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Stan’s Legacy

Inductance needed for a target frequency, two ways

The same calculation run twice, side by side. Change anything on either side and the difference is shown output by output. This page is a link: both sets of numbers are in the address bar.

Side A open alone
kHz

Where you want the circuit to ring.

nF

What the cell measures, or what the capacitance calculation gave you.

Side B open alone
kHz

Where you want the circuit to ring.

nF

What the cell measures, or what the capacitance calculation gave you.

Swap sides

What changed

The two sides are the same. Change something on either.

Output A B B against A
L Required inductance 211.1 mH 211.1 mH same
H Per choke, if two 105.5 mH 105.5 mH same
Z Characteristic impedance 13.26 kΩ 13.26 kΩ same

Side A, with its numbers

211.1mH=14π210kHz2·1.2nF
LaTeX
211.1\,\mathrm{mH} = \frac{1}{4\pi^{2} \cdot \left(10\,\mathrm{kHz}\right)^{2} \cdot 1.2\,\mathrm{nF}}

Side B, with its numbers

211.1mH=14π210kHz2·1.2nF
LaTeX
211.1\,\mathrm{mH} = \frac{1}{4\pi^{2} \cdot \left(10\,\mathrm{kHz}\right)^{2} \cdot 1.2\,\mathrm{nF}}