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Topic:Kt Kingtronics Diodes
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There are a number of different electronic devices which tend to be called diodes.Although they're made differently they all have three things in common.They have two leads like a resistor.The current they pass depends upon the voltage between the leads.They do not obey Ohm's law!As an example we will use a typical diode called a pn-junction. This allows us to explain behaviour of diodes.The function of a diode is to allow current in one direction and to block current in the opposite direction.The terminals of a diode are called the anode and cathode. There are two kinds of semiconductor diodes: a P-N junction diode, which forms an electrical barrier at the interface between N- and P-type semiconductor layers, and a Schottky diode, whose barrier is formed between metal and semiconductor regions.Remember, however, that there are other sorts of diodes which are built differently but show the same general behaviour.
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