Add to:
Section "Single Voltage T50-2 37T #24 with 330pF C0G Q Measurement" is a
VNWA BW Q measurement of same T50-2 inductor and 330pF capacitor with
Q=236. Whereas, Oscilloscope Vrms method results with Q=203.
Having greater confidence in Bandwidth method, I question viability of
Oscilloscope RMS voltage measurement method for high Q devices.
Possibly a HF RMS voltmeter will have increased accuracy.
John KN5L
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On 8/29/22 8:09 AM, John KN5L wrote:
Measurements using a single voltage measurement with an air coil may not
be easily reproducible. Air coil selected at the time for computing Q
using an online coil calculator.
is updated with easier to replicate Toroidal inductor, shown in section
"Single Voltage T50-2 37T #24 with 330pF C0G Q Measurement"
Signal generator is set to near maximum output to increase DUT Vout
measurement. Using Oscilloscope Averaging and RMS measure for greater
accuracy.
