Designation of total impedance Z for electrical AC circuit. Considered electrical circuit built with three resistors R, capacitor C and inductivity L. All parts in the circuit have the same value of impedance which is 1[Ω]. Parts in circuit are connected in mixed ways because there are serial connections and parallel connections. Total impedance is designated as impedance which is seen from power terminals. In example relation between impedance Z and admittance Y will be applied → Y=1/Z.
• Z=R+j·X → Z=R+j·(XL-XC)
• Y=G+j·B