Q3. A relaxation oscillator is to generate train of pulses that is used to fire a Thyristor circuit in acontrolled rectifier and, it is known that the external capacitor C=0.1uF and firing pulses aretaken across 1200 with the following data of the relaxation oscillator.VBB=15V; ReB=4.7ko;;=0.7; the valley voltage is=0.9V; Ip=10µA; the valley current is=12mA; R81 duringdischarge =900Determine the followings;į. The value of Vp to switch-on the UJT;ii. The range of Rị to switch-on and switch-off the UJT;iii. Frequency of oscillation with drawing;

Answered: Image /qna-images/answer/853ffa66-e840-4bf0-86e7-87ff976acea9.jpg

Q3. A relaxation oscillator is to generate train of pulses that is used to fire a Thyristor circuit in a controlled rectifier and, it is known that the external capacitor C=0.1uF and firing pulses are taken across 120n with the following data of the relaxation oscillator. VBB=15V; ReB=4.7ko;z=0.7; the valley voltage is=0.9V; I,=10µA; the valley current is=12mA; R81 during discharge =900 Determine the followings; į. The value of Vp to switch-on the UJT; ii. The range of R1 to switch-on and switch-off the UJT; iii. Frequency of oscillation with drawing;

Q3. A relaxation oscillator is to generate train of pulses that is used to fire a Thyristor circuit in a controlled rectifier and, it is known that the external capacitor C=0.1uF and firing pulses are taken across 120n with the following data of the relaxation oscillator. VBB=15V; ReB=4.7ko;z=0.7; the valley voltage is=0.9V; I,=10µA; the valley current is=12mA; R81 during discharge =900 Determine the followings; į. The value of Vp to switch-on the UJT; ii. The range of R1 to switch-on and switch-off the UJT; iii. Frequency of oscillation with drawing;

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

Q3) Bring out the advantages and disadvantages of microwave tube devices and semiconductor devices. What are the most common types of microwave diodes and transistors in use give their basic features and applications? What are the most common types of microwave ICs? Give details of the circuit elements and applications
2. An AC voltmeter uses a bridge rectifier with silicon diodes and a PMMC instrument with FSD = 75 µA. If the meter coil resistance is 900 Q and the multiplier resistor is 708 k2, calculate the applied rms voltmeter when the voltmeter indicates FSD.
An integrated circuit or monolithic integrated circuit (also referred to as an IC, a chip, or amicrochip) is a set of 1.................. on one small flat piece (or "chip") of semiconductor material,normally 2. ……………The integration of large numbers of tiny transistors into a small chip results in circuits that areorders of magnitude smaller, cheaper, and faster than those constructed of discrete electroniccomponents. The IC's mass production 3. ………….., reliability and building-block approach tocircuit design has ensured the rapid 4…………. of standardized ICs in place of designs usingdiscrete transistors. ICs are now used in virtually all electronic equipment and haverevolutionized the world of electronics. Computers, mobile phones, and other digital homeappliances are now 5. ………….. parts of the structure of modern societies, made possible by thesmall size and low cost of ICs. Integrated circuits were made practical by mid-20th-century technology 6. …………….…
A 10 V Zener diode is used to regulate the voltage across a variable loadresistor. The input voltage Vs varies between 13 and16 V. The loadcurrent (??) varies between 10 and 85 mA. The minimum Zener current is15 mA. Findi. The maximum value of Rsii. The maximum power dissipated by the Zener diode, using the value ofRs.
Discuss why the Cockcroft-Walton circuit preferred for voltage multiplier circuit. High voltage engineering
Design rectifier circuits to provide an output of100 VDC using a.) HWR b.) Center-tappedFWR and c.) Bridge-Type FWR circuits. For each circuit, calculate the transformer peakvoltage rating, the diode PIV ratings, and thetransformer turns ratio, if power is taken fromthe 220V line ac supply
Design rectifier circuits to provide an output of100 VDC using a half wave rectifiercalculate the transformer peakvoltage rating, the diode PIV ratings, and thetransformer turns ratio, if power is taken fromthe 220V line ac supply.
For the Zener regulated power supply a shown, the rms value of vI is 15V, the operating frequency is 60Hz, R =100Ω, C =1000μF, the on voltage of diodes D1 and D2 is 0.75V, and the Zener voltage of diode D3 is 15V.(a)What type of rectiﬁer is used in this power supply circuit?(b) What is the dc voltage at V1? (c) What is the dc output voltage VO?(d)What is the magnitude of the ripple voltage at V1? (e) What is the minimum PIV rating for the rectiﬁer diodes? (f) Draw a new version of the circuit that will produce an output voltage of−15 V.
A 60-Hz full-wave rectiﬁer is built with a transformer having an rms secondary voltage of 20 V and ﬁlter capacitance C =150,000 μF. What is the largest current that can be supplied by the rectiﬁer circuit if the ripple must be less than 0.3 V?
Can you implement this using circuit simulator app or QUCS
a) Compare metallic foil vs semiconductor strain gauges (construction, advantages and disadvantages). b) Consider a Wheatstone bridge circuit (Figure 1) that has all resistances equal to 250 ?. The resistance R1 is a strain gauge that cannot sustain a power dissipation of more than 0.25 W. What is the maximum applied voltage that can be used for this bridge circuit? At this level of bridge excitation, what is the bridge sensitivity?
describe the working principle OF MOS (need only handwritten solution .otherwise downvote.)