Q341
Open questionBootstrap voltage sweep generator uses
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Analog Electronics
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Q342
Open questionUsing the incremental low frequency small-signal model of the MOS device, the Norton equivalent resistance of the following circuit is
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Q343
Open questionThe approximate O/P Frequency of 555 Oscillator for RA = RB = 2.2 kΩ and C = 2000 pF-
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Q344
Open questionThe current gain of a BJT is
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Q345
Open questionThe cascade amplifier is a multistage configuration of
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Q346
Open questionAn OPAMP-based comparator drives an LED, with VF = 1.6V, the current through which is regulated by a 1 kΩ resistor and a silicon diode in series. Assume a ±10V DC voltage is applied as ±VCC respectively to the op-amp. Then find out the current through the LED when the comparator output is +10V.
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Q347
Open questionBlocking oscillators are used as
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Q348
Open questionWhat is the formula of lower cut-off frequency of an RC coupled amplifier?
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Q349
Open questionA common emitter transistor amplifier has a collector load of 10 kΩ. If its hfe = 100 and hie = 2 kΩ (hre ≈ hoe ≈ 0), the voltage amplification of the amplifier is nearly equal to
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Q350
Open questionWhen the gate-to-source voltage (VGS) of a MOSFET with threshold voltage of 400 mV, working in saturation is 900 mV, the drain current is observed to be 1 mA. Neglecting the channel length modulation effect and assuming that the MOSFET is operating at saturation, the drain current for an applied VGS of 1400 mV is
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Q351
Open questionThe negative feedback in an amplifier leads to which one of the following?
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Q352
Open questionThe equivalent dc output voltage of a half wave rectifier is . . . . . . . . the equivalent dc output voltage of a full wave rectifier.
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Q353
Open questionFor the circuit given in the figure, consider the following statements:
1. The output VO will consist of a positive and a negative spike if RC << T.
2. The output VO will be similar to Vi if RC >> T.
3. The output will have a higher rise time if RC is made progressively smaller than T.
Of these statements:
1. The output VO will consist of a positive and a negative spike if RC << T.
2. The output VO will be similar to Vi if RC >> T.
3. The output will have a higher rise time if RC is made progressively smaller than T.
Of these statements:
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Q354
Open questionCascode amplifier when compared with a simple common-emitter amplifier provide which of the following?
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Q355
Open questionIn the circuit shown in the given figure, the approximate voltage at the transistor
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Q356
Open questionWhich is not considered as a linear voltage regulator?
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Q357
Open questionA Schmitt trigger is a digital circuit that produce
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Q358
Open questionThe transistor shunt regulator shown in the figure has a regulated output voltage of 10 V, when the input varies from 20 V to 30 V. The relevant parameters for the zener diode and the transistor are: VZ = 9.5, VBE = 0.5 V, β = 99. Neglect the current through RB. Then the maximum power dissipated in the zener diode (PZ) and the transistor (PT) are
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Q359
Open questionThe following configuration is an example of positive feedback system:
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Q360
Open questionBarkhausen criterion is related to
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