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.




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 > General

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



Reply
 
LinkBack Thread Tools Display Modes
Old 12-08-2016, 11:19 AM #33
Class 1 Laser
 
Join Date: Nov 2016
Location: Bulgaria,Sofia
Posts: 92
Rep Power: 69
AngelG has a reputation beyond reputeAngelG has a reputation beyond reputeAngelG has a reputation beyond reputeAngelG has a reputation beyond reputeAngelG has a reputation beyond reputeAngelG has a reputation beyond reputeAngelG has a reputation beyond reputeAngelG has a reputation beyond reputeAngelG has a reputation beyond reputeAngelG has a reputation beyond reputeAngelG has a reputation beyond repute
AngelG AngelG is offline
Class 1 Laser
 
Join Date: Nov 2016
Location: Bulgaria,Sofia
Posts: 92
Rep Power: 69
AngelG has a reputation beyond reputeAngelG has a reputation beyond reputeAngelG has a reputation beyond reputeAngelG has a reputation beyond reputeAngelG has a reputation beyond reputeAngelG has a reputation beyond reputeAngelG has a reputation beyond reputeAngelG has a reputation beyond reputeAngelG has a reputation beyond reputeAngelG has a reputation beyond reputeAngelG has a reputation beyond repute
Default Re: Running Multiple Lser Diodes. (NUBM08)

There are Chinese DC CC CV switching mode buck regulators on ebay. I'd use one of these for higher efficiency and less heat. For 4 diodes x 4.5v you'll need to tune it for at least 18v and the current limiting should also be tuned and verified before you connect it to the diodes. You'll need at least 20v battery to supply it unless you decide to provide each diode with it's own. And the battery must have high current capability. Also i'd replace all electrolytic caps with better brand ideally, Japanese Rubycon.



Last edited by AngelG; 12-08-2016 at 11:23 AM.
AngelG is offline   Reply With Quote







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






Old 12-08-2016, 12:01 PM #34
Member
 
Join Date: Dec 2016
Location: England
Posts: 37
Rep Power: 0
Bowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these parts
Bowler Bowler is offline
Member
 
Join Date: Dec 2016
Location: England
Posts: 37
Rep Power: 0
Bowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these parts
Default Re: Running Multiple Lser Diodes. (NUBM08)

Hi red,

I've changed it now, that missed my eye!

Can you check my latest post I replied to you with. I've put in a wiring drawing, and some questions that i hope you can answer.

Cheers
Bowler is offline   Reply With Quote
Old 12-08-2016, 12:07 PM #35
RedCowboy's Avatar
Class 3B Laser
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,571
Rep Power: 18685
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
RedCowboy RedCowboy is online now
Class 3B Laser
RedCowboy's Avatar
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,571
Rep Power: 18685
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
Default Re: Running Multiple Lser Diodes. (NUBM08)

__________________
You can not put freedom in a bag.
It is in fact an abstract concept.
Yet it is the single most valuable thing anyone has ever had.
RedCowboy is online now   Reply With Quote
Old 12-08-2016, 02:08 PM #36
DashApple's Avatar
Class 3R Laser
 
Join Date: Jan 2009
Posts: 1,334
Rep Power: 2514
DashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond repute
DashApple DashApple is online now
Class 3R Laser
DashApple's Avatar
 
Join Date: Jan 2009
Posts: 1,334
Rep Power: 2514
DashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond reputeDashApple has a reputation beyond repute
Default Re: Running Multiple Lser Diodes. (NUBM08)

Nothing will work if the capacitors are in series with the regulators "in" on that schematic
__________________
Iím okay, No Iím not
Talk to me, Please stop
Shut up ĎCause all your voices manipulate me
Iím still breathing
I should not give in
But itís all the same
Still okay
Not today
Look at me, Look away
ĎCause all your faces humiliate me
And I really donít want to give up but I feel like
I gave up a long time ago

Last edited by DashApple; 12-08-2016 at 02:10 PM.
DashApple is online now   Reply With Quote
Old 12-08-2016, 03:10 PM #37
Member
 
Join Date: Dec 2016
Location: England
Posts: 37
Rep Power: 0
Bowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these parts
Bowler Bowler is offline
Member
 
Join Date: Dec 2016
Location: England
Posts: 37
Rep Power: 0
Bowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these parts
Default Re: Running Multiple Lser Diodes. (NUBM08)

Yea ignore that, I drew it wrong

Last edited by Bowler; 12-08-2016 at 03:10 PM.
Bowler is offline   Reply With Quote
Old 12-08-2016, 05:21 PM #38
Member
 
Join Date: Dec 2016
Location: England
Posts: 37
Rep Power: 0
Bowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these parts
Bowler Bowler is offline
Member
 
Join Date: Dec 2016
Location: England
Posts: 37
Rep Power: 0
Bowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these parts
Default Re: Running Multiple Lser Diodes. (NUBM08)

Hi Red,
Thanks for the info again.

I plan this to be a permanent job, so with the correct and most efficient way and yes, also the safest.

So my main question is. what would you propose I do and the components I use, battery etc and any more suggestions.

The company I work for is quite resourceful, so I will be able to take sheet steel from there and made their own heat sinks.
My plans are to form my circuit onto an electrical bread board, so it will be a easy clean job. and probably encase this with a cooling fan.

For the laser diode array, I have a fully copper heat sink which also has a construction for a cooling fan.

Before I do all of this tho, I will be making a wiring schematic on a wiring software just to make sure it works etc before i go through with the plan.

Cheers.
Bowler is offline   Reply With Quote
Old 12-08-2016, 07:13 PM #39
RedCowboy's Avatar
Class 3B Laser
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,571
Rep Power: 18685
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
RedCowboy RedCowboy is online now
Class 3B Laser
RedCowboy's Avatar
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,571
Rep Power: 18685
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
Default Re: Running Multiple Lser Diodes. (NUBM08)

Your capacitors in your drawing won't work.

Sheet steel is not useful for moving heat,....... ok I see you said copper and a fan, that's good.

How long will this block run, what is it's purpose.

Is it meant to be portable, linear regulators are not nearly as efficient as switching/bucking drivers, they are just inexpensive.

If you are trying to power it for portable use on the cheap then use LM 338T's and mount with isolators to aluminum, if you are using a 7.5v 250a battery as you mentioned then get either 8 x LM 338T's or bucking drivers.

What is the purpose of this, will it be portable? You will need to move a lot of waste heat, also the beam quality of the 08's typical GBall is not very good, are you making a blue spotlight?

Some info would be helpful.
__________________
You can not put freedom in a bag.
It is in fact an abstract concept.
Yet it is the single most valuable thing anyone has ever had.

Last edited by RedCowboy; 12-08-2016 at 07:16 PM.
RedCowboy is online now   Reply With Quote
Old 12-08-2016, 07:40 PM #40
Member
 
Join Date: Dec 2016
Location: England
Posts: 37
Rep Power: 0
Bowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these parts
Bowler Bowler is offline
Member
 
Join Date: Dec 2016
Location: England
Posts: 37
Rep Power: 0
Bowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these parts
Default Re: Running Multiple Lser Diodes. (NUBM08)

Iknow the capacitors won't work, ignore them in that schematic it was just a spare of the moment.

And okay, I will ba able to get sheet aluminium too.

Block will run for max 1 minute at a time.

It's going to be used for cutting up/ engraving on glass reinforced polyester. And very very thin metal Iknow I will need optics,

Would be stationary.

Thanks
Bowler is offline   Reply With Quote
Old 12-08-2016, 07:54 PM #41
diachi's Avatar
Class 4 Laser
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 7,865
Rep Power: 19352
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
diachi diachi is online now
Class 4 Laser
diachi's Avatar
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 7,865
Rep Power: 19352
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
Default Re: Running Multiple Lser Diodes. (NUBM08)

Quote:
Originally Posted by Bowler View Post
Iknow the capacitors won't work, ignore them in that schematic it was just a spare of the moment.

And okay, I will ba able to get sheet aluminium too.

Block will run for max 1 minute at a time.

It's going to be used for cutting up/ engraving on glass reinforced polyester. And very very thin metal Iknow I will need optics,

Would be stationary.

Thanks
IMO, if that's what you're trying to do, you're going about it the wrong way.

Even with PBS/Knife Edging you're going to have a big beam, even focused. Without those it'll be even worse...

More details about what you're trying to achieve and planned optics setup will help us help you, if you want that is.
__________________


405nm | Banggood LT-850 | "5mW" | Review Unit | Review WIP
445nm | Sanwu Laser Pocket Series | 400mW Metered
445nm | NDB7242E Pen Build | 60mW Metered | >>Build Thread<<
450nm | LaserPointerStore - Thor H2 | 1W(?) | Review Unit | >>Review<<
488nm | Spectra Physics 163 Argon | ~30mW Metered
515nm | PL515 Pen Build | 50mW Metered | >>Build Thread<<
520nm | Laserlands 520 | 5mW | Review Unit | 3mW metered | >>Review<<
532nm | Gearbest 303 Pointer | 50mW Metered
532nm | Gearbest JD-850 Pointer | 30mW Metered (I think, need to re-test).
633nm | HeNe | 6mW
633nm | Spectra Physics 155 HeNe | <1mW >>Thread<<
650nm | Sanwu Laser Pocket Series | 200mW Metered
808nm | Melles Griot 532nm Lab Unit | No Crystals >10W | X2



Check out my Reddit Subreddit! >>/r/laserpointers<<


Last edited by diachi; 12-08-2016 at 07:55 PM.
diachi is online now   Reply With Quote
Old 12-08-2016, 07:59 PM #42
RedCowboy's Avatar
Class 3B Laser
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,571
Rep Power: 18685
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
RedCowboy RedCowboy is online now
Class 3B Laser
RedCowboy's Avatar
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,571
Rep Power: 18685
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
Default Re: Running Multiple Lser Diodes. (NUBM08)

Just buy a 40W C02 USB ready laser, this nubm08 block is meant as a light source to pump phosphor. If you want to cut/etch glass you want a C02

Have you already bought the block?

CLICK >>>>>> 40W USB CO2 Laser Engraving Cutting Machine Engraver Cutter New Control Board | eBay
__________________
You can not put freedom in a bag.
It is in fact an abstract concept.
Yet it is the single most valuable thing anyone has ever had.

Last edited by RedCowboy; 12-08-2016 at 08:09 PM.
RedCowboy is online now   Reply With Quote
Old 12-08-2016, 08:05 PM #43
diachi's Avatar
Class 4 Laser
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 7,865
Rep Power: 19352
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
diachi diachi is online now
Class 4 Laser
diachi's Avatar
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 7,865
Rep Power: 19352
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
Default Re: Running Multiple Lser Diodes. (NUBM08)

Quote:
Originally Posted by RedCowboy View Post
Just buy a 40W C02 USB ready laser, this is meant as a light source to pump phosphor.

Have you already bought the block?

40W USB CO2 Laser Engraving Cutting Machine Engraver Cutter New Control Board | eBay
This^^

I was thinking along the same lines - even just a CO2 tube and PSU without the engraver part - and thne build that part yourself to suit your requirements. Or get a fiber coupled IR diode array or something, at least those options give reasonable beam specs for cutting/engraving.

An 08 block is far from ideal for the job.
__________________


405nm | Banggood LT-850 | "5mW" | Review Unit | Review WIP
445nm | Sanwu Laser Pocket Series | 400mW Metered
445nm | NDB7242E Pen Build | 60mW Metered | >>Build Thread<<
450nm | LaserPointerStore - Thor H2 | 1W(?) | Review Unit | >>Review<<
488nm | Spectra Physics 163 Argon | ~30mW Metered
515nm | PL515 Pen Build | 50mW Metered | >>Build Thread<<
520nm | Laserlands 520 | 5mW | Review Unit | 3mW metered | >>Review<<
532nm | Gearbest 303 Pointer | 50mW Metered
532nm | Gearbest JD-850 Pointer | 30mW Metered (I think, need to re-test).
633nm | HeNe | 6mW
633nm | Spectra Physics 155 HeNe | <1mW >>Thread<<
650nm | Sanwu Laser Pocket Series | 200mW Metered
808nm | Melles Griot 532nm Lab Unit | No Crystals >10W | X2



Check out my Reddit Subreddit! >>/r/laserpointers<<

diachi is online now   Reply With Quote
Old 12-08-2016, 08:31 PM #44
Member
 
Join Date: Dec 2016
Location: England
Posts: 37
Rep Power: 0
Bowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these parts
Bowler Bowler is offline
Member
 
Join Date: Dec 2016
Location: England
Posts: 37
Rep Power: 0
Bowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these partsBowler is infamous around these parts
Default Re: Running Multiple Lser Diodes. (NUBM08)

Hi Red and Diachi,

My idea is that It s going to be used as an in expensive cutting tool, much like styro did, its mainly going to be used for the above and cutting up other general bits. I will have a the optics ready and yes I already have the bank. I think if you get the bean to a good concentration then it will easily cut through things.

Cheers
Bowler is offline   Reply With Quote
Old 12-08-2016, 08:40 PM #45
diachi's Avatar
Class 4 Laser
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 7,865
Rep Power: 19352
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
diachi diachi is online now
Class 4 Laser
diachi's Avatar
 
Join Date: Feb 2008
Location: Yellowknife, NT, Canada
Posts: 7,865
Rep Power: 19352
diachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond reputediachi has a reputation beyond repute
Send a message via Skype™ to diachi
Default Re: Running Multiple Lser Diodes. (NUBM08)

Quote:
Originally Posted by Bowler View Post
Hi Red and Diachi,

My idea is that It s going to be used as an in expensive cutting tool, much like styro did, its mainly going to be used for the above and cutting up other general bits. I will have a the optics ready and yes I already have the bank. I think if you get the bean to a good concentration then it will easily cut through things.

Cheers
Inexpensive cutting tool? Really?

Table Saw

Cheaper, faster, no laser safety hazard and will simply work better all round.

Your idea isn't going to easily cut through things and will also likely scorch things without gas assist.
__________________


405nm | Banggood LT-850 | "5mW" | Review Unit | Review WIP
445nm | Sanwu Laser Pocket Series | 400mW Metered
445nm | NDB7242E Pen Build | 60mW Metered | >>Build Thread<<
450nm | LaserPointerStore - Thor H2 | 1W(?) | Review Unit | >>Review<<
488nm | Spectra Physics 163 Argon | ~30mW Metered
515nm | PL515 Pen Build | 50mW Metered | >>Build Thread<<
520nm | Laserlands 520 | 5mW | Review Unit | 3mW metered | >>Review<<
532nm | Gearbest 303 Pointer | 50mW Metered
532nm | Gearbest JD-850 Pointer | 30mW Metered (I think, need to re-test).
633nm | HeNe | 6mW
633nm | Spectra Physics 155 HeNe | <1mW >>Thread<<
650nm | Sanwu Laser Pocket Series | 200mW Metered
808nm | Melles Griot 532nm Lab Unit | No Crystals >10W | X2



Check out my Reddit Subreddit! >>/r/laserpointers<<


Last edited by diachi; 12-08-2016 at 08:52 PM.
diachi is online now   Reply With Quote
Old 12-08-2016, 08:48 PM #46
RedCowboy's Avatar
Class 3B Laser
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,571
Rep Power: 18685
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
RedCowboy RedCowboy is online now
Class 3B Laser
RedCowboy's Avatar
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,571
Rep Power: 18685
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
Default Re: Running Multiple Lser Diodes. (NUBM08)

If you use a big lens all you will have is a crude fire starter, a cutter/etcher NO WAY, not without an obscene amount of corrective lensing.

If you use a big lens you will be converging already unevenly diverging beams. It will not be precise at all.
__________________
You can not put freedom in a bag.
It is in fact an abstract concept.
Yet it is the single most valuable thing anyone has ever had.

Last edited by RedCowboy; 12-08-2016 at 08:50 PM.
RedCowboy is online now   Reply With Quote
Old 12-08-2016, 11:47 PM #47
Cyparagon's Avatar
Class 4 Laser
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,109
Rep Power: 6932
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Cyparagon Cyparagon is online now
Class 4 Laser
Cyparagon's Avatar
 
Join Date: Sep 2007
Location: Wisconsin
Posts: 9,109
Rep Power: 6932
Cyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond reputeCyparagon has a reputation beyond repute
Default Re: Running Multiple Lser Diodes. (NUBM08)

Quote:
Originally Posted by Bowler View Post
...I understand this stuff... However we did not study LD in my course...
Which is precisely why you should build something smaller FIRST. What do you have to lose by doing so? Alternatively, what do you have to GAIN by doing so?

Quote:
Originally Posted by AngelG View Post
There are Chinese DC CC CV switching mode buck regulators on ebay. I'd use one of these for higher efficiency and less heat.
1) you clearly haven't ever seen those on an oscilloscope.

2) They're probably hard to find in the 40-50V range.

3) Linear regulators are actually quite efficient at higher voltages. 4V drop on a 40V load for example is 91%, which is more than most switchmode regulators.

Quote:
Originally Posted by RedCowboy View Post
if you are using a 7.5v 250a battery...
That won't work for series operation. Parallel is the worst way to run this.

Quote:
Originally Posted by Bowler View Post
My idea is that It s going to be used as an in expensive cutting tool




Okay, so this thread was a (almost) total waste of time. This is exactly why I ask people what they're using the laser for EARLY in the thread. I forgot this time, or I just assumed you were going to dick around with it (it's what I would do). I'll leave the above comments in, in case someone else finds them useful.

If your goal is to cut things, a cucumber would be only a slightly worse tool to use. Please re-evaluate your priorities.
__________________
A problem well stated is a problem half solved.
Cyparagon is online now   Reply With Quote
Old 12-09-2016, 04:46 PM #48
RedCowboy's Avatar
Class 3B Laser
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,571
Rep Power: 18685
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
RedCowboy RedCowboy is online now
Class 3B Laser
RedCowboy's Avatar
 
Join Date: Jul 2015
Location: Suburbs of Atlanta Georgia
Posts: 4,571
Rep Power: 18685
RedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond reputeRedCowboy has a reputation beyond repute
Default Re: Running Multiple Lser Diodes. (NUBM08)

91% is not bad, and on the cheap too, if the battery pack was hand made from 3.7v cells you would no doubt come out better there as well.

12 x 3.7v 26650's in series vs. 8 strings of 2 means you get it done with 12 cells rather than 16 and just 1 regulator set at 3.5 - 4.5 amps. I did see 36v as the maximum differential, but I read the 138/338 could handle several 100's of volts and 5A continuous with 7A surge, so it looks like a dozen 26650's in series and a single 138/338 mounted with an isolator to the heat sink would do the trick running the 8 laser diodes in series of course.
__________________
You can not put freedom in a bag.
It is in fact an abstract concept.
Yet it is the single most valuable thing anyone has ever had.

Last edited by RedCowboy; 12-09-2016 at 05:13 PM.
RedCowboy is online now   Reply With Quote
Reply

Tags
40w laser





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 08:42 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