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, 11:10 PM #1
Wolfman29's Avatar
Class 3B Laser
 
Join Date: Jan 2011
Location: Davis, CA
Posts: 3,828
Rep Power: 227
Wolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond repute
Wolfman29 Wolfman29 is offline
Class 3B Laser
Wolfman29's Avatar
 
Join Date: Jan 2011
Location: Davis, CA
Posts: 3,828
Rep Power: 227
Wolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond repute
Default Jib77 Driver?

Hey guys.

I just got my two jib77 1.3A (supposedly) drivers in the mail....

I hooked one of them up to two 14500s, and I was getting 1.5-1.6A of power out of it. Not sure if that's even *safe* for a 445... is it?

I was hoping to only 1.3A, but oh well. As long as it doesn't kill my diode....

Anyone know why it may be getting so much power, anyway?

Could it not really be giving off that much, and it just be my testload that is overheating (like the diodes or something)?

Thanks.


Wolfman29 is offline   Reply With Quote







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







Old 04-11-2011, 11:32 PM #2
weidmark's Avatar
Class 2M Laser
 
Join Date: Sep 2010
Location: Toronto, Ontario, Canada
Posts: 703
Rep Power: 105
weidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond repute
weidmark weidmark is offline
Class 2M Laser
weidmark's Avatar
 
Join Date: Sep 2010
Location: Toronto, Ontario, Canada
Posts: 703
Rep Power: 105
weidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond repute
Default Re: Jib77 Driver?

I've been pushing them to 1.8A without issues. 1.5-1.6 should be fine as long as you are okay with it. Just make sure you heatsink the drivers
__________________
-



300mW o-like cute <<Mini Review HERE>>
PM if you are interested in a 445nm laser
weidmark is offline   Reply With Quote
Old 04-11-2011, 11:34 PM #3
Wolfman29's Avatar
Class 3B Laser
 
Join Date: Jan 2011
Location: Davis, CA
Posts: 3,828
Rep Power: 227
Wolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond repute
Wolfman29 Wolfman29 is offline
Class 3B Laser
Wolfman29's Avatar
 
Join Date: Jan 2011
Location: Davis, CA
Posts: 3,828
Rep Power: 227
Wolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond repute
Default Re: Jib77 Driver?

Alright. I will just have to watch the duty-cycle, I suppose.

Wish me luck! I already LED'd a 445 last night (failed attempt to make a driver... I didn't notice the spike in current on start-up. Whoops).
Wolfman29 is offline   Reply With Quote
Old 04-11-2011, 11:44 PM #4
weidmark's Avatar
Class 2M Laser
 
Join Date: Sep 2010
Location: Toronto, Ontario, Canada
Posts: 703
Rep Power: 105
weidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond repute
weidmark weidmark is offline
Class 2M Laser
weidmark's Avatar
 
Join Date: Sep 2010
Location: Toronto, Ontario, Canada
Posts: 703
Rep Power: 105
weidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond repute
Default Re: Jib77 Driver?

Yep . Make sure you touch those output wires together just before soldering them to the diode.
__________________
-



300mW o-like cute <<Mini Review HERE>>
PM if you are interested in a 445nm laser
weidmark is offline   Reply With Quote
Old 04-11-2011, 11:47 PM #5
Wolfman29's Avatar
Class 3B Laser
 
Join Date: Jan 2011
Location: Davis, CA
Posts: 3,828
Rep Power: 227
Wolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond repute
Wolfman29 Wolfman29 is offline
Class 3B Laser
Wolfman29's Avatar
 
Join Date: Jan 2011
Location: Davis, CA
Posts: 3,828
Rep Power: 227
Wolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond repute
Default Re: Jib77 Driver?

Oh, hey, just a quick question: Are there any good substitutes to thermal adhesive? I don't have any right now... and I kind of want to get this laser put together. I have no other means of sticking a heatsink to my driver besides by using thermal compound from radioshack. Should I just thermal-compoundly stick some aluminum to my driver and then put some heat-shrink-tubing around it or something?
Wolfman29 is offline   Reply With Quote
Old 04-12-2011, 12:39 AM #6
Wolfman29's Avatar
Class 3B Laser
 
Join Date: Jan 2011
Location: Davis, CA
Posts: 3,828
Rep Power: 227
Wolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond repute
Wolfman29 Wolfman29 is offline
Class 3B Laser
Wolfman29's Avatar
 
Join Date: Jan 2011
Location: Davis, CA
Posts: 3,828
Rep Power: 227
Wolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond repute
Default Re: Jib77 Driver?

Figured out a better solution: put Arctic silver down, then just stick superglue around the edges. Problems solved. Thermally conductive *and* it's adhered.
Wolfman29 is offline   Reply With Quote
Old 04-12-2011, 03:49 AM #7
LaZeRz's Avatar
Class 3B Laser
 
Join Date: Feb 2011
Location: Sydney, Australia
Posts: 2,608
Rep Power: 125
LaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond repute
Send a message via MSN to LaZeRz
LaZeRz LaZeRz is offline
Class 3B Laser
LaZeRz's Avatar
 
Join Date: Feb 2011
Location: Sydney, Australia
Posts: 2,608
Rep Power: 125
LaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond repute
Send a message via MSN to LaZeRz
Default Re: Jib77 Driver?

i ordered my drivers as STRICT 1.3a so they dont overpower my diode since i dont got much heatsinking but DTR runs diodes at up to 1900ma on some of his 2.1w builds

1.6-1.7amps should be fine aslong as you have a good heatsink and a moderate cycle
__________________
Stupid Australian Laser Laws.... Damn you customs

How to remove the PCB from protected cells

My Collection Of Beamshots and Laser Related pics!

Feel free to message me for any help/advice
LaZeRz is offline   Reply With Quote
Old 04-12-2011, 03:59 AM #8
weidmark's Avatar
Class 2M Laser
 
Join Date: Sep 2010
Location: Toronto, Ontario, Canada
Posts: 703
Rep Power: 105
weidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond repute
weidmark weidmark is offline
Class 2M Laser
weidmark's Avatar
 
Join Date: Sep 2010
Location: Toronto, Ontario, Canada
Posts: 703
Rep Power: 105
weidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond repute
Default Re: Jib77 Driver?

I think Jordan does a max of 1.8A as he says there are diminishing returns after that point.

1.6A is fine for the diode. As for duty cycle is depends on what host/HS you use. Some builds can handle 5minutes+ some should stay at a minute. Yes even at 1.8A .

OUt of curiosity... what host are you using?

Quote:
Originally Posted by LaZeRz View Post
i ordered my drivers as STRICT 1.3a so they dont overpower my diode since i dont got much heatsinking but DTR runs diodes at up to 1900ma on some of his 2.1w builds

1.6-1.7amps should be fine aslong as you have a good heatsink and a moderate cycle
__________________
-



300mW o-like cute <<Mini Review HERE>>
PM if you are interested in a 445nm laser
weidmark is offline   Reply With Quote
Old 04-12-2011, 04:07 AM #9
LaZeRz's Avatar
Class 3B Laser
 
Join Date: Feb 2011
Location: Sydney, Australia
Posts: 2,608
Rep Power: 125
LaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond repute
Send a message via MSN to LaZeRz
LaZeRz LaZeRz is offline
Class 3B Laser
LaZeRz's Avatar
 
Join Date: Feb 2011
Location: Sydney, Australia
Posts: 2,608
Rep Power: 125
LaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond repute
Send a message via MSN to LaZeRz
Default Re: Jib77 Driver?

Yeh most of his builds are set too 1.8a (ive seen em all ) but for the sake of power in some tests he runs them at 1.9a for a bit but then turns them back down
__________________
Stupid Australian Laser Laws.... Damn you customs

How to remove the PCB from protected cells

My Collection Of Beamshots and Laser Related pics!

Feel free to message me for any help/advice
LaZeRz is offline   Reply With Quote
Old 04-12-2011, 04:16 AM #10
weidmark's Avatar
Class 2M Laser
 
Join Date: Sep 2010
Location: Toronto, Ontario, Canada
Posts: 703
Rep Power: 105
weidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond repute
weidmark weidmark is offline
Class 2M Laser
weidmark's Avatar
 
Join Date: Sep 2010
Location: Toronto, Ontario, Canada
Posts: 703
Rep Power: 105
weidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond reputeweidmark has a reputation beyond repute
Default Re: Jib77 Driver?

Quote:
Originally Posted by LaZeRz View Post
Yeh most of his builds are set too 1.8a (ive seen em all ) but for the sake of power in some tests he runs them at 1.9a for a bit but then turns them back down
Gotchya
__________________
-



300mW o-like cute <<Mini Review HERE>>
PM if you are interested in a 445nm laser
weidmark is offline   Reply With Quote
Old 04-12-2011, 04:18 AM #11
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: Jib77 Driver?

Confused here -

Jib's drivers (at least the one you're using here) is based on an Lm1117. My sense is that this is a DDL type circuit - IE, the IC is used as a constant current source. Which means it has a resistor set to deliver 1.3A

So why would you get more, ever?

I understand that you *could* get more if you actively changed the resistor to provide for a higher value by means of the 1.25/X calculation. But obviously OP hasn't done that, otherwise he wouldn't have asked this question. So what IS going on here?
__________________
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 04-12-2011, 04:31 AM #12
LaZeRz's Avatar
Class 3B Laser
 
Join Date: Feb 2011
Location: Sydney, Australia
Posts: 2,608
Rep Power: 125
LaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond repute
Send a message via MSN to LaZeRz
LaZeRz LaZeRz is offline
Class 3B Laser
LaZeRz's Avatar
 
Join Date: Feb 2011
Location: Sydney, Australia
Posts: 2,608
Rep Power: 125
LaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond reputeLaZeRz has a reputation beyond repute
Send a message via MSN to LaZeRz
Default Re: Jib77 Driver?

Quote:
Originally Posted by jib77 View Post
These are set to the max the IC can do, in my test this is 1.3A without heatsinking and 1.5-1.6 with GOOD heatsinking. I do not have resistors to set them to anything else. Its like Southwest Airlines, its cheap because I use 1 set of parts for all of them (allows for volume discounts for the parts). I do have a 1.8A driver in the pipeline though, Im hoping to have those available sometime next week.

it seems they output more with heatsinking

o yeh +1 for you Rhd
__________________
Stupid Australian Laser Laws.... Damn you customs

How to remove the PCB from protected cells

My Collection Of Beamshots and Laser Related pics!

Feel free to message me for any help/advice
LaZeRz is offline   Reply With Quote
Old 04-12-2011, 04:34 AM #13
Wolfman29's Avatar
Class 3B Laser
 
Join Date: Jan 2011
Location: Davis, CA
Posts: 3,828
Rep Power: 227
Wolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond repute
Wolfman29 Wolfman29 is offline
Class 3B Laser
Wolfman29's Avatar
 
Join Date: Jan 2011
Location: Davis, CA
Posts: 3,828
Rep Power: 227
Wolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond repute
Default Re: Jib77 Driver?

Well, I was wondering the same thing myself... because the resistors are two 1 Ohm resistors and they look like they are in parallel... two 1 Ohms would be .5 Ohms, which would yeild 2.5A, which is far too much. What's the circuit structure on these?
Wolfman29 is offline   Reply With Quote
Old 04-12-2011, 04:50 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: Jib77 Driver?

Jib:
When you say you set them to the max the IC can do, I'm a little bit confused still. You're still relying on that 1.25 / X equation, aren't you? So isn't there a "set current", even if that's not exactly 1.3A?

EDIT: Wolfman beat me to essentially the same question. If the drivers are wired to *try* for 2.5A, then how are they constant current sources? Is it really ok to rely on the inherent current restrictions of the IC to accomplish current limiting? (maybe it IS, I don't know, that was a legitimate question)

EDIT (again): Question #2, why does the IC suggest that it's a 117, not a 1117 ?
Subtle difference, but the 117 isn't LDO and the 1117 is - I always assumed these were 1117 based drivers until I looked that the photos.
__________________
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)


Last edited by rhd; 04-12-2011 at 04:53 AM.
rhd is offline   Reply With Quote
Old 04-12-2011, 05:28 AM #15
DTR's Avatar
DTR DTR is online now
Class 4 Laser
 
Join Date: Jun 2010
Location: St. Louis MO
Posts: 5,482
Rep Power: 10819
DTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond repute
DTR DTR is online now
Class 4 Laser
DTR's Avatar
 
Join Date: Jun 2010
Location: St. Louis MO
Posts: 5,482
Rep Power: 10819
DTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond reputeDTR has a reputation beyond repute
Default Re: Jib77 Driver?

Quote:
Originally Posted by LaZeRz View Post
Yeh most of his builds are set too 1.8a (ive seen em all ) but for the sake of power in some tests he runs them at 1.9a for a bit but then turns them back down
I do?

Last edited by DTR; 04-12-2011 at 05:31 AM.
DTR is online now   Reply With Quote
Old 04-12-2011, 05:34 AM #16
Wolfman29's Avatar
Class 3B Laser
 
Join Date: Jan 2011
Location: Davis, CA
Posts: 3,828
Rep Power: 227
Wolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond repute
Wolfman29 Wolfman29 is offline
Class 3B Laser
Wolfman29's Avatar
 
Join Date: Jan 2011
Location: Davis, CA
Posts: 3,828
Rep Power: 227
Wolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond reputeWolfman29 has a reputation beyond repute
Default Re: Jib77 Driver?

Turns out there is also a 3.2A spike on start-up... I am starting to think that this driver isn't as effective as I thought it was o.o
Wolfman29 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 05:32 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