[sdiy] Source for 3080's

[Carsten Toensmann]

David,

what's about the additional DIODE BIAS input and the darlington buffer of 
the LM13700? If I replace a CA3080 with it, can I ignore them?

-Carsten

----- Original Message ----- 
From: "David G. Dixon" <dixon at interchange.ubc.ca>
To: "'Sam Ecoff'" <secoff at execpc.com>; "'sdiy DIY'" 
<synth-diy at dropmix.xs4all.nl>
Sent: Tuesday, March 09, 2010 8:11 AM
Subject: Re: [sdiy] Source for 3080's


>> I'm looking for a source for some CA3080s to build some Thomas Henry
>> circuits...
>
> If you don't mind changing the layouts a bit, you could just use (the much
> easier to find) LM13700 instead.  It's a superior OTA, it's cheap, and,
> conveniently, it comes in pairs.  I've built the Thomas Henry VCO-1 with 
> it,
> and it works perfectly.  I used the extra OTA for a sine shaper.
>
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