Including an Explicit Model of an Inductor in the Simulation of an Amplifier Circuit
When an engineer is designing a new electronic component, like a capacitor or an inductor, the SPICE parameters for that device are not known. They are either extracted from finite element tools, such as COMSOL Multiphysics, or from measurements on a prototype. To speed up the design process it can be convenient to include the finite element model in the SPICE circuit simulation, calculating the device behavior in an actual circuit.This model takes a simple amplifier circuit and exchanges one of its components with a finite element model of an inductor with a magnetic core. COMSOL Multiphysics calculates the transient behavior of the entire system. A script adds the circuit elements as ODE equations to the inductor model along with the necessary model parameters for the SPICE devices in the circuit.
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Plot to the left shows the magnetic flux density, the figure window shows the input signal, output signal, and the inductors voltage as a function of time. |
Engineering Fields
- AC & Quasi-Static Applications
Application Areas
- Electro- & Magnetostatics