Key equations are followed by a brief explanation to increase student comprehension of important mathematical concepts. Modern op amp is presented as a versatile linear circuit element. Highly motivational use of op amps with SPICE for exploratory active circuit design. SPICE tutorial material placed in clearly marked sections that can be skipped or de-emphasized. No reliance on SPICE or other computer methods in the remaining sections. Balanced emphasis given to the complementary time, phasor, and domain approaches which are the core of modern linear circuit analysis. Table of Contents Resistive Circuits. Dependent Sources and Op Amps. Analysis Methods. Energy Storage Elements. First Order Circuits. Second Order Circuits. Sinusoidal Excitation and Phasors. AC Steady State Analysis. AC Steady State Power. Three Phase Circuits. The Laplace Transform. Circuit Analysis in the S Domain. Frequency Response. Transformers and Two-Port Networks. Fourier Series and Transform. Appendices.