Introduction to Electric Circuit

Introduction:
Let us see about introduction of electric circuits,

An electric circuit is known as network which has a closed loop and produces a back way to the current. A network is a connection of two or more components, and may not essentially act as a circuit. It is a link of electrical components. These are resistor, capacitor and sources etc. Circuit reproduction software, like VHDL and HSPICE, allows designers to make circuits without the time and money.

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About electric circuits:


Let us see about introduction of an electric circuits,

In introduction , an active elements of electric circuits are called as an electronic circuit. These networks are usually non-linear circuit and need more complex design and analysis.
To set an electrical circuit, that may be analog or digital, electrical engineers must being able to estimate the voltages and currents within the circuit.
Linear circuits that are circuits which having the same input and output frequency.
In introduction of these networks, it having the following elements,

Voltage sources
Current Sources
Linear lumped elements
Linear distributed elements
Linear lumped elements:

It having following elements,

Resistors
Capacitors
Inductors
Linear distributed elements:

Transmission lines which is defined by algebraic and transform methods to find out DC response, AC response, and transient response.

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Laws of electric circuits:


Let us see about introduction about laws in electric circuits,

Kirchhoff's current law:
The addition of all currents incoming a node is equal to the sum of all currents outgoing the node.

Kirchhoff's voltage law:
The directed addition of the electrical potential differences about a loop has to be zero.

Ohm's law:
While stable temperature, the voltage crossways a resistor is equal to the multiplication of the resistance and the current flowing through it.

Norton's theorem:
The sources with resistors in a network are equal to a parallel connection of current source and resistor.

Thévenin's theorem:
The sources with resistors in a network are equal to a series connection of voltage source and resistor.