Electric Traction Services: Electric Traction Services can be broadly classified as: Electric Trains. Electric buses, trams (or tramways) and trolleys. Battery driven and solar powered vehicles. Electric Trains: Electric trains run on fixed rails. They are further classified as Main Line Trains and Suburban Trains. Main Line Trains: Intercity passenger and goods trains which come […]
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Motor Design Parameters: Different parts of a load may be coupled through different mechanisms, such as gears, V-belts and crankshaft. These parts may have different speeds and different types of Motions such as rotational and translational. This section presents methods of Motor Design Parameters finding the equivalent moment of inertia (J) of motor-load system and equivalent
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Torque Equation of Motor Load System: A motor generally drives a load (machine) through some transmission system. While motor always rotates, the load may rotate or may undergo a translational motion. Load speed may be different from that of motor, and if the load has many parts, their speeds may be different and while some
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Television System: Color Picture Tube Working : A Color Picture Tube Working requires correct sweep currents, input voltages and drive voltages. Having said this very quickly, it is now a good idea to examine the circuit block … Color Television Receiver Block Diagram : Figure 17-25 shows the block diagram of a Color Television Receiver
Color Picture Tube Working: A Color Picture Tube Working requires correct sweep currents, input voltages and drive voltages. Having said this very quickly, it is now a good idea to examine the circuit block of Figure 17-23, to gauge the complexity of those requirements. The Color Picture Tube Working has three cathodes, or electron guns;
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Monochrome Television Receiver Block Diagram: Monochrome Television Receiver Block Diagram as shown in Figure 17-9, TV receivers use the superheterodyne principle. There is extensive pulse circuitry, to ensure that the demodulated video is displayed correctly. To that extent the TV receiver is quite similar to a radar receiver, but radar scan is generally simpler, nor
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Phased Array Radars: Phased Array Radars – Introduction With some notable exceptions, the vast majority of radars have to cover an area in searching and/or tracking, rather than always being pointed in the same direction. This implies that the antenna will have to move some limited beam movement can be produced by multiple feeds or
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Pulsed Radar System Block Diagram: A very Pulsed Radar System Block Diagram set was shown in Figure 16-1. A more detailed block diagram will now be given, and it will then be possible to compare some of the circuits used with those treated in other contexts and to discuss in detail those circuits peculiar to
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Microwave Link in Electronic Communication: A Microwave Link in Electronic Communication performs the same functions as a copper or optic fiber cable, but in a different manner, by using point-to-point microwave transmission between repeaters. Many links operate in the 4- and 6-GHz region, but some links operate at frequencies as low as 2 GHz and
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Data Communication Circuit using Modem: Data Communication Circuit using Modem – The name modem is a contraction of the term MOdulator and DEModulator. As the name implies, both functions are included in a modem. When used in the transmitting mode, the modem accepts digital data and converts it to analog signals for use in modulating
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