electro-music.com   Dedicated to experimental electro-acoustic
and electronic music
 
    Front Page  |  Radio
 |  Media  |  Forum  |  Wiki  |  Links
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 
 Forum index » DIY Hardware and Software » YuSynth
Two quick queastions on components regards the VCO
Post new topic   Reply to topic Moderators: Scott Stites
Page 1 of 1 [7 Posts]
View unread posts
View new posts in the last week
Mark the topic unread :: View previous topic :: View next topic
Author Message
Shumba



Joined: Sep 20, 2016
Posts: 6
Location: Cape Town

PostPosted: Tue Sep 20, 2016 2:49 am    Post subject: Two quick queastions on components regards the VCO Reply with quote  Mark this post and the followings unread

Hi guys hope someone could give me two Yes or no answers

would this be a option to replace the 1K tempco?

http://za.rs-online.com/web/p/thermistors/8030719/


AND

would the Mica Caps rated at 500v be a good option too?

http://za.rs-online.com/web/p/products/0495789/



many Thanks

oh btw ordering parts from online isn't really an option since i live In south Africa and the shipping is HUGE!
Back to top
View user's profile Send private message
Cfish



Joined: Feb 24, 2016
Posts: 477
Location: Indiana

PostPosted: Wed Sep 21, 2016 6:58 pm    Post subject: Reply with quote  Mark this post and the followings unread

On the caps. Would depend on what you are using them in.

On the tempco question, it's about the same answer. I used similar thermistors in a couple of VCOs I built with pretty good success.
Back to top
View user's profile Send private message
gdavis



Joined: Feb 27, 2013
Posts: 359
Location: San Diego
Audio files: 1

PostPosted: Sat Sep 24, 2016 1:47 pm    Post subject: Reply with quote  Mark this post and the followings unread

Questions like these very rarely have simple yes or no answers. Electronic circuits are heavily involved with trade offs, not absolutes.
_________________
My synth build blog: http://gndsynth.blogspot.com/
Back to top
View user's profile Send private message
yusynth



Joined: Nov 24, 2005
Posts: 1314
Location: France

PostPosted: Sun Sep 25, 2016 5:54 am    Post subject: Re: Two quick queastions on components regards the VCO Reply with quote  Mark this post and the followings unread

Shumba wrote:
Hi guys hope someone could give me two Yes or no answers

would this be a option to replace the 1K tempco?

http://za.rs-online.com/web/p/thermistors/8030719/


NO not directly in a yusynth VCO the voltage divider where this Tempo is integrated must be modified placing a resistor in series with the KTY-81. This is necessary beacause the KTY has a 7000ppm temperature response instead of the 3300ppm expected correction.
You can learn more here : http://www.schmitzbits.de/expo_tutorial/index.html
Quote:

AND

would the Mica Caps rated at 500v be a good option too?

http://za.rs-online.com/web/p/products/0495789/

YES no problem with that

_________________
Yves
Back to top
View user's profile Send private message Visit poster's website
alanwilder81



Joined: Sep 03, 2016
Posts: 310
Location: italy

PostPosted: Sun Sep 25, 2016 5:04 pm    Post subject: Reply with quote  Mark this post and the followings unread

hello Yves,
i am looking for a method for transistor matching.can you please point me to a guide,tutorial or something?
Out of all the material i've read on the net, there seems to be lots of different methods, a rather confusing topic, so i'd love to know your opinion to shed some light on that.
cheers
Back to top
View user's profile Send private message
yusynth



Joined: Nov 24, 2005
Posts: 1314
Location: France

PostPosted: Sun Sep 25, 2016 11:27 pm    Post subject: Reply with quote  Mark this post and the followings unread

Check this http://electro-music.com/forum/viewtopic.php?highlight=matching&t=34177
_________________
Yves
Back to top
View user's profile Send private message Visit poster's website
Shumba



Joined: Sep 20, 2016
Posts: 6
Location: Cape Town

PostPosted: Mon Sep 26, 2016 1:31 am    Post subject: Reply with quote  Mark this post and the followings unread

Thank you very much Yves
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 [7 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 » YuSynth
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


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