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Old 17th July 2012, 06:57 PM   #1
diyAudio Member
 
Join Date: Apr 2012
Default Audio DSP Power Supply

Hi, this is my official first post here, but i'm here from long time ago, as simple reader!

I've decided to finally write because i need some advice from someone with more experience, so who better than you?

My current project is a complete guitar/bass floorboard, and by complete I mean:

-Some analog effect (distortion&co.)
-Looper
-Tuner
-Digital Effect (using an FPGA + CS4272)
-25W Poweramp

There is some video here: (really the worst audio recording ever)
Growboard demo - YouTube
Codec board - YouTube

What's the advice i need?

I have some roads to run for the power supply!

Transformer inside
1 230 -> 15 - 0 - 15 -> 12DA 0V -12DA

Transformer outside
2 9VAC -> 12VDA by LDO
9VAC -> -12VDA by LDO

Transformer + rectifier outside
3 18VDC -> 12VDA by LDO
18VDC -> -12VDA by switching

Switching regulator outside
4 18VDC -> 12VDA by LDO
18VDC -> -12VDA by switching

Transformer + rectifier outside
5 5VDC -> 12VDA by switching (maybe double channel)
5VDC -> -12VDA by switching

Switching regulator outside
6 5VDC -> 12VDA by switching (maybe double channel)
5VDC -> -12VDA by switching

The +-12 rails will power the codec opamp and some other analog effects!

What road will you along?

Last edited by politoleo; 18th July 2012 at 05:16 AM.
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Old 17th July 2012, 07:22 PM   #2
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Join Date: Apr 2012
I can't see the trhead anymore!
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