StarGround: where connect the ground pin of the Volume Pot - diyAudio
Go Back   Home > Forums > Amplifiers > Chip Amps

Chip Amps Amplifiers based on integrated circuits

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 19th May 2008, 11:26 AM   #1
ygg-it is offline ygg-it  Italy
diyAudio Member
 
Join Date: Feb 2008
Default StarGround: where connect the ground pin of the Volume Pot

Do you suggest to connect to a star-point GND the ground pin of the volume potentiometer or to connect it to the local ground, close to the opamp?

I think that connecting it to the star-point you may introduce some output signal into the pot....

But, if you connect it to the local ground you can get hum/Rf noise...

NB: the pot is located between two opamp; it is not directly connected to the input socket...
__________________
My projects (G.G. Italy)
  Reply With Quote
Old 19th May 2008, 12:55 PM   #2
diyAudio Member
 
Join Date: Mar 2007
Location: Canandaigua, NY USA
The pot should be connected to whatever point is the ground reference for the driving and receiving opamps. You don't want it connected to any point that might have a small contaminating signal on it, or should it modulate whatever point it's connected to (ulikely if a high value) IOW, the star point is the likely candidate.
__________________
I may be barking up the wrong tree, but at least I'm barking!
  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
Should I directly connect my signal ground to chassis ground? Bricolo Solid State 4 18th March 2014 09:42 PM
Ground field on pcb - how to connect ? GrzMiL Parts 2 31st December 2008 06:01 PM
connect to circuit with different ground level jegandren Power Supplies 3 23rd April 2008 02:42 AM
Chassis, ground, earth: connect? starbase218 Solid State 3 14th November 2007 08:56 AM
How to connect ground plane to via using Eagle? Ipanema Everything Else 5 23rd October 2006 08:16 AM


New To Site? Need Help?

All times are GMT. The time now is 10:36 AM.


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