Grounding: Earth and Center Tap - Page 2 - diyAudio
Go Back   Home > Forums > General Interest > Everything Else
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

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 11th April 2012, 12:10 AM   #11
diyAudio Member
 
Speedskater's Avatar
 
Join Date: Sep 2002
Location: Lakewood, Ohio
"Legis" there are different types of AC power systems in different parts of the world. Where will this transformer be used?
__________________
Kevin
  Reply With Quote
Old 11th April 2012, 07:09 AM   #12
Legis is offline Legis  Finland
diyAudio Member
 
Legis's Avatar
 
Join Date: Dec 2009
Quote:
Originally Posted by Speedskater View Post
"Legis" there are different types of AC power systems in different parts of the world. Where will this transformer be used?
Hi Speedskater, EU 230V/50Hz.
  Reply With Quote
Old 14th September 2015, 08:18 AM   #13
JAY X is offline JAY X  Spain
diyAudio Member
 
Join Date: Aug 2010
Hi Andrew!

I also get confused but i try to do it right...because most PSU designs show the secondary floating.

Lets see:

Supose we have a separated psu board to supply current to the audio boards.

AC inlet main ground (safety ground) to chassis. This is clear and mandatory.

TRANSFORMER SECONDARY (18-0-18): Establishes the 0v center tap.

The 0v point after the last rectifier capacitor... ¿¿must be linked to the chassis near or at the same point as the safety ground....???? ¿directly with a wire link? ¿or thru a capacitor? these are my questions....

¡Thank you for for your help!

Jay X
  Reply With Quote
Old 16th September 2015, 09:30 AM   #14
DF96 is online now DF96  England
diyAudio Member
 
Join Date: May 2007
It is common to connect the circuit signal ground to the safety ground, but this should be done at one and only one point. The PSU output ground may or may not be the appropriate point. In any case, this connection should not use the same chassis point as the safety ground but may use a nearby point. I believe the reason for this is to reduce the risk of the safety ground being removed during faultfinding, and also to keep any fault currents away from the circuit.
  Reply With Quote
Old 16th September 2015, 04:07 PM   #15
JAY X is offline JAY X  Spain
diyAudio Member
 
Join Date: Aug 2010
Hi!

OK, it makes sense... now i see more clear!!.

Thanks!

Jay x
  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
Lions and Tigers and Grounding Problems, Oh My! DoZ Grounding... EchoWars Solid State 37 3rd August 2008 08:50 AM
LM3875 kit grounding, optimal grounding for separate amps and psu? findog Chip Amps 9 16th May 2005 09:27 PM
grounding heater/filament center metebalci Tubes / Valves 6 27th March 2004 08:24 AM
Center to Center of Drivers 29" apart in proposed config - Problems?? Ken L Multi-Way 14 3rd November 2003 12:49 PM


New To Site? Need Help?

All times are GMT. The time now is 07:43 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2016 DragonByte Technologies Ltd.
Copyright ©1999-2016 diyAudio

Content Relevant URLs by vBSEO 3.3.2
Wiki