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Recent questions tagged opamps
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1
GATE2020EC: 18
In the circuit shown below, all the components are ideal. If $V_{i}$ is $+2\:V$, the current $I_{o}$ sourced by the opamp is __________ $\text{mA}$.
asked
Feb 13
in
Analog Circuits
by
jothee
(
1.4k
points)
gate2020ec
numericalanswers
opamps
analogcircuits
0
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0
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2
GATE2016241
An opamp has a finite open loop voltage gain of $100$. Its input offset voltage $V_{ios}(=+5mV)$ is modeled as shown in the circuit below. The amplifier is ideal in all other respects. $V_{\text{input}}$ is $25 \: mV$. The output voltage (in millivolts) is _________
asked
Mar 28, 2018
in
Analog Circuits
by
Milicevic3306
(
15.8k
points)
gate2016ec2
numericalanswers
analogcircuits
opamps
0
votes
0
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3
GATE2016114
The following signal $V_i$ of peak voltage $8 \: V$ is applied to the noninverting terminal of an ideal Opamp.The transistor has $V_{EE}=0.7 \: V$, $\beta=100; \: V_{LED}=1.5 \: V$, $V_{CC}=10 \: V$ and $ – V_{CC}= – 10 \:V$. The number of times the LED glows is ________
asked
Mar 28, 2018
in
Analog Circuits
by
Milicevic3306
(
15.8k
points)
gate2016ec1
numericalanswers
analogcircuits
opamps
0
votes
0
answers
4
GATE2016140
An ideal opamp has voltage sources $V_1, V_3, V_5, \dots, V_{N1}$ connected to the noninverting input and $V_2, V_4, V_6, \dots, V_N$ connected to the inverting input as shown in the figure below $(+V_{CC}= 15$ volt, $  V_{CC} =  15$ ... $N$ approaches infinity, the output voltage (in volt) is _________
asked
Mar 28, 2018
in
Analog Circuits
by
Milicevic3306
(
15.8k
points)
gate2016ec1
numericalanswers
analogcircuits
opamps
0
votes
0
answers
5
GATE2015312
In the circuit shown using an ideal opamp, the $3$dB cutoff frequency (in Hz) is _______.
asked
Mar 28, 2018
in
Analog Circuits
by
Milicevic3306
(
15.8k
points)
gate2015ec3
numericalanswers
analogcircuits
opamps
0
votes
0
answers
6
GATE2015339
In the circuit shown, assume that the opamp is ideal. If the gain $(v_{0} / v_{in})$ is $–12,$ the value of $R\: (\text{in}\: k\Omega)$ is _____.
asked
Mar 28, 2018
in
Analog Circuits
by
Milicevic3306
(
15.8k
points)
gate2015ec3
analogcircuits
opamps
0
votes
0
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7
GATE2015212
In the circuit shown, $V_{0} = V_{0A}$ for switch $SW$ in position $A$ and $V_{0} = V_{0B}$ for $SW$ in position $B$. Assume that the opamp is ideal. The value of $\dfrac{V_{0B}}{V_{0A}}$ is ___________.
asked
Mar 28, 2018
in
Analog Circuits
by
Milicevic3306
(
15.8k
points)
gate2015ec2
numericalanswers
analogcircuits
opamps
0
votes
0
answers
8
GATE2015213
In the bistable circuit shown, the ideal opamp has saturation levels of $\pm\: 5\: V.$ The value of $R_{1} \text{(in}\: k\Omega)$ that gives a hysteresis width of $500\: mV$ is ________.
asked
Mar 28, 2018
in
Analog Circuits
by
Milicevic3306
(
15.8k
points)
gate2015ec2
numericalanswers
analogcircuits
opamps
0
votes
0
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9
GATE2015240
Assuming that the opamp in the circuit shown below is ideal, the output voltage ܸ$V_{o}$ (in volts) is________.
asked
Mar 28, 2018
in
Analog Circuits
by
Milicevic3306
(
15.8k
points)
gate2015ec2
numericalanswers
analogcircuits
opamps
0
votes
0
answers
10
GATE2015241
For the voltage regulator circuit shown, the input voltage $(V_{in})$ is $20 V \pm 20\%$ and the regulated output voltage $(V_{out})$ is $10\: V.$ Assume the opamp to be ideal. For a load $R_L$ drawing $200\: mA,$ the maximum power dissipation in $Q_{1}\:\text{(in Watts)}$ is ________.
asked
Mar 28, 2018
in
Analog Circuits
by
Milicevic3306
(
15.8k
points)
gate2015ec2
numericalanswers
analogcircuits
opamps
0
votes
0
answers
11
GATE2015140
In the circuit shown, assume that the opamp is ideal. The bridge output voltage $V_0$ (in mV) for $\delta=0.05$ is __________
asked
Mar 28, 2018
in
Analog Circuits
by
Milicevic3306
(
15.8k
points)
gate2015ec1
numericalanswers
analogcircuits
opamps
0
votes
0
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12
GATE2015141
The circuit shown in the figure has an ideal opamp. The oscillation frequency and the condition to sustain the oscillations, respectively, are $\frac{1}{CR}$ and $R_1=R_2 \\ $ $\frac{1}{CR}$ and $R_1=4R_2 \\ $ $\frac{1}{2CR}$ and $R_1=R_2 \\ $ $\frac{1}{2CR}$ and $R_1=4R_2 $
asked
Mar 28, 2018
in
Analog Circuits
by
Milicevic3306
(
15.8k
points)
gate2015ec1
analogcircuits
opamps
0
votes
0
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13
GATE2014338
Assuming that the Opamp in the circuit shown is ideal, $V_{o}$ is given by $\frac{5}{2}V_{1}3V_{2} \\$ $2V_{1}\frac{5}{2}V_{2} \\$ $\frac{3}{2}V_{1}+\frac{7}{2}V_{2} \\$ $3V_{1}+\frac{11}{2}V_{2}$
asked
Mar 26, 2018
in
Analog Circuits
by
Milicevic3306
(
15.8k
points)
gate2014ec3
analogcircuits
opamps
0
votes
0
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14
GATE2014137
In the voltage regulator circuit shown in the figure, the opamp is ideal. The BJT has $V_{BE} = 0.7\:V$ and $\beta = 100,$ and the zener voltage is $4.7\:V.$ For a regulated output of $9\:V,$ the value of $R$ (in $\Omega)$ is ______.
asked
Mar 26, 2018
in
Analog Circuits
by
Milicevic3306
(
15.8k
points)
gate2014ec1
numericalanswers
analogcircuits
opamps
bipolarjunctiontransistor
0
votes
0
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15
GATE2014138
In the circuit shown the opamp has finite input impedance, infinite voltage gain, and zero input offset voltage. The output voltage $V_{out}$ is $I_{2}(R_{1} + R_{2})$ $I_{2}R_{2}$ $I_{1}R_{2}$ $I_{1}(R_{1} + R_{2})$
asked
Mar 26, 2018
in
Analog Circuits
by
Milicevic3306
(
15.8k
points)
gate2014ec1
opamps
analogcircuits
electronicdevices
0
votes
0
answers
16
GATE201838
An opamp based circuit is implemented as shown below. In the above circuit, assume the opamp to be ideal. The voltage (in volts, correct to one decimal place) at node $A$, connected to the negative input of the opamp as indicated in the figure is ________.
asked
Feb 19, 2018
in
Analog Circuits
by
gatecse
(
1.4k
points)
gate2018ec
numericalanswers
analogcircuits
opamps
0
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0
answers
17
GATE2017 EC2: 42
In the voltage reference circuit shown in the figure, the opamp is ideal and the transistors $Q_1, Q_2, \dots ,Q_{32}$ are identical in all respects and have infinitely large values of commonemitter current gain $(\beta)$. The collector current $(Ic)$ of the ... figure is $0.7$ V and the thermal voltage $V_T = 26$ mV. The output voltage $V_{out}$ (in volts) is ______________
asked
Nov 25, 2017
in
Analog Circuits
by
admin
(
2.8k
points)
gate2017ec2
opamps
numericalanswers
analogcircuits
0
votes
0
answers
18
GATE2017 EC1: 42
The amplifier circuit shown in the figure is implemented using a compensated operational amplifier (opamp), and has an openloop voltage gain, $A_{0}=10^{5}V/V$ and an openloop cutoff frequency, $f_{c}=8Hz$. The voltage gain of the amplifier at $15$ kHz, in V/V, is____________.
asked
Nov 17, 2017
in
Analog Circuits
by
admin
(
2.8k
points)
gate2017ec1
numericalanswers
analogcircuits
opamps
0
votes
0
answers
19
GATE2017 EC1: 12
For the operational amplifier circuit shown, the output saturation voltage are $\pm 15 \:V$. The upper and lower threshold voltages for the circuit are,respectively, $+ 5 \: V$ and $– 5 V$ $+ 7 \: V$ and $– 3 \: V$ $+ 3 \: V$ and $ 7 \: V$ $+ 3 \: V$ and $– 3 \: V$
asked
Nov 17, 2017
in
Analog Circuits
by
admin
(
2.8k
points)
gate2017ec1
opamps
amplifier
analogcircuits
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