I have been trying to demonstrate a hysteric circuit.
The basic inverting opamp hooked up backwards version
(noninvering hysteric latch) -- a positive feedback
resistance of 10R from output to +in, a 1R resistance
from an AC source to +in, and -in grounded.
changing ratios of resistance allow the circuit to
incorrectly act as an inverting amplifier for almost a
cycle before it drops to a rail voltage.
changing the ratios to anything useful results in a
contact info included with simulation