artifact 2 elc-112
TRANSCRIPT
ARTIFACT 2
ELC-112-2B110/15/2014
ANALYZE ELECTRICAL VALUES FOR
SERIES, PARALLEL, AND SERIES-PARALLEL
CIRCUITS.
Table of Contents
Purpose…………………………………………………….….Slide 3
Subjects to Research…….….……………………...…..Slide 4
Results………………………….…….………………….…....Slide 6
Reflection Statement……………………………..……..Slide 11
Communication Center Proof……………………….Slide 13
References…………………………………………….…......Slide 15
Rubric………………………………………………………..….Slide 162
Purpose
If circuit components are series-connected in some parts and parallel in others, it’s not possible to apply a single set of rules to every part of that circuit. Instead, identify which parts of that circuit are series and which parts are parallel, then selectively apply series and parallel rules as necessary to determine what is happening (Bird Pg. 64 2012) .
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Subjects to Research
o Calculate voltages, current and resistance in a series, parallel, and series-parallel circuits.
o Understand current division in a parallel network.
o What KVL and KCL stands for. Explain how they work. 4
Results
Series Circuits:
Voltage drops add to equal total voltage.
All components share the same or equal current. Resistances add to equal total resistance.
Parallel Circuits:All components share the same or equal
voltage. Branch currents add to equal total current. Resistances diminish to equal total
resistance (allaboutcircuits.com 2014).
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Robert J. Paynter and B.J. Toby Boydell
Electronics Technology Fundamentals,
Conventional Flow Version, 2e
Fig 1: Image of a series circuit.
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Robert J. Paynter and B.J. Toby Boydell
Electronics Technology Fundamentals,
Conventional Flow Version, 2e
Fig 2: Image of a series-parallel circuit.
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Reflections“Components in an electrical circuit are in
series when they are connected one after the other, so that the same current flows through both of them. Components are in parallel when they are in alternate branches of a circuit. Series and parallel circuits function differently” (Bird Pg. 103 2012). Most people have noticed the differences in electrical circuits . When using some decorative holiday light circuits, if one lamp burns out, the whole string of lamps goes out. Therefore, these lamps are in series. When a light bulb burns out in your house, the other lights stay on. Household wiring is normally in parallel.
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Reflections
In a series circuit, the current stays constant, while the voltage across the circuit is the sum of the voltage drop across each component in the circuit. One can calculate the voltage using Ohm’s law, if the current and resistance of each component is known. Also, the sum of all voltage sources is equal to the sum of all voltage drops, much like the total resistance in the circuit is the sum of the resistances of the individual components (Gussow, Pg. 75 2007).
Electrical resistance is the measurement used to determine the flow of electrical current and how much that flow is impeded. This is a common test used in the troubleshooting of various electronic glitches. The most important thing to remember when testing for resistance is that the power to the item to be tested should always be off.
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ReflectionsThere are two fundamental laws in electrical engineering. They are
Kirchhoff’s Current Law (KCL) and Kirchhoff’s Voltage law (KVL).They are the starting point for analysis of any circuit. KCL says that the current going into a node is equal to the current going out of a node, and KVL states that the sum of the voltage around any loop is equal to zero. Using one or the other form lets you write simultaneous equations for the currents and voltages in a circuit, in order to solve for unknown currents and voltages.
A practical electrical circuit has at least four parts: a source of electromotive force, conductors of a load, and a means of control (a switch). A fixed resistor is one which has a constant resistance value. In a series circuit the current is the same everywhere in the circuit. This means that wherever I try to measure the current, I will obtain the same reading. Each component has an individual Ohm's law Voltage Drop. This means one can calculate the voltage using Ohm's Law if I know the current through the component and the resistance. Kirchhoff’s Voltage Law Applies. This means that the sum of all the voltage sources is equal to the sum of all the voltage drops. The total resistance in the circuit is equal to the sum of the individual resistances. The sum of the power supplied by the source is equal to the sum of the power dissipated in the components (www.allaboutcircuits 2014).
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References
Bird, J. (2003). Electrical circuit theory and technology (Rev. 2nd ed.). Oxford: Newnes.
Gussow, M., & Gussow, M. (2007). Schaum's Outline Of Basic Electricity (2nd ed.). New
York: McGraw-Hill.
Types of Electrical Circuits. (2012, February 13). Retrieved September 12, 2014.
www.youtube.com
Voltage and current. (n.d.). Retrieved October 9, 2014. www.allaboutcircuits.com
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