UNIT 6: DIODES AND RECTIFIERS
INTRODUCTION
A diode is a component that allows current to flow in only one direction. It is like a one-way valve for electricity. Diodes are used to convert AC to DC, protect circuits, and create light
THE ELECTRONICS ENGINEER’S HANDBOOK 1
(LEDs).
STORY 1: How a Diode Works
A diode has two terminals: anode (+) and cathode (-). Current can flow from anode to cathode, but not from cathode to anode. When the anode is more positive than the cathode, the diode is