|
Tuned Circuit - Calculator: Frequency and Reactance from Inductance and Capacitance (and vice versa) |
Inductive Reactance Xℓ = 2πFL
Capacitive Reactance Xc = 1 / 2πFC
Resonant Frequency Fo = 1 / 2π√LC
Mouseover for formula derivation:
LC tuned circuit resonance is defined as the frequency where:
Capacitive and Inductive reactance's are both equal i.e. Xc = Xℓ
The calculator returns X and F given L and C
and also calculates L and C given X and F
or any 2 unknowns from any 2 given inputs!
For a parallel (or series) LC resonant circuit:-
enter any two known values and click to solve for the others.
For example, a 100pF capacitor with a 5 μH inductor will have
a resonant frequency of 7.118 MHz and each a reactance of 223.6 Ω
fields to zero before doing another calculation.
In previous times we would have been using a L C F nomogram (below) to acheive the same ends!
L-C-X-F calculator sourced (plagarized) from http://www.wa2ise.com/radios/ham.htm#LCRF
© 3Q 2018