TV-type CRTs use magnetic fields generated by coils located outside the vacuum tube to deflect an electron beam, which is scanned line by line across the screen to build up what's called a raster image. Oscilloscope-type CRTs are different from those found in televisions and most computer monitors. The kit works with many CRTs that were designed to be used in oscilloscope-type displays and operated with relatively low voltages-in the range of hundreds, rather than thousands, of volts.Īs CRTs are becoming as unfamiliar to modern engineers as amplifier tubes did to the transistor generation, a quick recap of a few salient points is likely in order here. This attention-hogging accelerator was, of course, the cathode-ray tube (CRT), which reigned supreme as the electronic display technology for decades, before being unceremoniously relegated to the figurative and literal trash heap of history by flat-screen technologies.īut there are still CRTs to be found, and you can put some of them to great use with Howard Constantine's US $100 Oscilloscope Clock Kit. Engineers and scientists at their benches, and folks at home in their living rooms, would carefully arrange themselves to watch the dancing glow of a beam of subatomic particles smashing into a phosphorescent screen. Once upon a time, there was a type of particle accelerator so popular that it was mass-produced by the million.
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