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The parasitic capacitance between the turns of an inductor (e.g. Figure 1) or other wound component is often described as self-capacitance. However, in electromagnetics, the term self-capacitance more correctly refers to a different phenomenon: the capacitance of a conductive object without reference to another object.
Interconnect capacitance is calculated by giving the extraction tool the following information: the top view layout of the design in the form of input polygons on a set of layers; a mapping to a set of devices and pins (from a Layout Versus Schematic run), and a cross sectional understanding of these layers. This information is used to create a ...
The capacitance on the output is often neglected since it sees (+) and amplifier outputs are typically low impedance. However if the amplifier has a high impedance output, such as if a gain stage is also the output stage, then this RC can have a significant impact on the performance of the amplifier.
In electrical networks, a parasitic impedance is a circuit element (resistance, inductance or capacitance) which is not desirable in an electrical component for its intended purpose. For instance, a resistor is designed to possess resistance, but will also possess unwanted parasitic capacitance .
The limitation on bandwidth in this circuit stems from the coupling of parasitic transistor capacitance C gd between gate and drain and the series resistance of the source R A. (There are other parasitic capacitances, but they are neglected here as they have only a secondary effect on bandwidth.)
In an electrical or electronic circuit or power system part of the energy in play is dissipated by unwanted effects, including energy lost by unwanted heating of resistive components (electricity is also used for the intention of heating, which is not a loss), the effect of parasitic elements (resistance, capacitance, and inductance), skin effect, losses in the windings and cores of ...
The series inductance of a capacitor may be more significant than its desirable shunt capacitance. As a result, in the VHF or microwave regions, a capacitor may appear to be an inductor and an inductor may appear to be a capacitor. These phenomena are better known as parasitic inductance and parasitic capacitance.
Parasitic capacitance is the consequence of parallel turns of wire acting as capacitor plates, storing charge between adjacent wires. The parasitic capacitance can cause the coil to become self-resonant at one or several frequencies, which interferes with the intended tuned resonance and blocks and reflects current at the self-resonant frequency.