ECE :: Electronic Devices and Circuits
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A long specimen of P type semiconductor material
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For BJT, under saturation condition
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An inductor filter has a ripple that __________ with load resistance and consequently is used only with relatively __________ load currents.
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In a JFET
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Introducing a resistor in the emitter of a common amplifier stabilizes the d.c. operating point against variations in
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Consider the following statement S1 and S2.
S1: The β of a bipolar transistor reduces if the base width is increased.
S2: the β of a bipolar transistor increases if the doping concentration in the base is increased.
Which one of the following is correct? -
Assertion (A): A BJT can be used as a switch.
Reason (R): In forward active mode emitter base junction is forward biased and base collector junction is reverse biased.
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The concentration of minority carriers in an extrinsic semiconductor under equilibrium is
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The mean life time of the minority carriers is in the range of a few
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Choose the correct match for input resistance of various amplifier configurations shown below configuration.
CB : Common Base LO : Low CC : Common Collector MO : moderate CE : Common Emitter HI: High
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