LINEAR CIRCUIT Meaning and
Definition
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A linear circuit is a type of electrical circuit that exhibits proportionality between the input and output variables. In other words, it is a circuit that follows the principles of linearity. Linearity refers to the property of a system or circuit where the response to a given input is directly proportional to the input itself.
In a linear circuit, the relationship between the input voltage or current and the output voltage or current can be described by a linear equation. This means that if the input is doubled, the output will also be doubled. The behavior of a linear circuit is predictable and can be analyzed using mathematical techniques.
Linear circuits are characterized by the absence of significant nonlinearities, such as diode or transistor nonlinearities. They typically consist of passive components like resistors, capacitors, and inductors, as well as active components such as operational amplifiers.
The analysis of linear circuits involves techniques such as Ohm's Law, Kirchhoff's Laws, and the superposition theorem. These methods allow engineers to determine the behavior of the circuit, calculate voltages and currents at various points, and design circuits for specific purposes.
Linear circuits are widely used in various applications, including audio amplifiers, signal processing systems, power supply circuits, and telecommunications systems. Their linearity and predictable behavior make them essential building blocks in the field of electrical engineering.
Etymology of LINEAR CIRCUIT
The word "linear circuit" is formed by combining two terms: "linear" and "circuit".
The term "linear" comes from the Latin word "linearis", which means "of or pertaining to a line". In mathematics and physics, "linear" refers to a relationship that is proportional or can be represented by a straight line, such as in linear equations or linear functions.
The word "circuit" has its roots in the Latin word "circus", which means "circle" or "ring". In the context of electronics and electrical engineering, a circuit refers to a closed path through which electric currents can flow. The term "circuit" emphasizes the circular path that electric currents take in a closed loop.
When combined, the term "linear circuit" typically refers to an electronic circuit in which the relationship between voltage and current can be described by linear equations or represented by straight lines.
