3- What is the effect of disconnecting the load resistance from the output of the filter?

bessel bandpass filter analysis and all formula. lecture summary

a. What is the significance of the name IIR in the IIR filter? b. How negative feedback is more stable than positive feedback?

6. Refer to the RC Phase-shift Oscillator below. A Vin R₁ + Rf 6.a. Derive the feedback factor formula for this circuit. 6.b. Draw the output waveform. C C mm C Vout wwwww

if you design differentiator to differentiate input signal varies in frequency between 1 KHz and 20 KHz then find , If capacitor =0.1 micro farad and feedback resistance=1.6 k ohm then Corner frequency =..... KHz O10 O20 030 040

Q2: (a) Design a digital bandpass Butterworth filter with the following specifications: Center frequency of 2.5 kHz. Passband bandwidth of 200 Hz and ripple of 3 dB. Lower stop frequency of 1.5 kHz, upper stop frequency of 3.5 kHz. Stopband attenuation of 15 dB. • Sampling frequency of 8 kHz. O O D

Problem-2 An active filter circuit is given in the Figure-P2. a) Obtain the filter transfer function. What is the order of the filter? b) Sketch the magnitude of the frequency transfer function. What type of filter does it represent? c) Estimate the cutoff frequency and the roll-off slope of the filter. Output Input Figure-P2

6. An AC precision integrator is desired for a particular application to perform the operation: Vo'(t) = -1200 Vi(t) dt The primes indicate the ac portions of the respective functions. The lowest frequency other than a possible de component of the input signal is estimated to be 1.5 kHz. Determine a suitable design. 7. A low frequency differentiator is desired for a particular application n to perform the operation Vo(t) = -0.002 dvi(t)/ dt Based on a periodic signal with a frequency of 1 kHz, determine a suitable design. 8. Design an astable 555 timer circuit to produce 1kHz square wave, where TH = 0.35 ms and T₁ = 0.65 ms. Select C = 0.01 UE, Determine R₁ and Ra. 9. Design a monostable 555 timer circuit to produce an output pulse 5 ms wide. 10. Using op amps with Xsat = +/- 13 V, design a square/ triangular wave function generator circuit to generate 2 kHz triangular wave with a peak-to-peak voltage of 12 V. 11. Design a non inverting Schmitt trigger circuit with VT to be adjustable…

Do as Many you can.. Within 10 minutes.

Q.1. Answer True or False and correct errors if found 1. In a certain Op-Amp. if Ad=3500, Ac=0.35, the CMRR=100dB. 2. The voltage series feedback can increase both input and output impedances. 3. A two-pole Sallen-Key high-pass filter contains one capacitor and two resistors. 4. The main feature of a crystal oscillator is the high frequency operation. Each transistor in a class B power amplifier conducts for the entire input cycle. ✓ The Q-point must be centered on the load line for maximum class A output signal swing 7. The differentiator Op-Amp can convert the triangle waveform into sinewave. ✗Class AB power amplifier eliminates crossover distortion found in pure class A. 9. Wien-bridge oscillators are based on positive feedback circuits. 10. The band-reject filter is composed of multiplication of LPF and HPF.