[sdiy] Interesting article on top octave generators.

[Tom Wiltshire]

> On 27 Dec 2024, at 20:17, Ingo Debus via Synth-diy <synth-diy at synth-diy.org> wrote:
> 
>> Am 27.12.2024 um 08:35 schrieb Donald Tillman <don at till.com <mailto:don at till.com>>:
>> 
>> If it was me, I would have directly emulated the chip with, say, 6 CD4040's and some diodes.
> 
> That’s what Elektor did in 1974:
> https://www.elektormagazine.de/magazine/elektor-197411/55706 <https://www.elektormagazine.de/magazine/elektor-197411/55706>
> 
> They used TTL chips, not CMOS. It was quite a huge project. I remember this so well because this was one of the first Elektor issues I bought myself.

I honestly don't see the point of this type of approach. Discrete dividers has all of the worst features of the TOG chips (locked frequencies, poor frequency tuning, loads of circuit) without the few minor benefits (small size, simplicity, and cheapness).

IF you'Re willing to throw that much circuitry at the problem, why would you *not* simply build a board with twelve top octave oscillators and then just use dividers from there? I don't get it.

I suppose the draw of only having a *single' trimmer to tune the entire thing must have seemed absolutely magical in the late 1970's, and that was enough!!

Tom
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://synth-diy.org/pipermail/synth-diy/attachments/20241227/a2667c82/attachment.htm>