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 Forum index » DIY Hardware and Software » The layout factory
Who can help to make a stripboard layout? Buffered Multiple
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citric acid



Joined: Jun 11, 2011
Posts: 45
Location: germany

PostPosted: Tue Aug 30, 2011 11:00 am    Post subject: Who can help to make a stripboard layout? Buffered Multiple Reply with quote  Mark this post and the followings unread

hello,
Who can help to make a stripboard layout?
I ve tryed it now 3 times to do this on a hardwired breadboard but everytime i fail.
I can´t find the error.

can please do it someone on a stripboard ?

I think there are a lot of people who are happy when this is finished.

Thanks.


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vladosh



Joined: Aug 02, 2010
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PostPosted: Tue Aug 30, 2011 11:22 am    Post subject: Reply with quote  Mark this post and the followings unread

Here it is i think .. i missed those 1uF decoupling caps on the power strips ..


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vladosh



Joined: Aug 02, 2010
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PostPosted: Tue Aug 30, 2011 11:25 am    Post subject: Reply with quote  Mark this post and the followings unread

yes and mislabeled the 0.001 uF for 0.01 heh .. happens
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citric acid



Joined: Jun 11, 2011
Posts: 45
Location: germany

PostPosted: Wed Aug 31, 2011 7:52 am    Post subject: Reply with quote  Mark this post and the followings unread

vladosh wrote:
yes and mislabeled the 0.001 uF for 0.01 heh .. happens


thankls a lot men.

is there a chance that you show me where this cap´s have to be ?
Or can i let them out of this ?

ill try to build it after that i will give feedback , and if it´s ok for you i will share this to some friends.

thanks.

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bubzy



Joined: Oct 27, 2010
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PostPosted: Wed Aug 31, 2011 8:04 am    Post subject: Reply with quote  Mark this post and the followings unread

dont forget to cut the strip out in the middle of the IC Smile
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citric acid



Joined: Jun 11, 2011
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Location: germany

PostPosted: Wed Aug 31, 2011 11:14 am    Post subject: Reply with quote  Mark this post and the followings unread

bubzy wrote:
dont forget to cut the strip out in the middle of the IC Smile


do you mean this ? please see the edit


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citric acid



Joined: Jun 11, 2011
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PostPosted: Wed Aug 31, 2011 11:20 am    Post subject: Reply with quote  Mark this post and the followings unread

and how do i have to solder the 1uF decoupling caps ?
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vladosh



Joined: Aug 02, 2010
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PostPosted: Wed Aug 31, 2011 11:57 am    Post subject: Reply with quote  Mark this post and the followings unread

in the layout there are already 100n ceramic capacitors that serve as decoupling caps .. but if you wanna add those 1uF electrolits you can use this .. for orientation .. there is a nice paper on capacitors i know it's on the fonitronic site i think it's called 101 capacitors http://www.modular.fonik.de/files/capacitors_101.pdf may wanna check it out ..

greetings
vlad


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vladosh



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PostPosted: Wed Aug 31, 2011 12:40 pm    Post subject: Reply with quote  Mark this post and the followings unread

here's a proper layout with the strips cut off in the back ..
cheers

about using it commercially if you think .. that's for MFOS to decide as for the layout you can use it as much as you want


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citric acid



Joined: Jun 11, 2011
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PostPosted: Thu Sep 01, 2011 11:51 am    Post subject: Reply with quote  Mark this post and the followings unread

thanks a lot men, nice work....no no idon´t wan´t to use it in a comercial way. i just wan´t to post it in our german forum at the diy section, there where some guys who also wan´t to have it.

its www.sequencer.de


thanks

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citric acid



Joined: Jun 11, 2011
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PostPosted: Thu Sep 01, 2011 11:54 am    Post subject: Reply with quote  Mark this post and the followings unread

the input is not there Smile but no prob i know where it must be Smile
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vladosh



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PostPosted: Thu Sep 01, 2011 3:19 pm    Post subject: Reply with quote  Mark this post and the followings unread

I've tried a few times to browse thru that page it's huge and i give up fast .. as i gave up learning german Smile
all best
vlad
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citric acid



Joined: Jun 11, 2011
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PostPosted: Thu Sep 29, 2011 10:43 am    Post subject: Reply with quote  Mark this post and the followings unread

your desighn was super...it works fine thanks alot men... so i saved another 60€ for buffered multiple....

so if i can help sometime please let me know!!!

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Paradigm X



Joined: Feb 15, 2011
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PostPosted: Sat Oct 01, 2011 4:45 am    Post subject: Reply with quote  Mark this post and the followings unread

Seems a good place to ask; whats the difference between a passive and a buffered multiple Embarassed

Thanks

Smile
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vladosh



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PostPosted: Sat Oct 01, 2011 4:53 am    Post subject: Reply with quote  Mark this post and the followings unread

I read someone comment once that when more than one vco is driven thru passive multi - there is a drop in voltage ..meaning out of tune , i don't care too much about such details for now as i'm using no tempco vco's anyway ,so i use a passive multi .. with buffered there should be no problems like that .
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Paradigm X



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PostPosted: Sat Oct 01, 2011 5:27 am    Post subject: Reply with quote  Mark this post and the followings unread

Ah, ok cheers Smile
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citric acid



Joined: Jun 11, 2011
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PostPosted: Sat Oct 01, 2011 5:45 am    Post subject: Reply with quote  Mark this post and the followings unread

vladosh wrote:
I read someone comment once that when more than one vco is driven thru passive multi - there is a drop in voltage ..meaning out of tune , i don't care too much about such details for now as i'm using no tempco vco's anyway ,so i use a passive multi .. with buffered there should be no problems like that .


also i use it for clock pulses. when you have a lot of mudules to run with a clock its some times hard to run them all tight. with a passive they sometimes run out of sync with this active multiple never Smile

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vladosh



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PostPosted: Sat Oct 01, 2011 2:14 pm    Post subject: Reply with quote  Mark this post and the followings unread

Makes sense using it that way .. i should make one too .
cheers
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LektroiD



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PostPosted: Mon Nov 14, 2011 12:00 am    Post subject: Reply with quote  Mark this post and the followings unread

What's the 20K resistor for? It doesn't seem to connect anywhere

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citric acid



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PostPosted: Mon Nov 14, 2011 9:05 am    Post subject: Reply with quote  Mark this post and the followings unread

its the input !!!

look at the first drawing Wink

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emdot_ambient



Joined: Nov 22, 2009
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PostPosted: Mon Nov 21, 2011 2:09 pm    Post subject: Reply with quote  Mark this post and the followings unread

vladosh wrote:
...i don't care too much about such details for now as i'm using no tempco vco's anyway ,so i use a passive multi .. .

That's a common misconception. Tempcos on VCOs are there to stop pitch drift due to temperature changes only. They have nothing to do with the tracking of the VCO.

Feed a constant CV to a non-tempco VCO, and set it in the sunlight. It will drift out of tune as the VCO heats up, even though the ptich CV hasn't changed. Do the same with a tempco protected VCO and the drift will be smaller.

But even the best temperature stablized VCO in the world will not play in tune if the incoming pitch CV has been split so much through non-buffered multis that its voltage has been degraded.

...of course if you're not making melodic/harmonic music, passive multis are totally fine. They're also usually fine for non-pitch related duties such as VCA or VCF Frequency modulation.

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vladosh



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PostPosted: Tue Nov 22, 2011 3:47 am    Post subject: Reply with quote  Mark this post and the followings unread

Thanks Emdot for clearing that out ..
greeting s
Vlad
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rogerlatur



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PostPosted: Sat Dec 22, 2012 4:49 am    Post subject: Reply with quote  Mark this post and the followings unread

I saw this thread seeking for buffered multiple tips and also found another schematic from Ray Wilson online. See attachment.

Wondered which one I should choose. The one attached or the one seen in this thread. More detailled here:
http://www.musicfromouterspace.com/analogsynth_new/OLDIESBUTGOODIES/VOLTAGEMIXER/voltagedist1.html

Cause the one attached looks more recent, has attenuator pots and has less components, caps etc. ("more simple" in a way, though the other one is not complicated).

Mostly I was wondering if I would have to change any component value for 15V supply use instead of 12V.

Also if this could be used without problem with audio signals as well... Not necessarily mixing AC and DC signals, but using this module for both uses.


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elmegil



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PostPosted: Sat Dec 22, 2012 7:20 pm    Post subject: Reply with quote  Mark this post and the followings unread

I like the buffers from this project of Ray's:

http://www.musicfromouterspace.com/forums.html?MAINTAB=SYNTHDIY&PROJARG=CVANDGATEDIST/CVANDGATEDIST.html

I built a utility board that includes both the gate/trigger distribution and the CV distribution portions of that, one with and one without the voltage offsets.
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Nardu



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PostPosted: Sun Dec 23, 2012 8:47 am    Post subject: Reply with quote  Mark this post and the followings unread

Stripboards


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