[sdiy] Squaring volts

[Ian Fritz]

At 08:23 AM 11/22/05, Harry Bissell Jr wrote:
>Sorry for the strange post... I lost the original
>
>Here is the Design Idea I remembered with the "negative resistor"
>I don't know if it makes any sense in this context... I'm just skimming the
>surface of this thread.
>
>http://www.edn.com/archives/1994/072194/15di1.htm#fig1

Right, Harry, this looks like the standard, textbook, negative-resistance 
circuit.  I used a clamped version of this to make SNICster waveshaper, 
which basically folds a Saw into a Tri.  Another way to do the same thing 
is to subtract a linear response from the response of a high gain clipping 
amplifier.  Not  quite sure how Michiel is using the negative resistance, 
but it could probaly be worked out with a circuit similar to the EDN one.

   Ian