Hello all, I am attempting to simulate an OPAMP oscillator in PSPICE with a dual gang variable resistor. While I can use Transient analysis to see the steady state frequency generated, how can I present a variation on the variable resistor and see the frequency change? Do I have to select a range and simulate a transient response for each point? Or is there a way to do this on the fly? Dennis -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu