A collection of fresh speeches for teenagers.

Table of Contents

Contents: History of the Thermionic Valve; Operation of the Electron Tube; Wiring Tube Circuits; CD/Line Amplifier; Hi-Fi Amplifier; General-Purpose Line Amplifier; Pick-Up/Line Amplifier with SRPP Output; Hi-Fi Output Amplifier with 2xEL34; Class A Stereo Output Amplifier with 2xKT88; Miscellaneous Amplifiers; Guitar/Keyboard Amplifiers; Guitar Amplifier with Transistor Input; Voltage Regulation with Valves; Heater-Voltage Supplies; SRPP Amplifier for CD Players; Track Layouts of PCBs.