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Photodiode Detectors

14.1 A photodiode with responsivity 0.3 A/W and dark current 2 nA is biased in the photoconductive mode, with a 9 V battery and 500 k_ resistor. Make a sketch like that of Fig. 14-3, showing the load line and the diode curves for incident powers from zero to 100 _W in steps of 20 _W. Circle the operating point for an incident power of 40 _W, and determine the approximate diode voltage from the graph.


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