An electrical network is an interconnection of electrical components (batteries, resistors, inductors, capacitors, switches, insulators) or a model of such an interconnection, consisting of electrical elements (voltage sources, current sources, resistances, inductances, capacitances).

electrical network

An electrical circuit is a network consisting of a closed loop, giving a return path for the current. Linear electrical networks, a special type consisting only of sources (voltage or current), linear lumped elements (resistors, capacitors, inductors), and linear distributed elements (transmission lines), have the property that signals are linearly superimposable. They are thus more easily analyzed, using powerful frequency domain methods such as Laplace transforms, to determine DC response, AC response, and transient response.

High voltage transmission lines needed some insulators to support and insulate, such as porcelain pin type insulator and suspension insulator.

A resistive circuit is a circuit containing only resistors and ideal current and voltage sources. Analysis of resistive circuits is less complicated than analysis of circuits containing capacitors and inductors. If the sources are constant (DC) sources, the result is a DC circuit.

A network that contains active electronic components is known as an electronic circuit. Such networks are generally nonlinear and require more complex design and analysis tools.

But in some electrical network, AC circuit is very important, such as insulator manufacturers produce polymer pin insulators used for AC high voltage transmission and distribution lines.

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