Electronic Devices - Basic Op-Amp Circuits - Discussion
Discussion Forum : Basic Op-Amp Circuits - General Questions (Q.No. 6)
6.
Refer to the given figure. What is the output voltage?
Discussion:
13 comments Page 1 of 2.
Historia said:
5 years ago
Since it has no feed back then it's gain would be very high and the output signal would be clipped/saturated.
Tirupathi said:
7 years ago
Output of op-amp never crosses its supply voltage vcc. As the circuit is open loop. It has infinite open loop gain. i.e gain is infinite. Then output Vo=gain*Vi. Since it won't crosses vcc. It will be Saturated. Vcsat. Since in non inverting mode output and input has no phase so -Vcsat.
Renuga said:
8 years ago
If input voltage is greater than the reference voltage so what is the output voltage?
Bhuvana said:
8 years ago
Input voltage is less than reference voltage so the output voltage must be -vsat.
Rupesh said:
9 years ago
Non inverting comparator conditions:
When Vin>Vref = +Vsat,
When Vin<Vrff = -Vsat.
In problem -2<0 then answer is -Vsat.
When Vin>Vref = +Vsat,
When Vin<Vrff = -Vsat.
In problem -2<0 then answer is -Vsat.
Dhanpat sharna said:
10 years ago
Output between the -vsat/vsat then v inverting is zero vot lies +- sat.
Krishna said:
1 decade ago
Vout = A(V+ - V-).
V+ = Voltage at non inverting terminal.
V- = Voltage at non inverting terminal.
When V+>V-,Vout = +Vsat.
V+<V-,Vout = -Vsat.
V+ = Voltage at non inverting terminal.
V- = Voltage at non inverting terminal.
When V+>V-,Vout = +Vsat.
V+<V-,Vout = -Vsat.
Charu said:
1 decade ago
Is it necessary or not to give Vref? is this circuit behave like zero crossing detector?
Tanay said:
1 decade ago
Here -2V is applied to the noninverting terminal. Therefore the output must be -2V. So I think the answer is incorrect.
Mohanapriya.N said:
1 decade ago
The output is equal or greater than supply voltage it is called saturation. Here the output voltage is inverting output (negative). This is greater than supply (-2V). Hence this answer in correct.
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