW S06J C6
445nm 3W Big Boy, 2.8W Dominator, 2.4W Steel Laser
450nm 240mW PL450 C6
473nm 100mW PGL-III-C-473
520nm 55mW Skylaser PL520
532nm 821mW Skylaser PL532, 133mW Jetlasers Ti-B
589nm 100mW PGL-III-C-589
635nm 70mW Sanyo SenTorch
638nm 175mW Ehgemus, 1W Rook
660nm 1216mW Skylaser PL660, 263mW LPC826 C6
685nm 33mW Fujitsu FLD6A2TK C6
780nm 150mW Dilda
808nm 640mW C6

I have copper 501B and Dominator lasers for sale !
Blord is offline   Reply With Quote
Old 10-04-2011, 12:58 AM #9
mpwn's Avatar
Class 2 Laser
 
Join Date: Aug 2011
Location: Sydney, Australia
Posts: 287
Rep Power: 11
mpwn is a jewel in the roughmpwn is a jewel in the roughmpwn is a jewel in the roughmpwn is a jewel in the rough
Send a message via MSN to mpwn Send a message via Skype™ to mpwn
mpwn mpwn is offline
Class 2 Laser
mpwn's Avatar
 
Join Date: Aug 2011
Location: Sydney, Australia
Posts: 287
Rep Power: 11
mpwn is a jewel in the roughmpwn is a jewel in the roughmpwn is a jewel in the roughmpwn is a jewel in the rough
Send a message via MSN to mpwn Send a message via Skype™ to mpwn
Default Re: LM1117 Driver Build Questions

what added combination are available like e.g 3xAA?
mpwn is offline   Reply With Quote
Old 10-04-2011, 01:07 AM #10
bennett326's Avatar
Class 3R Laser
 
Join Date: May 2011
Location: tennessee
Posts: 1,965
Rep Power: 131
bennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond repute
bennett326 bennett326 is offline
Class 3R Laser
bennett326's Avatar
 
Join Date: May 2011
Location: tennessee
Posts: 1,965
Rep Power: 131
bennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond reputebennett326 has a reputation beyond repute
Default Re: LM1117 Driver Build Questions

like two lion cell blues btw ldo means low drop out
__________________
Etherdream DAC review here

benneh: it might have been a dye laser pumped by a argon
benneh: HOLY SH!T
benneh: i am such a nerd
ARG: AHHAHAHHAHHAHAAHA
bennett326 is offline   Reply With Quote
Old 10-04-2011, 01:31 AM #11
mpwn's Avatar
Class 2 Laser
 
Join Date: Aug 2011
Location: Sydney, Australia
Posts: 287
Rep Power: 11
mpwn is a jewel in the roughmpwn is a jewel in the roughmpwn is a jewel in the roughmpwn is a jewel in the rough
Send a message via MSN to mpwn Send a message via Skype™ to mpwn
mpwn mpwn is offline
Class 2 Laser
mpwn's Avatar
 
Join Date: Aug 2011
Location: Sydney, Australia
Posts: 287
Rep Power: 11
mpwn is a jewel in the roughmpwn is a jewel in the roughmpwn is a jewel in the roughmpwn is a jewel in the rough
Send a message via MSN to mpwn Send a message via Skype™ to mpwn
Default Re: LM1117 Driver Build Questions

ahh kk , lol i thought you were trying to say idono
mpwn is offline   Reply With Quote
Old 10-04-2011, 04:42 AM #12
foulmist's Avatar
Class 3R Laser
 
Join Date: Mar 2011
Location: Smolyan, Bulgaria
Posts: 1,076
Rep Power: 107
foulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond repute
Send a message via Skype™ to foulmist
foulmist foulmist is offline
Class 3R Laser
foulmist's Avatar
 
Join Date: Mar 2011
Location: Smolyan, Bulgaria
Posts: 1,076
Rep Power: 107
foulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond reputefoulmist has a reputation beyond repute
Send a message via Skype™ to foulmist
Default Re: LM1117 Driver Build Questions

Quote:
Originally Posted by rhd View Post
I think you'll find that the < 1.45 VDrop figure doesn't hold up. The resistor itself will drop 1.25V, and it's not the case that the IC only drops 0.2 V.
Quote:
Originally Posted by Benm View Post
You should add up those drop voltages indeed, resulting in something around 2.7 volts for the whole thing.

The output cap doesnt have to be 10 uF really, using a good quality 100 nF ceramic cap will do fine. The input one can be electrolytic if you like.
yes you are both right, i should change the picture
foulmist is offline   Reply With Quote
Old 10-04-2011, 04:50 AM #13
kiyoukan's Avatar
Class 3B Laser
 
Join Date: Oct 2009
Location: USA, MI
Posts: 2,558
Rep Power: 63
kiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond repute
Send a message via Skype™ to kiyoukan
kiyoukan kiyoukan is offline
Class 3B Laser
kiyoukan's Avatar
 
Join Date: Oct 2009
Location: USA, MI
Posts: 2,558
Rep Power: 63
kiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond repute
Send a message via Skype™ to kiyoukan
Default Re: LM1117 Driver Build Questions

so whats so good about this driver?
in this setup the v drop is over 1.25V right?
im confused as why these sold so well?
__________________
I have lots of lasers.
No point to list.
I have a projector small only 2.5W
I have other toys. What its plain and simple.
kiyoukan is offline   Reply With Quote
Old 10-04-2011, 04:56 AM #14
rhd's Avatar
rhd rhd is offline
Class 4 Laser
 
Join Date: Dec 2010
Posts: 8,491
Rep Power: 1392
rhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond repute
rhd rhd is offline
Class 4 Laser
rhd's Avatar
 
Join Date: Dec 2010
Posts: 8,491
Rep Power: 1392
rhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond reputerhd has a reputation beyond repute
Default Re: LM1117 Driver Build Questions

Quote:
Originally Posted by kiyoukan View Post
so whats so good about this driver?
in this setup the v drop is over 1.25V right?
im confused as why these sold so well?
It's better than an LM317... that's about it.

Why someone would use an LM1117 now, when we've got so much data on the reliability of 1084 and 1085 drivers, is beyond me. Availability and cost perhaps?
__________________
CURRENT WAVELENGTHS:
405|441|450|467|473|495|505|520|532|556|PGLRG|589|594|632|638|660


SAFETY & IMPORTANT READING (threads authored and contributed to by various members of LPF):
- Federal Aviation Administration - Laser Safety Initiative (link)
- Info release from Laserglow - Default Canadian restrictions on portable lasers (link)
- The Necessity of Safety Goggles (link)

rhd is offline   Reply With Quote
Old 10-04-2011, 05:07 AM #15
kiyoukan's Avatar
Class 3B Laser
 
Join Date: Oct 2009
Location: USA, MI
Posts: 2,558
Rep Power: 63
kiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond repute
Send a message via Skype™ to kiyoukan
kiyoukan kiyoukan is offline
Class 3B Laser
kiyoukan's Avatar
 
Join Date: Oct 2009
Location: USA, MI
Posts: 2,558
Rep Power: 63
kiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond reputekiyoukan has a reputation beyond repute
Send a message via Skype™ to kiyoukan
Default Re: LM1117 Driver Build Questions

even still i got a linear driver that has a vdrop at 2a of around 0.55v
and as soon as the new batch of chips gets here will have slope.
__________________
I have lots of lasers.
No point to list.
I have a projector small only 2.5W
I have other toys. What its plain and simple.
kiyoukan is offline   Reply With Quote
Old 10-04-2011, 12:03 PM #16
Benm's Avatar
Class 4 Laser
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,442
Rep Power: 19481
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Benm Benm is online now
Class 4 Laser
Benm's Avatar
 
Join Date: Aug 2007
Location: Netherlands
Posts: 7,442
Rep Power: 19481
Benm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond reputeBenm has a reputation beyond repute
Default Re: LM1117 Driver Build Questions

Quote:
Originally Posted by rhd View Post
It's better than an LM317... that's about it.

Why someone would use an LM1117 now, when we've got so much data on the reliability of 1084 and 1085 drivers, is beyond me. Availability and cost perhaps?
Probably, although i dont see a big advantage of a lm1048 over the 1117 unless you need currents over 800 mA. I guess people stick to the 317 since it was part of the first diy drivers presented here. Sadly its a poor choice for that function with todays components being available. The upside is you can just drop in a 1117 or 1084 when the 317 doesnt cut it any longer
Benm is online now   Reply With Quote
Reply

Tags
ddl, driver, lm1117





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 07:07 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