New PSPICE computational method for single and double-mode ECAM

PSPICE has become one of the most well known circuit analysis programs. This work presents new methods of simulating the algebraic functions as well as the solving of non-linear differential equations. A new negative resistance oscillator model was used for the single and double mode LCR networks of ECAM. Analytic approximations are compared with the results obtained by numerical integration of the differential equations using a new PSPICE method.