Q2 In step-down regulator in Figure below, calculate the output voltage if the switching frequency is 76.923 kHz and the capacitor discharging time is 7 us. What happen to the output voltage if the discharging time of the capacitor increased to 9 us? Vour Vis Variable pulse-width modulator Comparator Error signal VREF D2

Q2 In step-down regulator in Figure below, calculate the output voltage if the switching frequency is 76.923 kHz and the capacitor discharging time is 7 us. What happen to the output voltage if the discharging time of the capacitor increased to 9 us? Vour Vis Variable pulse-width modulator Comparator Error signal VREF D2

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

See similar textbooks

Similar questions

45) We have buck converter, the maximum current of the inductor is Imax, the minimum inductor currentIs Imin. We now know the period of the switching signal is T=20 µs, the duty cycle D is 0.5, the load resistance R is 2 ohms, the input voltage is 30V, and the inductance L is 100 µH; What is Imax andIs Imin?
Given the following details: The inverting adder schematic as seen below Vac is an AC voltage source which generates a sine waveform with amplitude 1mV and frequency 1kHz Vout is a sine waveform with amplitude 1V and has a DC offset of 3.5V Find the values of Vdc, R1, R2 and Rf that would satisfy the description for Vout. Assume ideal scenario (i.e. do theoretical computations instead of practical simulations)
Devices that pass the signal from its source to the measurement device without aphysical connection by using transformer, optical or capacitive coupling technique arecalled?Select one a. bridgesb. isolatorsc.filters d.rectifiers
1.Design a buck converter and a resistive load operating in CCM mode with the following specifications:(∆V0)/V0= 0.5 %, Vin = 20 V, f =30 kHz, Duty cycle d=0.4, and R =5.33 Ω. Determine (a) the output voltage and current of the buck converter, the Critical(minimum) inductance for CCM mode (b) select L = 600 µH, find the maximum IL,max and the minimum IL,min inductorcurrents. find the capacitor value that corresponds to (∆V0)/V0= 0.5 % for this buck converter
of a Flyback converter with Circuit parameters given below.Circuit Parameters;Input Voltage Vs= 48 VN1/N2=3Lm=500 μHR=5ΩC=200 μFSwitching frequency f=40 kHzOutput Voltage Vo=10 Va) Duty Cycleb) In terms of magnetization inductor (Lm); mean, maximum andtheir minimum values;c) Find the output voltage fluctuation. (All components are ideal.assume.)
Please written by computer Answer the following questions:a. Name a suitable topology that can be used in the above DC/DC converters to achieve the required regulation with the minimum provided efficiency.b. Calculate the efficiency of the linear regulator.c. Calculate the total input power and the input current.d. Calculate the overall efficiency of the system.e. If a 100uF capacitor is used at the input to minimize the ripple. Assume the rise time of the input source is 0.2ms. Estimate the maximum inrush current to charge the capacitor to 12V.
A load resistor RL is in parallel with a noisy source (vS << VS), and a biasing component, which canbe a linear or a nonlinear element. Suppose we can write the total source voltage vS and the totalload voltage vL as shown in the image. Answer the ff and explain clearly. i. Let the biasing component be a linear resistor with resistance RB. Without the noise, determinethe value of RB so that the load voltage is 5V. ii. With the noise, determine the ratio of the load voltage noise and the source noise (vI /vS )..
Q.2/ Find the value of R2 in figure below so that the circuit will oscillate. Q.3/ For the circuit shown below, find Rf if rds for the JFET is 350 ohms when oscillation is stable. Q.4/ Find Rf and fr: Q.5/ How to change the frequency of oscillation of the following circuit to 10kHz? Q.6/ Modify the sawtooth generator in figure below so that its peak-to-peak output is 4V. Is it aVCO? Q.7/ To what value must Cext be changed in figure below to achieve a frequency of 25kHz?What is the benefit of C1? Can be neglected? Q.8/ What is the crystal oscillator? Explain its principle of operation. Explain how to connect a crystal with frequency of 10MHz to a microcontroller?
For a three-stage system with an input power Pin = - 20 dBm and power gains of the three stages as Ap1 = 13 dB , Ap2 = 16 dB, and Ap3 = -6dB , determine the output power (Pout) in dBm and watts
Figure 1 shows the equivalent circuit of a voltage amplifier with a source and aload connected to its input and output, respectively. Suppose that the sourceinternal resistance is Rs = 5 kΩ, the amplifier input resistance is RIN = 95 kΩ, theamplifier gain is A = 100, the amplifier output resistance is ROUT = 150 Ω and theload resistance is RL = 5 kΩ. For a sinusoidal input with amplitude VS = 5 mV, whatis the amplitude of the voltage VL across the load resistor RL? What would thevoltage across the load be without the amplifier?
P 3.15)A single-phase bridge rectifier is supplied from a 220-V, 60-Hz source. The load resistance is RL = 300 Ω. (a) Design a C-filter so that the ripple factor of the output voltage is less than 3%. (b) With the value of capacitor Ce in part (a), calculate the average load voltage Vdc
In a DC-DC boost converter, the duty ratio is controlled to regulate the output voltage at 48 V. The input DC voltage is 24 V. The output power is 120 W. The switching frequency is 50 kHz. Assume ideal components and a very large output filter capacitor. The converter operates at the boundary between continuous and discontinuous conduction modes. The value of the boost inductor (in μH) is