Where to get the specs for all the various dvd lasers

Greetings,

How does one find the electrical specs on a dvd laser - for example if you receive and old machine, sometimes it not even obvious to me what the speed of the dvd writer is or anything about its laser.

Achilleus said:

Greetings,

How does one find the electrical specs on a dvd laser - for example if you receive and old machine, sometimes it not even obvious to me what the speed of the dvd writer is or anything about its laser.

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Try searching the dvd drives company. Maybe their website will have information.

If all else fails, a variable current/variable voltage bench power supply, a clamp on heat sink, a pencil, and some paper is a good start ( a decent optical power meter is nice too).
It's gonna be tough finding manufacturers datasheets when you can't even get a part number for the diode.