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. Use necessary circuit and waveforms to explain the working of a Bootstrap sweep generator
The bootstrap circuit illustrated in figure given below is a commonly used method for achieving a constant charging current. Here, transistor Q1 acts as a switch and Q2 as an emitter follower which is connected across capacitor C. Therefore, the output voltage V0 will be approximately equal to the voltage across C. The transistor, therefore, provides a low resistance output terminal for the saw-toothed generator.
Initially, Q1 is ON and Q2 is OFF. Hence, C1 is charged to the supply voltage Vcc through diode D and the output voltage V0 is zero. When a negative pulse, as shown in waveform figure, is applied to the base of Q1 and Q1 is turned OFF. Now, capacitor C1 discharges and capacitor C starts charging through resistor R. As a result, the base voltage of Q2 and V0 start increasing from zero volts. Therefore, diode D becomes reverse biased. The value of capacitor C1 is much larger than that of capacitor C. The voltage across R remains substantially constant throughout the charging process and thus the charging current (iR) is maintained constant. So, capacitor C is charged with a constant current which causes the voltage across C, i.e. the output voltage V0 to increase linearly with time with the relation, V0 = Vcct/RC.
How many machine cycles does 8085 have, mention them The 8085 have seven machine cycles. They are Opcode fetch Memory read Memory write I/O read I/O
Q. Discuss in brief on combination clippers ? Combination clippers are a combination of biased positive and negative clippers. With a combination clipper, a portion of both pos
Power Distribution System The Distribution System contains: - Sub-transmission system in voltage ranges from 33 kV to 220 kV. The energy goes from power subs
Q. Explain Repetitive coverage of satellite? Due to repeated passes of the satellite over the same reach, data is repeatedly acquired. Therefore, comparisons of a dynamic pheno
Q. A semiconductor diode with IS = 10µA and a 1-k resistor in series is forward-biased with a voltage source to yield a current of 30mA. Find the source voltage if the diode I-V e
who to write resume for job
It is needed to use a half-wave rectifier for a dc power supply that gives an average dc output voltage of 15 V and a maximum ±1V ripple is permitted. The rectifier feeds a load of
Normal 0 false false false EN-IN X-NONE X-NONE
Explain LDA, STA and DAA instructions LDA copies the data byte into accumulator from the memory location particular by the 16-bit address. STA copies the data byte from the acc
Conditional Jumps The most important part of programming is its decision making capability. Which is normally provided by statements like if then else in high level
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