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Principles of Transistor Circuits, 9th Edition
book

Principles of Transistor Circuits, 9th Edition

by S Amos, Mike James
March 2000
Intermediate to advanced content levelIntermediate to advanced
416 pages
11h 9m
English
Newnes
Content preview from Principles of Transistor Circuits, 9th Edition
Chapter 9

D.C. and pulse amplifiers

Introduction

The fundamental circuits of Figs. 7.7 and 7.10 for two-stage current and voltage amplifiers are also used for d.c. and pulse amplification. Voltage amplifiers often include an emitter-follower stage to give a high input resistance or a low output resistance, and negative feedback is commonly applied over the three stages.

D.C. amplifiers

These are amplifiers used for magnifying small voltages or currents so that slow variations in them can be more readily seen and measured. To ensure a good response at the very low frequencies of interest the amplifiers are usually direct-coupled.

D.C. amplifiers are used in electro-cardiographs, computers, oscilloscopes, pyrometers and in sensitive measuring instruments ...

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Publisher Resources

ISBN: 9780750644273