This is a second edition of the basic book, "Analysis of active and passive networks combinations." With this new edition, we have incorporated a number of minor revisions and added minor amendments to the previous text especially in the discussion of negative resistance. Analysis of networks and circuits has been using Kirchhoff, s voltage and current equations since their inception. These equations are used to analyze circuit behavior and obtain information on voltages and currents at several nodes or meshes within the circuit. When the network possesses more than four nodes, the...