Assume the op-amp below is used as a comparator circuit and that
the op-amp is powered by a bipolar
+/- 15 V power supply. If the reference voltage Vref = -9 V and the
input voltage is VI = 12 V,
determine the output voltage, VO, of the op-amp. Assume the
open-loop gain, A, is very large and
consider saturation effects. Include units in your answer.
Since the op-amp acts as a comparator as there is no feedback connection. Output will be either (+Vcc or -Vee) depending on the input.
If input at positive terminal is greater than input at negative terminal, output will be +Vcc else -Vee.
Here input at negative terminal= 12v
at positive terminal = -9v
Since voltage at negative terminal is higher
Output Vo = -15v
Assume the op-amp below is used as a comparator circuit and that the op-amp is powered...
Need part 2. 3. In following circuit, (1) Assume the Op Amp is ideal, Ri= 10 k 2, R2 = 20 k 2, R;= 10 k 2 and R = 30 k12, find the voltage gain Vo/Vi and input resistance R. (8 pts) (2) Assume the Op Amp is not ideal, and the open-loop gain is As, R = 10 k 2, R2 = 20 k 2, R;= 10 ks2 and Ri= 30 ks2, find the voltage gain Vo/Vi and...
ECE 202- Experiment 3-PreLab Homework NTROD TION TOTHE INTEG IRO T OP AMP VOLTAGE COMPARATOR 1. Op Amp functions in two different modes, depending on the way it is connected in the circuit a) If there is no return loop, t is used to compare values of two input terminals (or as Explain how vo changes depending on the values of vi and v Vo . what are max and/or min values for v and vo? 2·The circuit shown below...
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Problem 2: In the circuit shown assume the Op-Amp is ideal. A) Find vo as a function of vi and vs. B) Next assume the Op-Amp is ideal, except its low frequency gain is Ao= 100 V/V. Now find vo as a function of vi and v2. C) The Op-Amp has a terminal frequency of fi 10° Hz, find the -3 dB (corner) frequency of the output signal w2 10K
1. Use supply voltage +/- 15V and design a comparator op-amp circuit where the output becomes maximum positive when the input is higher then 5V. 2. Sketch the output voltage relative to the input voltage of the circuit. 3. How can we get maximum negative output voltage when the input voltage is bigger then 5V?
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