Monolithic Diodes: Monolithic Diodes - The fabrication of diode is very straight forward. Generally any two terminals of the transistor are connected together to form one of the electrodes while the remaining terminal can be…
Surface Acoustic Waves Devices(SAW): Surface Acoustic Waves Devices may be propagated on the surfaces of solid piezoelectric materials, at frequencies in the VHF and UHF regions. Devices employing SAW principles were first discussed in the…
Generating Voltmeter Principle and Construction: High voltage measuring devices employ generating principle when source loading is prohibited (as with Van de Graaff generators, etc.) or when direct connection to the high voltage source is to…
Block Diagram of Electric Drive System: It is normal practice in control engineering to represent a control system by means of a Block Diagram of Electric Drive System, with a systematic connection of blocks in…
Node Elimination Technique in Power System: In stability studies, it has been indicated that the buses to be considered are those which are excited by the internal machine voltages (transient emf's) and not the load…
Potential Transformer Tests: The three Potential Transformer Tests are namely, Polarity check, Ratio check and Phasing check. Polarity check: Polarity check in Potential Transformer Tests is performed in the same way as that for a…
Differential Relay: Most of the relays discussed so far relied on excess of current for their operation. Such relays are less sensitive because they cannot make correct distinction between heavy load conditions and minor fault…
Choke Balun: A Choke Balun, or balance-to-unbalance transformer, is a circuit element used to connect a balanced line to an unbalanced line or antenna. Or, as is perhaps a little more common, it is used…
Asymmetrical Network in Network Analysis: An asymmetrical network has following electrical properties, Iterative impedance Image impedance Image transfer constant Iterative impedance (Z′0): Consider that infinite asymmetrical networks having identical electrical properties are connected in cascade…
Thevenin Equivalent Circuit: Thevenin's theorem gives us a method for simplifying a given circuit. The Thevenin Equivalent Circuit form of any complex impedance circuit consists of an equivalent voltage source VTh, and an equivalent impedance…
