For various reasons, we might want to put two op-amps in series as shown below. a)...
For various reasons, we might want to put two op-amps in series as shown below.
a) What is the gain A=Vout/Vin of the whole circuit?
b) What is the output voltage when the input voltage is 10mV?
c) What is the output voltage when the input voltage is 1V?
Homework Answers
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For various reasons, we might want to put two op-amps in series
as shown below.
a)...
5. Op amps can enhance the performance of diode circuits (assume that the op-amps are ideal.)....
5. Op amps can enhance the performance of diode circuits (assume that the op-amps are ideal.). a) (Ipts) An input signal with Vpp =10V and frequency =500Hz is injected into the following circuit given. Determine the output voltage. reset En b) (2pts) When the capacitor is replaced with al0k resistor, draw the output signal (Don't forget to indicate your various scale.). c) (2pts) A diode junction acts as a photodetector: Light creates electron-hole pairs, and therefore a current through the...
A MOSFET is wired as a common-source amplifier as shown below. The input voltage vIN is...
A MOSFET is wired as a common-source amplifier as shown below.
The input voltage vIN is the total of the source for
biasing the circuit at its operating point (vBIAS), and
a small signal ac source providing the signal that we want to
amplify (vin). The total output voltage is
vO.
a) Assume VDD = 5?, VIN = 2?, and ? = 4?Ω
in the circuit and the MOSFET parameters are K =
0.5??/?2, VTH 1?, and ? = 0.05V-1....
Problem 7 (CLO 3, 4, 11 - Ideal Op-Amps, Design): We will now design an Op-Amp...
Problem 7 (CLO 3, 4, 11 - Ideal Op-Amps, Design): We will now design an Op-Amp circuit to perform the function where v1 - input voltage 1, input voltage 2, = input voltage 3, Vo = output voltage. It may be helpful to consult your recitation 6 (week 7) results as well as Table 4-3 for this problem. 7.a: Select an Op-Amp configuration for your design. Sketch the Op-Amp configuration with symbolic resistors (Rf, Ri, R2, etc) indicated. Do not...
To obtain the difference between two different inputs, we can connect them to the positive and...
To obtain the difference between two different inputs, we can connect them to the positive and negative pins of the Opamp. R1 7 +15V - opamp Ra AL15V Vout = 2 (U2-01) Where, R=R3 R2RA Figure 6: The difference amplifier The voltage follower is a non-inverting amplifier configuration with a gain of unity. Its output basically “follows” its input. The voltage follower's main virtue is that it has a very high input resistance. This is useful for driving a low...
Inverting Amplifier Figure 4.2 shows the fundamental configuration of Op-Amp in which it is used as...
Inverting Amplifier Figure 4.2 shows the fundamental configuration of Op-Amp in which it is used as an inverting amplifier. In this configuration the ratio, R2/R1 completely controls the effective gain of the amplifier and it can be verified that the output voltage is equal to Vo = - (R2/R1)Vin R2 100K Q-10V R1 Vinow 20K 1 2 7 V Vo 3 -10v Figure 4.2 Part 1 - Inverting Amp: Procedure 1. Construct the circuit of figure 4.2 using Op-Amp IC...
1. For the 4 circuits shown below, sketch the output waveform for a 1V peak, 1kHz,...
1. For the 4 circuits shown below, sketch the output waveform for a 1V peak, 1kHz, sinusoidal wave in put signal. Assume the diodes are ideal and they exhibit ON-OFF switch model behaviour. Create an ideal diode model in LT-Spice with the following specification [.model IdealDiode D(Ron=0.1m Roff=100G Vfwd-0.0) ] simulate the circuit and verify the output waveform. Vin Vout Vin Vout 1k 1k (a) (b) 1k Vin 1k Vin Vout Vout ww 1k (c) (d) KH
1. For the...
Question 3 3 pts Focus on Op-amp U1 (Both op-amps have to be completely connected as...
Question 3 3 pts Focus on Op-amp U1 (Both op-amps have to be completely connected as shown in Figure A) Use myDAQ's oscilloscope to capture the input waveform Vin (on Channel 0) and the intermediate output waveform Vout1 (on Channel 1) superimposed. Set the amplitude scale for both channels of the oscilloscope to 500 mV/Div Set the time scale of the oscilloscope to 200 us/Div 1. Take a screenshot of the oscilloscope (both waveform in the same picture) and embed...
4. For the circuit below, given that the resistor is I ΚΩ , the diode has...
4. For the circuit below, given that the resistor is I ΚΩ , the diode has a current vs. voltage function as shown, and n 2 V, A. What is the voltage at the negative ()input of the op amp? B. What will the current be through the diode (from Vin to the negative input of the op C. Sketch the function of Vout Vs. Vin for positivei D. What will the current be through the resistor (from Vin to...
Problem 3 The circuit shown is made of an op-amp and two resistors, R1 and R2,...
Problem 3 The circuit shown is made of an op-amp and two resistors, R1 and R2, with positive feedback, i.e. it is acting as a Schmitt trigger. An RC combination is attached so that the capacitor is charged via Vout and R. The op-amp is powered with #12V. Vout R13 a) Qualitatively discuss what this circuit is doing and what form the +12V -12V output voltage has. It might help if you think of the Schmitt trigger as a mechanical...
A. (10 pts) Implement the voltage amplifier shown below using an ideal op amp circuit. You have o...
a. (10 pts) Implement the voltage amplifier shown below using an ideal op amp circuit. You have one op amp available for this circuit, and a range of resistors with values from 1 kΩ to 100 ka. Draw the schematic of your op amp circuit, labeling resistor values. Make sure the gain, input resistance, and output resistance of your circuit matches the model in the schematic. R=012 *100v, RL 100 b. (5 pts) Your amplifier circuit should have a frequency...
5. Op amps can enhance the performance of diode circuits (assume that the op-amps are ideal.). a) (Ipts) An input signal with Vpp =10V and frequency =500Hz is injected into the following circuit given. Determine the output voltage. reset En b) (2pts) When the capacitor is replaced with al0k resistor, draw the output signal (Don't forget to indicate your various scale.). c) (2pts) A diode junction acts as a photodetector: Light creates electron-hole pairs, and therefore a current through the...
A MOSFET is wired as a common-source amplifier as shown below.
The input voltage vIN is the total of the source for
biasing the circuit at its operating point (vBIAS), and
a small signal ac source providing the signal that we want to
amplify (vin). The total output voltage is
vO.
a) Assume VDD = 5?, VIN = 2?, and ? = 4?Ω
in the circuit and the MOSFET parameters are K =
0.5??/?2, VTH 1?, and ? = 0.05V-1....
Problem 7 (CLO 3, 4, 11 - Ideal Op-Amps, Design): We will now design an Op-Amp circuit to perform the function where v1 - input voltage 1, input voltage 2, = input voltage 3, Vo = output voltage. It may be helpful to consult your recitation 6 (week 7) results as well as Table 4-3 for this problem. 7.a: Select an Op-Amp configuration for your design. Sketch the Op-Amp configuration with symbolic resistors (Rf, Ri, R2, etc) indicated. Do not...
To obtain the difference between two different inputs, we can connect them to the positive and negative pins of the Opamp. R1 7 +15V - opamp Ra AL15V Vout = 2 (U2-01) Where, R=R3 R2RA Figure 6: The difference amplifier The voltage follower is a non-inverting amplifier configuration with a gain of unity. Its output basically “follows” its input. The voltage follower's main virtue is that it has a very high input resistance. This is useful for driving a low...
Inverting Amplifier Figure 4.2 shows the fundamental configuration of Op-Amp in which it is used as an inverting amplifier. In this configuration the ratio, R2/R1 completely controls the effective gain of the amplifier and it can be verified that the output voltage is equal to Vo = - (R2/R1)Vin R2 100K Q-10V R1 Vinow 20K 1 2 7 V Vo 3 -10v Figure 4.2 Part 1 - Inverting Amp: Procedure 1. Construct the circuit of figure 4.2 using Op-Amp IC...
1. For the 4 circuits shown below, sketch the output waveform for a 1V peak, 1kHz, sinusoidal wave in put signal. Assume the diodes are ideal and they exhibit ON-OFF switch model behaviour. Create an ideal diode model in LT-Spice with the following specification [.model IdealDiode D(Ron=0.1m Roff=100G Vfwd-0.0) ] simulate the circuit and verify the output waveform. Vin Vout Vin Vout 1k 1k (a) (b) 1k Vin 1k Vin Vout Vout ww 1k (c) (d) KH
1. For the...
Question 3 3 pts Focus on Op-amp U1 (Both op-amps have to be completely connected as shown in Figure A) Use myDAQ's oscilloscope to capture the input waveform Vin (on Channel 0) and the intermediate output waveform Vout1 (on Channel 1) superimposed. Set the amplitude scale for both channels of the oscilloscope to 500 mV/Div Set the time scale of the oscilloscope to 200 us/Div 1. Take a screenshot of the oscilloscope (both waveform in the same picture) and embed...
4. For the circuit below, given that the resistor is I ΚΩ , the diode has a current vs. voltage function as shown, and n 2 V, A. What is the voltage at the negative ()input of the op amp? B. What will the current be through the diode (from Vin to the negative input of the op C. Sketch the function of Vout Vs. Vin for positivei D. What will the current be through the resistor (from Vin to...
Problem 3 The circuit shown is made of an op-amp and two resistors, R1 and R2, with positive feedback, i.e. it is acting as a Schmitt trigger. An RC combination is attached so that the capacitor is charged via Vout and R. The op-amp is powered with #12V. Vout R13 a) Qualitatively discuss what this circuit is doing and what form the +12V -12V output voltage has. It might help if you think of the Schmitt trigger as a mechanical...
a. (10 pts) Implement the voltage amplifier shown below using an ideal op amp circuit. You have one op amp available for this circuit, and a range of resistors with values from 1 kΩ to 100 ka. Draw the schematic of your op amp circuit, labeling resistor values. Make sure the gain, input resistance, and output resistance of your circuit matches the model in the schematic. R=012 *100v, RL 100 b. (5 pts) Your amplifier circuit should have a frequency...
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