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

A capacitor is a device that stores electric charge and can release it when needed. Capacitors are widely used in various electrical and electronic circuits, such as those in heating and air conditioning systems, power supplies, radios, and computers. Capacitors can have different shapes, sizes, and materials, but they all have two terminals that connect to a circuit.Sometimes, capacitors can fail or degrade over time, affecting the performance of the circuit. Therefore, it is important to know

When inductors are connected in series, the equivalent inductance of the combination will be the sum of all individual inductors’ inductance. This is just like the equivalent resistance of series-connected resistors.But in the case of inductors, we sometimes have to consider the effect of mutual inductance between the inductors.Then, to calculate the inductance of each inductor, we consider both the self-inductance and mutual inductance of the inductor.The mutual inductance will be either added

Definition of Mutual inductionMutual induction is a phenomenon when a coil gets induced in EMF across it due to rate of change current in adjacent coil in such a way that the flux of one coil current gets linkage of another coil.Definition of Mutual InductanceMutual Inductance is the ratio between induced emf across a coil to the rate of change of current of another adjacent coil in such a way that two coils are in possibility of flux linkage.Mutual InductionWhenever there is a time varying curr

Self InductionSelf induction is a phenomenon by which a changing electric current produces an induced emf across the coil itself.Self InductanceSelf inductance is the ratio of induced electromotive force (EMF) across a coil to the rate of change of current through the coil. We denote self inductance or coefficient of with English letter L. Its unit is Henry (H).Since, the induced emf (E) is proportional to the current changing rate, we can write,But the actual equation isWhy there is Minus (-) s

What is an Inductor?An inductor (also known as an electrical inductor) is defined as a two-terminal passive electrical element that stores energy in the form of a magnetic field when electric current flows through it. It is also called a coil, chokes, or reactor.An inductor is simply a coil of wire. It usually consists of a coil of conducting material, typically insulated copper, wrapped into an iron core either of plastic or ferromagnetic material; thus, it is called an iron-core inductor.Induc

What is an Electrical Resistor?A resistor is a passive component in a circuit which provides resistance to the flow of current. There are many different types of resistors. These resistors vary in their construction, power dissipation capacities, and tolerance to various parameters (such as temperature and light). The types of resistors include: Carbon Composition Resistor Thermistor Wire Wound Resistor Metal Film Resistor Carbon Film Resistor Variable Resistor Varistor Light Dependent Resistor

What is a Bleeder Resistor?A bleeder resistor is a standard resistor connected in parallel with the output of a high-voltage power supply circuit for the purpose of discharging the electric charge stored in the power supply’s filter capacitors when the equipment is turned OFF. This is done for safety reasons.If someone accidentally touches during the service of equipment in the OFF state, there may be a chance to get shocked even if the device is in OFF condition. Hence, it is necessary to disch

What is a Ballast Resistor?A ballast resistor is defined as a resistor inserted into a circuit to minimize current. Ballast resistors also help to avoid over-current faults in a circuit. An “electric ballast” is a more general term used to refer to an electrical device used to maintain a circuit’s stability by limiting the value of current and voltage. Electric ballasts can be resistors, capacitors, inductors, or a combination of these.Ballast resistors are able to change resistance with the cur

What is an Electrical Resistor?A resistor (also known as an electrical resistor) is defined as a two-terminal passive electrical element that provides electrical resistance to current flow. Resistance is a measure of the opposition to the flow of current in a resistor. The larger a resistor’s resistance, the greater the barrier against the flow of current. There are many different types of resistors, such as a thermistor.In an electrical and electronic circuit, the primary function of a resistor

What is a Shunt Resistor?A shunt resistor (or shunt) is defined as a device that creates a low resistance path to force most of the electric current through the circuit to flow through this path. In most cases, a shunt resistor is made up of a material having a low-temperature coefficient of resistance, giving it a very low resistance over a wide temperature range.Shunt resistors are commonly used in current measuring devices called “ammeters”. In an ammeter, the shunt resistance is connected in