Hioki IM3570 - Appendix 8 Selecting the Equivalent Circuit Model

Appendix 8 Selecting the Equivalent Circuit Model
A12
When using the equivalent circuit function, it is important to select an appropriate equivalent circuit model.
The following table provides examples of measurement targets and equivalent circuit models:
Since the models for which parameters can be accurately acquired varies with observed values, perform a
simulation for estimated results and select the equivalent circuit model based on a comparison with observed
values.
When automatically selecting the equivalent circuit model, it will not be possible to select the optimal model
when the acquisition of frequency characteristics fails to yield local extreme values. Consequently, set the
sweep range so that resonance characteristics can be accurately acquired.
Appendix 8 Selecting the Equivalent Circuit Model
Measurement target
Corresponding equivalent
circuit model
Inductor
Inductor with high core loss and low ESR A
Comparatively high ESR B
Capacitor
Significant leak resistance effect C
Typical capacitor D
Resistor
Low resistance value, significant inductance effect B
High resistance value, significant stray capacitance effect C
Piezoelectric element - E