Electrical Engineering Guides

Illumination Engineering

Hospital Lighting: Design, Requirements, and Types

Hospital lighting is an essential aspect of healthcare facilities that affect the well-being and performance of patients, staff, and visitors. Hospital lighting design should consider the specific needs and preferences of different spaces and users, as well as the energy efficiency and sustainabilit

By Electrical4u 03/16, 2024
Illumination Engineering

Arc Lamp: What is it?

What is an Arc Lamp? An arc lamp is a type of electric lamp which produces light by creating an arc in the space between two electrodes when electrical energy is supplied. In the early 1800s, Sir Humphry Davy invented the first arc lamp. In that first lamp, two electrodes of carbon were used. The ar

By Electrical4u 03/16, 2024
Illumination Engineering

Tube Light Connection Circuit & Wiring Diagram

Required Wiring Components A tube light is not connected in the supply main directly. Although it operates at 230 V, 50 Hz, some auxiliary electrical components are used to insert in this installation to support the tube light operational principle. The total electrical components for single tube li

By Electrical4u 03/16, 2024
Illumination Engineering

Working Principle of a Tube Light

What is Tube Light? Tube shaped fluorescent lamp is termed as tube light. Tube light is a lamp that works on low pressure mercury vapor discharge phenomenon and converts ultra violate ray into visible ray with the help of phosphor coated inside glass tube. Material Used Inside the Tube Light The mat

By Electrical4u 03/16, 2024
Illumination Engineering

Construction of Fluorescent Lamp

A fluorescent tube light consists of a lime glass tube drop of mercury argon gas phosphor coating electrode coils mounting assemblies aluminum cap Total set up of a lamp requires two bases and electromagnetic ballast or choke coil with a starter. The electrode mount assemblies are at both the ends o

By Electrical4u 03/16, 2024
Illumination Engineering

Electronic Ballast: Working Principle & Circuit Diagram

What is Electronic Ballast? An electronic ballast (or electrical ballast) is a device that controls the starting voltage and the operating currents of lighting devices. It does this through the principle of electrical gas discharge . An electronic ballast will convert power frequency to a very high

By Electrical4u 03/16, 2024
Illumination Engineering

Mercury Vapour Lamp

In case of fluorescent lamp the mercury vapour pressure is maintained at lower level such that 60% of the total input energy gets converted into 253.7 nm single line. Again transition of the electrons requires least amount of input energy from a colliding electron. As pressure increases the chance o

By Electrical4u 03/16, 2024
Illumination Engineering

Fluorescent Lamp and Working Principle of Fluorescent Lamp

What is Fluorescent Lamp? A fluorescent lamp is a low weight mercury vapour lamp that uses fluorescence to deliver visible light. An electric current in the gas energizes mercury vapor which delivers ultraviolet radiation through discharge process and the ultraviolet radiation causes the phosphor co

By Electrical4u 03/16, 2024
Illumination Engineering

How Phosphor Coating Works in Fluorescent Lamps

Fluorescent lamps are widely used as light sources in various applications, such as homes, offices, schools, and industries. They are more energy-efficient and durable than incandescent lamps , which produce light by heating a metal filament. Fluorescent lamps produce light by exciting a gas mixture

By Electrical4u 03/16, 2024
Illumination Engineering

Radiance and Luminance

The radiant flux emitted from a point source in a certain direction per unit solid angle per unit projected area perpendicular to the specified direction is called radiance. Radiance is denoted by L e,λ and it is equal to the double derivative of radiant flux with respect to projected surface area A

By Electrical4u 03/16, 2024
Basic Electrical

Nominal Voltage and AC and DC Standards

Nominal voltage (NV) is a vital aspect of electrical systems, serving as a reference point for designing, manufacturing, and testing equipment. In addition, it influences electrical systems' performance, efficiency, and safety, with voltage regulation ensuring that voltage (V) levels remain within a

By The Electricity Forum 03/16, 2024
Illumination Engineering

Irradiance and Illuminance

Irradiance is the radiant flux received by the detector area. The unit of irradiance is W/m 2 . Irradiance is denoted by E e,λ , φ s is the received radiant flux on the detector surface and A D is the detector area or surface. Irradiance always follows the Inverse Square Law. Suppose from a point so

By Electrical4u 03/16, 2024

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

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Hospital Lighting: Design, Requirements, and Types

Arc Lamp: What is it?

Tube Light Connection Circuit & Wiring Diagram

Working Principle of a Tube Light

Construction of Fluorescent Lamp

Electronic Ballast: Working Principle & Circuit Diagram

Mercury Vapour Lamp

Fluorescent Lamp and Working Principle of Fluorescent Lamp

How Phosphor Coating Works in Fluorescent Lamps

Radiance and Luminance

Nominal Voltage and AC and DC Standards

Irradiance and Illuminance

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