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Diodes

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DEFINITION: A diode is a specialized electronic component with two electrodescalled the anode and the cathode. Most diodes are made with semiconductor materials such as silicon,germanium, or selenium. Some diodes are comprised of metal electrodes in a chamberevacuated or filled with a pure elemental gas at low pressure. Diodes can be usedas rectifiers, signal limiters, voltage regulators, switches, signal modulators,  … 
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DIODES DEFINITION (continued): …  signal mixers, signal demodulators, and oscillators. The fundamental property of a diode is its tendency to conduct electric current in only one direction. When thecathode is negatively charged relative to the anode at a voltage greater than a certain minimum called forwardbreakover, then current flows through the diode. If the cathode is positivewith respect to the anode, is at the same voltage as the anode, or is negative by anamount less than the forward breakover voltage, then the diode does not conductcurrent. This is a simplistic view, but is true for diodes operating as rectifiers,switches, … 
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