What Is a Linear Circuit?
A linear circuit is defined by its direct proportionality between input and output, adhering to a linear function.
In such circuits, any modification to the input signal directly influences the output proportionally. This linear dynamic is exemplified in circuits like amplifiers and filters that employ operational amplifiers. In amplification circuits, the input signal undergoes magnification where the amplification level is consistent with the input’s intensity. Filter circuits, on the other hand, linearly process signals to selectively transmit or eliminate certain frequency bands based on the input signal.
One of the hallmark traits of linear circuits is their simplicity and predictability. The linear relationship ensures a consistent output in response to varying inputs, simplifying both the analysis and design processes for such circuits.