Question

Are vacuum tubes dangerous?

Answer 1

The basic working principle of a vacuum tube is a phenomenon called thermionic emission. It works like this: you heat up a metal, and the thermal energy knocks some electrons loose. ... When the cathode is heated, and a positive voltage is applied to the anode, electrons can flow from the cathode to the anode.Jan 18, 2018

Vacuum Tubes: The World Before Transistors - engineering.com

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All vacuum tube circuits operate at dangerous voltage levels. The 845SE and other powerful tube amplifiers operate at over 1000 volts. Accidental contact with an energized circuit of this nature would likely be instantly lethal.