Hi Folks! this is my first post here on this forum.
I hope that you will have mercy for me asking some basic questions since i havent really found the right answers yet on google and this forum.
The storry:
Ive ordered and received a cheapo 808nm 300mw
2.2V Diode Typ: TO18(5.6mm).
There was no data sheet or pinout given with my purchase.
The photo of the article shows 8809880 but is not printed on the actual diode i have received. But i think it is the same.
When i google the 8809880 i get this promising pdf:
http://www.eqphotonics.de/cms/cms/upload/datasheets/WSLD-808-300m-1-PD.pdf
If i interpret it correctly pin 2 is +
and pin 1 is - (negative) for the LD.
I measure 132kOhm from pin2 to pin1 (is that too much?)
and infinite resistence from pin1 to pin2 (that should be fine)
From pin 3 (photodiode?) i measure infinite resistance to everything else.
My plan:
I want to build a driver for the Laserdiode powered by 3xAA Batteries @ 1.5v
each eaqualing to 4,5v.
LM317T ,diodes, resistors and caps are at my hands as well.
My problem:
I havent understood yet if the pin3 of the diode is relevant or not.
Reading the pdf and researching on the net it is connected to a photodiode which saves the LD from frying and is possibly prohibiting th LD from emitting if not connected.
My questions:
-Is pin3 relevant for my plan? (id like to leave it out if possible and use this schematics: http://laserpointerforums.com/f42/diy-homemade-laser-diode-driver-26339.html)
-Are 3xAA Batteries giving 4,5v sufficient for driving the diode at full power?
-Is my diode faulty since i can only measure infinite resistance from pin3 to anything else an vice versa?
WELL i hope i expressed myself good enough for you to understand.
I thinks this is a very common diode and some of you have allready worked on it.
hope to hear from you soon,
ogee!
I hope that you will have mercy for me asking some basic questions since i havent really found the right answers yet on google and this forum.
The storry:
Ive ordered and received a cheapo 808nm 300mw
2.2V Diode Typ: TO18(5.6mm).
There was no data sheet or pinout given with my purchase.
The photo of the article shows 8809880 but is not printed on the actual diode i have received. But i think it is the same.
When i google the 8809880 i get this promising pdf:
http://www.eqphotonics.de/cms/cms/upload/datasheets/WSLD-808-300m-1-PD.pdf
If i interpret it correctly pin 2 is +
and pin 1 is - (negative) for the LD.
I measure 132kOhm from pin2 to pin1 (is that too much?)
and infinite resistence from pin1 to pin2 (that should be fine)
From pin 3 (photodiode?) i measure infinite resistance to everything else.
My plan:
I want to build a driver for the Laserdiode powered by 3xAA Batteries @ 1.5v
each eaqualing to 4,5v.
LM317T ,diodes, resistors and caps are at my hands as well.
My problem:
I havent understood yet if the pin3 of the diode is relevant or not.
Reading the pdf and researching on the net it is connected to a photodiode which saves the LD from frying and is possibly prohibiting th LD from emitting if not connected.
My questions:
-Is pin3 relevant for my plan? (id like to leave it out if possible and use this schematics: http://laserpointerforums.com/f42/diy-homemade-laser-diode-driver-26339.html)
-Are 3xAA Batteries giving 4,5v sufficient for driving the diode at full power?
-Is my diode faulty since i can only measure infinite resistance from pin3 to anything else an vice versa?
WELL i hope i expressed myself good enough for you to understand.
I thinks this is a very common diode and some of you have allready worked on it.
hope to hear from you soon,
ogee!