[sdiy] Super S/H doc

Ian Fritz ijfritz at comcast.net
Mon Jul 13 21:11:57 CEST 2015

Pleasure! This project was originally conceived to test C0G vs plastic 
caps in S/H applications, since someone raised a question about that. 
(Previously I showed that C0G was as good as polystyrene in a 
high-performance VCO application.)  It looks like C0G is as good as 
polystyrene or polypropylene in this circuit as far as measureable 
droop, and significantly better that polypropylene wrt soakage.

As far as measuring leakage at these extremely low levels, it was 
important to wire the hi-Z node in the air and to carefully clean around 
this area with electronic-grade ethanol followed by ample drying time.


On 7/12/2015 8:44 PM, rsdio at audiobanshee.com wrote:
> Thanks, Ian !
> On Jul 12, 2015, at 6:35 PM, Ian Fritz <ijfritz at comcast.net> wrote:
>> Hi -- I have put up a short page about the Super S/H circuit I recently described here.
>> Ian
>> http://home.comcast.net/~ijfritz/super_sh_rand_web.pdf

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