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-   -   Need help with power supply, ~12v source: 9v, 5v, and 3.3v ouputs (http://www.diyaudio.com/forums/power-supplies/63446-need-help-power-supply-12v-source-9v-5v-3-3v-ouputs.html)

mbcouple 30th August 2005 09:45 PM

Need help with power supply, ~12v source: 9v, 5v, and 3.3v ouputs
 
I am trying to build a power supply to power some pro-audio gear in the car. I will probably use one of the many modified jung regulators for the 5v and the 9v, but what should i use for the 3.3v? There is quite a bit of ripple and noise comming from the alternator, so i will need a good pre-regulator. Should i just use one of the lm3940's i have lying around and feed it with the output of the 5v "jung" regulator? Any suggestions on any of the supplies would be useful. So to sum it up, i have the fluctuating car power to deal with say from 12v-15v and from there i need +9v, +5v, and +3.3v.
Thanks
Hans

Eva 31st August 2005 09:07 PM

I may have what you want.

Check this post : http://www.diyaudio.com/forums/showt...494#post698494

mbcouple 2nd September 2005 05:07 PM

How do i contact you

Eva 2nd September 2005 06:19 PM

Mail me at "evita|eslamejor|com"

Replace the first "|" by "@" and the second "|" by "." (just to avoid automatic email collectors).


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