Interactive Illustrations

How should reference directions be selected? What is the relationship between phasors and sine waves? What does the response of a first order circuit look like? These questions, and others, are addressed using a series of interactive illustrations. In each case, the interactivity of the demonstrations is used to focus attention on  key issues.


Voltage and Current Reference Directions


Thevenin and Norton Equivalent Circuits




Response of First Order Circuits





Phasors and Sinusoids


Matching Phasors to Sinusoids


Adding Phasors.