Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN: 9780133923605
Author: Robert L. Boylestad
Publisher: PEARSON
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An amplifier has a gain of 1000. When the negative feedback is applied the gain reduces to the value equal to 1. Find the feedback factor.
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- An amplifier has a gain of 2000. When the negative feedback is applied the gain reduces to the value equal to the value of your roll no. Find the feedback factor.arrow_forwardProblem 2 A positive-feedback amplifier circuit (inverting Schmitt trigger) shown in the following figure exists in the negative stable state. The amplifier's power supply rails are ±12 V. Determine output voltage given the applied trigger signal. Express your result in volts. Vtrigger = 4 [V] 3 kN 3 kN vt + Vout 104 Veriggerarrow_forwardI need the answer as soon as possiblearrow_forward
- A system has a gain of 80 db without feedback, if the negative feedback is 1/50th. What is the closed loop gain of the system in db with the addition of the negative feedback?arrow_forward68. A 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 f₂ = 501.5 kHz before feedback, what is the value of lower cutt- off frequency after negative feedback? (i) 1.5 kHz (ii) 272.8 Hz (iii) 136.4 Hz (iv) 3 kHz 69. In Q 68, what is the value of upper cut-off frequency after negative feedback? (1) 501.5 kHz (iii) 2006 kHz (ii) 1003 kHz (iv) 5.52 MHzarrow_forwardQ- AN AMPLIFIER HAS A OPEN LOOP VOLTAGE GAIN OF -500. THIS GAIN IS REDUCED TO -100 WHEN NEGATIVE FEEDBACK IS APPLIED. FIND THE REVERSE TRANSMISSION FACTOR,6 OF THIS SYSTEM.arrow_forward
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