Another interesting variation is to use the ngspice AC DC re

Question

Another interesting variation is to use the ngspice AC DC resistor a resistor can have an AC=val that overrides normal resistor value for AC analysis This can be used to open the loop and connect the AC signal source

Tom · Answer

Oh the ac resistor sounds great +1 skin tone 2 I m going to give that a try Thank you both for these suggestions < U01819B63HP> < U028BEUFG2V> I ve tried the filter technique before actually but I don t like the fact that it s frequency dependant albeit very large The ac resistor sounds great I didn t realize that was an option

Tom · Answer

< U01819B63HP> what does the netlist entry look like for those resistors I can t get it to work ``` r2 vo net7 dc=0 1 ac=1g unknown parameter dc Simulation interrupted due to error ```

Stefan Schippers · Answer

< U01H2JMLFLL> are you using Xfce or ngspice for ngspice the syntax i this `R2 net1 net2 10G ac=0 1 m=1` the dc value does not need DC=

Tom · Answer

I m using ngspice That syntax is working for me now thanks < U01819B63HP>