HoeDown (asymmetrical portamento?)
Scott Bernardi
sbernardi at home.net
Tue Sep 19 14:28:36 CEST 2000
As Doc Brown would say, "Please excuse the crudity of this model...."
What you want to do is create a parallel network of two separarate pots
in series with diodes facing the opposite direction. Put it inside the
feedback loop of an opamp, which will compensate for the diode drops.
+=============================+
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+====+
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+=====+ -- \ +===|<+===/\/\/\/\===+
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>---+ +======+====O
O==========+ + / |
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+===+>|===/\/\/\/\===+ |
/
| | ----+----
+==== + ----+----
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----+----
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--
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Scott Bernardi
sbernardi at home.net
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