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View All : Main > Topics > DC Circuits > Operational Amplifiers
Category: Inverting/
diagram_thumbnail Problem 2

In this problem, we’ll assume that both operational amplifiers are ideal. We want to determine the output voltage VO.

DC Circuits > Operational Amplifiers > Inverting
Keywords:
  • two stage,
  • operational amplifier,
  • feedback resistor,
  • voltage gain,
  • Av
,
  • Ideal opamp model
,
  • algebra
Length: 5:40    Date Added: 2007-05-23 20:24:04    Filename: opAmp_inv_ex2    ID: 16
diagram_thumbnail Problem 1

In this problem, we assume the operational amplifier is ideal, we are interested in the voltage across the 1kΩ resistor.

DC Circuits > Operational Amplifiers > Inverting
Keywords:
  • single stage,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 5:39    Date Added: 2006-08-29 13:31:16    Filename: opAmp_inv_ex1    ID: 30
diagram_thumbnail Problem 3

Determine the output current io when v1 = 1V and v2 = 1 V

DC Circuits > Operational Amplifiers > Inverting
Keywords:
  • inverting,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 7:48    Date Added: 2007-05-23 20:24:04    Filename: opAmp_inv_ex3    ID: 179
Category: Combination/
diagram_thumbnail Problem 1

We are trying to find the output voltage vo of the ideal op amp circuit.

DC Circuits > Operational Amplifiers > Combination
Keywords:
  • multiple stage,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 6:30    Date Added: 2007-05-23 20:24:04    Filename: opAmp_combo_ex1    ID: 17
diagram_thumbnail Problem 2

Calculate the current through the 20kΩ resistor.

DC Circuits > Operational Amplifiers > Combination
Keywords:
  • multiple stage,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 5:00    Date Added: 2007-05-23 20:24:04    Filename: opAmp_combo_ex2    ID: 108
diagram_thumbnail Problem 3

Determine the current i in the op amp circuit.

DC Circuits > Operational Amplifiers > Combination
Keywords:
  • single stage,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 5:40    Date Added: 2007-05-23 20:24:04    Filename: opAmp_combo_ex3    ID: 140
diagram_thumbnail Problem 4

find the output voltage vo of the ideal op amp.

DC Circuits > Operational Amplifiers > Combination
Keywords:
  • single stage,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 6:03    Date Added: 2007-05-23 20:24:04    Filename: opAmp_combo_ex4    ID: 166
diagram_thumbnail Problem 5

Find the output voltage vo of the ideal op amp.

DC Circuits > Operational Amplifiers > Combination
Keywords:
  • single stage,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 7:54    Date Added: 2007-05-23 20:24:04    Filename: opAmp_combo_ex5    ID: 167
diagram_thumbnail Problem 6

For the circuit which consists of one ideal op amp, we want to find the output voltage vo of the op amp.

DC Circuits > Operational Amplifiers > Combination
Keywords:
  • single stage,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 5:25    Date Added: 2007-05-23 20:24:04    Filename: opAmp_combo_ex6    ID: 170
Category: Design/
Problem 1

Design an op amp circuit such that vout = -3v1 - 5v2 + 4v3.

DC Circuits > Operational Amplifiers > Design
Keywords:
  • single stage,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 6:38    Date Added: 2007-05-23 20:24:04    Filename: opAmp_design_ex1    ID: 171
Category: Modeling/
diagram_thumbnail Problem 1

An inverting amplifier circuit is given in figure 1.

a) Assume the op amp is ideal and determine vo .

b) Replace the operational amplifier by the finite gain model shown in figure 2. Assuming the parameters of the op amp are Ri = 100kΩ, Ro = 100kΩ, and A = 100,000, repeat the analysis and find vo.

DC Circuits > Operational Amplifiers > Modeling
Keywords:
  • single stage,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 8:51    Date Added: 2007-05-23 20:24:04    Filename: opAmp_model_ex1    ID: 172
diagram_thumbnail Problem 2

An non-inverting amplifier circuit is given in figure 1.

a) If the load resistor RL = 1kΩ, determine vo assuming the op amp is ideal. Repeat the analysis for RL = 100kΩ.

b) Replace the operational amplifier by the finite gain model shown in figure 2. Assume the parameters of the op amp are Ri = 100kΩ, Ro = 100kΩ, and A = 100,000. Repeat the analysis of a).

DC Circuits > Operational Amplifiers > Modeling
Keywords:
  • single stage,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 8:40    Date Added: 2007-05-23 20:24:04    Filename: opAmp_model_ex2    ID: 173
Category: Summing/
diagram_thumbnail Problem 2

Find the output voltage vo

DC Circuits > Operational Amplifiers > Summing
Keywords:
  • summing,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 5:36    Date Added: 2007-05-23 20:24:04    Filename: opAmp_sum_ex2    ID: 180
diagram_thumbnail Problem 1

Find the output voltage vo

DC Circuits > Operational Amplifiers > Summing
Keywords:
  • summing,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 5:57    Date Added: 2007-05-23 20:24:04    Filename: opAmp_sum_ex1    ID: 207
Category: Noninverting/
diagram_thumbnail Problem 1

Find the current through the 6kΩ resistor.

DC Circuits > Operational Amplifiers > Noninverting
Keywords:
  • noninverting,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 5:06    Date Added: 2007-05-23 20:24:04    Filename: opAmp_nonInv_ex1    ID: 213
diagram_thumbnail Problem 2

Calculate the output voltage vo

DC Circuits > Operational Amplifiers > Noninverting
Keywords:
  • noninverting,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 4:37    Date Added: 2007-05-23 20:24:04    Filename: opAmp_nonInv_ex2    ID: 214
Category: Difference/
diagram_thumbnail Problem 1

Find the output voltage vo

DC Circuits > Operational Amplifiers > Difference
Keywords:
  • difference,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 7:51    Date Added: 2007-05-23 20:24:04    Filename: opAmp_diff_ex1    ID: 215
Category: Instrumentation/
diagram_thumbnail Problem 1

a) Determine the output voltage of the instrumentation amplifier when v1 = 0V and v2 = 0.1V b) Assume the input signal is distorted by noise and the input voltage becomes v1 = 10V and v2 = 10.1V Recalculate the output voltage.

DC Circuits > Operational Amplifiers > Instrumentation
Keywords:
  • Instrumentation,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 6:41    Date Added: 2007-05-23 20:24:04    Filename: opAmp_instrument_ex1    ID: 216
Category: Cascade/
diagram_thumbnail Problem 1

Find the output voltage vo

DC Circuits > Operational Amplifiers > Cascade
Keywords:
  • Cascade,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 8:11    Date Added: 2007-05-23 20:24:04    Filename: opAmp_cascade_ex1    ID: 217
diagram_thumbnail Problem 2

Find the output voltage vo

DC Circuits > Operational Amplifiers > Cascade
Keywords:
  • Cascade,
  • operational amplifier
,
  • Ideal opamp model
,
  • algebra
Length: 10:08    Date Added: 2007-05-23 20:24:04    Filename: opAmp_cascade_ex2    ID: 250