Summary of Explaining and Hooking Up Cathode Ray Tubes (CRT)

00:00:00 - 00:20:00

This video discusses how cathode ray tubes work, and how to build and use them. CRTs use a heated filament to create an electron beam, which is then attracted to various electrodes on the front of the tube. When the beam hits the screen, the phosphor is illuminated, producing an image. CRTs can be dangerous if not handled properly, and should be used with caution.

• 00:00:00 In this video, Eric and Marc explain how cathode ray tubes work and how to hook them up. CRTs use a heated filament to create an electron beam that is attracted to deflection plates and other electrodes on the front of the tube. When the beam hits the screen, the phosphor is illuminated, producing an image on the screen. CRTs can be dangerous if not handled properly, and should be used with caution.
• 00:05:00 This video explains how cathode ray tubes work, and discusses the various parts that make up the tube. One of the most important scientists in the development of CRTs was J.J. Thomson, who discovered the electron in 1897. German Nobel Laureate Ferdinand Braun was the first to add an extra acceleration anode to the tube, which allowed for the first oscilloscope. Arthur Wehnelt was responsible for the development of hot platinum filaments as an electron emitter, and the Wehnelt cylinder, or grid, which is the first part of an electron lens. Finally, Eric teaches viewers how to build a CRT using supplies that are already on hand.
• 00:10:00 This video explains how cathode ray tubes (CRTs) work, and shows how to move the beam around. CRTs use an isolation transformer to ensure that the filament and cathode are at the same voltage. CRTs also have many electrodes, including the grid, focusing assembly, and astigmatism electrode.
• 00:15:00 In this video, Eric demonstrates how to use a vertical oscilloscope to detect 60 cycle interference from a transformer nearby.
• 00:20:00 CRTs are used to display images on televisions and computer screens. This video discusses the various problems that can occur with CRTs, including noise from the power supply and defects that come through the tube. CRT frequency can be set to a multiple of 60 Hertz to reduce the amount of noise that is seen. Finally, Eric demonstrates his triple scope clock, which uses a CRT to display the time.