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 Forum index » DIY Hardware and Software
ElectroNotes 129 TZVCO PCB Layout
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v-un-v
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PostPosted: Sat May 15, 2010 3:35 am    Post subject: Reply with quote  Mark this post and the followings unread

I should add, it would be great if Oakley sound also sold Ian's kits, here in the UK. But that's between Mr Fritz and Mr Oakley Very Happy
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ACHTUNG!
ALLES TURISTEN UND NONTEKNISCHEN LOOKENPEEPERS!
DAS KOMPUTERMASCHINE IST NICHT FÜR DER GEFINGERPOKEN UND MITTENGRABEN! ODERWISE IST EASY TO SCHNAPPEN DER SPRINGENWERK, BLOWENFUSEN UND POPPENCORKEN MIT SPITZENSPARKSEN.
IST NICHT FÜR GEWERKEN BEI DUMMKOPFEN. DER RUBBERNECKEN SIGHTSEEREN KEEPEN DAS COTTONPICKEN HÄNDER IN DAS POCKETS MUSS.
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andrewF



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PostPosted: Sat May 15, 2010 5:49 am    Post subject: Reply with quote  Mark this post and the followings unread

v-un-v wrote:


Some people had a problem with Elby, as they also had with Doepfer, but I don't know if that has been cleared up by now?


this thread
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Rykhaard



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PostPosted: Sat May 15, 2010 6:19 am    Post subject: Reply with quote  Mark this post and the followings unread

andrewF wrote:
v-un-v wrote:


Some people had a problem with Elby, as they also had with Doepfer, but I don't know if that has been cleared up by now?


this thread


Wow. TY for posting the link to that thread. That were quite the drag (bummer /etc.) to read, especially for Thomas. Sad
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Luka



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PostPosted: Sat May 15, 2010 8:54 pm    Post subject: Reply with quote  Mark this post and the followings unread

ah ok
fair enough

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2thick4uni



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PostPosted: Sun May 16, 2010 2:07 am    Post subject: Reply with quote  Mark this post and the followings unread

Thanks for the info, a sad tale indeed.
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2thick4uni



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PostPosted: Sun May 16, 2010 2:09 am    Post subject: Reply with quote  Mark this post and the followings unread

v-un-v wrote:
I should add, it would be great if Oakley sound also sold Ian's kits, here in the UK. But that's between Mr Fritz and Mr Oakley Very Happy


+1 to that.
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Sebo



Joined: Apr 27, 2007
Posts: 534
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PostPosted: Sat Sep 08, 2012 4:07 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hi:
I recently finished building the TZ VCO. Thank you Forbin for the PCB layout!!!

I did a really nice MOD to it. I posted the details at this post:
http://electro-music.com/forum/post-369187.html#369187

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ryktnk



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PostPosted: Tue Mar 05, 2013 3:04 am    Post subject: E129 Through Zero VCO HELP ! Reply with quote  Mark this post and the followings unread

Hello

I hope somebody can help.

I have built this wonderful VCO 3 times [2 x breadboard, 1 x PCB]

But I always get some problems with instability when I
use a modulation freq obout 1khz and above, with a lower carrier VCO freq.

Seems to get really unstable and produces some
unpleasant and unpredictable glitches.

With modulation freq below 1khz it is great.

Anybody have any ideas what could be causng the problem ?

Cheers
-ryk
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Sebo



Joined: Apr 27, 2007
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Location: Argentina

PostPosted: Tue Mar 05, 2013 7:05 am    Post subject: Reply with quote  Mark this post and the followings unread

Hi, mine works well, I didn't experiment what you say, but in mine, when the modulation freq is higher than the carrier freq, the modulation index decreases, I'm no sure if that correct.
Also I feel that the modulation index in general isn't as high as I was expecting (compared to other VCOs I have), but I think that's could be a low output of the VCA, I have to check.

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ryktnk



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PostPosted: Tue Mar 05, 2013 2:41 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hello

Thanks Sebo.

I have the modulation cranked up high.
It is ok at very low modulation, but of course
that is before "through zero" so not so much fun !

-ryk
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