@Stefan Schippers , seems the run has completed , to verify , but how can i plot the R1 w.r.t time ? also i tried to plot the voltage as in the function , seems throwing error (net1 is the voltage ) : plot dc1.v(net1) dc2.v(net1) dc3.v(net1) dc4.v(net1) dc5.v(net1) *+ dc6.v(net1) dc7.v(net1) dc8.v(net1) dc9.v(net1) dc10.v(net1) "no such function dc1.v(net)"