DESIGN

Table of Contents:

1. Introduction
2. Why Build with Thermatrons?
3. Inside the Thermatron
4. Numbering Systems, Bases, Bulbs
5. Thermatron Characteristics
6. Keeping the Filaments Lit
7. Power Thermatrons
8. Thermatron Homebrew Techniques
9. Designing with Triodes
10. Designing with Pentodes
11. Designing Thermatron Oscillators
12. Thermatron Mixers
13. Designing Power Amplifiers
14. So Many Thermatrons, So Little Time
15. Get to Know a Thermatron

There is nothing else in print today that compares with “Hollow State Design!”It pulls together, in one easy-to-read book, thermatron types and their characteristics, thermatron homebrew techniques, and practical how-to design of audio and RF triode and pentode circuits, oscillators, mixers, power amplifiers, and many experimental circuits.

The book is quality printed on 333 pages, standard 8.5” x 11″ in size, and is packed with hundreds of photos, schematics, diagrams, plus charts and formulas that are essential when working with electron tube technology in the 21st Century.

The 3rd Edition has nearly 100 pages of new material and revisions including new chapters on thermatron mixers, power tubes, and power amplifier design. In addition all chapters got updates, corrections, and new material.

The author, Grayson Evans, KJ7UM has been licensed since 1962, grew up on thermatrons, spent 40 years in the electronics industry, and is bored to death with solid-state!