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 of lamp tube. This electrode … Read more

History of Fluorescent Lamp

In 1852, Sir George Stokes had discovered transformation of the ultra violate ray radiation into visible radiation. From this time to 1920 various kinds of experiments had been done to develop the low and high pressure electric discharges in the mercury and sodium vapor. But all those circuitry developed were inefficient to transform the ultra … Read more

Gas Discharge Phenomenon in Fluorescent Lamp

When full voltage appears across the anode and cathode, an electric field is set up from anode to cathode. The flow of the electricity through a gas inside the tube or bulb is called discharge. The electrons drift from cathode to anode, and positive ions drift from anode to cathode. We can calculate the total … Read more

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 coating of the lamp inner wall to radiate visible light. A … Read more

Why is Fluorescent Lamp Phosphor Coated?

Fluorescent Lamp is still the mostly used light source in our day to day life. It illuminates the very eye pleasant light. For producing eye pleasant light phosphor is used inside of the fluorescent lamp. It is used to convert ultraviolet ray radiation into visible radiation. Previously zinc beryllium silicate was used as the basic … Read more

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 of multiple collisions gets increased. A … Read more

HID Ballast Circuit and Principle

What is an HID Ballast? A HID ballast is a device that is used to control the voltage and arc current of High Intensity Discharge lamps during their operation. Classification of HID Ballast HID ballasts are classified into four categories: Reactor ballast Lag ballast Regulator ballast Auto regulator ballast A short description of each category … Read more

Electronic Ballast

What is an Electronic Ballast? An electronic ballast (or electrical ballast) is a device which 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 frequency to initialize the gas discharge process in … Read more

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 materials used to build … Read more

Wiring Diagram for a Single Tube Light Circuit

Required Wiring Components 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 light installation are Choke: it is electromagnetic ballast or … Read more