What is a key difference between negative and positive feedback mechanisms?
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- what are the advantages of root locus? need of feedback ?a. What is the value of Vout? b. What is the voltage gain? c. If the input is connected to the non-inverting input along with the feedback, what now is the value of the output voltage? d. If the input is connected to the non-inverting input along with the feedback, what now is the value of the output voltage? e. If greater voltage gain is a requirement, which set-up is a better choice?Assume an inverting amplifier with input resistance 1 kilohm and feedback resistance of 100 kilohm. If the op-amp has GBP = 1 MHz, what is the closed loop amplifier bandwidth?
- Given the four statements below, which of the following statements are true about op- amp with negative feedback arrangement? i. Negative feedback drive the op-amp to saturation with Vo =+Vsat. 1i. Negative feedback reduces the gain of the op-amp circuit to desired valuc. iii. Negative feedback controls the frequency response of the op-amp cireuit. iv. Negative feedback maintains the oscillations. O, ii, i Oi, ii, ivin control , what are the effect of changing the gain (K) on the transient response.For the given four statements below, which of the following are not correct about an op-amp with negative feedback arrangement? i. Negative feedback reduces the gain of the op-amp circuit to desired value. ii. Negative feedback takes portion of the output and applies it back in-phase with the input. iii. Negative feedback controls the voltage transfer characteristic of the op-amp circuit. iv. Negative feedback maintains the oscillations. i and ii O i and iv iii and iv O i and iii
- Suppose that we are designing an amplifier, using an op amp. What problems are associated with using very small feedback resistances? With very large feedback resistances?A negative feedback closed loop system gain, y(t) /r(t) ), of at least 7.5 is needed with a ß = 0.1. a. What is the minimum value of the forward gain, 4, that will allow this? b. What is the loop gain for this system?A What does negative feedback mean? Explain the effect of negative feedback on amplifier circuits? gain and bandwidth of
- Plz solve all parts , i vll upvote and share positive feedback ...Asap plzzz3D Problem 1. (P1) Three op-amps are connected in cascade configuration. An 80 microVolts signal is connected to the non-inverting input of the first op-amp. Both the 2nd and 3rd op-amps operates as inverting amplifiers. All feedback resistors are 420 KOhms while the input resistances are 71.4kOhms, 19.1kOhms, and 14KOhms respectively. Determine the output of the third stage stage. a.9 V b.9000 mV c.79.2 V d.792 mVA negative voltage feedback amplifier has voltage gain without feedback, A, = 1000 and feedback fraction m, = 0.01. If the lower cutt-off frequency f₁ = 1.5 kHz and upper cut-off frequency ₂ = 501.5 kHz before feedback, what is the value of lower cutt- off frequency after negative feedback?