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. Explain the working of Rectifier Circuits?
A simple half-wave rectifier using an ideal diode is shown in Figure(a). The sinusoidal source voltage vS is shown in Figure (b). During the positive half-cycle of the source, the ideal diode is forward-biased and closed so that the source voltage is directly connected across the load. During the negative half-cycle of the source, the ideal diode is reverse-biased so that the source voltage is disconnected from the load and the load voltage as well as the load current are zero. The load voltage and current are of one polarity and hence said to be rectified. The output current through the load resistance is shown in Figure (c).
In order to smooth out the pulsations (i.e., to eliminate the higher frequency harmonics) of the rectified current, a filter capacitor may be placed across the load resistor, as shown in Figure (a). As the source voltage initially increases positively, the diode is forward-biased since the load voltage is zero and the source is directly connected across the load. Once the source reaches its maximum value VS and begins to decrease, while the load voltage and the capacitor voltage are momentarily maintained at VS, the diode becomes reverse-biased and hence open- circuited. The capacitor then discharges over time interval t2 through RL until the source voltage vS(t) has increased to a value equal to the load voltage. Since the source voltage at this point in time exceeds the capacitor voltage, the diode becomes once again forward-biased and hence closed. The capacitor once again gets charged to VS. The output current of the rectifier with the filter capacitor is shown in Figure(b), and the circuit configurations while the capacitor gets charged and discharged are shown in Figure(c). The smoothing effect of the filter can be improved by increasing the time constant CRL so that the discharge rate is slowed and the output current more closely resembles a true dc current.
'Pentium processor has a superscalar architecture'. Explain the meaning of the statement. The Pentium microprocessor is organized along with three execution units. Single execu
what is finger voltage?
Q. What do you mean by Phase Sequence? It is standard practice in the United States to designate the phase A-B-C such that under balanced conditions the voltage and current in
i am battling with mesh, node anaalysis, superposition, node thevenin and norton equivalents
where is a zener diode used in a car
Explain the principle of induction applied in electrical machine
Octal to binary Conversion Conversion form octal to binary is the reverse of this process. Express each octal digit in three bit binary equivalent. Ex. Convert 3576
Q. What is a clamper? Differentiate between a clamper and clipper. Clamping network shifts (clamps) a signal to a different dc level, i.e. it introduces a dc level to an ac sig
What are hard magnetic materials? Hard Magnetic materials- They have a slowly rising magnetization curve along with large hysteresis loop area and therefore large energy losses
How to design a single phase distribution circuit from a supply point to a load?
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