electro-music.com   Dedicated to experimental electro-acoustic
and electronic music
 
    Front Page  |  Articles  |  Radio
 |  Media  |  Forum  |  Wiki  |  Links  |  Store
Forum with support of Syndicator RSS
 FAQFAQ   CalendarCalendar   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   LinksLinks
 RegisterRegister   ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in  Chat RoomChat Room 
Live streaming at radio.electro-music.com

  host / artist show at your time
  Twyndyllyngs live. Chez Mosc
Please visit the chat
 Forum index » DIY Hardware and Software » Ken Stone designs - CGS
VCO SPAN needs re-setting
Post new topic   Reply to topic Moderators: Scott Stites
Page 1 of 1 [3 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Author Message
whomper



Joined: Dec 15, 2007
Posts: 200
Location: Israel
Audio files: 2

PostPosted: Fri May 08, 2009 7:32 am    Post subject: VCO SPAN needs re-setting Reply with quote  Mark this post and the followings unread

I have built several CGS VCOs and I am in constant need to re-set the SPAN trimmer every once in a while.

I am using the SSM chip for greater stability, but the tuning intervals are not always kept, thus am in need to take out the module and play with the SPAN trimmer.

Is it a common issue? Should I take out the SPAN to a multi-turn pot on the front panel?

_________________
Erez Yaary

Home Page: http://www.yaary.com
Buy my CDs at http://www.mellowjet.de
Back to top
View user's profile Send private message
zthee



Joined: Feb 20, 2008
Posts: 414
Location: Stockholm

PostPosted: Mon May 11, 2009 1:56 am    Post subject: Reply with quote  Mark this post and the followings unread

After adjusting the trimmer put som nail polish on it. To make it stay in the same place. The trimmers have a tendency to shift out of place if you move your synth around or have vibrations in the case..

Just a thought!

Smile

_________________
http://www.thehumancomparator.net/
Back to top
View user's profile Send private message
whomper



Joined: Dec 15, 2007
Posts: 200
Location: Israel
Audio files: 2

PostPosted: Mon May 11, 2009 7:46 am    Post subject: Reply with quote  Mark this post and the followings unread

Thanks for the tip.

THe issue here is that it is not just a small tune here and there, I am forced to do a good amount of turning the trimmer until I reach satisfactory results, which might indicate that after one or more restarts, something is not getting back to its original state.

Maybe there is a central issue there?

_________________
Erez Yaary

Home Page: http://www.yaary.com
Buy my CDs at http://www.mellowjet.de
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic Moderators: Scott Stites
Page 1 of 1 [3 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
 Forum index » DIY Hardware and Software » Ken Stone designs - CGS
Jump to:  

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
e-m mkii

Please support our site. If you click through and buy from
our affiliate partners, we earn a small commission.


Forum with support of Syndicator RSS
Powered by phpBB © 2001, 2005 phpBB Group
Copyright © 2003 through 2009 by electro-music.com - Conditions Of Use