Strange LD

[Rafa]

Hey all

I just dissasembled an old dvd reader and i found this LD:

What should i do with these 4 pins?

Thanks.

 

[daguin]

Hey all

I just dissasembled an old dvd reader and i found this LD:


What should i do with these 4 pins?

Thanks.

Throw them into the trash. Buy an LPC or a PHR for $10. Build a laser

Peace,
dave

 

[billg519]

That 4 pin diode is likely a combo red and IR, so it can read DVD or CD. This will be a weak (less than 5mW) diode. Maybe useful to practice diode harvesting, but that's about it. You really need a burner diode in order to make a good laser, such as the PHR or LPC that Dave suggested.

 

[Rafa]

Thanks all, I'm going to do what dave said because I fried the red diode and i don't need / want a IR one. It worked for about 30 seconds and then it didn't worked anymore. It's the first diode I make work

 

[Greenmechanic]

Thanks all, I'm going to do what dave said because I fried the red diode and i don't need / want a IR one. It worked for about 30 seconds and then it didn't worked anymore. It's the first diode I make work

Did you use a driver or hook it straight up to a battery?
You have to have a way of limiting current to the diode.

You can build a driver for about $6 in parts from Radioshack.

Go here to see how to build one.
It can be done - Laser driver

As Dave stated, buy a real diode, LOC, LCC, PHR, then try again.
For more info on what these LD's are, and what they require to operate properly, search for the above abbreviations.:thinking:

 

[Rafa]

Did you use a driver or hook it straight up to a battery?
You have to have a way of limiting current to the diode.

You can build a driver for about $6 in parts from Radioshack.

Go here to see how to build one.
It can be done - Laser driver

As Dave stated, buy a real diode, LOC, LCC, PHR, then try again.
For more info on what these LD's are, and what they require to operate properly, search for the above abbreviations.:thinking:

Yeah, I used a homemade linear driver I built for about $2 (1,70€).
I just used this one because the DVD drive broke, so I wanted to test if the diode worked, but I supplied too much current (changing pot's value) and I fried up the diode
Anyway a 20X Red LG LD is on the way to my home
I'm sure I will not fry this one.

 

[Greenmechanic]

Yeah, I used a homemade linear driver I built for about $2 (1,70€).
I just used this one because the DVD drive broke, so I wanted to test if the diode worked, but I supplied too much current (changing pot's value) and I fried up the diode
Anyway a 20X Red LG LD is on the way to my home
I'm sure I will not fry this one.

Great! At least you knew (read) enough to use a driver. You wouldn't believe how many people just hook the LD up to a battery.
Good luck, and make sure you use a test (dummy) load to set your driver, before hooking up the 20X diode.
BTW: Just in case you don't know, info. on how to build a test load is on the same link I gave you earlier.

 

[Rafa]

Great! At least you knew (read) enough to use a driver. You wouldn't believe how many people just hook the LD up to a battery.
Good luck, and make sure you use a test (dummy) load to set your driver, before hooking up the 20X diode.
BTW: Just in case you don't know, info. on how to build a test load is on the same link I gave you earlier.

Yeah I always read info before doing almost anything
And kipkay is one of these people lol... he is so lucky...
Thanks for the link!

bye