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Registered Member #27
Joined: Fri Feb 03 2006, 02:20AM
Location: Hyperborea
Posts: 2058
I have seen 140mW lasers being sold by manufacturers for 48X drives. If you look at the speed the plate is moving you know the power must be significant. 7200 rpm makes for about 42 m/s.
Registered Member #56
Joined: Thu Feb 09 2006, 05:02AM
Location: Southern Califorina, USA
Posts: 2445
The dvd burner diodes are of course red instead of IR. I am not sure how the power compares, I would assume (for the same speed drive) they are similar.
Just remember that if you want to go out and buy a dvd-r to salvage the laser that the speed of the drive it pretty much directly proportional to the laser power. The 1x video recorders have very week diodes, while the super fast dvd drives have 100mw ones...
Registered Member #134
Joined: Fri Feb 10 2006, 10:44PM
Location: Belgium
Posts: 86
Hmm nice!
I just opened up an old cd-r drive, and the laser worked perfectly (just to test it, I ran it on two batteries and a small resistor) untill a couple of seconds ago... I guess I applied too much voltage / current or something. I'm definitely going to look for a DVD-(R-)drive for more laser fun!
Registered Member #103
Joined: Thu Feb 09 2006, 08:16PM
Location: Derby, UK
Posts: 845
I have an old DVD recorder with TV tuner built in. It's in a right tatty state and has had the power cord cut off - so I might as well pull it to bits for the diode. It's only a single speed though by the looks of it, so probably not much use.
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What to do with CD-ROM drive laser
