## Wednesday, February 3, 2021

Electrical engineering-formulas

Let's start with quick definitions. Electronics involves the design and analysis of electronic circuits. Originally, this subject was referred to as radio engineering. The term "circuit" refers to a collection of components through which electrical current can flow or which use electromagnetic fields in their operation.

Basic circuit design and analysis rests primarily on two Kirchoff's laws, Ohm's law modified for AC circuits, and power relationships (see below). There are also a number of network theorems and methods (such as Thevenin, Norton, Superposition, Y-Delta transform) that are consequences of these three laws.

In order to simplify calculations in AC circuits, sinusoidal voltages and currents are usually represented as complex-valued functions called phasors. With phasors we need to solve algebraic equations instead of differential equations (see below). In general, practical circuit design and analysis requires an understanding of semiconductor devices, integrated circuits, magnetics, DSP, and feedback control.

Electrical engineering-formulas

Let's start with quick definitions. Electronics involves the design and analysis of electronic circuits. Originally, this subject was referred to as radio engineering. The term "circuit" refers to a collection of components through which electrical current can flow or which use electromagnetic fields in their operation.

Basic circuit design and analysis rests primarily on two Kirchoff's laws, Ohm's law modified for AC circuits, and power relationships (see below). There are also a number of network theorems and methods (such as Thevenin, Norton, Superposition, Y-Delta transform) that are consequences of these three laws.

In order to simplify calculations in AC circuits, sinusoidal voltages and currents are usually represented as complex-valued functions called phasors. With phasors we need to solve algebraic equations instead of differential equations (see below). In general, practical circuit design and analysis requires an understanding of semiconductor devices, integrated circuits, magnetics, DSP, and feedback control.