Appendix B

Bipolar Amplifiers

Abstract

Amplifiers turn a small signal into a larger, more powerful version of the same. Mastering amplification is useful in itself as well as an important exercise in circuit design. Amplifier characteristics include gain, noise, and bandwidth. This chapter concentrates bipolar amplifiers. As a design example, we will work through a two-stage amplifier.

Keywords

Amplifiers; Bipolar amplifiers; Gain

B.1 Introduction

Section B.2 develops models for bipolar transistors while Section 3.5 introduces standard circuit topologies for bipolar amplifiers. Section B.4 uses these models and circuits to analyze the design of a simple bipolar amplifier. Section B.5 works through the design of a two-stage amplifier.

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