Natural Response of an RC Circuit ECE 201 Circuit Theory I
Typical RC Circuit ECE 201 Circuit Theory I
Circuit Conditions Assume that the switch has been in position a for a very long time. ECE 201 Circuit Theory I
The Capacitor is Charged to the Source Voltage Vg The circuit now looks like ECE 201 Circuit Theory I
Write the Node Voltage Equation ECE 201 Circuit Theory I
Substituting back ECE 201 Circuit Theory I
Plot of the Natural Response ECE 201 Circuit Theory I
Current, Power, and Energy ECE 201 Circuit Theory I
Summary of Procedure Determine the initial voltage across the Capacitor. Determine the Time Constant, τ. Apply ECE 201 Circuit Theory I