12–3 KIRCHHOFF’S CURRENT LAW Consider a junction of three wires, called a node, as shown in Figure 12–9. Information is given concerning the amount and direction of the current in only two of the wires. With this information, however, it is possible to deduce the amount and direction of the unknown current in the third […]
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Direct current fundamentals
Series-parallel circuits and loaded voltage dividers: simplifying series-parallel circuits and kirchhoff’s voltage law
Series-Parallel Circuits and Loaded Voltage Dividers 12–1 SIMPLIFYING SERIES-PARALLEL CIRCUITS Pure series circuits and pure parallel circuits are seldom encountered in the practical applications of electricity and electronics. It is more common to deal with circuits that combine the aspects of both. This chapter will introduce you to seemingly complicated circuit problems that may be […]
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Series-parallel circuits and loaded voltage dividers: simplifying series-parallel circuits and kirchhoff’s voltage law
Series-Parallel Circuits and Loaded Voltage Dividers 12–1 SIMPLIFYING SERIES-PARALLEL CIRCUITS Pure series circuits and pure parallel circuits are seldom encountered in the practical applications of electricity and electronics. It is more common to deal with circuits that combine the aspects of both. This chapter will introduce you to seemingly complicated circuit problems that may be […]
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Parallel circuits : voltage sources in parallel, a practical application—kitchen range heating element, current dividers and summary of parallel circuits
11–4 VOLTAGE SOURCES IN PARALLEL Voltage sources, such as batteries and generators, can be interconnected in a parallel arrangement in order to increase the current output capability. Voltage sources connected in parallel must have the same voltage rating, and care must be taken to match the polarities—positive to positive and negative to negative. Figure 11–11 […]
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Parallel circuits : voltage sources in parallel, a practical application—kitchen range heating element, current dividers and summary of parallel circuits
11–4 VOLTAGE SOURCES IN PARALLEL Voltage sources, such as batteries and generators, can be interconnected in a parallel arrangement in order to increase the current output capability. Voltage sources connected in parallel must have the same voltage rating, and care must be taken to match the polarities—positive to positive and negative to negative. Figure 11–11 […]
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Parallel circuits : the nature of parallel circuits, five methods of computation and power dissipation in parallel circuits
Parallel Circuits 11–1 THE NATURE OF PARALLEL CIRCUITS You should recall that series circuits were defined as having one, and only one, path along which the current can flow. By contrast, a parallel circuit has more than one path through which the current can flow. Figure 11–1 is such a parallel circuit. This is the […]
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Parallel circuits : the nature of parallel circuits, five methods of computation and power dissipation in parallel circuits
Parallel Circuits 11–1 THE NATURE OF PARALLEL CIRCUITS You should recall that series circuits were defined as having one, and only one, path along which the current can flow. By contrast, a parallel circuit has more than one path through which the current can flow. Figure 11–1 is such a parallel circuit. This is the […]
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Series circuits : voltage drop on a line, voltage at an open element, series circuits as voltage dividers, the general voltage divider formula, polarity considerations, ground as a reference point, voltage sources in series and summary of series circuits
10–6 VOLTAGE DROP ON A LINE Why do the lights in a house dim when a motor starts? The question is answered by Ohm’s law and the use of the series circuit principle. The sum of individual voltages equals the total applied voltage. Assume that each wire leading to the house, as illustrated in Figure […]
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Series circuits : voltage drop on a line, voltage at an open element, series circuits as voltage dividers, the general voltage divider formula, polarity considerations, ground as a reference point, voltage sources in series and summary of series circuits
10–6 VOLTAGE DROP ON A LINE Why do the lights in a house dim when a motor starts? The question is answered by Ohm’s law and the use of the series circuit principle. The sum of individual voltages equals the total applied voltage. Assume that each wire leading to the house, as illustrated in Figure […]
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Series circuits : characteristics of series circuits, the voltage drop, resistance and current in series circuits, power consumption in series circuits and calculation of series circuit quantities .
Series Circuits 10–1 CHARACTERISTICS OF SERIES CIRCUITS When any number of devices are connected so that there is only a single circuit path for electrons, the devices are in series. Each device has the same amount of current in it; see Figure 10–1. Christmas tree lights are generally connected in series. For many years such […]
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