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 Forum index » DIY Hardware and Software » The layout factory
DC Mixer /Glide /Dual VCA (Stripboard)
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vladosh



Joined: Aug 02, 2010
Posts: 417
Location: macedonia
Audio files: 6

PostPosted: Thu Oct 18, 2012 4:45 am    Post subject: DC Mixer /Glide /Dual VCA (Stripboard) Reply with quote  Mark this post and the followings unread

Figured i need another mixer so this one is 8 ch ,or 2 x 4 ,the wiring i have in mind is bit different but anyhow one can make use of this as it is ,the glide is there to make fade in/out control of one of the vca's ..just for testing ,for that purpose you need a switch / momentary with positive / ground going into the lag processor and then into one of the vca's ,there was no room for two lags on this piece of reused stripboard ,i haven't built it yet but will start soldering anytime really ,,here are the links for the schematics used in this layout

the vca modules : http://yusynth.net/Projects/Wildcat/vca-modules.html
the lag : http://www5b.biglobe.ne.jp/~houshu/synth/Glide0301.GIF
the dc mixer : http://www.sdiy.org/ensign/7.jpg

(uploaded new version) x3
thanks Phobos ,found it Smile


Mixer - VCA - Glide.JPG
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Mixer - VCA - Glide.JPG



Last edited by vladosh on Thu Oct 18, 2012 7:27 am; edited 2 times in total
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PHOBoS



Joined: Jan 14, 2010
Posts: 1707
Location: Moon Base
Audio files: 346

PostPosted: Thu Oct 18, 2012 7:09 am    Post subject: Reply with quote  Mark this post and the followings unread

I didn't check if the layout is correct compared to the schematics. but you do have a bad short in the current layout Wink
(or at least that's what it looks like to me)

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PHOBoS



Joined: Jan 14, 2010
Posts: 1707
Location: Moon Base
Audio files: 346

PostPosted: Thu Oct 18, 2012 7:34 am    Post subject: Re: DC Mixer /Glide /Dual VCA (Stripboard) Reply with quote  Mark this post and the followings unread

vladosh wrote:
(uploaded new version) x3
thanks Phobos ,found it Smile

yeah, that looks right Smile

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ungleichklang



Joined: Dec 03, 2011
Posts: 82
Location: East-Belgium

PostPosted: Thu Nov 01, 2012 12:59 am    Post subject: Reply with quote  Mark this post and the followings unread

nice layout => I think I have to move from PCB to stripboarding Smile
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vladosh



Joined: Aug 02, 2010
Posts: 417
Location: macedonia
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PostPosted: Thu Nov 01, 2012 6:02 am    Post subject: Reply with quote  Mark this post and the followings unread

thanks Sasha Smile
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synthesist



Joined: Feb 17, 2011
Posts: 79
Location: austria
Audio files: 2

PostPosted: Tue Mar 19, 2013 3:19 pm    Post subject: Reply with quote  Mark this post and the followings unread

can someone tell me if the VCA is usefull to switch control voltages?

Cause I am searching for a simple VCA design that could switch LFOs but also some audio oscillators for sick frequency modulation.

Xonrad
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