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 Forum index » DIY Hardware and Software
LM13700 IC notes, Triangular/Square-Wave VCO
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blinky_Palermo



Joined: Feb 07, 2014
Posts: 9
Location: taiwan
PostPosted: Sun Feb 23, 2014 6:24 pm    Post subject: LM13700 IC notes, Triangular/Square-Wave VCO Reply with quote  Mark this post and the followings unread
Hey electro-music DIYers-

I recently breadboarded the canonical VCO from the IC notes on Page 16, here: http://resenv.media.mit.edu/classes/MAS836/ToPost/LM13700.pdf

It's not oscillating.

I am running +/-12v, rather than the +/-15v specified - but I don't see why that should be an issue.

Can anyone suggest some troubleshooting methods?

Thank you.
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ryktnk



Joined: Apr 24, 2008
Posts: 285
Location: london
Audio files: 1
PostPosted: Mon Feb 24, 2014 7:22 am    Post subject: Reply with quote  Mark this post and the followings unread
Hello

You mean the one in Fig15 ?

What are you using for CV ?

I reccomend using the expo converter from TH VCO1 or
similar as a good stardard control source for this VCO.

If in doubt double-double check everything.

-ryk
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