KNOW FREQUENCY CHARACTERISTICS OF PASSIVE COMPONENTS
In this tutorial we are going to learn about WHAT IS THE FREQUENCY CHARACTERISTICS OF PASSIVE COMPONENTS ?Resistors are constructed 3 ways, wire wound, carbon composition, & film. It is understand how wire wound resistors can become inductive, because they are coils of Restive wire. Film resistors are also coils of thin metallic film. Therefore, they are also inductive at High Frequencies. The end caps of resistors are parallel, & there will be an associated capacitance. Generally, the resistance will create the parasitic capacitor so “leaky” that the capacitance does not matter. For very high resistances, the capacitance will appear in parallel with the resistance, lowering its impedance at HF’s.
High Frequency performance of capacitors is approximated by the figure