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Hi Mike

Here is a brief textual overview of what I shared in the video..

To measure an inductor or capacitor, use a shunt configuration (basically attach the component to your nanoVNA using “alligator leads” so as to be able to make S11 measurements... hahaha! Oh yeah, I said that! Sorry RF Engineers.) Measure the capacitive or inductive reactance at a frequency where the reactance of the component is equal to the characteristic impedance of the system you are using to measure the inductor or capacitor (most likely 50 ohms). This will correlate to a phase angle of 90 degrees as measured by the VNA (positive for an inductor, and negative for a capacitor).

This strategy places the impedance being measured within the nanoVNA’s abilities to measure accurately, and ensures that the measurement is performed well below the self resonant frequency of the component. You’ll get correct results so as to be able to label an unknown inductor or to verify the value of a capacitor.

Where the use of such ‘crude’ test fixture will break down is if you happen to be measuring components that require a relatively high frequency in order for the reactance to be 50 ohms... in that case, the high frequency unfriendly alligator leads will need to be replaced with a proper test fixture.

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