High and low impedance criteria
The following criteria can be used to roughly discriminate between low, middle,
and highimpedances by following figure. The medium Z range may be covered
with an extension ofeither the low Z or high Z range. These criteria differ
somewhat, depending on the frequencyand component type.
In the frequency region where the primary capacitance or inductance of a
component exhibitsalmost a flat frequency response, either a series or parallel
equivalent circuit can be applied as asuitable model to express the real
impedance characteristic. Practically, the simplest series and parallelmodels are
effective in most cases when representing characteristics of general
capacitor,inductor, and resistor components.
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