Electronics - Operational Amplifiers - Discussion
Discussion Forum : Operational Amplifiers - General Questions (Q.No. 31)
31.
In an open-loop op-amp circuit, whenever the inverting input (–) is negative relative to the noninverting input (+), the output will:
Discussion:
9 comments Page 1 of 1.
Dhiraj said:
4 years ago
1. If Non-inverting terminal Voltage is Greater than Inverting terminal voltage then the output will be positive or Swing positive.
2. If the Non-inverting terminal is less than the inverting terminal then the output will be negative or swing negative.
So, case 1 satisfy the given question so answer D is right.
2. If the Non-inverting terminal is less than the inverting terminal then the output will be negative or swing negative.
So, case 1 satisfy the given question so answer D is right.
Xyz said:
6 years ago
Swing positive because opam have positive and negative both 15V biased voltage.
Inverting input is negatve so Vout = -vin (-Rf/r1).
Inverting input is negatve so Vout = -vin (-Rf/r1).
Anomie. said:
6 years ago
Open loop means NO feedback resistor Rf in the opam circuit.
(not feeding output to the input in circuit).
Close loop means feedback resistor used Rf in the opam circuit.
(used output as feedback to as an input in circuit).
(not feeding output to the input in circuit).
Close loop means feedback resistor used Rf in the opam circuit.
(used output as feedback to as an input in circuit).
Hani said:
7 years ago
When our v+ voltage greater then our + cycle more amplify compare to (_) cycle.
Here is the saturation v_ is negative mean less then v+ so our positive cycle will more amplify and swing positive.
Here is the saturation v_ is negative mean less then v+ so our positive cycle will more amplify and swing positive.
Sharmila said:
7 years ago
@Irtaza shah.
Please explain with more details.
Please explain with more details.
Shadan said:
8 years ago
1. If Non-inverting terminal Voltage is Greater than Inverting terminal voltage then the output will be positive or Swing positive.
2. If Non-inverting terminal is less the inverting terminal then the output will be negative or swing negative.
So case 1 satisfy the given question so answer D is right.
2. If Non-inverting terminal is less the inverting terminal then the output will be negative or swing negative.
So case 1 satisfy the given question so answer D is right.
Vishnu said:
8 years ago
Anyone explain me open loop and closed loop concept in opamp.
Irtaza shah said:
1 decade ago
Above question is related to comparator, so as you know comparator gives the output which is the greater one in inputs. From question, whenever the inverting input (-) is negative (ie less than or smaller) relative to the noninverting input (+) , the output will swing positive.
Maheswar reddy said:
1 decade ago
Any one please tell me answer.
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