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Old 01-29-2012, 08:41 AM #1
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Default Red 5mw 650nm from Aixiz pin layout?

Hi all,

I've bought myself a Raw diode 650nm Red 5mw from Aixiz
5mw 650nm laser diode 5 pack, AixiZ

I'm a little unsure about the pin layout for the diode.

I've created a DDL circuit with 21ma output and done a test load circuit of 3 diodes to get a 2.1 voltage on all 3 of them. All looks great and fine.

Now looking at the Pins of the red diode I've hooked up the Positive to the Pin 1 of the diode and the ground to Pin 2. I get nothing?

On the diode itself there are 2 pins which have darker circle on the base at the end of the pin, which are PIN 1 LD and PIN 3 PD. The PIN 2 Ground has no dark circle on the base of it.

Now, if I remove my 1N4001 diode( the white band was connected to the positive and the other end to the ground) and hook the PIN 2 to positive and PIN 1(LD) to ground I get it to work fine. ??

What am I doing incorrect here? I must be missing something here :|

I also tried hooking up the PD (Pin3) and LD (Pin 1) up, with nothing to ground, this also worked? :|

Also the laser outputs a sort of a wide (horizontal or vertical) beam when hooked up? Is this normal? I will be using a lens to focus it, when it arrives in the mail!
I'm new to the whole world of electronics and lasers! So be gentle with me
Cheers
jag2x


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