Minimum Versions: SmartSpice 4.6.5.R
The input deck shows how to use an E element (VCVS) with a logical condition to set the output level given a variation in input level between the voltage sense connections. In this example the threshold is set at 2.5v so when the input difference exceeds this value the output switches from 0 to 5v. This is a useful element to control startup reset and logic gate functionality. The log shows the data printed in the output window of SmartSpice. The plot of the output waveform shows the input and switched level at the output of the source.
Input Files
LogicalOperator.in — view contents
* Test logical operator in VCVS expression
V1 in 0 pwl(0 0V 10ns 5V)
R1 in 0 1k
E2 1 0 vol='(v(in)>=2.5)*5'
R2 1 0 1k
.tran 1n 10n
.option nomod
.print v(in) v(1)
.end