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Shown below is the diagram of an ideal super diode. When the input voltage Vin is positive, then the output voltage Vout = ?
b Explanation: Input is positive, hence it is amplified by the operational amplifier which switches the diode on. Current flows through the load & because of the feedback, the output voltage is equal to the input voltage.
b
See lessExplanation: Input is positive, hence it is amplified by the operational amplifier which
switches the diode on. Current flows through the load & because of the feedback, the
output voltage is equal to the input voltage.
In a certain power electronics application, it is required that the voltage at the load terminals is to be kept within a certain range of voltages only. Among the device listed below, which would be the most ideal choice for this application?
c Explanation: Zener diode is used as a voltage regulating device.
c
See lessExplanation: Zener diode is used as a voltage regulating device.
In a Schottky diode, the silicon layer acts as a _____________
b Explanation: The metal acts as the anode and the semiconductor as a cathode.
b
See lessExplanation: The metal acts as the anode and the semiconductor as a cathode.
As compared to a p-n junction device of equal rating, the Schottky diode has
a Explanation: Low reverse voltage rating is the only drawback against a p-n junction diode.
a
See lessExplanation: Low reverse voltage rating is the only drawback against a p-n junction
diode.
If the doping levels of the semiconductor is increased, then the width of the depletion layer
b Explanation: Higher the doping, more the number of charge carrier available to neutralize the opposite charges on the junction.
b
See lessExplanation: Higher the doping, more the number of charge carrier available to
neutralize the opposite charges on the junction.
In a Schottky diode, the aluminum metal acts as a __________
a Explanation: The Al (Metal) always acts as the anode.
a
See lessExplanation: The Al (Metal) always acts as the anode.
Schottky diodes are also called as
b Explanation: Due to the metal used to carry the current, it is also called as a hot carrier diode.
b
See lessExplanation: Due to the metal used to carry the current, it is also called as a hot carrier diode.
When reverse breakdown occurs in a diode
d Explanation: Recall the I-V curve of a diode in the 3rd quadrant.
d
See lessExplanation: Recall the I-V curve of a diode in the 3rd quadrant.
Ideally the voltage drop across a conducting diode must be
b Explanation: Ideal conduction = No losses.
b
See lessExplanation: Ideal conduction = No losses.
A Schottky diode can be switchd off much faster than an equivalent p-n junction diode due to its
b Explanation: Due to the metal-silicon junction there are no stored charges, hence no reverse recovery time due to which the switching is faster.
b
See lessExplanation: Due to the metal-silicon junction there are no stored charges, hence no
reverse recovery time due to which the switching is faster.