Many people have given us a lot of encouragement after seeing our original design of the VFD clock, which is one of the reasons we persist in making VFD clocks. To help more people learn about this unique and beautiful fluorescent display, we have written this blog. First, the vacuum fluorescent display (VFD) is an improved version of the vacuum tube. Blue-white ghost light from the former Soviet Union｜VFD Fluorescent Tube Clock. Classic “black hat” vacuum fluorescent tubes The first vacuum fluorescent device was developed by Philips in the 1950s....
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