Datasheet

Specifications of the HT2 MOA3 S20 Rev. 1.1 1997-08-19
Ht2moa3.doc/HS Page 11 of 22
For a rough estimation ( ± 10 %) of the number of coil windings following formula can be used.
It is assumed that the winding is done in circular form.
N
L
2Uln(
u
d
)
1,85
=
N ... number of windings
L ... inductance [nH]
U ... average coil circumference [cm]
d ... copper diameter [mm]
u ... average coil circumference [mm]
For fine tuning a measurement of the inductance and an according adjustment of the number of
windings is necessary. This process always needs some iterations.