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 Forum index » DIY Hardware and Software » Ken Stone designs - CGS
The CGS VCO
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southcitypride



Joined: Apr 10, 2010
Posts: 15
Location: St. Louis

PostPosted: Mon Mar 25, 2013 9:56 pm    Post subject: Reply with quote  Mark this post and the followings unread

Has anyone built the full version in Frac? I'm contemplating doing it, but not sure if it'll fit very nicely.
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billy pilgrim



Joined: Feb 12, 2008
Posts: 36
Location: nyc

PostPosted: Tue Mar 26, 2013 7:26 pm    Post subject: Reply with quote  Mark this post and the followings unread

southcitypride wrote:
Has anyone built the full version in Frac? I'm contemplating doing it, but not sure if it'll fit very nicely.


I have, fits well in 3u wide. I can upload FPD file if you'd like ?
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fluxmonkey



Joined: Jun 24, 2005
Posts: 708
Location: cleve

PostPosted: Wed Mar 27, 2013 7:02 pm    Post subject: Reply with quote  Mark this post and the followings unread

i'd be interested as well...
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billy pilgrim



Joined: Feb 12, 2008
Posts: 36
Location: nyc

PostPosted: Wed Mar 27, 2013 7:31 pm    Post subject: Reply with quote  Mark this post and the followings unread

here you go...


CGSVCO-2.fpd
 Description:

Download
 Filename:  CGSVCO-2.fpd
 Filesize:  2.21 KB
 Downloaded:  714 Time(s)

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Solid Rate Studios



Joined: Jun 05, 2008
Posts: 8
Location: Spanaway

PostPosted: Tue Sep 24, 2013 8:48 pm    Post subject: Reply with quote  Mark this post and the followings unread

Time to slap some FRAC panels on these bad boys...

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Posted Image, might have been reduced in size. Click Image to view fullscreen.

Can't wait!
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Solid Rate Studios



Joined: Jun 05, 2008
Posts: 8
Location: Spanaway

PostPosted: Wed Dec 04, 2013 12:10 pm    Post subject: Complete... Reply with quote  Mark this post and the followings unread

Posted Image, might have been reduced in size. Click Image to view fullscreen.
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sonicwarrior



Joined: Dec 22, 2005
Posts: 266
Location: Cologne, Germany

PostPosted: Sat Nov 08, 2014 6:28 am    Post subject: Reply with quote  Mark this post and the followings unread

zthee wrote:
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Apparently a corrected version of that has been posted @Muffwiggler:

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romaindegode



Joined: Feb 28, 2019
Posts: 26
Location: France.

PostPosted: Wed Apr 17, 2019 4:02 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi guys
I need some precisions about tempco

The BOM shows two different ones :
- TEMPCO - PT146 1K 3500ppm
- TEMPCO - 42R2 0.1% 0.25W 15ppm Resistor

I already have a lot of Akaneohm 1% 3300ppm. Do you think it will be ok ?

I was wondering the same thing for the Thomas Henry XR vco and read that from him :

Quote:
Thomas_Henry wrote:
If you check the exponential relationship, you'll see that 3300 is a better fit. I only used 3500 because that's what I had. Either will work acceptably, though.


Do you think this is the same for this CGS VCO ?

Also, BOM mention 42R2 0,1% 15ppm tempco and the closest one i can find is from elby design : 40R2 50ppm. Moreover, i can't find this in the schematics.
I really don't have a deep understanding of tempcos but i might guess this is just a way to make that 1K 3500ppm to 3300ppm ? So i don't need it if i have already a 1K 3300ppm?
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