flecom
1000+ Head-Fier
- Joined
- Jul 21, 2004
- Posts
- 1,424
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- 13
just an FYI for anyone who has this great drive... a lot of the noise is from the rather meh switching power supply...
the ratings on the top of the cd-rom are +5 @ .8A and +12 @ 1.6A
now i wanted to make a really simple regulated PSU (think LM317)
but 1.6A is too much for the average LM317.... but i know that ratings on just about everything are usually lies
anyway... hooked up my DMM and while playing CD audio, ejecting/injecting the cd caddy, skipping tracks, spin up everything i could think of doing with the drive i couldent get the +5 to go over ~.4A and the +12 never went over ~.8A so i built a dual LM317 PSU (one for +5 and one for +12) and now even the headphone jack on the front of the CD-rom sounds damn nice!
regulators are heatsinked and get warm to the touch but by no means alarmingly warm... the circuit i used was the basic STEPS/LM317 datasheet style PSU... input was from a +18v 3A wall wart from an hp officejet
the ratings on the top of the cd-rom are +5 @ .8A and +12 @ 1.6A
now i wanted to make a really simple regulated PSU (think LM317)
but 1.6A is too much for the average LM317.... but i know that ratings on just about everything are usually lies
anyway... hooked up my DMM and while playing CD audio, ejecting/injecting the cd caddy, skipping tracks, spin up everything i could think of doing with the drive i couldent get the +5 to go over ~.4A and the +12 never went over ~.8A so i built a dual LM317 PSU (one for +5 and one for +12) and now even the headphone jack on the front of the CD-rom sounds damn nice!
regulators are heatsinked and get warm to the touch but by no means alarmingly warm... the circuit i used was the basic STEPS/LM317 datasheet style PSU... input was from a +18v 3A wall wart from an hp officejet
