Frequency Effects of Real-World Components
Due to the parasitics and materials used in the construction of real-world components, the measured capacitance or inductance value can differ from one instrument to another. When measuring capacitors with better dielectric properties, you observe much smaller reading differences between various instruments. This observation also applies to inductors with better magnetics.
The following table shows some examples of dielectrics with good and poor frequency characteristics:
| Dielectrics with Good Frequency Characteristics | Dielectrics with Poor Frequency Characteristics |
|---|---|
|
|
Due to the amount of magnetization current required, you can see an increase in sensitivity to frequency changes and other dependency factors in inductors with cores of larger dimensions, such as those used in transformers and power inductors.