E.J. Jurich con Vacuum Tube Amplifier Basics
Hobbyist interested in learning about vacuum tube circuits may find much of the available literature highly technical. Written with the home hobbyist in mind this book covers electronics related to vacuum tube amplifiers. Written in sections that are concise many with examples and illustrations. For the novice not versed in electronics, electronic principles are included along with several sections covering electronic and audio basics. Vacuum tube amplifying circuits are explained in simple terms. Math is primarily basic math and a few simple formulas all solvable with a standard 12 digit calculator and presented with examples. Principles of vacuum tube operation includes function of grids, effect of tube capacitance, tube resistance and heat dissipation. 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 bias, bias supplies, calculating voltage gain and more. A table of component values for the popular 12AX7 in various operating parameters simplifies amplifier stage design. Project circuits have parts list and component layouts for a Line Amplifier with 25db gain, Triode Balanced-Unbalanced Input, Tone Control Stage, Turntable Pre-Amplifier, 6V6SE Stereo Amplifier, 6V6SE Monoblock Amplifier and a 30 Watt Monoblock Amplifier designed for tube rolling using various type output tubes. Current version of book was updated in April of 2017.