Calcolatore Regolatore Zener
Progetta un circuito regolatore di tensione con diodo Zener e resistenza di limitazione.
MHz
uΩ-cm
Profondita di Penetrazione
0.0660 mm
Skin Depth vs Frequency
Formula
## 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.
Esempio Risolto
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
Domande Frequenti
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.
Impara