Showing result: 1 - 10 of 37
AC/DC Module
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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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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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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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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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Inductance of a Power Inductor
Power inductors are a central part of many low-frequency power applications. They are, for example, used in the switched power supply for the motherboard and all other components in a computer.
There are only crude analytical formulas or empirical formulas available for calculating impedances, so...
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Inductive Heating of Copper Cylinder
The induced currents in a copper cylinder produce heat, and when the temperature rises, the electrical conductivity of the copper changes. The heating caused by the induced currents is called inductive heating. Generally heating due to currents is also called resistive heating or ohmic heating.
I...
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Model of an RFID System
An RFID system consists of two main parts:
A tag or transponder with a printed circuit-board (PCB) antenna
A reader unit with a larger RF antennaThe reader antenna generates an electromagnetic field that energizes a chip (IC-circuit) inside the tag. The electromagnetic field is modulated by the ta...
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