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A Book For The Electronic Hobbyist

Vacuum Tube Amplifier Basics

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Vacuum Tube Amplifier Basics eBook


Vacuum Tube Amplifier Basics



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The PDF version has project layouts in color.


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There is a growing number of audio enthusiasts and hobbyist interested in creating their own vacuum tube amplifiers. If one has the necessary technical information, high quality tube amplifiers can be assembled using point-to-point hand wiring.

For the novice not versed in electronics several sections of the book cover electronic basics. Includes how capacitors work, voltage, current, ohms law, reading circuit drawings plus other related information.

Principles of vacuum tube operation includes function of grids, effect of tube capacitance, tube resistance, heat dissipation and voltage gain. A table of component values for the popular 12AX7 in various operating parameters simplifies pre-amplifier stage design. Power supply sections cover vacuum tube and solid state rectifier conversion of AC to DC and DC filtering. A sample power supply is used to explain calculating loads, determining required transformer ratings and component values. Includes high voltage, bias and filament supplies.

Working with electronics and vacuum tube circuits requires some math. Circuit calculations in this book use various forms of addition, subtraction, multiplication and division. Formulas are all solvable using a standard 12 digit calculator. Calculations are presented with examples.

Vacuum Tube Amplifier Basics Book
Projects have layout drawings

Vacuum Tube Amplifier Basics Book
Projects have layout drawings

Projects include a line amplifier with 25db gain, triode balanced-unbalanced input stage, tone control stage, turntable pre-amplifier, 6V6SE Class A stereo amplifier, 6V6SE Class A monoblock amplifier, 30 watt monoblock amplifier and a 5 watt guitar amplifier with adjustable overdrive. The 30 watt monoblock amplifier is designed for tube rolling using various type output tubes. Projects include parts list and component layout drawings.

This book is occasionally checked for corrections or outdated information and revised. When shopping around be sure you are buying a current version with the latest revisions. The latest revision for this book is dated Dec, 2018. A revision date is printed in the book after the title page. Third party sellers may list the book as new, but it may be an older printing without current revisions or corrections. If you purchase through the link above, you will have the most current eBook revision. Current print versions are sold through Amazon or LULU book store.

vacuum tube amplifiers
High Voltage Audio
New to electronics or experienced, when working with vacuum tube equipment be careful where you put your hands.

DISCLAIMER assumes no responsibility for damage, injury or otherwise related to any use of information on this site or given by other means. Many electronic circuits, in particular vacuum tube circuits, operate with dangerous voltage and current. Always excercise care when working with electronic circuits.

EJ Jurich has no association with sites offering free downloads of my book. A site that offers free downloads or wants you to register beware. If the download is free, then why would they require you to register? Free download or torrent sites are notorious for passing malware on to you. Be very careful.

copyright 2014 -
P.O. Box 658
Grinnell, IA 50112