What is electrical engineering? This broad field covers control systems, telecommunications and signal processing, and can include elements of computer science and electronic engineering. Though the topic is vast, Bright Hub’s Electrical Engineering Channel is here to help with articles on everything from basic electrical wiring tips, and safety rules to the latest telecommunication trends.
Electrical Engineers use electricity to generate, transmit, process, store and convert energy and information. As you can imagine, this field is growing and expanding every day to keep up with the rate we consume energy. New materials, tools and systems are constantly being designed. New careers in electrical engineering are emerging every day. Our writers are professionals in the field and have the information you need from info on basic electrical principles such as Thevenin’s network theorem or electronic engineering facts.
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A DC series motor converts electrical energy to mechanical energy. Its principle of operation is based on a simple electromagnetic law that states that when a magnetic field is created around current carrying conductor and interacts with an external field, rotational motion is generated.
The proposed mini-electricity generator project is very simple to build and can be used by students as a school project, or just for hobbyists. The set up can be used to charge a battery with electricity produced from wind power.
You may be a good bicycle rider, but wouldn’t you love to know how fast you really ride? The article presents an easy electronic circuit which can be integrated to your existing bicycle dynamo to get an instant LED illuminated speed indications, the moment you start peddling.
An electrical engineer may come across precarious situations where joining electrical wires efficiently becomes an issue. Moreover, depending upon the criticality, selecting the type of connection also becomes crucial. Here we discuss a few important methods of implementing reliable cable joints.
The article describes the science behind the little grey thing that pumps up your cell phone’s juices, i.e the lithium-ion battery. Although they cost more than the other rechargeable batteries, Li-ions are also finding applications in the military and aeronautics.
An ideal Pulse Width Modulation circuit using the IC 555 is explained in the article. Here the configuration shows how the above mode of the IC can be used for controlling DC motor speeds; however the design can be actually used for a number of different relevant application purposes.
Shunt DC Motors operate on direct current. As such, the field windings and armature are connected in a parallel combination, and in electrical terminology a parallel combination is known as a shunt. This type of motor is a “shunt-wound” DC Motor and the type of winding is called a shunt winding.
A built-in oscillator stage in the IC 4060 chip makes it truly versatile and applicable for numerous different applications. It can be easily configured as an accurate timer, oscillator, flasher, clock generator, or sequential timer, and that’s just the beginning of its usefulness.
Electrical system grounding is directly related to human safety. Electrical systems are grounded, or earthed, in order to obtain a low resistance path for the dissipation of current into the earth. Earthing should be measured routinely to maintain the resistance below a required value.
This IC is basically made up of two D-type flip flop modules and set/reset asynchronous toggle inputs. As the name suggests, the IC is primarily used as a bistable for toggling the output stage of a particular circuit, and it is fundamentally incorporated in most electronic circuits.
Building virtually any electronic circuit from these small signal transistors and their complementary pairs may be feasible. This goes to show just how versatile and important these devices can be.
Rotating machines tend to vibrate, so vibration analysis on a regular basis is needed to predict the operational health of equipment and provide fault analysis. It’s the job of the maintenance engineer to provide a preventive maintenance program, including using the concepts of vibration analysis.
The standard telecommunications model is comprised of four telecommunication layers. Here we will look at and discuss the role and working of each component layer.
Almost 90 % of all medium power electronic gadgets incorporate 2N3055 transistors in their output stages – probably enough to prove the high versatility of the device. The article provides you with all the necessary details about this important electronic active component.
The GE Amplidyne 115 to 250 Volt Motor Generator is an electromechanical amplifier that was invented by Ernst Alexanderson during World War II. It consists of an AC motor that drives a DC generator with some alterations to enhance the available power gain.
The IPCODE (IP code) is used to stipulate the environmental protection applicable for specific equipment enclosures.
Thermocouples are non-adjustable measuring devices, so we cannot calibrate them. However, we can validate functioning for a range of temperature through using a thermocouple calibration bath.
Electrical safety is an important issue in working areas where water is used as a base element. We need to follow some precautions and instructions while enjoying swimming in a pool, operating a boat, or working around a dock.
The magnetic properties of the nuclei of atoms can be used to yield chemical information. The nuclear magnetic resonance phenomenon is the basis of Magnetic Resonance Imaging, a technique extensively used in the medical radiology field.
The FTC recently extended the deadline for changing to the Lighting Facts packaging label to January 1, 2012. The label is supposed to make it easier for consumers to understand the energy costs of similar bulbs, but our investigation finds the new labels more notable for what they don’t tell us.
