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91. Feedback system (Part-B)

91. Feedback system (Part-B)

The chapter covers the configurations of feedback systems with a focus on voltage and current signals, samplers, and mixers. It explains the ideal conditions necessary to minimize loading effects and the significance of resistance values in feedback networks. Different naming conventions for feedback configurations are also introduced, emphasizing their impact on system behavior.

Sections

Feedback System (Part B)

In this section, the various configurations of feedback systems using voltage and current signals are discussed, highlighting their characteristics and operational principles.

91.1 Section Overview

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Configuration 1: Voltage Sampling and Voltage Mixing Feedback

This section covers the concepts of voltage sampling and voltage mixing feedback configurations in electronic circuits, highlighting their significance and operational characteristics.

91.2 Section Overview

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91.2.1 Ideal Model and Loading Effect

This section covers the ideal model for feedback systems in analog electronic circuits, emphasizing configurations, loading effects, and their implications on signal processing.

91.2.2 Naming Conventions

This section discusses various configurations of feedback systems, emphasizing their naming conventions based on the types of samplers and mixers used.

Configuration 2: Current Sampling and Current Mixing

This section describes current sampling and mixing configurations in feedback systems, detailing the components, connections, and effects on feedback signals.

91.3 Section Overview

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91.3.1 Signal Connections and Ideal Model

This section discusses different configurations of feedback systems in analog electronic circuits, focusing on signal connections, load effects, and ideal modeling.

91.3.2 Polarity and Naming Conventions

This section explains the polarity and naming conventions utilized in feedback systems, focusing on various configurations related to voltage and current signals.

Configuration 3: Voltage to Current (Transconductance)

This section discusses the configuration where voltage is converted to current using transconductance in feedback systems.

91.4 Section Overview

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91.4.1 Ideal Conditions and Naming Conventions

This section discusses various configurations of feedback systems, focusing on ideal conditions and appropriate naming conventions based on the characteristics of signal mixing and sampling.

Configuration 4: Current to Voltage (Transimpedance)

This section discusses the transimpedance configuration in feedback systems, focusing on the interaction between current and voltage signals.

91.5 Section Overview

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91.5.1 Voltage Sampling and Current Mixing

This section discusses configurations for voltage sampling and current mixing in feedback systems, exploring their implications and applications.

91.5.2 Practical Considerations

This section discusses the various configurations of feedback systems using voltage and current, including their practical considerations and implications on performance.

General Considerations for Practical Scenarios

This section explores the various configurations of feedback systems in analog electronic circuits, discussing their characteristics and assumptions in ideal and practical scenarios.

91.6 Section Overview

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91.6.1 Effects of Non-Ideal Resistance

This section explores the impact of non-ideal resistances in feedback systems and their configurations in analog electronic circuits.

91.6.2 Desensitization Factors

This section discusses desensitization factors in feedback systems, focusing on different configurations affecting signal processing in analog electronic circuits.

Learning Objectives

  • Feedback systems can be classified based on the types of signals and their connections.

  • Ideal conditions such as infinite input resistance and zero output resistance enhance performance by minimizing loading effects.

  • Naming conventions are vital for correctly identifying configurations and their impacts on system characteristics.

Key Concepts

Feedback System

A system that uses its output to influence its input in order to maintain the desired output.

Voltage Sampling

The process of measuring voltages at the output port, which influences the feedback signal.

Current Mixing

The process of combining current signals from multiple sources before transmission through the system.

Shunt and Series Connections

Configurations used in feedback systems to describe how signals are sampled and mixed.

Desensitization Factor

A factor that quantifies how feedback can modify the input and output resistances of a feedback system.

Practice Exercises

Total Questions

4

Estimated Time

8 min

Passing Score

70%

Instructions

  • Read each question carefully
  • You can use hints if you need help
  • Complete all questions before submitting