Never-Connected power supply - Page 3 - diyAudio
Go Back   Home > Forums > Amplifiers > Power Supplies

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 7th December 2003, 09:17 PM   #21
jcarr is offline jcarr  United States
diyAudio Member
 
Join Date: Jul 2002
Location: Tokyo, Japan
>the only excuse for not using batteries is the requirement for too high Voltages to run Valve Circuits<

Another excuse could be the sound quality. I have a commercial, battery-powered IC-based phono amp which sounds rather good for what it is and what it costs. But when I compare it to an AC-powered IC-based phono amp prototype (with shunt regulation) that I have been working on, the AC prototype runs rings around the battery phono stage.

Obviously, the other differences in design and implementation count for a lot, and so do personal preferences, but you should not assume that battery operation is any kind of panacea.

jonathan carr
__________________
http://www.lyraconnoisseur.com/, http://www.lyraaudio.com
  Reply With Quote
Old 7th December 2003, 11:49 PM   #22
djk is offline djk
diyAudio Member
 
djk's Avatar
 
Join Date: Feb 2001
Location: USA
Batteries (chemical reaction) are SLOW.

Power supply by-pass caps may be even more important with battery supplies than line operated supplies.

I had a handheld HP meter that would not work with a 9V alkaline battery, it was designed with a mercury battery. A call to HP had me adding power supply by-pass caps and then the meter worked properly. Forunately they had had this problem before, and had all the values and locations worked out.
  Reply With Quote
Old 11th December 2003, 09:36 AM   #23
diyAudio Member
 
Join Date: Dec 2003
Location: Lisbon, Portugal
For anyone that's interested, here's a picture of a Never-Connected PSU:

Click the image to open in full size.

I have one in my Teac T1 CD transport powering my Trichord Clock4 clock upgrade. How much difference it makes is hard to say but the person who did the mods for me (who is a friend) swears by them and says that powering the clock with a Never-Connected PSU improved things as much, if not more, than doing the clock upgrade alone.

Michael.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
paralleling computer power supply outputs: can they be connected in parallel... jarthel Parts 7 12th December 2012 09:13 PM
Never Connected HR Supply circuit Algar_emi Analogue Source 37 6th September 2008 03:05 AM
iam getting radio singal when power amp is connected to waal socket ground prorms Solid State 1 22nd April 2008 07:53 PM
heater supply (xformer specs are 6.3V 2.5A) as supply for a power LED? jarthel Tubes / Valves 10 21st July 2003 01:30 PM


New To Site? Need Help?

All times are GMT. The time now is 01:24 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2