Effects of Ground on Antenna Performance: The Effects of Ground on Antenna Performance on a detailed discussion of the interaction (see Figure 9-11). Ungrounded Antennas: As was know, when a radiation…
Noise and Frequency Modulation: Noise and Frequency Modulation is much more immune to noise than amplitude modulation and is significantly more immune than phase modulation. In order to establish the…
Theory of Frequency Modulation and Phase Modulation: Frequency Modulation and Phase Modulation is a system in which the amplitude of the modulated carrier is kept constant, while its frequency and…
Sample and Hold Circuit: Four basic sample and hold circuit are shown in Fig. 14.141. In these circuits a JFET is used as switch. During the sampling time the JFET…
Supply Systems Articles: Electric Supply System: The conveyance of electric power from a power station to consumers’ premises is known as Electric Supply System. An electric supply system consists of…
Introduction to Modern Power System Articles: Introduction to Modern Power System Planning: In Modern Power System Planning, electric energy is an essential ingredient for the industrial and all-round development of…
Inductance and Resistance Articles: Definition of Inductance of Transmission Line: The formula for definition of inductance of transmission line is as follows: Voltage induced in a circuit is given by…
Ammeters Articles: DC Ammeter: The PMMC galvanometer constitutes the basic movement of a dc ammeter. Since the coil winding of a basic movement is small and light, it can carry…