Welcome to Laser Pointer Forums - discuss green laser pointers, blue laser pointers, and all types of lasers

Buy Site Supporter Role (remove some ads) | LPF Donations

Links below open in new window

FrozenGate by Avery

5000mW 808nm C-Mount

billg519 said:
Here's a fairly simple and cheap solution, but needs lithium battery voltage to run. (4.2v) Get some DX flashlight regulators, these are a negative side regulator and are available in 350, 700, 1050, and 1400 ma sizes. These can be stacked to increase the current. The regulator stack in the attached photo  delivers about 5.5 amps. The photo shows how to stack them. The regulator stack is small, 5/8" diameter, 1/2" long.
Click to expand...

I bet that eats batteries like nothin else!!! run time.... 2 minutes... LOL
 





Yeah, that would be perfect. But how much life would I get out of a 10,000-15,000mAh Li-Ion battery?
 
2-3 h at 5000mA draw :)
But I think it would be more like 1:30 to 2:15 h...

ArRAY
 
Midknight said:
What is the Threshold current though?
Click to expand...
The minimum current it needs to start lasing. Don't think you will give it 1.1A and it will start lasing at full power.
 
Kenom:

I used 2 x 25500 lithiums (in parallel) for the laser in the attached photo.
It is 960nm and puts out about 3.5 watts.
Battery life is not too bad so far.
Diode is c-mount, rated 4 watts, so diode life should be good.
 

Attachments

  • Sep0408D200_020_1.jpg
    Sep0408D200_020_1.jpg
    145.9 KB · Views: 1,245
billg519 said:
Kenom:

I used 2 x 25500 lithiums (in parallel) for the laser in the attached photo.
It is 960nm and puts out about 3.5 watts.
Battery life is not too bad so far.
Diode is c-mount, rated 4 watts, so diode life should be good.
Click to expand...

Hey man. What do you suggest for a driver? I need it to hit 5200mA. Diode is rated at 5W

And I'm going to use this battery...
http://www.batteryspace.com/index.asp?PageAction=VIEWPROD&ProdID=4205

And if that battery won't cut it as far as being only 3.2V. I'm just going to use 2 X normal size D-cell Li-Ion's to get 6.4V.

And I'm only needing at least one hour run time, per charge. But will take as much as I can get.
 
billg519 said:
Kenom:

I used 2 x 25500 lithiums (in parallel) for the laser in the attached photo.
It is 960nm and puts out about 3.5 watts.
Battery life is not too bad so far.
Diode is c-mount, rated 4 watts, so diode life should be good.
Click to expand...
Holy Gosh!! How do you collimate it? That is amazing!!!
 
Midknight :

If 5250 ma is close enough, try the following. Get 3 x DX 1400ma flashlight current regulators, and also one 1050 ma. This adds up to 5250ma and will be a compact unit. Assemble the stack as in my photo in my earlier post above. These are great regulators because they are negative side regulators. C-mount diodes are usually positive ground devices, so a negative side regulator is convenient for ease of construction of the final unit. You seem to have a nice diode there. Should give you a great laser! This regulator would only require one D-cell lithium to run the laser.

Spyderz20x6 :

Believe it or not, this diode actually collimates, at close range for burning, with an Aixiz glass lens.
I simply put the lens in my own machined focussing assembly. I am making a twin for my 4 watt 960 nm handheld, this twin will be an 808 nm 4 watt. Machining and anodizing are completed, diode is in laser head and aligned, just need to complete assembly and test. These things burn stuff !
I can't wait to get going on my next project, 808 nm 20watt handheld.
 
billg519 said:
Midknight :

If 5250 ma is close enough, try the following. Get 3 x DX 1400ma flashlight current regulators, and also one 1050 ma. This adds up to 5250ma and will be a compact unit. Assemble the stack as in my photo in my earlier post above. These are great regulators because they are negative side regulators. C-mount diodes are usually positive ground devices, so a negative side regulator is convenient for ease of construction of the final unit. You seem to have a nice diode there. Should give you a great laser! This regulator would only require one D-cell lithium to run the laser.

Spyderz20x6 :

Believe it or not, this diode actually collimates, at close range for burning, with an Aixiz glass lens.
I simply put the lens in my own machined focussing assembly. I am making a twin for my 4 watt 960 nm handheld, this twin will be an 808 nm 4 watt. Machining and anodizing are completed, diode is in laser head and aligned, just need to complete assembly and test. These things burn stuff !
I can't wait to get going on my next project,[highlight]808 nm 20watt handheld.[/highlight]
Click to expand...
WHAT?!?!?  :o
 
billg519 said:
Midknight :

If 5250 ma is close enough, try the following. Get 3 x DX 1400ma flashlight current regulators, and also one 1050 ma. This adds up to 5250ma and will be a compact unit. Assemble the stack as in my photo in my earlier post above. These are great regulators because they are negative side regulators. C-mount diodes are usually positive ground devices, so a negative side regulator is convenient for ease of construction of the final unit. You seem to have a nice diode there. Should give you a great laser! This regulator would only require one D-cell lithium to run the laser.

Spyderz20x6 :

Believe it or not, this diode actually collimates, at close range for burning, with an Aixiz glass lens.
I simply put the lens in my own machined focussing assembly. I am making a twin for my 4 watt 960 nm handheld, this twin will be an 808 nm 4 watt. Machining and anodizing are completed, diode is in laser head and aligned, just need to complete assembly and test. These things burn stuff !
I can't wait to get going on my next project, 808 nm 20watt handheld.
Click to expand...

I could get away with only 3.2V?

Are you going to use some TEC with that 20W hand held? Thats a lot to heat sink.
 
HumanSymphony said:
[quote author=billg519 link=1219808788/20#23 date=1220664777]Midknight :

If 5250 ma is close enough, try the following. Get 3 x DX 1400ma flashlight current regulators, and also one 1050 ma. This adds up to 5250ma and will be a compact unit. Assemble the stack as in my photo in my earlier post above. These are great regulators because they are negative side regulators. C-mount diodes are usually positive ground devices, so a negative side regulator is convenient for ease of construction of the final unit. You seem to have a nice diode there. Should give you a great laser! This regulator would only require one D-cell lithium to run the laser.

Spyderz20x6 :

Believe it or not, this diode actually collimates, at close range for burning, with an Aixiz glass lens.
I simply put the lens in my own machined focussing assembly. I am making a twin for my 4 watt 960 nm handheld, this twin will be an 808 nm 4 watt. Machining and anodizing are completed, diode is in laser head and aligned, just need to complete assembly and test. These things burn stuff !
I can't wait to get going on my next project,[highlight]808 nm 20watt handheld.[/highlight]
Click to expand...
WHAT?!?!?  :o[/quote]

(\_(\  (\__/)  /)_/)
(=':') (='.'=) (':'=)
(,(')(')(")_(")(')('),)
 
Well, why not make a 20 watt? I have the diode already. It's sitting in a drawer doing nothing. Time to put it to good use. It will take me a while to create this monster and it certainly won't be tiny. Should be a fun project. Certainly be a laser not too many people have. I'll be finishing the 808nm 4 watt first, though.

As far as cooling goes, I'll use conduction cooling, heatsink being the entire machined aluminum body.
Short duty cycle will be enforced by a timer circuit in the driver. May work a little fan in there too.

Midknight : Needs lithium that is 3.6 volt type (charges to 4.2v) for the above regulator. You can also, when battery considerations allow, use the LM317 circuit, but substitute an LM338 for up to 6a capacity if well heat sunk.
 
jamilm9 - Yes, it would definitely fit in there! That is one big host with lots of battery capacity! Six D-cell lithiums in parallel would last at least a short while. I may, however, make my own host up from aluminum stack that I have on hand. Finished size will be around 2.5" diameter, 12'" long.

midknight - looking forward to seeing your 5 watt when it's going. The attached photo shows the very first IR build that I ever did, completed April 19, 2008, it is a 1 watt 808 nm 9mm closed can diode laser. I put the 9mm diode in an aixiz housing by drilling the diode hole bigger so the 9mm would fit on the end of the housing. The current regulator is in the gold colored heatsink cut from a piece of shower stall aluminum moulding. It used LM 350 in normal LM317 driver schematic. LM350 can take up to 3a. Batteries are 2 x 18650 lithium. Assembled with electrician's tape, this was a great prototype that was fun to fire up. Nothing fancy, it worked great. That diode is still in the aixiz housing, but now is in an aluminum host using a single 18650 to power it. Just redid it.
 

Attachments

  • Apr1908_095_1.jpg
    Apr1908_095_1.jpg
    80.7 KB · Views: 592
billg519 said:
jamilm9 - Yes, it would definitely fit in there! That is one big host with lots of battery capacity! Six D-cell lithiums in parallel would last at least a short while. I may, however, make my own host up from aluminum stack that I have on hand. Finished size will be around 2.5" diameter, 12'" long.

midknight - looking forward to seeing your 5 watt when it's going. The attached photo shows the very first IR build that I ever did, completed April 19, 2008, it is a 1 watt 808 nm 9mm closed can diode laser. I put the 9mm diode in an aixiz housing by drilling the diode hole bigger so the 9mm would fit on the end of the housing. The current regulator is in the gold colored heatsink cut from a piece of shower stall aluminum moulding. It used LM 350 in normal LM317 driver schematic. LM350 can take up to 3a. Batteries are 2 x 18650 lithium. Assembled with electrician's tape, this was a great prototype that was fun to fire up. Nothing fancy, it worked great. That diode is still in the aixiz housing, but now is in an aluminum host using a single 18650 to power it. Just redid it.
Click to expand...

LoL!

Thats neat.
 
Damn, I also want a super IR burner, but still don't have the funds :-/

As far as the 20W handheld goes, there is a japanese guy , I think, on youtube that already made something like that.Just can't help to wonder how would that laser-gun look if it had another YAG rod + KTP attached. ;D Should be good for a 3W greenie :D
Come to think of it, even the 5W would be good for around 1W of green, pretty cool nontheless. ::)
 
You must log in or register to reply here.


Back
Top