Transcription: The topic for this lesson is the diode. The rectifier diode is a single PN junction device. One half of the diode is a P-type semiconductor and the other half is an N-type semiconductor. The N zone is called the cathode and the P zone is called the anode. The structure and symbol is shown in the illustration. The arrow in the schematic representation points in the direction of conventional current flow. When a voltage source is connected to a diode in the way shown, it is forward biased. The positive terminal is connected to its anode through a resistor. The negative terminal of the source is ...
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