CT phono power supply - diyAudio
Go Back   Home > Forums > Source & Line > Analogue Source
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Analogue Source Turntables, Tonearms, Cartridges, Phono Stages, Tuners, Tape Recorders, etc.

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
Thread Tools Search this Thread
Old 11th August 2006, 09:43 PM   #1
modder is offline modder  New Zealand
diyAudio Member
Join Date: Feb 2006
Location: NZ
Default CT phono power supply

I have a center-tap +v15 and -v15 power supply driving a phono preamp. I am trying to sort out earthing.

1. What happens to a CT power supply if the CT is connected to true earth ?
Does it blow up ?!
2. If the CT it is not connected to true earth is this what is called a "floating earth" ?

I've done the following so far - most beneficial:
1. reduce ripple to the voltage regs
2. use Rubycon ZA caps after the regs
3. use Eichmann interconnects - this has been the most striking improvement. Total removal of a deep roar when preamp (not phono) is turned up to full volume.
  Reply With Quote
Old 13th August 2006, 08:26 PM   #2
modder is offline modder  New Zealand
diyAudio Member
Join Date: Feb 2006
Location: NZ
Default diodes

To answer my question ........
I noticed the CT is connected to true earth through 2 zener diodes, back-to-back, presumably to keep out RF (and a small ceramic cap).
  Reply With Quote


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
Power Supply for Aikido Phono Pre Binaural Tubes / Valves 16 9th November 2008 07:45 PM
Power supply for 12SL7 phono preamp HawkSpeed Tubes / Valves 28 25th June 2008 03:00 AM
power supply for phono stage carlos671 Parts 0 5th February 2006 10:55 PM
Power supply for Pearl phono mattjk Pass Labs 6 11th February 2005 08:25 PM
Pearl Phono power supply Gregorio Pass Labs 1 13th October 2004 06:12 PM

New To Site? Need Help?

All times are GMT. The time now is 11:43 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2