🔌 التقنية والإلكترونيات

حاسبة ممانعة الكابل

Enter the conductor diameters and dielectric constant for coax impedance.

Inner diameter of shield (mm)

Outer diameter of center conductor (mm)

Dielectric constant (Er)

Result will appear here

المعادلة

Z = (138 ÷ √Er) · log₁₀(D ÷ d)