Grounding & board Layout questions - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

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 26th April 2007, 12:13 AM   #1
diyAudio Member
Join Date: Mar 2007
Question Grounding & board Layout questions


I know that the grid resistors for the output tubes should be mounted directly on the socket. But what are the other components that should also be soldered off the board i.e. on sockets etc.
I read somewhere that grid leak resistors should be soldered to the socket, what is a grid leak resistor & how can locate it on the schematic?

Iíve been told that PSís filter caps. As well as some other components (like output cathode caps.) Should be earthed directly to the star-point i.e. not to the boards ground wire to avoid ground loops. Is that true?

What should be a sufficient thickness for the ground wire?
  Reply With Quote
Old 26th April 2007, 03:56 AM   #2
diyAudio Member
Join Date: Oct 2004
Location: Adelaide South Oz
The grid stopper resistors (the series resistor to the input grid) of any tube should be mounted such that the resistor body is right up against the socket pin. They are the only "critical" resistors which need that. Note that for pentodes there will also be g2 stopper resistors and these should be mounted the same way - with the resistor body right against the socket pin. g2 stoppers are particularly important for the output tubes in Ultralinear Amps.

The grid leak resistors are the resistors which come from the other side (away from the socket) of the grid stopper resistors and wire back to either 0V or the bias supply. It doesn't matter where these grid leak resistors are.

  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
May I have some help regarding..Electrical safety,Star Grounding and Suggested Layout Tripmaster Chip Amps 69 10th April 2009 08:07 AM
Check my layout pls. for proper grounding (6 channel opamp pre) Groundloops Solid State 9 17th February 2008 08:35 PM
Grounding layout for double chasis - VBIGC Will Chip Amps 5 20th June 2004 08:50 AM
Multiple PCB layout & grounding. MWP Digital Source 5 23rd October 2002 04:12 PM

New To Site? Need Help?

All times are GMT. The time now is 11:08 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