Showing result: 1 - 10 of 37
AC/DC Module
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Simulating a Generator in 2D
In this model, a rotor with permanent magnets and a nonlinear magnetic material rotates within a stator of the same magnetic material.
The generated voltage in windings around the stator is calculated as a function of time. COMSOL Multiphysics models the rotation with assemblies and identity pai...
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RF-Heated Hot Wall Furnace for Semiconductor Processing
Furnace reactors are used in the fabrication of semiconductor industry to grow layers on the wafers. These can also be used for epitaxial growth, which is a key technology for fabrication of electrical devices.
For the wide band gap silicon carbide substance growth takes place in graphite susce...
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Heating Circuit
Small-sized heating circuits are used in many applications. For example, in different manufacturing processes, heating circuits are used to heat reactive fluids.
This is a stationary model of a heating circuit, consisting of a thin electrically resistive layer deposited on a quartz glass plate....
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Nonlinear Magnetostrictive Transducer
Magnetostrictive transduction is used in sonars, acoustic devices, active vibration and position control and fuel injection systems.
The transducer has a steel housing enclosing a drive coil. A magnetostrictive material is placed in the core which works as an actuator when a magnetic field i...
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Bond Wires to a Chip
Bonding wires connect an integrated circuit to the pins of the package that holds it. These wires introduce relatively large inductances that can introduce crosstalk and distort the signals.
This model calculates the lumped parameters in the form of self inductance and the mutual inductance betwe...
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Planar Transformer on a PCB
A planar transformer is a transformer that is integrated onto a printed circuit board (PCB). They can either be manufactured as standalone devices, or integrated into the PCB of a module. The planar structure improves the cooling characteristics and gives the device a low profile. Therefore, the mai...
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Simulating a Generator in 3D
The generator analyzed in this model consists of a rotor with permanent magnets and a nonlinear magnetic material inside a stator of the same magnetic material.
The model calculates the static magnetic fields inside and around the generator.
The nonlinearity of the magnetic material is modele...
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A Tunable MEMS Capacitor
In an electrostatically tunable parallel plate capacitor, the distance between the two plates can be modified, as the applied voltage changes. The distance between the plates are tuned via a spring, to which one of the plates is attached. For a given voltage difference between the plates, the distan...
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Eddy Currents
An AC coil surrounding a metal cylinder induces eddy currents in the cylinder. The driving current in the coil can be specified in two ways: either as an external current density or as equivalent surface currents. In the first case, the skin effect can be studied by giving the coil a non-zero conduc...
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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...
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