[sdiy] super-duper S/H

Roman Sowa modular at go2.pl
Thu May 21 17:19:29 CEST 2015


Less than 3 cents over an hour? That's more than impressive!
With holding capacitor so small, how big is the charge injection effect? 
I mean what is the jumping error in output voltage between Sample and 
Hold stage of the circuit?

Roman

W dniu 2015-05-21 o 16:40, Ian Fritz pisze:
> Hi Brian --
>
> Ooooops -- we're both on the wrong page!  It's in Ch. 7, p. 393 in the
> second edition.  The part down at the bottom.  Mine is different in the
> details, but still uses the idea of having all switch terminals at 0V.
> The Ch. 4 circuit is the same principle, but for cap discharge, as in a
> VCO (viz. Rene).
>
> I wish I could find MOSFETs without the stupid protection diodes
> anymore.  Anybody?  I found the nice ALD parts, but they're 10 V max.
>
> I posted a slightly less brief description of this project over at Muff's:
> https://www.muffwiggler.com/forum/viewtopic.php?t=138809
>
> Ian
>
>  >>>>>>>>>>>>>
> I was just reading my copy of H & H over a hamburger, but it's mentioned
> in chapter 4 of the 2nd edition.
>
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