How does a vacuum tube work (GU-50 power pentode autopsy)

Tesla BM370 vacuum tube oscilloscope teardown and restoration

5V 2A SMPS - test, teardown, schematic, explanation, improvements

Vacuum Tubes/Valves by Mullard ~Manufacture for Audio TV Radio

CompTIA A+ Certification Video Course

Lecture 1: Introduction to Power Electronics

Making OpenSource USB C 3.0 Industrial HQ camera with Lattice FPGA, Cypress FX3 C Mount IMX477

24V 10A 240W power supply - test, failure, teardown and fix

How Tube Amplifiers Work, Part 1: The Power Supply

How Resistor Work - Unravel the Mysteries of How Resistors Work!

Vacuum Tubes: Episode 5 – The Pentode

Pirl Charger test & teardown (4x 2.7A 5V USB)

What's inside this cheap insect zapper

How To Make Electron Tubes - P&C Electronics

AT&T Archives: A Modern Aladdin's Lamp, about vacuum tubes,1940

How do Graphics Cards Work? Exploring GPU Architecture

Building a Sleep Lamp (blue-free circadian LED)

Questionable 2-in-1 USB charger - test, schematic & modifications

Linear DC Power Supplies - Designing & Building Custom DC Power Supplies

How A Tube Works

Building a 1920s Tube Amplifier (And Tubes!)