# Capacitance Matrix Reduction — Lesson 4

This lesson teaches methods of capacitance matrix reduction with the example of three conductors. These methods are accompanied by simulation workshops.

This lesson consists of one lecture and two workshops.

The lecture covers some basic equations related to capacitance and then introduces a few basic matrix operations. It introduces two important capacitance matrices — Maxwell and SPICE capacitance matrices.

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### Workshop 4.1

This workshop covers the simulation aspects of MSbX capacitance matrix reduction. The outline for this workshop is as follows:
Open AEDT Q3D >> open MSbX archived file >> simulate it >> reduce matrix – join in series >> reduce matrix – join in parallel >> reduce matrix – return path.

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### Workshop 4.2

This workshop covers the simulation aspects of touchscreen capacitance matrix reduction. The outline for this workshop is as follows:
Open AEDT Q3D >> open touchscreen archived file >> perform float at infinity matrix reduction >> perform ground net matrix reduction.

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