Three-Phase Electricity Explained

Three-Phase Electricity Explained

In Figure 1 a single load connected to a source constitutes a simple circuit. The source is represented by a winding because all generators have windings in them. Figure 1 A single circuit consisting of a source and a load. Figure 2 illustrates three of these assumed AC circuits near each other. Intentionally, the generators …

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Parallel RLC Circuit: Analysis & Example Problems

parallel-rlc-circuit

In parallel RLC circuits the three basic components are in parallel with each other, and, therefore, all are subject to the same voltage. The current for each branch, however, depends on the impedance of the branch and can be individually determined by employing Ohm’s law. For a parallel RLC circuit, the voltage is common …

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Capacitors in AC Circuits

Capacitors in AC Circuits

When a capacitor is subject to a voltage across its terminals, it starts charging until its charge becomes at the level of the applied voltage. During the time that charging takes place a current flows in the circuit (wires connecting the capacitor to the power source). This current is due to …

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Inductors in AC Circuits

Inductors in AC Circuits

When a coil of wire (an inductor) is connected to DC electricity (Figure 1), a current is building up from zero, making a magnetic field. The wire, itself, is in that field, and therefore, a voltage is generated in it. This generated voltage is in the opposite direction of the …

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Inductors in DC Circuits

Inductors in DC Circuits

Figure 1 illustrates a simple DC circuit consisting of a resistor with which an inductor is added in series. We are interested to see what the effect of this inductor to the circuit is. The effect of an inductor in an electric circuit is always to oppose a change in the …

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Analog & Digital Multimeter

Analog & Digital Multimeter

A basic multimeter can measure the three basic electric values (i.e., voltage, current, and resistance), but more functions can also be included in a multimeter. Initially, there are two types of multimeters, analog and digital. A multimeter is a must-have tool for someone working with electricity and electronics. It is …

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Capacitors in DC Circuits

Capacitors in DC Circuits

A capacitor acts as a storage device to electricity. The amount of storage depends on the capacity of the capacitor. We want to study what happens if a capacitor is included with resistors connected to a DC circuit.  Figure 1a is a simple DC circuit with a resistive load, to which …

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What is Capacitance | Definition & Formula

What is Capacitance

Definition: Capacitance is a property that opposes any change in voltage. A capacitor is a device that temporarily stores an electric charge. A capacitor accepts or returns this charge in order to maintain a constant voltage. Schematic symbols that are used to represent a capacitor are shown in Figure 1. …

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Wire Gauge Sizes | Chart | Circular Mil Area

American-Standard-Wire-Gauge-AWG

Conductors are the pathways that allow electrons to flow through an electrical circuit. Conductors can be made in various shapes and sizes. They can be made from a number of different materials. The most common conductor you will encounter is copper wiring. Copper is an excellent conductor and can be …

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