ECT 2440 Study Guide - Final Guide: Rl Circuit, Rc Circuit, Inductor
Document Summary
Transient analysis of first order rc and rl circuits. The circuit shown on figure 1 with the switch open is characterized by a particular operating condition. Since the switch is open, no current flows in the circuit (i=0) and vr=0. The voltage across the capacitor, vc, is not known and must be defined. It could be that vc=0 or that the capacitor has been charged to a certain voltage. Let us assume the non-trivial initial equilibrium or initial steady state condition for the capacitor voltage shown on figure 2. and let"s close the switch at time t = , resulting in the circuit vc v= , will be dissipated as heat in the resistor. After closing the switch, current will begin to flow in the circuit. Energy will be dissipated in the resistor and eventually all energy initially stored in the capacitor,
