ECE :: Analog Electronics
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A radio frequency choke permits an easy flow of __________ current and at the same time it offers a very impedance to __________ currents.
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Assertion (A): In an op-amp the gain bandwidth product equals ffinity
Reason (R): The change in open loop gain of an amplifier has almost no effect on closed loop gain
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Lower chip area requirements of MOS is advantage in
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For high frequency response of a transistor amplifier, suitable model to use is
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Harmonic distortion in CB amplifier may be least when the load resistance is
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If a common emitter amplifier with an emitter resistance RC has an overall transconductance gain of 1 m A/V, a voltage gain of - 4 and desensitivity of 50, then the value of the emitter resistance R would be
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Turn on time of a transistor switch is equal to sum of (where tr is rise time, td is delay time)
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For the circuit shown in the figure, the capacitor C is initially uncharged. At t = 0, the switch S is closed. The voltage Vc across the capacitor at t = 1 millisecond is (In the figure shown above, the op-amp is supplied with ± 15 V and the ground has been shown by the symbol)
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In amplifiers, the parasitic oscillation result due to
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