Ltspice ac source what is theta
In the real world, however, we must content with parasitics which are always present in inductive components. Ideally, inductors present only inductance, which is measured in henries (H). Resistance, Capacitance, and Temperature in Inductors Image used courtesy of the NDT Resource CenterĪs demonstrated in the visual above, we can see that the amount of flux present in an inductor depends not only on the applied current but also on the previous state of the inductor. This phenomenon is called hysteresis and is one of the main characteristics that determine the application of a magnetic material. We need to apply current in the opposite direction to restore the inductor to a non-magnetized state. This concept of saturation must be considered in models in order to have accurate simulations for applications such as power supplies, where magnetic components are crucial.Ī particularity of inductors is that even if we remove the magnetizing current circulating through an inductor, the magnetic flux density associated with the inductor’s core material does not decrease to zero on its own.
![ltspice ac source what is theta ltspice ac source what is theta](https://sigaris-electronics.eu/wp-content/uploads/2020/11/LTspiceAnyWaveformVoltageSource_6-1024x596.jpg)
This situation is reversed as soon as the current circulating through the inductor is reduced. When this happens, inductors are not able to continue storing energy. When the saturation current is reached, the inductor loses magnetic properties such as permeability. Inductors present an upper limit to the storage of magnetic energy.
![ltspice ac source what is theta ltspice ac source what is theta](https://media.cheggcdn.com/media/23a/23a9c80a-0c70-40a0-93ac-a0d118bbcd5d/phpvXYorY.png)
Inductor Saturation Current and Hysteresis Along the way, you’ll also learn some tricks about LTspice.
![ltspice ac source what is theta ltspice ac source what is theta](http://denethor.wlu.ca/ltspice/ltsnoise.png)
Here, we’ll discuss three different simulation models, starting with the lowest complexity (linear), discussing a middle ground (non-linear), and moving to the highest complexity (the CHAN model).