[sdiy] Thru-Zero, was as3340 PW/tuning issue

[Jason Proctor]

* -11 :-)

On Sat, Jan 4, 2020, 18:53 Tim <tim.parkhurst at gmail.com> wrote:

> A thru-zero VCO goes to 11...
>
>
> Tim (Servo)
>
> Imagination is more important than knowledge - Albert Einstein
>
> On Jan 4, 2020, at 6:27 PM, Adam Inglis <21pointy at tpg.com.au> wrote:
>
> 
>
> Thanks Colin
> Someone in that thread says they would love a "through-zero version”.
>
> Seems to be a lot of talk about TZ all over these types of forums - why?
> What’s the big deal? How are these different from the VCOs in my Roland,
> Korg and Sequential synths?
>
> Sure I could google but I know I’d get better education here ;-)
>
> Adam
>
>
>
> On 5 Jan 2020, at 6:26 am, ColinMuirDorward <colindorward at gmail.com>
> wrote:
>
> Just a note to say thanks to everyone contributing to this conversation.
> I've applied lots of what I learned here to my design, and I've got the
> PWM/pitch interaction down to what I think is an acceptable minimum.
> Anyways, it's nothing special, but I've started a build thread over at
> muffs <https://www.muffwiggler.com/forum/viewtopic.php?f=17&t=225670>,
> for anyone who needs yet another low cost 3340 vco. I need several, so
> thought I may as well go public in case anyone else does, too. I'll be
> using JLCPCB assembly for all the resistors and caps, and the rest will be
> through hole at home. I have lots of as3340s, so can include with the PCB
> if anyone needs. 3340 is running on +10/-5, so the circuit should be at
> home in 12v or 15v setups. I'm in Yukon, Canada.
> Thanks,
> Colin
>
> On Fri, Jan 3, 2020 at 12:39 PM David G Dixon <dixon at mail.ubc.ca> wrote:
>
>> The Intellijel Rubicon (and Rubicon-2) gives the option of generating
>> pulse waves from Triangle, Saw, or Double-Saw (twice the frequency).  It’s
>> not a whole synth, just a TZFM VCO.
>>
>>
>> ------------------------------
>>
>>
>>
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