New form of the error criterion for the automated dc design of electronic networks

The automated de design of electronic networks is formulated as a nonlinear optimization problem the solution of which is performed with nonlinear optimization algorithms. Special attention is given to an appropriate form of an error criterion which is able to meet practical design requirements. The proposed form of the error criterion leads to good convergence properties, especially in the case that certain requirements are strongly violated. The nonlinear dc analysis uses node variables and the well-known Newton-Raphson algorithm. As active elements models of diodes, Zener diodes, bipolar transistors, JFET's and MOSFET's are implemented in the developed design program. An example is given which shows the practicability of this program.