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 z1z2/(z1+z2) z1 z2 This is easy to do graphically in the y-plane y=1/z. To add y2 = 2+i3 to y1 = 1-i2, we start at y1 and move +2 units along the constant-susceptance contour, and +3 units along the constant-conductance contour: b (susceptance) y2 y1+y2 g (conductance) y1Ĭombining Impedances and Admittances When circuit elements are in parallel we add the admittances. When circuit elements are in parallel we add the admittances. To add y2 = 2+i3 to y1 = 1-i2,Ĭombining Impedances II. To add z2 = 2+i3 to z1 = 1-i2, we start at z1 and move +2 units along the constant-reactance contour, and +3 units along the constant-resistance contour: z2 x (reactance) z1+z2 r (resistance) z1Ĭombining Impedances II. z1  z1+z2 z2 This is easy to do graphically in the z-plane. When circuit elements are in series we add the impedances. z1  z1+z2 z2 To add z2 = 2+i3 to z1 = 1-i2Ĭombining Impedances I. Tutorial: A D Snider August 2008 Impedance = Resistance + j*Reactance Admittance = Conductance + j*Susceptance i = j = (-1)Ĭombining Impedances I.

Tutorial: A D Snider August 2008 Impedance = Resistance + j*Reactance Admittance = Conductance + j*Susceptance.