Capacitance And Inductance Measurements - Kenwood DM-81 Manual

KENWOOD DM-81

Capacitance and Inductance Measurements

The value of an unknown inductor can be obtained in combination with a known
capacitor by their resonant frequency, as illustrated in Figure 10. Likewise the
value of an unknown capacitor can be calculated. The inductance (L), capacitance
(C), and resonant frequency (f) are related as:
f = 1 / (2π √(LC))
This formula can be rewritten as
L = 25,400 / (f² C)
C = 25,400 / (f² L)
Where
14
L = inductance in µH
C = capacitance in pF
f = frequency in MHz