Why do we use a starter in a tubelight?

Answer 1

A tube-light (or florescent light as we call them in the States) uses a small amount of mercury to ionize the gas in the tube. The tube has two pins on each end. On the inside of the tube is a small element (very similar to a element in a regular light bulb). When circuit is complete, one pin of one element is connected to one side of the line and the other side of the line is connected to one pin of the other element. The starter is connected to the other pins of each element.

When power is first applied, the starter is a closed circuit passing current through both elements. This heats the gas in the tube and causes the mercury to vaporize. After a short time, the starter opens and the current now flows through the ionized gas in the tube.

Answer 2

starters are used in several types of fluorescent lights. The starter is there to help the lamp light. When voltage is applied to the fluorescent lamp, here's what happens:

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. The tube lights.
Since the lighted fluorescent tube has a low resistance, the ballast now serves as a current limiter.
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. The fluorescent starter is a time-delay switch that opens after a second or two. When it opens, the voltage across the tube allows a stream of electrons to flow across the tube and ionize the mercury vapor.





Without the starter, a steady stream of electrons is never created between the two filaments, and the lamp flickers. Without the ballast, the arc is a short circuit between the filaments, and this short circuit contains a lot of current. The current either vaporizes the filaments or causes the bulb to explode.

Answer 3

The function of a starter is to create a high voltage across the tube light so that the gases inside the tube get ionized. Now the starter does this by the way of making and breaking the circuit repeatedly in a very short period of time. And since we know whenever a circuit makes of break for a split second a very potential difference is created at the point of contacts. This high potential difference is used to ionize the gases in the tube light.

Answer 4

Because we can't use it in bulb.