From the piece-wise model of a diode we get: dynamic resistance (rd) of the diode is 50 mΩ and knee voltage (vd) is 0.6V. This diode is connected in series with a 40V square wave voltage source (min=0V, peak=40V) and 20Ω resistance (RL). Forward voltage drop across the diode is_________Volts Select one:a. 0.6b. 0.8c. None of the aboved. 0.5e. 0.7
Question
From the piece-wise model of a diode we get: dynamic resistance (rd) of the diode is 50 mΩ and knee voltage (vd) is 0.6V. This diode is connected in series with a 40V square wave voltage source (min=0V, peak=40V) and 20Ω resistance (RL). Forward voltage drop across the diode is_________Volts Select one:a. 0.6b. 0.8c. None of the aboved. 0.5e. 0.7
Solution
The forward voltage drop across a diode is the voltage required to overcome the potential barrier in the diode and allow current to flow. In this case, the knee voltage (vd) of the diode is given as 0.6V. This is the voltage at which the diode starts to conduct current in the forward direction. Therefore, the forward voltage drop across the diode is 0.6V. So, the correct answer is a. 0.6.
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