How can you Frequency Compensate an OP AMP to yield a 45 degree Phase Margin while...
How can you Frequency Compensate an OP AMP to yield a 45 degree Phase Margin while maintaining the Highest Bandwith?
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How can you Frequency Compensate an OP AMP to yield a 45
degree Phase Margin while...
(a) Define offset voltage and explain why it exists in all Op-amp. How to compensate its...
(a) Define offset voltage and explain why it exists in all Op-amp. How to compensate its effect? (7)
Does an Op-Amp amplify current or voltage? 1. Can you use an Op-Amp as a buffer?...
Does an Op-Amp amplify current or voltage? 1. Can you use an Op-Amp as a buffer? If so, How? Why should you care about the device bandwidth rating? What is the most common Op Amp chip? 2. 3. 4. What is an 'active' component? Is an Op Amp an active or a passive component? What is the advantage of an active vs. passive filter? 5. 6.
Hi, Can someone please help me with the following question? I'm not sure how to do it.
Hi, Can someone please help me with the following question? I'm
not sure how to do it.
The open-loop gain of an internally compensated op amp can be approximated with a dominant pole frequency f1 and a single high-frequency pole ½ to account for the phase shift due to its higher-order roots. (a) Assuming ao 106 VV, f1-10 Hz, and B 1 VN, find the actuall bandwidth fe and phase margin фт, İff2-1 MHz. (b) Find for фт-60": what is...
Op-Amp Circuit Stability Although op-amps behave as single-pole amplifiers which are "uncondition...
Op-Amp Circuit Stability Although op-amps behave as single-pole amplifiers which are "unconditionally stable," it's still possible to make unstable amplifiers if you don't know what you're doing. The most famous example of this is the voltage differentiator 1. Consider the following circuit: a. Find the expression for this amplifier's ideal gain Aco (s), assuming the op-amp is ideal (a(s) - o. Hint: It's just an inverting amplifier with z and z2 R (5pts) b. Suppose the gain-setting components have values...
1. Consider the op-amp Circuit below 001uF 100Ω .1uF Vi Vo a. The Gain can be...
1. Consider the op-amp Circuit below 001uF 100Ω .1uF Vi Vo a. The Gain can be put in the form: what are the values for Ao, z1, 0z2, Op1, and ώρ27(Note that the resistors and capacitors of Zf and Zi are > order of magnitude apart. You can make approximations.) 0 Vi 1+ copi op2 b. Sketch a rough Bode plot (magnitude and Phase) Simulate the circuit using LTSPICE using an LT1001 op amp powered with+/-15V and plot the magnitude...
ELEC324/624 2018 Page 4 i) (2 marks) The open-loop frequency response of the LM748 op-amp is...
ELEC324/624 2018 Page 4 i) (2 marks) The open-loop frequency response of the LM748 op-amp is shown in the figure be for two different values of the external compensating capacitor, Ci.If provides unity-gain compensation, determine the capacitance the op-amp for a closed-loop gain of 3 dB. C-30 pF required to compensat Open Loop Frequency Response 120 100 80 40 20 -20 FREQUENCY(Hx) j) (2 marks) Describe how delay in the loop of any feedback control system can seriously compromise the...
Can you solve this exercise? I) 20pts Given the following circuit oscillator. Assume an ideal Op Amp. R1 Vo Cl Vf R2 C2...
Can you solve this exercise?
I) 20pts Given the following circuit oscillator. Assume an ideal Op Amp. R1 Vo Cl Vf R2 C2 R' I) a-What is the nature of this oscillator b- Identify on the circuit the amplifier circuit and the feedback circuit. 2) a- Express the gain of the amplifier A -Vo/Vf b- Express the feedback fraction B Vf/Vo -e-Find and draw the modulus and phase angle of B in terms of ω 3) a- Write the oscillation...
can you help me find the transfer function for a voltage to current converter op amp?...
can you help me find the transfer function for a
voltage to current converter op amp?
loltaye to Cureat Canverte 1.
You are asked to design a compensator to increase the phase margin to about 45degree without...
You are asked to design a compensator to increase the phase
margin to about 45degree without affecting the steady state
behavior and with the system bandwidth at least 4 rad/s. Would you
use a lag or lead compensator? Briefly explain.
R6 18-01-2018) as In the diagram, the block C(s) represents a compensator. The frequency response of the plant G(s) is shown below. Rode Data Magnitude (c) 40L 135 Phase (deg) .180 Frequency (rad/sec) (a) Suppose a compensator C(s) = 1...
Explain the given op-amp architecture by defining functional blocks and their specific roles. Detailed discussion on the operation principles as much as you can figure out will be examined.
Explain the given op-amp architecture by defining functional
blocks and their specific roles. Detailed discussion on the operation principles as
much as you can figure out will be examined.
(a) Define offset voltage and explain why it exists in all Op-amp. How to compensate its effect? (7)
Does an Op-Amp amplify current or voltage? 1. Can you use an Op-Amp as a buffer? If so, How? Why should you care about the device bandwidth rating? What is the most common Op Amp chip? 2. 3. 4. What is an 'active' component? Is an Op Amp an active or a passive component? What is the advantage of an active vs. passive filter? 5. 6.
Hi, Can someone please help me with the following question? I'm
not sure how to do it.
The open-loop gain of an internally compensated op amp can be approximated with a dominant pole frequency f1 and a single high-frequency pole ½ to account for the phase shift due to its higher-order roots. (a) Assuming ao 106 VV, f1-10 Hz, and B 1 VN, find the actuall bandwidth fe and phase margin фт, İff2-1 MHz. (b) Find for фт-60": what is...
Op-Amp Circuit Stability Although op-amps behave as single-pole amplifiers which are "unconditionally stable," it's still possible to make unstable amplifiers if you don't know what you're doing. The most famous example of this is the voltage differentiator 1. Consider the following circuit: a. Find the expression for this amplifier's ideal gain Aco (s), assuming the op-amp is ideal (a(s) - o. Hint: It's just an inverting amplifier with z and z2 R (5pts) b. Suppose the gain-setting components have values...
1. Consider the op-amp Circuit below 001uF 100Ω .1uF Vi Vo a. The Gain can be put in the form: what are the values for Ao, z1, 0z2, Op1, and ώρ27(Note that the resistors and capacitors of Zf and Zi are > order of magnitude apart. You can make approximations.) 0 Vi 1+ copi op2 b. Sketch a rough Bode plot (magnitude and Phase) Simulate the circuit using LTSPICE using an LT1001 op amp powered with+/-15V and plot the magnitude...
ELEC324/624 2018 Page 4 i) (2 marks) The open-loop frequency response of the LM748 op-amp is shown in the figure be for two different values of the external compensating capacitor, Ci.If provides unity-gain compensation, determine the capacitance the op-amp for a closed-loop gain of 3 dB. C-30 pF required to compensat Open Loop Frequency Response 120 100 80 40 20 -20 FREQUENCY(Hx) j) (2 marks) Describe how delay in the loop of any feedback control system can seriously compromise the...
Can you solve this exercise?
I) 20pts Given the following circuit oscillator. Assume an ideal Op Amp. R1 Vo Cl Vf R2 C2 R' I) a-What is the nature of this oscillator b- Identify on the circuit the amplifier circuit and the feedback circuit. 2) a- Express the gain of the amplifier A -Vo/Vf b- Express the feedback fraction B Vf/Vo -e-Find and draw the modulus and phase angle of B in terms of ω 3) a- Write the oscillation...
can you help me find the transfer function for a
voltage to current converter op amp?
loltaye to Cureat Canverte 1.
You are asked to design a compensator to increase the phase
margin to about 45degree without affecting the steady state
behavior and with the system bandwidth at least 4 rad/s. Would you
use a lag or lead compensator? Briefly explain.
R6 18-01-2018) as In the diagram, the block C(s) represents a compensator. The frequency response of the plant G(s) is shown below. Rode Data Magnitude (c) 40L 135 Phase (deg) .180 Frequency (rad/sec) (a) Suppose a compensator C(s) = 1...
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