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Conductance: What is it? (Definition, Units & Formula)

Conductance: What is it? (Definition, Units & Formula) What is Conductance? Conductance (also known as electrical conductance ) is defined as the potential for a substance to conduct electricity Conductance is the measure of how easily electrical current (i.e. flow of charge) can pass through a material. Conductance is the inverse (or reciprocal) of electrical resistance, represented as 1/R. To have a better understanding of conductance, one must recall the resistance of an object. In a qualitative sense, the resistance tells us how difficult it is for an electrical current to pass. The resistance between two points can be defined in the quantitative sense as the difference in voltage that is needed to carry a unit current across the two specified points. The resistance of an object is represented as the ratio of the voltage across something to the current passing through it. The resistance is measured in Ohms. The conductance of a component is a determination of how quickly curre
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MOSFET Symbol

MOSFET stands for Metal Oxide Silicon Field Effect Transistor or Metal Oxide Semiconductor Field Effect Transistor. This is also called as IGFET meaning Insulated Gate Field Effect Transistor. The FET is operated in both depletion and enhancement modes of operation. The following figure shows how a practical MOSFET looks like. Construction of a MOSFET The construction of a MOSFET is a bit similar to the FET. An oxide layer is deposited on the substrate to which the gate terminal is connected. This oxide layer acts as an insulator (sio 2  insulates from the substrate), and hence the MOSFET has another name as IGFET. In the construction of MOSFET , a lightly doped substrate, is diffused with a heavily doped region. Depending upon the substrate used, they are called as  P-type  and  N-type   MOSFETs . The following figure shows the construction of a MOSFET . The voltage at gate controls the operation of the MOSFET . In this case, both positive and negative voltages can be
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Synchronous And Asynchronous Motors – Where To Use Them?

The following information deals with the general working principles of Synchronous and Asynchronous motors, their advantages and where are they normally used and what can be achieved using each of these motors. Synchronous and Asynchronous Motors – Working Principles Synchronous Motors This is a typical AC electrical motor that is capable of producing synchronous speeds. In these motors, both the stator and the rotor rotate at the same speed thus achieving synchronization. The basic working principle is, when the motor is connected to the mains, electricity flows into the stator windings, producing a rotating electromagnetic field. This is in turn induced on to the windings in the rotor which then starts rotating. An external D.C source is required to lock the rotor’s rotating direction and position with that of the stator. As a result of this interlocking, the motor has either to run synchronously or not run at all. Asynchronous Motors The working principle of asy
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