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This course has images and animations to explain current flow through vacuum or gases at low pressure , such as in cathode ray tubes etc.
Following topics are covered:
1. Current through gases at low pressure.
2. Cathode rays.
3. Thomson’s experiment : to find e/m of electron.
4. Millikan Oil-drop experiment- to find ‘e’
5. Thermionic emission.
6. Diode valve.
7. Half-wave rectification.
8. Full-wave rectification.
9. Triode valve.
10. Triode as amplifier.

Solved problems and test questions are given at the end.