Knowledge

Impedance is the complex resistance of electrical components such as coils, capacitors or resistors. It is therefore an important variable in complex alternating current technology and is characterised by the formula symbol 𝑍. The complex impedance 𝑍 can optionally be expressed in Cartesian coordinates as a real and imaginary part $$Z = R + jX$$, which represent active and reactive components, or in Eulerian representation $$Z = |Z| \cdot e^{j \varphi}$$ by magnitude and phase.