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Chapter II : Diodes : Functions of Rectifier Diodes

A characteristic of diodes is that current flows (forward direction) or current does not flow (reverse direction) depending on the direction of applied voltage. This works to convert alternating current (AC) voltage to direct current (DC). The electrode terminals are called the anode (A) and the cathode (K), and current flows when the anode electrode is at positive potential.

Symbol of diode and names of its electrodes
Fig. 2-1(a) Symbol of diode and names of its electrodes
Example of appearance of diode
Fig. 2-1(b) Example of appearance of diode
Polarity of diode
Fig. 2-1(c) Polarity of diode
Typical characteristic of diode
Fig. 2-1(d) Typical characteristic of diode
Typical function of diode
Fig. 2-2 Typical function of diode

Note: The cathode "K” comes from the German "Kathode."

Chapter II : Diodes

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