What is a Vacuum Tube - Thermionic Valve » Electronics Notes

Physics Notes for High School: Cathode Ray Oscilloscope: Thermionic Emission

Vintage Mullard M8098 CV4048 85A2 thermionic valve / vacuum tube

The Internal Life of Vacuum Tubes

What is a Vacuum Tube - Thermionic Valve » Electronics Notes

Introduction

Vacuum Tubes

Vintage Mullard EB91 (6AL5 6D2) thermionic valve / vacuum tube

Vacuum triode

Super Transconductance Tubes

Almanac: The vacuum tube - CBS News

Valves (tubes) and Thermionic Emission

Advantages and Disadvantages Thermionic Valve