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Feedback in used in an op-amp to limit and control the gain. An op-amp, by itself, has very high gain, often more than 100,000. (A theoretical op-amp has infinite gain.) The external feedback loop forms a divider, more correctly a bridge, that is maintained in balance by the op-amp, giving the desired real gain.
What else can I help you with?
What feedback is used in amplifier?
there are four types of feedback connetion. the one used is that which amplifies your input (Positive feedback).
IC 741 is an?
It is an opamp chip consisting of 8 pins
What kind of feedback is used in emitter follower?
emitter follower is a type of negative feedback ,
What is negative feedback of a closed loop system?
Negative feedback is a feedback where it is used in negative side in a closed loop system.Such as a inverting side feedback in op-amp.
Why it is desirable for an op amp to have a high CMRR?
A high CMRR prevents the opamp from passing undesirable common mode signals.
What is feedback resistance and what is it's use?
Feedback resistance is used to feed back the current obtained at output back into the circuit. Thus a virtual ground concept is developed.this is majorly used in applications of OPAMP[IC 741].
Is opamp a linear device?
A: It should be that is the normal operating mode. To be linear it strongly depends on negative feedback to maintain it into that linear region. By itself without any feedback it is very unstable due to the hi gain open loop availability
Which of following OP amp is used to strengthen the week signal?
741 opamp
Why open loop configuration of opamp not used in linear applications?
Open loop means max amplification of an amplifier. if the open loop is very it will probably oscillate since there is not a feedback to control it or it will go to one rail of the other saturated
What are the two basic configurations in operational amplifier?
opamp is a device used to amplify ac as well as DC input signals. It is called as operational amp becoz it is used to perform all mathematical operations. Symbol of opamp indicates the direction of current.
Are the OP AMPS always linear?
not when they hit the power rail they aren't. or did you mean an opamp in a feedback circuit? the feedback circuit can give them a wide variety of transfer functions, some linear some nonlinear. nonlinear transfer functions include LOG, ANTILOG, GYRATION, SQRT, etc.
Similarity between opamp and comparator?
A comparator is simply an opamp with a certain configuation of external circuitry ( a few components) that make it function as a comparator.
What feedback is used in amplifier?
there are four types of feedback connetion. the one used is that which amplifies your input (Positive feedback).
Is IC741 a hybrid ic?
no, the 741 opamp is a monolithic IC.
IC 741 is an?
It is an opamp chip consisting of 8 pins
Why voltage gain is high in op amp?
A practical opamp is designed to approach the characteristics of the ideal opamp as closely as possible. The open loop voltage gain of an ideal opamp is infinite, so while this is actually impossible to achieve practical opamps are built with as high an open loop voltage gain as possible.
Which kind of feedback is used to reinforce correct behavior?
constructive feedback
