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Old 05-04-2016, 01:34 PM #1
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Default powering my 638 nm 700mw laser

hey im kinda new to the whole building lasers i have got the basics down but im still abit fuzzy with the voltage and amps.

this is my set up im getting Oclaro 700mW 638 22mm Module W/Driver &
Three Element Glass Lens
510 Threaded Connection
Power with 2-6V or one 3.7V Li-Ion.

well obviously i would power the laser with the volatage it says and idk probs a 4500mA battery but the module gives me a choice of 900mA,1A,1.A or 1.2 A so i need to know what would be the best choice for my laser like how many amps would be the best. thanks


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Old 05-04-2016, 04:00 PM #2
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Default Re: powering my 638 nm 700mw laser

Quote:
Originally Posted by Rive View Post
hey im kinda new to the whole building lasers i have got the basics down but im still abit fuzzy with the voltage and amps.

this is my set up im getting Oclaro 700mW 638 22mm Module W/Driver &
Three Element Glass Lens
510 Threaded Connection
Power with 2-6V or one 3.7V Li-Ion.

well obviously i would power the laser with the volatage it says and idk probs a 4500mA battery but the module gives me a choice of 900mA,1A,1.A or 1.2 A so i need to know what would be the best choice for my laser like how many amps would be the best. thanks
Don΄t quote me on this, but I think the driver will take how ever many amps it needs, no matter what battery you are using. The only difference is a batteries amp hours, which I think is just how many amps a battery can put out consistently for an hour? So the larger the amp hour, the longer the battery will last. The rating on driver just tells you how many amps it is feeding into the diode. From what I have seen the 1Amp option seems to be the most common for a combination of power, and lifespan of the diode.

Maybe Iḿ wrong. Iḿ still new to this so any veterans please step in and correct if I am wrong.
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Old 05-04-2016, 05:14 PM #3
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Default Re: powering my 638 nm 700mw laser

Quote:
Originally Posted by Rive View Post
hey im kinda new to the whole building lasers i have got the basics down but im still abit fuzzy with the voltage and amps.

this is my set up im getting Oclaro 700mW 638 22mm Module W/Driver &
Three Element Glass Lens
510 Threaded Connection
Power with 2-6V or one 3.7V Li-Ion.

well obviously i would power the laser with the volatage it says and idk probs a 4500mA battery but the module gives me a choice of 900mA,1A,1.A or 1.2 A so i need to know what would be the best choice for my laser like how many amps would be the best. thanks
This is a bit hard to understand. What exactly are you asking? A 3.7v 18650 or any other lithium-ion battery will work. The discharge rate (<1.2A as you stated) is well within standard discharge rate for 18650s.

Quote:
Originally Posted by Lildutchboy7 View Post
Don΄t quote me on this, but I think the driver will take how ever many amps it needs, no matter what battery you are using. The only difference is a batteries amp hours, which I think is just how many amps a battery can put out consistently for an hour? So the larger the amp hour, the longer the battery will last. The rating on driver just tells you how many amps it is feeding into the diode. From what I have seen the 1Amp option seems to be the most common for a combination of power, and lifespan of the diode.

Maybe Iḿ wrong. Iḿ still new to this so any veterans please step in and correct if I am wrong.
You're definitely on the right track; a driver will take the current it needs. However, the battery you're using does matter, in some situations. For example, in one of the new high power diodes, the large amount of current needed will require a battery with a large discharge rate, otherwise it will damage the battery. Or, multiple batteries could be used if high discharge rate batteries cannot be found or acquired.

OP, you don't need to worry about discharge rates, as your module seems to be within the standard.
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Old 05-04-2016, 05:21 PM #4
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Default Re: powering my 638 nm 700mw laser

Quote:
Originally Posted by Lildutchboy7 View Post
Don΄t quote me on this, but I think the driver will take how ever many amps it needs, no matter what battery you are using. The only difference is a batteries amp hours, which I think is just how many amps a battery can put out consistently for an hour? So the larger the amp hour, the longer the battery will last. The rating on driver just tells you how many amps it is feeding into the diode. From what I have seen the 1Amp option seems to be the most common for a combination of power, and lifespan of the diode.

Maybe Iḿ wrong. Iḿ still new to this so any veterans please step in and correct if I am wrong.
Yes - the driver will take whatever it needs to power the diode, assuming the battery is capable of supplying it - if not, well, you'll have issues.

Yes - amp hours is a measure of the capacity of a battery. So say you have a 1000mAh battery (1Ah), then that battery has the capacity to supply 1A of current for 1 hour.

To the OP - some more information about your build would help. What host are you using if any? We can't recommend a battery if we don't know what'll fit. Generally I'd go for whatever fits, provides the correct voltage and can supply enough current - so probably one of the 3.7V Lithiums at whatever size fits. Assuming 3.7V is enough.

Not sure what current to use for that diode as I have no experience with it - the information should be out there - search for it.

Perhaps read up on electronics theory a little more before proceeding too - it's good to understand how these things work. It'll make building it all easier and troubleshooting it won't be as hard if something goes wrong.
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Old 05-04-2016, 10:12 PM #5
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Default Re: powering my 638 nm 700mw laser

Thanks guys this info has helped a lot and yes I am using a 18650 battery with a mechanical mod as the battery holder. And the the module is one of dtr's custom heatsink modules that can screw into any mech mod. Cheers guys

This is the item if you wanna know what I'm talking about.

https://sites.google.com/site/dtrlpf...w-638nm-diodes

Last edited by Rive; 05-04-2016 at 10:13 PM.
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Old 05-04-2016, 10:59 PM #6
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Default Re: powering my 638 nm 700mw laser

Quote:
Originally Posted by Rive View Post
Thanks guys this info has helped a lot and yes I am using a 18650 battery with a mechanical mod as the battery holder. And the the module is one of dtr's custom heatsink modules that can screw into any mech mod. Cheers guys

This is the item if you wanna know what I'm talking about.

https://sites.google.com/site/dtrlpf...w-638nm-diodes
I actually just purchased this exact same diode yesterday. I'm hoping it'll be here by Saturday . Maybe then we can compare builds, beams and such!
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Old 05-04-2016, 11:40 PM #7
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Default Re: powering my 638 nm 700mw laser

Quote:
Originally Posted by Lildutchboy7 View Post
I actually just purchased this exact same diode yesterday. I'm hoping it'll be here by Saturday . Maybe then we can compare builds, beams and such!
Gratz on the purchase! I actually have yet to own a class IV red, maybe this will be my start in the not too distant future What host are you putting it into?
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Old 05-04-2016, 11:48 PM #8
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Default Re: powering my 638 nm 700mw laser

I was thinking of buying a s4x host but I was wondering if my now empty c6 host would work just as well. I don't think the oclaro gets very hot so I wouldn't think it would need a very large host.
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Old 05-05-2016, 01:45 AM #9
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Default Re: powering my 638 nm 700mw laser

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Originally Posted by Lildutchboy7 View Post
I actually just purchased this exact same diode yesterday. I'm hoping it'll be here by Saturday . Maybe then we can compare builds, beams and such!
Awesome yeh noice i would like to do that i should have mine soonsih but yeh its my first class 4 red laser and i cant wait and i thought about getting a c6 bundle there on special right now but i decided to put in a little more money and get a more quality build. this is the mechanical mod i got to complete my build. tho i do not have a lpm if you do could you test it .

Mechanical Mech MOD Clone Stainless Steel 18650 Telescopic Nzonic V4 | eBay
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Old 05-05-2016, 01:48 AM #10
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Default Re: powering my 638 nm 700mw laser

and im probs not getting a g-2 lens for a while i really like using a three element lens i prefer a nicer beam then power. but i heard on reds the dispersion (i think thats what you call it) is really bad
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Old 05-05-2016, 03:06 AM #11
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Default Re: powering my 638 nm 700mw laser

Quote:
Originally Posted by Rive View Post
and im probs not getting a g-2 lens for a while i really like using a three element lens i prefer a nicer beam then power. but i heard on reds the dispersion (i think thats what you call it) is really bad
Divergeance

And yeah, I like the 3 element for my beams, and the G2 for burning and such. I was thinking of looking into getting a G7 lens somewhere but I still need to learn more about it first. I will probably use the 3 element for this red as well. I have a G2 lens from DTR and I think I'm going to keep that on my new NUBM47 laser that should be finished in a week or so.
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Old 05-05-2016, 08:04 PM #12
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Default Re: powering my 638 nm 700mw laser

G7 = basically a child of the 3E and G2, better divergence than the G2 and more power than the 3E.
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Old 05-05-2016, 09:27 PM #13
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Default Re: powering my 638 nm 700mw laser

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Originally Posted by ElectricPlasma View Post
G7 = basically a child of the 3E and G2, better divergence than the G2 and more power than the 3E.
Okay cool! I think I'll buy one from sanwulasers, cause that's the only place I can really find one that screws in like the g2
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Old 05-14-2016, 02:40 AM #14
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Default Re: powering my 638 nm 700mw laser

Well I finally created my Oclaro! It is in a Poorman's/Scrapyard host because I needed more room for a driver and I didn't feel like buying a new host. So I made one for myself! Here it is:

http://imgur.com/QfOA1MI

I don't really have many tools for threading and things like that so a lot of it is soldered and/or pressed together. It is very sturdy though so I'm happy with it!
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Where'd all my lasers go

639nm MITSU G84 1.8W Aluminum ElectricPlasma Host + Copper Jewel Focus Adapter By FlaminPyro

Multiple $5 Ebay Laser pens

Name's Zach.

Last edited by Lildutchboy7; 05-14-2016 at 02:41 AM.
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Old 05-14-2016, 03:31 AM #15
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Default Re: powering my 638 nm 700mw laser

Quote:
Originally Posted by Lildutchboy7 View Post
Well I finally created my Oclaro! It is in a Poorman's/Scrapyard host because I needed more room for a driver and I didn't feel like buying a new host. So I made one for myself! Here it is:

Imgur: The most awesome images on the Internet

I don't really have many tools for threading and things like that so a lot of it is soldered and/or pressed together. It is very sturdy though so I'm happy with it!
Nice job for not having any tools, it's very hard to work with metal unless you have the right tools for it obviously. Got any shots of it working or maybe beam shots?
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632.8nm: Melles Griot HeNe, 1mW
532nm: Custom made GITD Pocket laser: ~133mW
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Old 05-14-2016, 07:45 AM #16
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Default Re: powering my 638 nm 700mw laser

Guys you should try the Mitts 500 in my opinion you can push them harder at 1.4a you can manage 1.1-1.2w and you don't need an expensive driver just use an AMC 1735,
I have 2 going strong over a year now!
Attached Thumbnails
powering my 638 nm 700mw laser-1463212375.4423.jpg   powering my 638 nm 700mw laser-1463212423.4587.jpg   powering my 638 nm 700mw laser-1463212476.7375.jpg   powering my 638 nm 700mw laser-1463212526.5425.jpg  
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Custom 589 H module build 50mw
Warsun Mini stainless PL515 230ma Xboost 35mw acrylic
Goread Stainless PLTB520B1 480ma Xboost 210mw G2
Coast hp14 Mod NUBMO7E 4.5a SXD 5w
JetBeam Titanium 24k Gold Plated duel Flexdrive 2w
Tank007 Stainless BDR 206 .5a Nano 850mw
Sigelli Mec Mod BDR 209 .5a Nano 710mw
Aurora sh-032 SF-BW512 .5a Nano 700mw
Kryton Groove NDB7875 2.4a Blitzbuck 2.9w
Aluminium host NDB7875 2.4a Xdrive 2.8w
Xplorer stainless mini NDB7875 1.8a Xboost 2.2w
UltraFire Stainless A140 1.2a boost driver 1w
Thor Aluminium Ebay M140 1.5a Buck driver 1.6w
Mini Stainless M140 1.8a Xboost 1.9w
Caravela Mod Brass Mitts 500 1.4a FlexdriveV5 1.36w
Gus Mod Stainless Mitts 500 1.4a AMC 5 mode 1w
Sec g7-L2 SS opnext-HL63603TG 190ma Linear 150mw
Custom RGB Module Flexdrives 300mw+

Last edited by badboybilly; 05-14-2016 at 07:56 AM.
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