Need of Modulation in Communication System: Until the process of superimposing a low-frequency (long-wave) voice information component on a high-frequency (short-wave) carrier signal was perfected, the most widely used form of communications was a system…
Need of Instrumentation Amplifier: As we know Instrumentation Amplifier are used to amplify the low level differential signals very precisely, in presence of the large common mode noise and interference signals. Hence a good Need…
Nature of Traction Load: Nature of Traction Load describes as when the train runs at a constant velocity on level track, a number of frictional forces oppose its motion. The friction at bearings, guides etc.…
Nature of Electric Supply: The nature of electric supply available may be 3-phase ac, single-phase ac or dc. In case three-phase ac supply is available, polyphase induction motor, squirrel cage type for small ratings and…
Natural Cooling System in Transformer: Natural Cooling System in Transformer - Smaller size transformers are immersed in a tank containing transformer oil. The oil surrounding the core and windings gets heated, expands and moves upwards.…
n Stage Cascaded Amplifier: As already discussed, several amplifier stages are usually cascaded to increase the overall voltage gain of the amplifier. However, sometimes cascading is done to obtain the desired output and input impedance…
N Channel Power MOSFETs or V-MOSFET or V-FET: N Channel Power MOSFETs - Power MOSFETs are usually constructed in V-configuration, as shown in Fig. 13.94. That is why, the device is sometimes called the V-MOSFET or…
Mutual Inductance of Coupled Circuits: Mutual Inductance of Coupled Circuits - A voltage is induced in a coil when there is a time rate of change of current through it. The inductance parameter L, is…
Multivibrator definition and Types (Astable, Monostable and Bistable): A multivibrator is basically a two stage R-C coupled amplifier with positive feedback from the output of one amplifier to the input of the other, as illustrated…
Multistage Impulse Generator Circuit: In the early discussion, the generator capacitance C1 is to be first charged and then discharged into the wave shaping circuits. A single capacitor C1 may be used for voltages up…
