[sdiy] digital control of CV

jbv jbv.silences at club-internet.fr
Mon Sep 3 18:02:24 CEST 2007



Tom,

> I was only really wanting to suggest that since the 1980's the
> situation has reversed: back then DACs were expensive and S&H muxes
> freely available and cheap - now multiple-channel DACs are cheap, and
> S&H muxes are difficult to find and expensive if you do.
>

Mmmh... please correct me if I'm wrong, but there's still the
possibility to
have a simple counter (eventually handled by a uC), an analog mux chip
(4051, 4053...) and caps for voltages S&H...
Of course, it's less efficient in terms of PCB room, but cost remains
low...

JB




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