[Ronja] Measuring capacitance of inductors with Twister

[Karel Kulhavy]

I needed to measure the self-capacitance of a small coil (2.8-20 uH). I Connected
U60-13 in Twister over a 8k2 resistor to the coil and the other side to ground. Then I
put oscilloscope trigger on U60-13 and oscilloscope input to the coil. I have read out
the ringing frequency (coil resonant frequency) and from the known inductance (I have an inductance meter) I have calculated the capacity which ranged from 12 to 14 pF :)

The scope probe says "8.0pF" but doesn't say if it's the input or output capacitance, i. e. if I have to divide by 10 and the real input capacitance is 0.8pF. Anyone has an idea?

KArel