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. Describe the time division switching?
Ans:
Space and Time Switching:
Space Switches: Connections can be made between outgoing and incoming PCM highways by means of a cross point matrix of the form displayed in Figure. Thoughdifferent channels of an incoming PCM frame may need to be switched by various cross points in order to reach different destinations. The cross point is hence a two-input AND gate. One input is connected to the incoming PCM highway and the other to a connection store that produce a pulse at the required instant. A group of cross points gates can be implemented as an integrated circuit, for instance by using a multiplexer chip.
Figure demonstrates a space switch with k incoming and m outgoing PCM highways, each one carrying n channels. Connections store for every column of cross points is a memory with an address location for every time-slot that stores number of the cross points to be operated in that time slot. This number is written into address by controlling processor in order to setup connection. Numbers are read out cyclically, in synchronism with incoming PCM frame. In every time slot, number stored at the corresponding store address is read out and decoding logic converts this into a pulse or a single lead to operate relevant cross point.
As a cross point can make a different connection in each of the n time-slots, its equivalent to n cross points in a space division network. Complete space switch is hence equivalent to n separate k x m switches in a space division switching network.
The reversibility principle of electrical machines states that an electrical machine can be used to operate either as a motor, converting electrical to mechanical energy, or as a g
Q. Find v o in the circuit shown in Figure by using the ideal op-amp technique.
Q. Explain working of Ring Topology? Ring Topology: In ring topology, all user nodes are connected with physical path acting as links of a chain and last user node is co
Interpoles and Compensating Windings: The most generally used method for aiding commutation is by providing the machine with inter poles, also known as commutating poles, or si
Control Strategies Equation shows that output voltage V0 can be controlled through α and this duty cycle α can be varied by various strategies which are as follows.
how does Combination Clipper works?
What is the difference among 8085 and 8086 in microprocessor? Ans) 8086 has a special concept known as memory segmentation. It permits parallel processing, whereas 8085 does no
Types of bias circuit for Class A amplifiers: There are five common types of biasing circuits used with Class A bipolar transistor amplifiers: A. Fixed bias B. Collector
Q. You are to construct a modified truth table for the circuit realization of the SRFF shown in Figure. As indicated in the text, you guess an output and then go back ato check it
Q. With the use of a K map, simplify the following Boolean expressions and draw the logic diagram.
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