INTRODUCTION If an electric current flows through a conductor in a magnetic field‚ the magnetic field exerts a transverse force on the moving charge carrier which tends to push them to one side of the conductor. A buildup of charge at the sides of the conductors will balance this magnetic influence‚ producing a measurable voltage between the two sides of the conductor. This presence of measurable transverse voltage is the Hall Effect. The Hall effect was discovered in 1879 by Edwin Herbert Hall
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INSTRUCTIONAL MANUAL IN ALTERNATING CURRENT CIRCUITS An Instructional Manual Presented to the Faculty of the Graduate School Western Institute of Technology La Paz‚ Iloilo City In partial fulfillment of the Requirements for the Course EGC 600 – RESEARCH by Engr. boysie t. tejada March 2012 INSTRUCTIONAL MANUAL IN ALTERNATING CURRENT CIRCUITS An Instructional Manual Presented to the Faculty of the Graduate School Western Institute of Technology La Paz
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denoted by R(E). 9. Direct Current Such a current that does not change its direction is known as direct current. It is denoted by DC‚ which is obtained from primary and secondary cells. 10. Alternating Current Such a current that reverses its direction with a constant frequency from positive to negative and negative to positive direction is known as Alternating Current‚ obtained by generators. It is denoted by AC. 11. Conventional Current An electric current considered to flow from points
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subsequently used for further stages. Current pulses with high peak amplitude are drawn from a rectified voltage source with sine wave input and capacitive filtering. The current drawn is discontinuous and of short duration irrespective of the load connected to the system. Since many applications demand a DC voltage source‚ a rectifier with a capacitive filter is necessary. However‚ this results in discontinuous and short duration current spikes. When this type of current is drawn from the mains supply
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analyzing the dependence of the electrical current as a function of voltage and as a function of resistance. Also‚ we studied the current flow and voltage in series and parallel. Finally‚ the lab determined the equivalence resistance of series and parallel combination of resistors and compared the results with theoretical data. Theoretical Background: The first thing that needs to be described in this lab is what the electric current I: I =. The electric current is defined as charge over time and the
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Induction cooktops heat the pan only. Photo courtesy of Consumer Guide Products KITCHEN APPLIANCES Microwaves Nonstick Cookware PlanetGreen.com: Are you a green appliance guru? Do you crave the simplicity and rapid heating of electric stoves but long for more responsive temperature control? Perhaps your favorite TV chef has won you over to cooking with gas‚ but the thought of tearing up your kitchen to put in a gas line leaves you cold. Maybe you have a gas stove‚ but wish
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unbalanced loads has degraded the power quality in the power distribution network [1]. To improve the quality of power‚ active power filters have been proposed [2]–[4]. The distribution static compensator (DSTATCOM) is a shunt active filter‚ which injects currents into the point of common coupling (PCC) (the common point where load‚ source‚ and DSTATCOM are connected) such that the harmonic filtering‚ power factor correction‚ and load balancing can be achieved. In practice‚ the load is remote from the
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_____________________________CORRTECH CATHODIC PROTECTION FOR PORT FACILITIES _____________________________CORRTECH Contents • • • • • • What causes corrosion What is CP and how does it work? Galvanic vs. impressed current Electrolytes (or where can I use CP) Marine applications Condition assessments _____________________________CORRTECH What is Corrosion? Corrosion is defined as the degradation of a material due to a reaction with it’s environment. Metals require energy to process
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DUMALE AMPERE Metric (SI) unit of electrical current. One ampere is the amount of current flowing with an electromotive force of one Volt in a circuit having a resistance of one Ohm. Named after the French mathematician and physicists Andre Marie Ampere who discovered the basic laws of electromagnetism. AMPERE’S FORCE LAW Ampere’s force law states that there is an attractive or repulsive force between two parallel wires carrying an electric current. This force is used in the formal definition of
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War of Currents Two of the greatest inventors in American history are Thomas Edison and Nikolas Tesla. However‚ they had not achieved their success on their own. Many argue that the rivalry between them had pushed them to create technology which we still use today. Without the extraordinary relationship between the two‚ Tesla and Edison would not have accomplished the level of success both of them had. In the beginning‚ the men had great respect for each other. Tesla had left Serbia for New
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