1. What influence does negative feedback have on the stability and freedom from interference of an amplifier? 2. What influence does negative feedback have on the linearity of the amplifier characteristic? 3. What influence does negative feedback have on the gain factor? 4. What influence does negative feedback have on the upper cut-off frequency? 5. What influence does negative feedback have on the input resistance?

1. What influence does negative feedback have on the stability and freedom from interference of an amplifier? 2. What influence does negative feedback have on the linearity of the amplifier characteristic? 3. What influence does negative feedback have on the gain factor? 4. What influence does negative feedback have on the upper cut-off frequency? 5. What influence does negative feedback have on the input resistance?

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter12: Power System Controls

Section: Chapter Questions

Problem 12.3P

See similar textbooks

Similar questions

An amplifier without feedback gives an output of 50V into 6% second harmonic distortion when the input is 0.2V. If the negative feedback is applied to amplifier so that the second harmonic distortion is reduced to 1%. a) What value of feedback ratio must be used? b) What input voltage will be required to produce the same output voltage of 50V?
Assume that the R2/R1 ratio of a feedback amplifier with voltage supply of +/- 10 V is 3.4 and that a value of 8.5 V is applied to the inverting input of the op-amp. What is the output voltage value?
6. For common-source small-signal FETS, the output voltage is 180° phase shifted with respect to the Q 7. The operating cycle of a Class A amplifier is Q 8. The maximum efficiency of a Class B amplifier is Q 9. In analyzing op-amps, when the non-inverting input pin is at ground and the inverting input pin is also at 0 V for an AC signal, the technique is called as Q 10. is an op-amp application circuit which is useful in low pass filter circuits.
4. Consider the differentiating operational amplifier circuit. The feedback resistor is 200 kn, and the input capacitor is 20 uF. If a ramp voltage applied across the input which is -2 V after one second. It increases by -2 V every second for six seconds. Calculate the output voltages of the amplifier for each second after the ramp voltage on the input has been applied. From this draw a graph of output voltage against time and compare this to the input voltage.
A certain op-amp is used in a feedback configuration having a gain of 20 and a bandwidth of 500 kHz. a)If the external resistor values are changed to increase the gain to 40, what is the new bandwidth? The new bandwidth is 250khz What is the unity-gain bandwidth of the op-amp ??
3G 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 voltage of the second stage stage. a.-2640 mV b.-26.4 mV c.-1.2 mV d.26 V
3D 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 mV
Q) An amplifier has voltage gain with the feedback of 100. If the gain without feedback changes by 40% and the gain with feedback should not vary more than 8%, the values of open-loop gain and feedback ratio will be respectively given by (a) 500 and 1.8% (b) 50000 and 0.8% (c) 500 and 0.8% (d) 5000 and 1.8%
An op-amp has an open-loop gain of 104 and a dominant open-loop pole at 4Hz. If an inverting amplifier with a gain of -100 is made from this op-amp, what is the resulting amplifier bandwidth? What is the gain-bandwidth product?
An amplifier has voltage gain with the feedback of 100. If the gain without feedback changes by 409 and the gain with feedback should not vary more than 8%, the values of open-loop gain and feedback ratio will be respectively given by
An amplifier has voltage gain with the feedback of 100. If the gain without feedback changes by 40% and the gain with feedback should not vary more than 8%, the values of open-loop gain and feedback ratio will be respectively given by (a) 500 and 1.8% (b) 50000 and 0.8% (c) 500 and 0.8% (d) 5000 and 1.8%
3C 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 gain of the third stage stage. a.-22 b.22 c.-30 d.31