Part 3/7:
Electron flow is opposite the conventional current flow route, flowing from the cathode to the anode, contrary to the usual plus-to-minus direction.
Rectification: Converting AC to DC
One vital application of this principle involves converting alternating current (AC) into direct current (DC). By integrating a vacuum tube into an AC circuit, only the positive halves of the AC cycle can produce a current. When the anode is negative relative to the cathode, electrons are repelled, and no current flows—in essence, creating a one-way street for current.