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Problem:
The current voltage characteristic [ ID versus VD] of a semiconductor diode for VD > 0 [forward bias] is given in Figure Under reverse bias conditions [VD < 0] ID = 0.
Fig Forward Bias Current - Voltage Characteristic of a Semiconductor Diode (a) Construct a suitable piecewise linear equivalent circuit for the diode giving the values of the elements where appropriate.
(b) The diode is to be used in the simple rectifier circuit shown in Figure. By replacing the diode by the piecewise equivalent circuit determined in (a) sketch the waveforms of the diode current iD(t), the supply voltage vs(t), and the load voltage vL(t).
(c) By replacing the diode by the piecewise equivalent cicuit determined in (a) calculate the maximum diode current, the maximum diode voltage and the maximum load voltage in the simple rectifier circuit shown in Figure.
(d) What would the maximum diode current be if the diode was replaced by an ideal diode?
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