The Système Internationale (SI) of units
American Wire Gauge Resistance Ratio Calculator (also includes lists of standard resistance values)
Resistor Color Code Application of Phasors to Op Amp Problems Circuits Reference Card (includes corrected delta-wye transformation) Non-ideal Op Amps: Practice Problem 5.1 Cascaded Op Amp Circuits LM555 Timer Datasheet LM555 Presentation AC Power Java Applet AC Power Java Applet: Power as a function of phase angle.