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Step 1 of 2 4.027P Refer to Figure P4.27 in the textbook. The saturation current of a diode is directly proportional to the junction area. Hence, the saturation current of diode is 10 times that of Consider that the current across diode be and I₂ be the current across diode The diode current is, (1) The current through the diode is, (2) Divide equation (2) by equation (1). Substitute 10 mA for 1, 3 mA for and 0.025 V for The output voltage is, =78.7 mV Thus, the value of is 78.7 mV . Step 2 of 2 Consider the following relation: Substitute 10 mA for 60 mV for V and 0.025 V for Thus, the current to get a voltage of 60 mV is 4.75 mA