FPGA Based Digital World - DC Circuit Analysis

FPGA based Digital World

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Analog circuit is the basis of electronics, and covers lots of area.

DC Circuit Analysis

DC(direct current) is a unidirectional flow of electric charge, so DC's direction remains constant with time.DC circuit is a circuit driven by DC sources, and is fundamental.

Two fundamental quantities in a circuit are voltage and current. To determine the values of these variables in a circuit, we need to understand some fundamental laws governing the electric circuit as well as some analysis techniques.

Three fundamental laws in the DC circuit analysis are : Ohm'law, Kirchhoff's current law(KCL) and Kirchhoff's voltage law(KVL). These laws are applicable to both linear circuit and nonlinear circuit. Nodal analysis and mesh analysis techniques are base on KCL and KVL respectively.

Linear circuit are so common that some techniques are developed for linear circuit analysis specifically, such as superposition, Thevenin's therorem and Norton's theorem, etc.

For a nonlinear circuit, it's usually transformed to linear circuit in specific ranges to be analyzed if possible, e.g., piecewise linearity.