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**Topic under **Impedance Measuring Devices

**Source:** www.kennethkuhn.com

**File size:** **83.85 KB**

**File type:** **pdf**

**Last download on:**
Thu Apr 12, 2018 04:58:37 AM

__Short Desciption__:

A Simple Circuit for Measuring Complex Impedance 1 byKenneth A. Kuhn November8,2008, rev. Nov. 13,2008 Introduction This article shows a method that can be used to measure complex ...

__Summary__:

This article shows a method that can be used to measure complex impedance from audio
frequencies to very high frequencies (VHF –if tight construction practices are followed
and with appropriate diode detectors). All that is required is a known resistance and three
AC voltage measurements –for audio frequencies this could be a standard hand-held
DVM. The only disadvantage of this method is that only the phase magnitude and not
the polarity can be measured. In many cases the phase polarity can be inferred from
other known information.

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