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4.0k
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Sketch an op-amp integrating circuit together with the circuit waveforms. Explain in brief the circuit operation.
electronic circuits and communication updated 2.8 years ago by pedsangini276 • 4.8k
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887
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What is the frequency of station selected?
electronic circuits and communication updated 2.8 years ago by sagarkolekar ★ 11k
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Q1.(a) December 2015 of ECCF computer Engineering 3rd semester. B.E.
electronic circuits and communication updated 2.8 years ago by sagarkolekar ★ 11k
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Justify that JFET can be used as a Voltage Variable Resistor.
electronic circuits and communication updated 2.8 years ago by sagarkolekar ★ 11k
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1
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Justify that JFET can be used as a Voltage Variable Resistor
electronic circuits and communication updated 2.8 years ago by sagarkolekar ★ 11k
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33k
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Derive an expression for trans-conductance for JFET.
electronic circuits and communication updated 2.8 years ago by sagarkolekar ★ 11k
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14k
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What do you understand by "Pinch off" voltage and "cut off" voltage as applied to FET?
electronic circuits and communication updated 2.8 years ago by pedsangini276 • 4.8k
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17k
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Explain the different methods of biasing JFET along with their characteristics in detail.
electronic circuits and communication updated 2.8 years ago by pedsangini276 • 4.8k
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Give reasons for the following I. FET is called as a square law device II. Barkhausens criteria should be satisfied to get oscillations
electronic circuits and communication updated 2.8 years ago by pedsangini276 • 4.8k
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Draw and explain JFET characteristics. Also show that for a JFET $g_m=\dfrac{2}{|V_P|}\sqrt{I_{DSS}I_{DS}}$
electronic circuits and communication updated 2.8 years ago by pedsangini276 • 4.8k
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Determine the magnitude of $g_m$ for a JFET with $I_{DSS}$ - 8 mA and $V_p$= -4 V at the following dc bias points:1. $V_{GS}= -0.5 V$. 2. $V_{GS}= -I.5 V$. 3.$V_{GS}= -2.5 V$.
electronic circuits and communication updated 2.8 years ago by pedsangini276 • 4.8k
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Determine the magnitude of $g_m$ for a JFET with $I_{DSS}$ - 8 mA and $V_p$= -4 V at the following dc bias points:1. $V_{GS}= -0.5 V$. 2. $V_{GS}= -I.5 V$. 3.$V_{GS}= -2.5 V$.
electronic circuits and communication updated 2.8 years ago by pedsangini276 • 4.8k
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Compare n-channel and p-channel JFET with respect to their device features and voltage-current characteristics.
electronic circuits and communication updated 2.8 years ago by pedsangini276 • 4.8k
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With neat block diagram explain how PLL can be used to generate large number of frequencies from a single reference frequency.
electronic circuits and communication updated 2.8 years ago by pedsangini276 • 4.8k
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1.2k
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Determine the $V_{GSQ},I_{DQ}$ and $V_{DSQ}$ and $A_V$ for a voltage divider ciruit with $V_{DD}= 18v,R_D= 2.2K,R_1=2.1M,R_2=330K$ and $R_S=1.2 K,I_{DSS}=10mA,V_P=-8V$ and $I_FS=40\mu s$.
electronic circuits and communication updated 2.8 years ago by pedsangini276 • 4.8k
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Explain how Op-Amp can be used as a summing, scaling and averaging amplifier in the inverting configuration.
electronic circuits and communication updated 2.8 years ago by pedsangini276 • 4.8k
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Explain input offset voltage, CMRR and SVRR for operational amplifier.
electronic circuits and communication updated 2.8 years ago by pedsangini276 • 4.8k
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21k
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Explain ideal as well as practical differentiator in operational amplifier in detail.
electronic circuits and communication updated 2.8 years ago by pedsangini276 • 4.8k
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Calculate the maximum voltage gain for the voltage amplifier stage and determine the resistor values to obtain the desired gain.
electronic circuits and communication updated 2.8 years ago by pedsangini276 • 4.8k
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1.8k
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1
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Draw and explain opamp non inverting comparator. Draw input and output waveforms for Vref positive and also for Vref negative.
electronic circuits and communication updated 2.8 years ago by pedsangini276 • 4.8k
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12k
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Draw and explain opamp inverting comparator. Draw input and output waveforms for $V_{ref} > 0$ and also for $V_{ref} < 0$.
electronic circuits and communication updated 2.8 years ago by pedsangini276 • 4.8k
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4.7k
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Compare class A and class C power amplifiers.
electronic circuits and communication updated 2.8 years ago by pedsangini276 • 4.8k
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5.9k
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Find R1 and Rf in the lossy integrator so that the peak gain is 20 dB and the gain is 3 dB down from its peak when $\omega$ = 10,000 rad/s. Use capacitance of $0.01\mu F$.
electronic circuits and communication updated 2.8 years ago by pedsangini276 • 4.8k
0
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3.1k
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Explain how op-amp can be used as an averaging amplifier in inverting configuration.
electronic circuits and communication updated 2.8 years ago by pedsangini276 • 4.8k
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2.1k
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Explain how operational amplifier can be used for addition of two AC signals with one DC signal.
electronic circuits and communication updated 2.8 years ago by pedsangini276 • 4.8k
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