[sdiy] Mind blown -- TL074 saturated outputs different

Adam Inglis 21pointy at tpg.com.au
Mon Dec 17 05:57:47 CET 2018

Hi Rene
> On 11 Dec 2018, at 6:04 AM, René Schmitz <synth at schmitzbits.de> wrote:
> Hi David,
> On 10.12.2018 08:36, David G Dixon wrote:
>> Such a "zener bridge" is at the heart of every Dixie, Rubicon, and Atlantis VCO.
> Have you posted these schematics somewhere?

Just found this VCO schematic online that features this:

page 16
dual integrator quadrature VCO (sinusoidal, not sure how useful for synths) using 3080 OTA

https://www.americanradiohistory.com/Archive-Electronics-Today/Canada/70s/ETI-CA-1978-12.pdf <https://www.americanradiohistory.com/Archive-Electronics-Today/Canada/70s/ETI-CA-1978-12.pdf>

Article is by Tim Orr, who I think used to work for EMS?

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