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

What is an Uninterruptible Power Supply?Uninterruptible power supply definitionAn uninterruptible power supply is a device capable of providing a continuous power supply with the primary purpose of protecting critical loads from grid outages, voltage fluctuations, frequency changes, and other power quality issues.The basic components of uninterruptible power supply: Battery pack: provides backup power to the UPS. When the mains power fails, the battery pack can supply power to the load. Charger:

What is a Optical Pyrometer ?Optical Pyrometer DefinitionAn optical pyrometer is a device that measures the temperature of glowing objects by comparing their brightness to a reference light.ConstructionIt is a simple device with a lens, lamp, colored glass, eyepiece, battery, ammeter, and rheostat.Working PrincipleIt operates by matching the brightness of the lamp filament to the brightness of the hot object.CalibrationThe temperature is determined by the ammeter reading when the filament and th

What is a UPS (Uninterruptible Power Supply)?AnUninterruptible Power Supply(UPS) is defined as a piece of electrical equipment which can be used as an immediate power source to the connected load when there is a failure in the main input power source.In a UPS, the energy is generally stored in flywheels, batteries, or super capacitors. When compared to other immediate power supply system, UPS have the advantage of immediate protection against the input power interruptions.It has very short on-ba

The design and advantages of a novel light emitting diode (LED) bandwidth extension technique, based on the adoption of negative impedance converters (NICs), are discussed in the context of visible light communication systems. The design principles of the proposed negative impedance converter are introduced, with analytical derivations of the impedance frequency behaviour and the circuit performance frequency limitations. A two-transistor circuit is designed to generate a negative capacitance ov