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

What is Capacitive Reactance?Tolerance reactance definitionThe charge on the capacitor plate in an AC circuit has a hindering effect on the directional moving charge and is represented by the letter Xc.How the capacitive reactance worksWhen the capacitor is connected to the AC power supply, the free charge does not actually pass through the insulating medium between the two poles, but because the voltage between the two plates is changing, when the voltage rises, the charge accumulates on the pl

What is short-circuit Current?Short circuit current definitionShort-circuit current is the current flowing through the power system when an abnormal connection occurs between phase and phase or between phase and ground (or neutral line) during operation. The value can be much greater than the rated current and depends on the electrical distance between the short circuit point and the power supply.Type of short circuit Three-phase short circuit Two-phase short circuit Single to ground short circu

What is an Inductive Ballast?Inductive Ballast definitionInductive Ballast is an iron core inductance coil, the nature of inductance is that when the current in the coil changes, it will cause a change in magnetic flux in the coil, resulting in induced electromotive force, and its direction is opposite to the direction of the current change, thus hindering the current change.Working principle of Inductive BallastWhen the 220V 50Hz AC power supply is applied in the switch closing circuit, the cur

What is an Electronic Ballast?Electronic Ballast DefinitionElectronic Ballast is a kind of Ballast, refers to the use of electronic technology to drive the electric light source, so that it produces the required lighting electronic equipment.Working principle of Electronic BallastThe power supply is converted into a DC power supply after passing through a radio frequency interference (RFI) filter, full wave rectification, and a passive (or active) power factor corrector (PPFC or APFC). Through t

What is a Variable Resistor?Variable resistor definitionResistor whose resistance can be adjusted as needed. It is a common component in electronic circuits that allows current or voltage to be adjusted according to Ohm's law.Basic structure of variable resistorA variable resistor usually has three terminals: two fixed terminals at the end of the resistance track and one removable terminal (cursor). Depending on how the terminals are connected to the circuit, a variable resistor can be used as a

The circuit diagram of protective connecting neutral

What is Electrolytic Capacitor?Capacitor definitionCapacitors are components that store electricity and electrical energy. One conductor is surrounded by another conductor, or the electric field lines emitted by one conductor all terminate in the conduction system of the other conductor.The basic structure of a capacitorWorking principle of capacitorElectrical energy is stored by storing charge on the electrode, usually in conjunction with an inductor to form an LC oscillating circuit. The worki

What is Inductance?Inductance definitionA property of a conductor measured by the ratio of the induced electromotive force or voltage in the conductor to the rate of change of the current that produces it. A constant current produces a stable magnetic field, a changing current (AC) or a fluctuating DC produces a changing magnetic field, which in turn induces electromotive force on a conductor in this magnetic field. The magnitude of the induced electromotive force is proportional to the rate of

The circuit diagram of Rectifier bridge

What is Conductance?Conductivity definitionConductivity is defined as the ability of a substance to allow an electric current to pass through, in Siemens, with the symbol "S".The relationship between Conductance and ResistanceReciprocal to each other, Resistance is the ability of the reaction to hinder the passage of current, electrical conductivity is the reaction of the material to allow the passage of current, the relevant formula is:G=1/RThe relation equation of Ohm's conductivity lawG=I/UCo