Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. With the help of circuit diagram explain a Miller Sweep generator
Figure given below shows the circuit of a Miller integrator or a sweep circuit. Transistor Q1 acts as a switch and transistor Q2 is a common - emitter amplifier. i.e. a high gain amplifier. Consider the case when Q1 is ON and Q2 is OFF. At this condition, the voltage across the capacitor C and the output voltage V0 is equal to Vcc.
When a negative pulse is applied to the base of Q1, the emitter - base junction of Q1 is reverse biased and hence Q1 is turned OFF. Thus, the collector voltage (Vc1) of Q1 increases which increases the bias to Q2 and as a result Q2 is turned ON. Since Q2 conducts, Vout begins to decrease. Because the capacitor is coupled to the base of transistor Q2, the rate of decrease of output voltage is controlled by rate of discharge of capacitor. The time constant of the discharge is given by td = RB2C.
As the value of time constant is very large, the discharge current practically remains constant. Hence, the run down of the collector voltage is linear. When the input pulse is removed, Q1 turns ON and Q2 turns OFF. The capacitor charges quickly to +Vcc through Rc with the time constant t =R C.
if JK flip flop has 1600hz frequency .then what is the input frequency?
Q. Describe binary number system? The binary number system has a base of 2 with two distinct digits (bits), 1 and 0. A binary number is expressed as a string of 0s and 1s, and
Q. Physical operation of the junction of diode? The physical operation of the junction can be described in terms of the charge-flow processes. Usually there is a greater concen
Merits and Demerits of Stepper Motor Followings are the merits and demerits of stepper motors. Merits : a.They are compatible with digital systems b.For the co
Explain the effect of temperature on the resistivity of conducting materials. The resistance of most metals rises with rise of temperature whereas that of semiconductors and el
Speed control of DC Motor The DC motor are versatile motors among the available electrical motors due to their superior characteristics. These motors give a smooth sp
Q. Explain working of Shaded-pole motors? Shaded-pole motors: The least expensive of the fractional-horsepower motors, generally rated up to 1 / 20 hp, they have salient stator
Q. Elucidate the process of inter-register signalling. Ans: Registers are used in common control exchanges to store as well as analyze routing data. They are provided on a
Give the properties and application of cotton. Cotton : It is base material for insulating fibres. Properties: It can be enhanced by impregnating with varnish. 1)
1. For the flyback converter operating in the discontinuous "current" (flux) mode, derive an expression for the time at which the magnetizing current returns to zero. 2. A forwa
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd