Explain a miller sweep generator, Electrical Engineering

Assignment Help:

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.

1423_Explain a Miller Sweep generator.png

 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.


Related Discussions:- Explain a miller sweep generator

What do you mean by insurance, Q. What do you mean by Insurance? This i...

Q. What do you mean by Insurance? This is done by creating a common fund out of the contribution (known as premium) from several persons who are equally exposed to the same los

Find the minimum sum of products, Given that , f(a,b,c,d,e) = Σm (6,7,9,11,...

Given that , f(a,b,c,d,e) = Σm (6,7,9,11,12,13,16,17,18,20,21,23,25,28) using a Karnaugh map. (i) Find the essential prime implicants (ii) Find the minimum sum of product

Ldax load accumulator indirect instruction , LDAX  Load Accumulator Indire...

LDAX  Load Accumulator Indirect Instruction This instruction is used to copy data  from memory  location pointed by register  pair only  BC or DE  to the accumulator  HL pair

Explain cwd instructions in 8086 family, Explain CWD instructions in 8086...

Explain CWD instructions in 8086 family with example and their effect on flag. Convert signed word to signed double word: CWD instruction enlarges the sign bit of a word int

Expression for the real power transfer capacity, Q. Consider a lossless tra...

Q. Consider a lossless transmission line with only a series reactance X. (a) Find an expression for the real power transfer capacity of the transmission system. (b) What is P

Explain current divider rule, Explain current divider rule Current flow...

Explain current divider rule Current flow through at every resistor that connected by parallel can be find by using current divider rules (CDR).

Inverter, single phase voltage source inverter complete circuit

single phase voltage source inverter complete circuit

Circuit, i need to talk to expert asap.

i need to talk to expert asap.

Compute the efficiency of the autotransformer, The single-phase, 50-kVA, 24...

The single-phase, 50-kVA, 2400:240-V, 60-Hz, two-winding distribution transformer is connected as a step-up autotransformer, as shown in Figure. Assume that the 240-V winding is pr

Digital control system, block diagram of digital control system and explain...

block diagram of digital control system and explain each block

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

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!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd