high voltage power from the generators of the electrical utility company. The purpose of the steel plant primary transformer is to step-down this voltage. The transformer thus provides high current‚ low voltage power for the EAF furnace. Large furnaces with transformers rated at 100MVA or higher is not uncommon. There are usually two stages to this process. The transformer first steps-down the voltage from high to medium levels. There are different standards for a "medium-level voltage" in
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Green (Pb/Halide-free) Packaging Option 1.2)MAX232 IC: MAJOR SPECIFICATIONS: Input supply voltage range‚ VCC . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to 6V Positive output supply voltage range‚ VS+ . . . . . . . . . . . . . . . . . . . . . VCC − 0.3 V to 15 V Negative output supply voltage range‚ VS− . . . . . . . . . . . . . . . . . . . −0.3 V to −15 V Input voltage range‚ VI: Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . −0.3 V to VCC + 0
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CHAPTER 1 INTRODUCTION This project is mainly used to save power automatically instead of doing manual by using IR sensors The main consideration in the present field technologies are Automation‚ Power consumption and cost effectiveness. Automation is intended to reduce man power with the help of intelligent systems. Power saving is the main consideration forever as the source of the power(Thermal‚ Hydro etc.‚)are getting diminished due to various reasons. Wireless communication
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clockwise direction‚ the right secondary windings will be in the anti-clockwise direction‚ hence the net output voltages will be the difference in voltages between the two secondary coil. The two secondary coil is represented as S1 and S2. Esteem iron core is placed in the centre of the cylindrical former which can move in to and fro motion as shown in the figure. The AC excitation voltage is 5 to 12V and the operating frequency is given by 50 to 400 HZ. Working of LVDT: Let’s study the working of
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EXPERIMENT NO: 1 OBJECTIVE: VERIFICATION OF KIRCHHOFF’S LAWS i) Kirchhoff’s current law(KCL) ii) Kirchhoff’s voltage law(KVL) APPARTAUS REQUIRED: Sl no. Apparatus Type Range /specification Qty. 1 Experimental board Kit or Bread Board 1 2 Power supply DC 9V & 5V 1 3 VOLTMETER Moving-Iron 0-15V 1 4 AMMETER Moving-Iron 0-100mA 1 5 CONNECTING WIRES As required THEORY: I) Kirchhoff’s current law (KCL): It
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algebraic sum of branch currents meeting at any node is zero. (b) The algebric sum of voltage drops in any set of branches forming a closed circuit or loop must be equal to zero. (c) Both (a) and (b) (d) Neither (a) and (b) 3. Mutually coupled circuit is a circuit which is: (a) Bilateral (b) Unilateral (c) None of these (d) Either (a) or (b) 4. Duality is a (a) Transformation in which current and voltages are interchanged (b) Active sources become passive sources (c) Passive sources become
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useful to reduce a network with several voltage sources and resistors to an equivalent circuit composed a single voltage source and a single resistance connected to a load only. It is used in simplifying and analysing complex linear networks power systems and circuits where one particular where a particular load resistor‚ RL in the circuit is subject to change‚ and recalculation of the circuit is necessary with each trial value of load resistance to determine voltage across it and current through it. This
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SN74LS00 Quad 2-Input NAND Gate • ESD > 3500 Volts VCC 14 13 12 11 10 9 8 http://onsemi.com LOW POWER SCHOTTKY 1 2 3 4 5 6 7 GND GUARANTEED OPERATING RANGES Symbol VCC Parameter Supply Voltage Min Typ Max Unit 4.75 5.0 5.25 V 0 25 70 °C TA Operating Ambient Temperature Range IOH Output Current – High – 0.4 Output Current – Low 8.0 1 mA IOL 14 mA PLASTIC N SUFFIX
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found in the literature. These problems have become one of the major concern‚ especially‚ with the use of power electronics devices which are sensitive to the variation of power supply. Among these problems Voltage Sag & Swell are identified as major concern to the electrical consumers. Voltage Sag is one of the most occurring power quality problems that cause severe problems and losses to industry. With the power systems restructuring and shifting trend towards distributed and dispersed generation
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discuss different types of network theorem and their applicability in networks. At the end‚ we will consider the star and delta transformation. The objective of analyzing a particular circuit is to determine the various responses such as current‚ voltage etc. which are produced in the circuit by the presence of active elements. Objectives After studying this unit‚ you should be able to • give the elementary description of network terms and definitions‚ • explain the superposition theorem‚ reciprocating
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