Amplifying with Vacuum Tubes

Amplifying with Vacuum Tubes PDF

Author: Carl Gauss

Publisher:

Published: 2018-07-13

Total Pages: 92

ISBN-13: 9781721146086

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Vacuum tube fundamental circuit design written for the novice interested in vacuum tube amplifier construction. A brief concise book covering several factors of circuit design including bias requirements, voltage gain requirements and power supply requirements.To help understand circuit operation rather than use traditional schematic drawings pictorial illustrations are used. In several sections circuit operation is demonstrated using illustrations along with a vacuum tube breadboard. Experiments are used to correlate circuit design to actual working circuits.Circuit calculations involving fundamental electronic formulas can be performed using a standard twelve digit calculator. Examples of how to solve calculations are provided. Basic electronic knowledge of voltage, current and ohms law related to vacuum tube circuit design is included where appropriate.The 70+ pages of circuit design contain enough information to design high quality vacuum tube amplifier circuits. The last few pages of the book have related information including how to use sound pressure levels to determine amplifier power required to produce desired loudness.

The TAB Guide to Vacuum Tube Audio: Understanding and Building Tube Amps

The TAB Guide to Vacuum Tube Audio: Understanding and Building Tube Amps PDF

Author: Jerry C. Whitaker

Publisher: McGraw Hill Professional

Published: 2011-11-05

Total Pages: 368

ISBN-13: 0071753222

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Incorporate the "tube sound" into your home audio system Learn how to work with vacuum tubes and construct high-quality audio amplifiers on your workbench with help from this hands-on, do-it-yourself resource. The TAB Guide to Vacuum Tube Audio: Understanding and Building Tube Amps explains tube theory and construction practices for the hobbyist. Seven ready-to-build projects feature step-by-step instructions, detailed schematics, and layout tips. You'll also find out how to tweak the projects, each based on a classic RCA design, for your own custom-built amps. Coverage includes: Principles and operational theory behind vacuum tubes Tube nomenclature, applications, and specifications Circuit layout, connections, and physical construction Finding and selecting the right components for the project Power supplies for vacuum tube circuits Preamplifier and power amplifier circuits Performance measurement Safety, maintenance, and troubleshooting techniques Tips on building your own tube-based system—and having fun in the process This book is intended for hobbyists interested in adding the tube sound to any audio system. (Readers looking for high-performance audiophile books are urged to consider the McGraw-Hill books by Morgan Jones.) Learn more at www.vacuumtubeaudio.info Make Great Stuff! TAB, an imprint of McGraw-Hill Professional, is a leading publisher of DIY technology books for makers, hackers, and electronics hobbyists.

The Tube Amp Book

The Tube Amp Book PDF

Author: Aspen Pittman

Publisher: Hal Leonard Corporation

Published: 2003-09

Total Pages: 428

ISBN-13: 9780879307677

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THE TUBE AMP BOOK WITH AUDIO ONLINE ERRATA SHEET ADDED.

Vacuum Tube Gain Controlled Amplifier

Vacuum Tube Gain Controlled Amplifier PDF

Author: E. J. Jurich

Publisher: Createspace Independent Publishing Platform

Published: 2013-08-04

Total Pages: 30

ISBN-13: 9781534922778

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A project book for the advanced builder, includes circuit diagrams and circuit descriptions to build a gain controlled amplifier also referred to as a compressor. This type of amplifier is used to prevent over-driving audio systems by maintaining an average output and keep levels in a more comfortable listening range. This particular design uses all triode vacuum tubes including a triode gain control stage, all stages are built around the popular 12AX7 tube. Triodes are used because they produce primarily second harmonic content when harmonic distortion occurs, the addition of low-level second harmonics enhances the sound. The design uses a variable compression ratio, the ratio becomes tighter as the input level increases past the compression threshold. This allows soft passages to retain high dynamics while imposing more control on loud passages. The amplifier uses broadband compression to maintain the original sound balance. A slow gain control is used as an average level reference on which a faster gain control rides, ratio between the two is adjustable. Gain control is non-intrusive and dynamics are maintained, this is not a brick wall processor. Useful gain control is a 30DB range.

Design of an Integrated Push-Pull Tube Amplifier Made Easy

Design of an Integrated Push-Pull Tube Amplifier Made Easy PDF

Author: Giuseppe Amato

Publisher:

Published: 2018-08-30

Total Pages: 132

ISBN-13: 9781719810500

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This book is a beginner's guide that brings you, from the basic concepts of vacuum tubes, up to the design of a complete integrated push-pull vacuum tube amplifier.This book first introduces the needed principles, to designing and understanding vacuum tube amplifiers. Then, it considers all relevant aspects for designing an integrated push-pull vacuum tube amplifier, including the power supply unit. Finally, a real integrated push-pull vacuum tube amplifier is designed from scratch, using the various concepts discussed in this book.This book makes an extensive use of figures and proposes several practical examples, to design various parts of the circuits and to compute values of the needed components. This significantly contributes to simplify some possibly difficult concepts addressed.The book is structured as follows: Chapter 1: "Introduction" introduces the book itself and gives some suggestions on how to read it.Chapter 2: "Vacuum tube basics" introduces the needed concepts to understand vacuum tubes. This is a very basic introduction needed for the non-initiated. If you already know what vacuum tubes are and how they operate, you can skip this chapter.Chapter 3: "Vacuum tubes as amplifiers" discusses how vacuum tubes can be used to obtain an amplifier. It introduces the concepts of operating conditions, loadline, biasing techniques, and amplifier classes.Chapter 4: "Integrated push-pull vacuum tube amplifier" goes into the details of designing an integrated push-pull vacuum tube amplifier. It discusses the single-ended and push-pull configurations, the various needed stages (power, phase-split, and input stages), and global negative feedback.Chapter 5: "Power supply unit" discusses how to build the power supply unit for a vacuum tube amplifier. It introduces rectifier configurations and filters to reduce voltage ripple, to have a quiet amplifier. It explains how to estimate expected output DC voltage, ripple, and current delivered. It also discusses how to design power supply for the fixed bias circuit and for the filaments of the vacuum tubes.Finally, Chapter 6: "Step by step design of a push-pull tube amplifier" use all needed notions to design an entire integrated push pull vacuum tube amplifiers. It discuss the design of the power stage, the phase-split, and the input stage. It discusses the design of the global negative feedback loop. It also provides the design of the corresponding power supply unit

Introduction to Design with Electron Tubes

Introduction to Design with Electron Tubes PDF

Author: Jose Ignacio Dominguez Simon

Publisher: Independently Published

Published: 2017-09-10

Total Pages: 79

ISBN-13: 9781549714184

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- Quickly learn how most common electron tubes operate, their main properties and limitations and how to design typical amplifier stages.- Measure any tubes and characterise them.- Understand the Miller effect and why it's the origin of all other tubes after the triode.- Simulate the response of a tube with your computer.- Includes complete example with step by step design and explanations.- Don't be limited by stablished designs and make your own!

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