What is ideal inductance?
An ideal inductor is an electrical component that has no resistance and no capacitance and has only inductance. Since an ideal inductor has no resistance it will not radiate or dissipate any energy. Inductance depends on the shape of the coil, the number of turns, and the permeability of the core.
What determines inductance?
The inductance of a circuit depends on the geometry of the current path as well as the magnetic permeability of nearby materials. Winding the wire into a coil increases the number of times the magnetic flux lines link the circuit, increasing the field and thus the inductance. The more turns, the higher the inductance.
How to calculate the effective inductance of an inductor?
The following equation gives the effective inductance in such case – L = L 1 + L 2 + 2M = L 1 + L 2 + 2* k* (L 1 *L 2) 1/2 When inductors are connected close to each other such that current flows through them in opposite directions, the magnetic fields through the inductors oppose the magnetic fields of each other.
How are inductors chosen for a computer design?
There is a natural tradeoff between performance, size, and cost that must be considered when selecting an inductor for a design. As a result, manufacturers produce many series of similar inductors, allowing engineers to select a component well suited for their designs. Choice is all about options.
What should the tolerance of an inductor be?
For example, a 1.0-mH device with a 10% tolerance may have an actual value ranging from 1.1 to 0.9 mH. If you are designing an RF device, this change in inductance can cause an unwanted shift in frequency selection.
Which is the most common application for inductors?
The two most common applications for inductors are in the fields of RF and power electronics. Most inductor manufacturers recognize this division and have tailored their datasheets to provide an engineer with the electrical parameters required to design their part into an RF or power circuit.