Before revision: 535–539 Element Z Dual Z' Resistor R Conductor G = R Conductor G Resistor R = G Inductor L Capacitor C = L Capacitor C Inductor L = C Series impedances Z = Z1 + Z2 Parallel admittances Y = Z1 + Z2 Parallel impedances 1/Z = 1/Z1 + 1/Z2 Series admittances 1/Y = 1/Z1 + 1/Z2 Voltage generator V Current generator I = V Current generator I Voltage generator V = I Graphical method There is a graphical method of obtaining the dual of a network which is often easier to use than the mathematical expression for the impedance.
After revision: (Parallel sum)535–539 Element Z Dual Z' Resistor R Conductor G = R Conductor G Resistor R = G Inductor L Capacitor C = L Capacitor C Inductor L = C Series impedances Z = Z1 + Z2 Parallel admittances Y = Z1 + Z2 Parallel impedances 1/Z = 1/Z1 + 1/Z2 Series admittances 1/Y = 1/Z1 + 1/Z2 Voltage generator V Current generator I = V Current generator I Voltage generator V = I Graphical method There is a graphical method of obtaining the dual of a network which is often easier to use than the mathematical expression for the impedance.