A power diode is a two terminal p-n junction device and a p-n junction normally formed by allowing diffusion and epitaxial growth structure of a power diode and symbol are shown in figure below. High power diodes are silicon-rectifiers that can operate at high junction temperatures.Power diodes have larger Power,Voltage and Current handling capabilities than ordinary signal diodes.In addition,the switching frequencies of power diodes are low as compared to signal diodes. The voltage current characteristics of power diodes is shown in figure below When the anode potential is positive with respect to cathode,the diode is said to be forward biased,the diode conducts and behaves essentially as a closed switch.A conducting diode has a relatively small forward voltage drop across it and the read more

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