Calculate the gain of a negative feedback amplifier having A = -3000 and beta= -1/100.

Find the desired values ​​below in the feedback amplifier circuit in the figure. a) Voltage and current in amplifier circuit when Rf resistor is open circuit and RL resistor is present Show step-by-step the formula that gives the profit. b) Step of the formula showing the feedback current gain Ai when the Rf feedback resistor is connected find step.

Consider the following statement: In feedback amplifiers, concerning the connections between the direct amplifiers and the feedbacks network, a shunt connectiın at the input part servers to set an increased versiın of the input impedance of the direct amplifier, whereas again a shunt connection at the output part services to set a decreased version of the output imdepance of direct amplifier. Explain what is wrong with the statement above by drawing representative circuit diagrams and outlining the necessary calculations.

The circuit uses current- (or shunt-) feedback bias. The Si transistor has ICEO = 0, VCEsat =0, and B= 100. If RC = 2k and VCC =12V, size RF for ideal maximum symmetrical swing (that is, location of the quiescent point such that VCEQ =VCC/2). +Vcc Rc Cc lic VL Cc R. -20 "ca. V -10 -12 14 -16

When negative voltage feedback is applied to an amplifier of gain 200, the overall gain falls to 100.   Calculate   (i) the fraction of the output voltage fedback.    (ii) If this fraction is maintained, calculate the value of the amplifier gain required if the overall stage gain is to be 75.

Consider the series-shunt feedback amplifier of Figure below. Assume that the voltage divider (R1, R2) is implemented with a 1-MN potentiometer. Assume that the MOSFET is %3D biased so that gm = 4 mA/V and r, is large. Also, Rp = 10 kN. VDD Find the value of R1 that results in a closed-loop gain of 5 V/V. Rp R2 R