The Negative Feedback in Electronics

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https://www.electronics-lab.com/article/the-negative-feedback-in-electronics/

Introduction According to Norbert Wiener, the American mathematician and the father of cybernetics, feedback is a method of controlling a system by reinserting the results of its past performance into it. In a feedback system, a signal that is proportional to the output is fed back to the input and combined with the input signal […]

Two-Port Parameters and Transformations

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https://www.electronics-lab.com/article/two-port-parameters-and-transformations/

Introduction A linear circuit is one whose output signal is linearly proportional to its input signal. As a simple case, it is possible to model the network at only two terminals as shown in Figure 1. Here, only V1 and I1 as the voltage and the current internal to the circuit, need to be described. […]