vacuum tubes

Exploring WWII Military Multimeter: A Look at Vintage Technology

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Exploring WWII Military Multimeter: A Look at Vintage Technology

Search on WeChat Technical Training This is our main character today, a multimeter that traveled across the ocean with the Flying Tigers to the front line of the anti-fascist war. Range switch knob. All equipment back then used vacuum tubes, and some tubes required as high as 1500V, hence there is a 1500V voltage range. … Read more

How Semiconductor Chips Work

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How Semiconductor Chips Work

In the previous article (A Beginner’s Guide to Semiconductor Chips), Xiaozhao introduced some basic knowledge about semiconductor chips. In today’s article, we will continue discussing the process of chip creation—from vacuum tubes, transistors to integrated circuits, from BJT, MOSFET to CMOS, how chips have developed and how they actually work. █ Vacuum Tubes (Electron Tubes) … Read more