Homemade Cathode Ray Tube Oscilloscope.

More info is now available. http://www.sparkbangbuzz.com/crt/crt6...

Homemade Cathode Ray Tube with cold cathode. Vacuum is somewhere between 100 - 200 microns, easily attainable with amateur equipment. Vertical deflection is done using an electrostatic plate.   This CRT is used as an oscilloscope to display a signal from a sound synthesizer.

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