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

PHR-803t doesnt work

U

ultimatum

0
Joined
Sep 24, 2009
Messages
35
Points
0
Hellooo

I took up my work on lasers again after a long break...I've tried to get my phr's working again but it doesnt work either.

Configuration is:
-9 Volt battery, fully charged
-rckstr driver set to 100mA with Testdummy

It didnt work...dont know the problem, thats the question.

But I made an interesting experience: I connected a 16x Sony Red burner diode to the circuit and it putted out a dim light. (I know the voltage was too high).
I turned the potentiometer to perhaps 400mA and the diode became only a bit brighter, but not very much. Is the red diode damaged? Or is sth wrong with my driver?

Greets and
merry christmas!
 





Driver is less likely to be damaged, however, diodes are MOST likely faulty.
The red one is definetly dead, at 400 mA it should put out blinding amount of red light.

PHR violet diode also should lase at 100 mA (that is the current I set my PHRs at).
You see, the INPUT voltage doesn't matter when using linear driver like rckstr (that thing is using LM1117 regulator, similar to LM317 except it has only 1.2 Vdrop), when you set the current, the driver automatically suplies enough voltage. The rest is burned off as heat, effectivly regulating the power to your laser diode.

Basically, using rckstr driver with 9V is simply this: if you use a violet diode, set it to 100 mA and hook it put,
If you use LCC/LOC red, set it to 350 or 400 mA, and hook it up!
OUTPUT voltage will be set automaticaly.

BOTOMLINE: I'm sorry but there is a very high chance your diode is dead. Either that is your battery is dead.

BTW merry Christmas! :p
 
Umm... not exactly. As we all know 9v batteries are very inefficient in putting out a lot of amps for along time. The reason your PHR is not working is a mystery, if done correctly even with a 9v battery you should see light. The red on the other hand should be still good. You need to use some rechargeable batteries like the 10440's. The driver has a 1.2v VF an the diode has ~3V so I suggest 3x 10440 batteries which is ~12.5v... when under load it will be more like 9-10v but at higher mah, this is enough for this type of build. The battery you are using would typically be putting out 5-6v which when fully charged is not really enough to get this going.

I'm also assuming you have this laser in a project box. I suggest Jayrob's 3405 MXDL host. It has room for 3x 10440 batteries and also has enough room for a full aixis module.... so space it not a factor. It will also help greatly with heatsinking for that 400ma red... which really do get warm very quickly.

Hope this helped! -Adrian
 
When you connected the diodes, did you make sure that any output cap on the driver board was discharged prior to soldering the diode? As Adrian said, you should get lasing at 100mA with a PHR using a 9V battery. The 3 x 10440 is a good power source for PHR's. If your driver has a max input of 12V, you can ensure that the 3 x 10440 never exceed this by putting a 1N400X diode between battery positive and the positive input connection to the regulator, as a voltage drop diode. Two lithium batteries in series (8.4V) is enough for a red LOC.
 
Can you give a link to a 1n400x diode and how do you solder it in series like you connect it to the driver? or how? Can you explain in more detail i'm not really getting it
 
1n400x means any diode from that series, there are 1n4001 to 1n4007 rectifier silicon diodes.
Any will do just fine.
Like any diode it has anode and cathode, and it conducts current in only one direction. However these silicon diodes have about 0.7 volts of voltage drop (Vdrop), there fore effectivly substracting 0.7 volts from the bateries total voltage.

Just connect it in series between batteries and driver w/ laser diode.
 
You would normally have a red wire going from battery positive contact to the positive input of the driver board, assuming a laser with a tailcap clicky switch. You would replace this red wire with the silicon diode. If you get the diode in backwards, the laser will not turn on, no damage will be done, just reverse the diode. These are usually small black diodes with a silver or gray band near one end. The end with no band goes towards the battery positive, the banded end goes to the driver positive input.
 
So just one diode in the positive wire will do the trick? Do i solder the diode directly to the driver? or can i have wire>diode>wire to driver
 
Also, i don't recall reading anything in this thread
regaurdinig how you have your violet diode wired
up. Are you positive the diode is wired to the driver
correctly, as it is different than the red diode you
also tested.
 
Yeah, the UNUSED pin on violet diodes is the middle one, that is connected to case.
If you look at your diodes' pins this way:
*
____*
*

Then it is :
positive
unused
negative
FOR VIOLET DIODES!
 
Thank you very much for all your answers!!!
Yes I wired it correctly, but it can be that I touched the diodes wrong for a moment with the wires so they were damaged, since I dont have a host and I didnt solder it to the wires.
I will try one more time with a 12V adaptor from my portable speakers.
And if it doesnt work, Ill get a pre-installed diode in aixiz module and a new driver.

Regards

Ultimatum
 
ultimatum said:
Thank you very much for all your answers!!!
Yes I wired it correctly, but it can be that I touched the diodes wrong for a moment with the wires so they were damaged, since I dont have a host and I didnt solder it to the wires.
I will try one more time with a 12V adaptor from my portable speakers.
And if it doesnt work, Ill get a pre-installed diode in aixiz module and a new driver.

Regards

Ultimatum
Click to expand...
Once the power is supplied, YOU NEVER DISCONNECT or CONNECT a laser diode.
The capacitor will kill it, along with the power surge!
The diode is always soldered before powering up.
 
Eudaimonium said:
Once the power is supplied, YOU NEVER DISCONNECT or CONNECT a laser diode.
The capacitor will kill it, along with the power surge!
The diode is always soldered before powering up.
Click to expand...

!!! Then I suggest this is was what Ive done wrong !!!

And were do I close the circle? Between battery negative and driver negative?

Thank you very much
cheers
 
ultimatum said:
!!! Then I suggest this is was what Ive done wrong !!!

And were do I close the circle? Between battery negative and driver negative?

Thank you very much
cheers
Click to expand...
Between battery and driver yes. Wether it is negative or positive depends on a driver.
However you should always make the switch right next to battery.
 
You must log in or register to reply here.





Back
Top