43. The feedback system shown below oscillates at 2 rad/s when R(S)+ ha (A) K = 2 and a = 0.75 (C) K = 4 and a = 0.5 K (s + 1) S³ + as² + 2s +1 Y(s) (B) K = 3 and a = 0.75 (D) K = 2 and a = 0.5
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- When a second-order system is subjected to a unit step input, the values of 0.5 and wn = 6 rad/sec. The peak time is O a. 0.5 b. Oc. 5 O d. 0.605 O e. 6.05 none100 used to compand A companding system with u from 0V to 10 V sinusoid signal. Draw the characteristic of the typical system.Consider the circult given below a) Identify the circuit with details b) Find the Q-point O Find Vs,Vs Vo, Vos and Vas d) Find the RMS output voltage and draw it In the same graph- with Input e) Comment on the output signal if the input increases to Vinp=20V V 18 V 2.7 w - 10 MA atanm - - 6 V C 100F -0.3 F 1.5 MD - 130 F 220 11
- Problem #2 - A digital signal is to be represented by a positive voltage A for a "1" and negative voltage -A for a "0". It will be detected by taking a single sample and seeing whether the result is positive or negative. However, there is also added noise in the system with an rms value of 0.5V. What value of A is required to reduce the probability of error to 10-728) In a certain oscillator A = 2O. The feedback circuit must have gain magnitude of: 0.05 0.025 0.035 none of the above 29) 555-MMV with R=10 Khom, C=0.1 microF has T= ?: 1.098 us O 1.098 ms 0.1098 ms 30) opamp-AMV with time constant3D0.1 ms, beta=D0.6 ,its frequency will be : 3.6 KHz 0.36 KHz O 360 KHz2. Suppose RB is 1k0 and Rc is 5k. Does Rc have a significant effect on the circuit? Explain (estimate the effect as a percentage). 3. What would be the approximate effect if Rc is 100k?
- HW: Determine Zin, Zo and the small-signal voltage gain. P type C₁ C₂ Vo D Vin Rs RD RL SINT 4k 2k 4k Zin -5V Zo +5V = kp 1mA/V2 Vr = -0.8V λ=0 Bobin painleido XL=SL = jwL Frequency Response Sm= 2 kp (VSG₂Q +VT) rd = 1 A IDQ ID= kp (VSC₂+V+) ² notion Xc = Copacite 1 (WC 345Calculate the bandwidth in kHz Blank 1 and an inductor's Q Blank 2 at100MHz. It has an inductance of 6mH and a series resistance of 1.2k2.Q1 Calculate the frequency of a Wien bridge oscillator circuit when R=10 kN and C= 2400 pF, then find the value of R3 and R4 cc Op-amp -N12 2x √R, C₂ R₂C₂ Output sinusoidal signal
- An LPF circuit consisting of a resistor of 2 kQ in series with a capacitor of 0.1uf is connected across a 2V sinusoidal supply. What is the output voltage ( VOUT ) at a * frequency of 10HZ 4.1 O 3 3.999IN THE CIRCUIT BELOW, WHAT IS THE CLOSED LOOP GAIN AND BANDWIDTH? WHAT IS THE AC OUTPUT VOLTAGE AT 100 KHZ? Vin 25 mVp-p Vcc +15 V LF157A VEE -15 V www R₁ 3 ΚΩ R₁ 150 Ω Voutjust need fınal answer Since Vi = 20 mV, Vcc = 25 V, RB = 470 kΩ, RC = 3.2 kΩ, RE1 = 470 Ω, RE2 = 1.2 kΩ, RL = 42 kΩ and β = 110 in the circuit in the figure, the value of the output voltage (Vo) find it. NOTE-1: Capacitors are negligible at mid-band frequency. NOTE-2: The output impedance of the transistor (r0) will be neglected. a. -197,96 mV b. -222,71 mV c. -98,98 mV d. -148,47 mV e. -123,73 mV f. -173,22 mV g. -247,45 mV h. -74,24 mV