original and ingenious circuits ... (was: in How the heck doe s the MS-50 filter WORK?)

[List, Christopher]

Actually, one of my favorites was one you told me about! The ARP (I
beleive that's who it was) cv quantizer. I had always been thinking that
the way to quantize was to run the input through a ADC then to a DAC
with the low bits disconnected - this gets very expensive very quickly
if you want multiple channels. The ARP method, OTOH, uses a fixed
frequency stepped voltage oscillator (that could be made from - among
other things - a counter and a DAC) to drive a comparator + S&H. As soon
as the input voltage crosses the stepped voltage, you sample and hold
the stepped voltage at the output. You can have as many channels as you
want, just by adding more comparator + S&H elements connected to the
same stepped voltage! That's cool!

- CList

> -----Original Message-----
> From:	Haible Juergen [SMTP:Juergen.Haible at nbgm.siemens.de]
> Sent:	Wednesday, July 22, 1998 6:49 AM
> To:	Paul Perry; DIY
> Subject:	original and ingenious circuits ... (was: in How the
> heck does the MS-50 filter WORK?)
> 
> So, what little circuit details made the greatest impression on all
> of you ? What I have in mind is *not* "what new function / module"
> (would be another interesting thread, though), but what are the most
> astounding realizations of certain functions ? (to give one example,
> one of these things was when I discovered the ARP phaser cascade ...)
> 
> So, if you like this topic, write what were important circuit
> discoveries
> for you !
> 
> JH.