After the first resonant frequency though, it can become unpredictable. As you move up in frequency, inductors will keep circling the smith chart (so to speak).
One thing every engineer should realize is that components have many many resonant frequencies. We usually modelled inductors based on their first resonant frequency. Inductors are no exception.ĭepending on the frequency range, inductors can be modelled in various different ways. Parasitics are the innate imperfections in a component that results as a property of size, material, and frequency. The parasitics of the inductor is what caused me the most grief. In this range there a lot of factors to keep in mind.
I worked in primarily the high frequency RF range (30 MHz to 2000MHz). Low frequency uses of inductors and high frequency uses change the parameters that engineers look at when determining what type of inductor to use and with what stats. Energy Storage: Like its counterpart (the capacitor) it can store energy in the magnetic field.Motors: Inductors create magnetic fields when current passes through the coils and thus motors and generators can be formed.Transformers: Turning one voltage into another via paired inductors is very common in power applications.Traffic lights use this to detect traffic. Sensors: Inductors can be used to detect magnetic fields or detect magnetically permeable fields.Useful in power transform and filter applications Resonant Circuits: When combined with capacitors, inductors can resonate a very specific frequency to create a highly efficient matched circuit for the given frequency.Filters: RF/Microwave filters almost always have inductors.How are inductors used? Inductors are used in many many applications. If you have a desire for a transient calculation, a more formal approach is necessary. With this impedance across frequency, we can do a lot.
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