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What is Negative Feedback Topologies in Amplifiers about?
Harold Black invented the feedback amplifier in 1928. There are two types of feedback: positive and negative. Negative feedback is used in amplifier design to: 1) reduce gain sensitivity, 2) reduce nonlinear distortions, 3) reduce noise, 4) control impedances, and 5) extend bandwidth. All of these desirable properties come at the cost of reduced gain. Negative feedback improves signal-to-noise ratio when a noisy amplifier stage is preceded by a noise-free stage. It also linearizes an amplifier
- Author
- pavithra
- Language
- EN