Computer Audio Asylum

RE: Thanks for the details & more questions

84.174.64.100

[ Follow Ups ] [ Post Followup ] Thread: [ Display  All  Email ] [ Computer Audio Asylum ]

Good evening Rick, (it is 09:50pm here in germany now)

your question:
When you used the battery, I am assuming a SLA type (sealed lead acid), did you use the biggest one you could find? What rating did you try? Many good things are said about the OPTIMA RED TOP batteries.

reply:
i only have a small SLA-type battery. i feared to spend more money for a realy big one just for testing. the battery has a capacity of 9Ah. after 1 hour the pleasure is over.

your thoughts:
I have never heard anything good said about a dc-dc converter other than they do what they are supposed to do. I would think a really good shunt regulator would be the best approach for the CPU and for the sound card. I am not capable of designing such a thing. There is someone who is and when he finds time to get more involved in this he might.

my findings:
the dc/dc converter was laying around i simply used it. in the past i tested serveral PSUs and got a feeling how ripple-voltage and -noise affects SQ. i could not recall those feelings while using the dc/dc-converter. sure, ripple should be measured, i am on it..

question:
Are you regulating the battery power? Please clarify.

reply:
during my tests i used a PSU with adjustable output-voltage.

question:
When you used the battery power (I am assuming for the ATX header) when did you plug it in? Before or after turning on the ANTEC? Did you disocnnect the 12 volts leads from the ANTEC for the main power header? I am not clear on whether the ATX and the regular header are interconnected in any way?

reply:
Rick, now i understand your irritation! the dc/dc-converter is a complete tiny atx psu with a single 12v (max 25v) input and 3.3v, 5v, 11.97v output. so the hole system is driven by battery and there is no antec PSU involved.
Sorry, i was so much focused on "this a dc/dc-converter" i forgot to mention, that it is is an atx-psu also.

Bernd




Follow Ups:

Post a Followup:

FAQ

Post a Message!

 Forgot Password?
Moniker (Username):
Password (Optional):
  Remember my Moniker & Password  (What's this?)    Eat Me
E-Mail (Optional):
Subject:
Message:   (Posts are subject to Content Rules)
Optional Link URL:
Optional Link Title:
Optional Image URL:
Upload Image:
E-mail Replies:  Automagically notify you when someone responds.

[ Follow Ups ] [ Post Followup ] Thread: [ Display  All  Email ] [ Computer Audio Asylum ]
[ Comment ] [ Edit ] [ Delete ] [ Copyright Warning! Click for Details ]
[ Top Top of Page ] [ Contact Us ] [ Support/Wish List ] [ Copyright © 2008, Audio Asylum, all rights reserved ]
[ General ] [ Speakers ] [ Tubes ] [ Vinyl ] [ Digital ] [ Hi-Rez ] [ Video Asylum ] [ Cables ] [ Tweaks/DIY ] [ Music ] [ Films ]