Free Expert Guides on Power Systems, Circuit Design & Electrical Troubleshooting

Neutral (N)A neutral line, usually denoted by the letter "N", is a wire in an alternating current system whose main function is to provide a return path in the circuit. In a single-phase AC system, the neutral line is usually connected to the reference point of the power supply (usually ground) and together with the live line forms a complete circuit.Features Voltage: The neutral line is usually zero voltage (or very close to zero voltage) relative to ground, although there may be some voltage d

What is Primary Load?Primary load definitionPrimary load refers to those loads that have very high demands on the power supply, and these loads may lead to serious consequences, such as life danger, significant economic losses, production stagnation, etc., if the power is cut off or the power is interrupted. Primary loads usually require a reliable power supply and often require a backup power system to ensure continued operation in the event of a primary power failure.Characteristics of primary

What is a Spike Current?Peak current definitionPeak current refers to the short and strong current peak that suddenly appears at the moment of startup of some electrical equipment or under certain conditions. Peak current usually occurs at the moment when the device is just switched on, at which time the internal circuit of the device may temporarily show a low impedance state, resulting in a sharp rise in current. The peak current has a great influence on the safety and reliability of electrica

Diffusion capacitance definitionDiffused capacitance is a kind of differential capacitance effect of p-n junction when it is positively biased. It is caused by the diffusion process of different types of materials in semiconductor devices such as PN junction or MOSFET, that is, a few carriers in the doped region diffuse to the undoped region to form a space charge region, and finally appear as a capacitance effect.Basic principleWhen the PN junction is forward-biased, carriers (electrons and hol

What are Capacitive Loads?Capacitive loads definiteCapacitive loads are a special type of load in a circuit, used for absorbing and storing electrical energy. Compared with resistive loads, when receiving current, it will cause the voltage to lag and has a greater response to frequency. Capacitive loads have important applications in electronic circuits, power supply systems, as well as in the fields of energy transfer and storage.The following will introduce the definition of capacitive loads a

What is Diversity Factor?Diversity Factor DefinitionDiversity factor is defined as the ratio of the sum of maximum demands of individual loads to the simultaneous maximum demand of the system.Importance of Diversity FactorA high diversity factor means that a smaller electrical source can serve more loads, making it commercially viable.Peak Load TimingDifferent types of loads (domestic, commercial, industrial, etc.) have peak demands at different times, which helps in managing the overall load on

Another important property in AC electronic circuits, besides resistance and inductance, is capacitance. Capacitance is measured in units. The unit of capacitance is the farad. While inductance is represented in a circuit by a coil, capacitance is represented by a capacitor. In its most basic form, the capacitor is constructed of two parallel plates separated by a nonconductor, called a dielectric. In an electrical circuit, a capacitor serves as a reservoir or storehouse for electricity.Capacita

Lenz's Law, named after the Russian physicist Heinrich Lenz (1804-1865), is a fundamental principle in electromagnetism. It states that the direction of the induced electromotive force (emf) in a closed conducting loop always opposes the change in magnetic flux that caused it. This means that the induced current creates a magnetic field that opposes the initial change in magnetic flux, following the principles of conservation of energy.Understanding Lenz's Law allows us to appreciate the science

Here's a good wayto define electromagnetism -Electromagnetism is a branch of physics involving the study of the electromagnetic force, a type of physical interaction that occurs between electrically charged particles.The electromagnetic force is carried by electromagnetic fields composed of electric fields and magnetic fields, and it is responsible for electromagnetic radiation such as light.Who Discovered Electromagnetism?In 1820, the Danish physicist, Hans Christian Oersted, discovered that th

What is a Multimeter?A multimeter (MM) is essential for those working with electronics or electrical systems. It is a versatile instrument that combines several measurement functions into one unit, making it indispensable for electricians, technicians, and even DIY enthusiasts. This article will explore a multimeter's features, types of multimeters, and useswhile answering some common questions about this indispensable tool.Multimeters come in two primary forms: digital (DMMs) and analog multime