Calculateur de Régulateur Zener
Calculez les composants d'un régulateur à diode Zener.
MHz
uΩ-cm
Profondeur de peau
0.0660 mm
Skin Depth vs Frequency
Formule
## Skin Effect **delta = sqrt(rho / (pi x f x mu))** At high frequencies, current concentrates near the conductor surface. The skin depth is the depth at which current density falls to 1/e (37%) of the surface value. Copper at 1 MHz: skin depth is about 0.066 mm.
Exemple Résolu
Copper at 1 MHz.
- 01rho = 1.72e-8 ohm-m
- 02mu = 4pi x 1e-7 H/m
- 03delta = sqrt(1.72e-8 / (pi x 1e6 x 4pi x 1e-7))
- 04delta = 0.066 mm
Questions Fréquentes
Why does skin effect matter?
At high frequencies, effective wire area decreases, increasing AC resistance. RF designers must account for this.
How to mitigate skin effect?
Use Litz wire (many thin insulated strands) or hollow conductors for RF applications.
Does skin effect occur at 60 Hz?
Yes, but skin depth in copper at 60 Hz is about 8.5 mm, only affecting very large conductors.
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