Miscellaneous

How the tube light circuit is connected?

How the tube light circuit is connected?

A wire already connects port 2 and pin 1 of the terminal 2. From another terminal of the switch the wire is carried out up to tube light set up and connected to port 1. One terminal of choke or ballast is connected to port 1 and another terminal is connected to pin 1 of terminal 1.

Which wire is used in tube light?

Pvc Conductor Type: Armoured Tubelight Wire, Crossectional Size: 1.5 Sqmm, Thickness: 1-2 Mm

Wire Material PVC
Conductor Type Armoured
Type Led Accessories
Crossectional Size 1.5 Sqmm
Thickness 1-2 mm

What is the principle of operation in a tube light?

“ As the name indicates, the tube-shaped fluorescent lamp is called tube light.” It works on the principle of low-pressure mercury vapor discharge phenomenon, which converts UV rays into visible rays with the help of phosphor-coated inside the tube.

Why capacitor is used in tube light?

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Fluorescent lamps form an inductive load on the AC mains supply. As a result large installations of such lamps suffer a poor power factor and resultant voltage drop. Adding a capacitor to each lamp corrects the power factor bringing it back close to unity (1.0).

How does a fluorescent light circuit work?

A fluorescent lamp generates light from collisions in a hot gas (‘plasma’) of free accelerated electrons with atoms– typically mercury – in which electrons are bumped up to higher energy levels and then fall back while emitting at two UV emission lines (254 nm and 185 nm).

What is ballast in tube light?

In a fluorescent lighting system, the ballast regulates the current to the lamps and provides sufficient voltage to start the lamps. Once the arc is established, the ballast quickly reduces the voltage and regulates the electric current to produce a steady light output.

Why choke is connected in the circuit of a fluorescent tube?

A choke coil has inductive reactance which does not cause energy dissipation. It is also much easier to control AC mains using inductors such as the choke coil. This makes a fluorescent tube much more efficient in terms of power used and light produced than normal incandescent bulbs.

Is starter a capacitor?

A motor capacitor, such as a start capacitor or run capacitor (including a dual run capacitor) is an electrical capacitor that alters the current to one or more windings of a single-phase alternating-current induction motor to create a rotating magnetic field.

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Can a tube light work without starter?

When you turn on a fluorescent tube, the starter is a closed switch. The filaments at the ends of the tube are heated by electricity, and they create a cloud of electrons inside the tube. Without the starter, a steady stream of electrons is never created between the two filaments, and the lamp flickers.

What voltage do fluorescent tubes use?

Fluorescent lamps use a ballast which transforms line voltage to a voltage to start up and operate the lamp(s). Newer fluorescent ballasts are usually rated for both 120 volts and 277 volts. Some are rated for only 120 volts, others for only 277 volts (used in commercial environments).

Why does a fluorescent circuit need a starter?

The starter (which is simply a timed switch) allows current to flow through the filaments at the ends of the tube. The current causes the starter’s contacts to heat up and open, thus interrupting the flow of current. Since the lighted fluorescent tube has a low resistance, the ballast now serves as a current limiter.

What is 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

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How does a fluorescent tube light become electrically conductive?

When we connect the AC supply voltage to the circuit, then the starter act like short circuited and current flow through those filament (located at the first and second end of the tube light) and the filament generate heat and it ionized the gas (mercury vapor) in the fluorescent tube lamp. So the gas becomes electrically conductive medium.

How does a tube light work on power supply?

The tube light does not work directly on power supply. It needs some auxiliary components to work. Ballast: It may be electromagnetic ballast or electronic ballast. Starter: The starter is a small neon glow up lamp that contains a fixed contact, a bimetallic strip and a small capacitor.

How does the choke work in fluorescent tube lights?

This principle of the choke is exploited in lighting a fluorescent tube light. When an AC voltage is applied to a tube light fixture, the voltage passes through the choke, the starter, and the filaments of the tube. The filaments light up and instantly warm up the tube. The starter is made up of a discharbe bulb with two electrodes next to it.