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

LPF Donation via Stripe | LPF Donation - Other Methods

Links below open in new window

ArcticMyst Security by Avery

405nm Build

future engineer

future engineer

0
Joined
Apr 23, 2011
Messages
15
Points
0
So I bought this PHR-805 HD diode OEM 405nm !!! HIGH POWER !! [PHR805] - $16.99 : StoneTek Electronics, Your Laser Parts Store, and hooked it up to this 405nm 100-300mw Laser Diode Driver Reverse Protection - eBay (item 220769098809 end time May-13-11 03:00:46 PDT), and plugged a cr123 battery into it, not to surpass the 3.7v limit, and crap. It puts out a beam that doesn't project further than 3", and it's dim as hell. Help please.
:banghead:
And before you say search the forum, you do it, click on the first page of responses and see how many are just replied to as,"search the forum." It's frustrating.
 





future engineer

future engineer

0
Joined
Apr 23, 2011
Messages
15
Points
0
Oh, forgot to mention. Output v was 7.35, and .02a without diode connected, With it connected output was 3.74, .02a.
 
Jufran88

Jufran88

0
Joined
Feb 9, 2011
Messages
578
Points
0
Well, can't tell you too much, but have you tried testing it with a dummy load and adjusting the current with the pot .
 
future engineer

future engineer

0
Joined
Apr 23, 2011
Messages
15
Points
0
With that boost driver, will it amp up the light output? Im looking for something similar to a 200ma laser.

Haven't hooked up a dummy load, could you elaborate?
 
future engineer

future engineer

0
Joined
Apr 23, 2011
Messages
15
Points
0
Hmm... I know what I want to say, just don't know how to say it. Is there a way, with this diode, to make a laser that has burning capabilities, and is visible in day light?
 
Coherent Light

Coherent Light

0
Joined
Jul 17, 2010
Messages
2,160
Points
0
NO!!! A PHR will never be bright enough to see in daylight. You will need a 100mW+ Green module or a multi-watt 445 to be visible in the day time. Even a 405nm at 700mW probably won't be visible in a brightly lit room.
 
lazeerer

lazeerer

0
Joined
May 25, 2010
Messages
3,655
Points
0
Did you make sure to set the driver to the correct currant.?:thinking: I dint see you say that.?

Do you have a testload to set your driver to the correct currant.

Not every diode has the same currant. Who knows what the driver came to you set at. You could have either Killed your diode because the driver was set to higher then the PHR needed or if you are lucky the currant was lower then you needed and that is why its dim and the driver just need to be turned up.

However you need a testload to do this. DO you have one.?

You can see a PHR beam during the day but only with fog in the air.:)
 
Last edited:
future engineer

future engineer

0
Joined
Apr 23, 2011
Messages
15
Points
0
No, I do not have a testload. What would be the correct current for a phr-805, and how would I adjust the driver I have?
 
Jufran88

Jufran88

0
Joined
Feb 9, 2011
Messages
578
Points
0
That's your problem. You need a test load/dummy load to test the current going to the LD before you hook it up to the actual laser diode.

Use 6 1N4001 diodes in series with a 1 ohm resistor in series with the other diodes and use a multimeter between the resistor to test the current.

You adjust the current by turning the pot on the driver you bought.
 
lazeerer

lazeerer

0
Joined
May 25, 2010
Messages
3,655
Points
0
Thats your Problem.

Hopeful you dint blow your diode and we can set your laser up. However you will need a testload.

A testload is used in place of the diode to set the driver at the correct currant for your laser diode.

You will need to build a test load here:
http://laserpointerforums.com/f51/445nm-test-load-questions-53839.html

You will need 6x 1NXXX Diodes and 1x 1ohm resistor.

If you dont want to make your own you can buy one here:
Laser driver dummy load (test red or blu-ray) [M0001] - $10.99 : Modwerx Shop

Or i can build you a 3A one. PM me if interested. "i have all the parts":)

Here is a very detailed thread on the PHR-805 diode.
http://laserpointerforums.com/f38/phr-805-405nm-diodes-replace-phr-803ts-62591.html

Once you build or get this we can go from there. It is a must have.
 
Last edited:
You must log in or register to reply here.




Top