* Temporary Spark for Convergence
* Spark load module - dual capacitance
* Electromagnetic -> Circuit terminology mapping:
*   Mutual capacitance (topload-spark coupling) -> C_mutual (circuit internal)
*   Shunt capacitance (spark to ground) -> C_shunt (circuit external)
* Topology: [R_spark || C_mutual] in series with C_shunt
* top -> (Rspark || Cmutual) -> spark_node -> Cshunt -> ground
Rspark top spark_node 50.65956822210045k
Cmutual top spark_node 1.6444639279093751p
Cshunt spark_node 0 7.359511220416813p