[sdiy] Multiplier vs VCA?

[synthplayer88 at spymac.com]

On Wed Aug 18 12:57 , Scott Stites <scottnoanh at peoplepc.com> sent:


>
>Going through my own archives, I pulled a little bit of info out from the last
time this subject came up.
>
>Paul Perry furnished this information:
>
>A one quadrant multiplier operates only on signals from say 0v to 10v
>for both x and y.
>
>A two quadrant multiplier works on signals of for example -10 to +10 for X, 
>and 0 to +10 for Y.
>
>And a 4 quadrant multiplier accepts inputs from for example -10 to +10 
>both for x and for y.
>
>Think of a graph with the x and y axis making four "quadrants",
>the one quadrant multiplier works in the quadrant where all the voltages 
>are positive, and so on.


Hey, that's a really good explaination!! :)

Thanks so much my man!!
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