Possible dead 803T diode?

[bradkirwan]

Hi all

I bought a PHR-803T laser diode in aixiz module from HighTechDealZ - High Tech DealZ and it arrived today, I connected it to a simplified DDL driver with just an LM317T and a 12 ohm resistor between ADJ and V-OUT pins. I then connected it to a 9V alkaline battery and nothing.

Have I done something wrong, I also tried using another 9V battery then a 9V DC power supply which outputs 500mA. Still nothing at all.

All the components are new, I have substituted resistors and the LM317T but still nothing, the connections are all good so I just don't know what is wrong.

Could I have a dud diode? What do you suggest.

Thanks

 

[Kevlar]

Did you use a capacitor to protect against spikes?

Did you use proper ESD procedures?

Did you double check all of your soldering joints?

Any pictures of your circuit?

 

[Rafa]

Are you sure sure you used the right pins?
Remeber PHR diodes are not the same as LOC and reds.

 

[bradkirwan]

Yes, I used proper ESD procedures, soldering joints were fine and I got HighTechDealZ - High Tech DealZ to solder the LD leads on which are fine.

No I didn't use a capacitor - but shouldn't it at least give off a glow?

 

[LaserNate]

My PHR I just received from hightechdealz doesn't work aswell, I am using a rkcstr micro drive set at 100mA.

 

[bradkirwan]

I guess this is the "fun" part of laser building...

 

[Bionic-Badger]

Did you test on a dummy load before hooking them up to your diode?