[sdiy] Moog Memorymoog clone almost completed

[chris]

On Thu, 15 Oct 2020 19:25:03 -0500 Oren Leavitt <obl64 at ix.netcom.com> wrote:

> Wow! That is a beauty.
> 
> What are you using for analog switches? I know the original Memorymoogs 
> had frequent failures of 405x and 4016 CMOS switches.


I have seen lots of 4051 problems on other polys as well.

For years I've been suspecting that on power down the S&H caps hold
their voltage longer than the PSU. I think CMOS chips don't like signal
voltage without a supply voltage.

Chris