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Mon May 26 11:51:56 EDT 2014

Inverting / non-inverting Schmitt trigger

Current saw circuit requires an extra inverter to drive the
transistor.  The ST in the circuit is inverting: if V < V_low the
output goes high, if V > V_high the output goes low.

It needs a non-inverting Schmitt trigger.

[1] http://en.wikipedia.org/wiki/Schmitt_trigger




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