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 Forum index » DIY Hardware and Software
thru zero VCO
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gabbagabi



Joined: Nov 29, 2008
Posts: 651
Location: Berlin by n8
Audio files: 23

PostPosted: Sun Mar 18, 2018 7:52 am    Post subject: Reply with quote  Mark this post and the followings unread

the collector and the emitter of the reset transistor have to be swopped
in the schemo from post Mar 05, 2018
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piedwagtail



Joined: Apr 15, 2006
Posts: 297
Location: shoreditch
Audio files: 3

PostPosted: Thu Apr 05, 2018 6:03 am    Post subject: Reply with quote  Mark this post and the followings unread

time flies like two years almost Shocked

I did breadboard the original design last year but couldn't see a use for it.
Slow_Riot's inclination for LFO use didn't seem that special.

Recent threads elsewhere, have got me to thinking about a One Operator FM module. Initially I thought of a LM13700 for an out VCA and a pitch in VCA. On further consideration perhaps LDR control is more in keeping with the simplicity.

The module could then hopefully be combined in cascade/mix with other OOFMMs (!) etc to generate FM percussion and drones with suitable EGs.

R
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gabbagabi



Joined: Nov 29, 2008
Posts: 651
Location: Berlin by n8
Audio files: 23

PostPosted: Thu Apr 05, 2018 9:57 am    Post subject: Reply with quote  Mark this post and the followings unread

if i remember right
i had a lot of fun with this simple patch
as i had two of the triangle-core on the breadboard


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gabbagabi



Joined: Nov 29, 2008
Posts: 651
Location: Berlin by n8
Audio files: 23

PostPosted: Sun Nov 22, 2020 1:06 pm    Post subject: Reply with quote  Mark this post and the followings unread

Hi guys,

i had this in the simulator today.
I will call the circutit "IVAR".
May someone find it usefull or can get an inspiration out of it.
For some month i will not have access to any hardware to test it.

cu


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