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Without an inductor in series with the tube, the plasma in the tube would simply short-out the service wires. That would always cause the circuit's protective fuse to blow - or its circuit breaker to trip - to cut off the supply of current to the tube. If that happened the tube light would never be able to perform its intended purpose, which is to continue running - and giving out a continuous light - for long periods of time.
So a high-inductance choke must be used in circuit with the starter and the tube for two reasons:
- firstly the choke generates a high voltage pulse across the tube when the starter's contacts open. That pulse causes the gas in the tube to ionise and become a low-resistance plasma
and
- secondly, because it is wired in series with the tube, the choke greatly reduces the current drawn by the tube once it contains the low-resistance plasma.
The starter is a special kind of switch: its contacts are made of a metal alloy which heats up and bends soon after a voltage is applied, causing the switch contacts to open.
What else can I help you with?
What is the Function of light bulb in an electric circuit?
The function of a light bulb in an electric circuit is that it turns electrical energy into light.
What happens to a light bulb when put in series with a inductor?
When you put a light bulb in series with a inductor, the inductive reactance of the inductor reduces the current available to the light bulb, making it less bright. For this effect to be noticed, however, you need a very large inductor. To cut the current in a 60W bulb at 120VAC/60Hz by one half, for instance, you need an inductor around 0.6 henrys.
Examples of circuit diagram of transfer function?
An battery to light and back or Wires to TV and back.
Why capacitor is used in tube light circuit?
For power factor improvement so that the KVA demand is reduced.
What is the function of a capacitor in a fluorescent light fitting?
A capacitor is used to improve the power factor of the lamp.More detailsTo prevent the lamp from taking too much current a fluorescent lamp has to have a choke, which has magnetic inductance. The inductance has a negative impact on the power factor of the (the ratio between apparent power and real power taken by the lamp) - i.e. the power factor is reduced - so a capacitor is used to compensate for the inductance by improving the power factor so that it is closer to the ideal value of 1.Basically the inductor with the capacitor smooths out the voltage or current.
Which circuit can decrease the fluorescent brightness to the minimum amount?
You need to purchase a Fluorescent dimmer switch, no circuit can dim the brightness of the light safely.
What is the main function of phosphor in the fluorescent?
The main function of phosphor in fluorescent lighting is to convert invisible ultraviolet light into visible white light. When excited by ultraviolet light, phosphor emits visible light of various colors depending on its composition, producing the illumination we see in fluorescent lamps.
What is the Function of light bulb in an electric circuit?
The function of a light bulb in an electric circuit is that it turns electrical energy into light.
Can you use incandescent and fluorescent light bulbs in the same electric circuit?
Yes, that will not cause a problem.
What is the purpose of a fluorescent light ballast and how does it function in the operation of fluorescent lighting systems?
The purpose of a fluorescent light ballast is to regulate the electrical current flowing through the fluorescent light tubes. It provides the initial surge of electricity needed to start the light and then regulates the current to keep the light glowing steadily. The ballast also helps prevent flickering and ensures the longevity of the fluorescent tubes.
What is the function of light detector circuit?
a: its function is to detect a change of light withing its perimeter
Working of choke in tubelight?
The choke works as an inductor(filter) induced 850V to 1100V in starting,by strarter make and break of the circuit. After glowing the tube light choke work as inductance and provide 110v to circuit, here the function of starter comes. It helps the chocke to brek from the circuit and to 110v from 850V.thankining U "Nikki"
What is the best way to perform a fluorescent light replacement in a home or office setting?
To replace a fluorescent light in a home or office setting, follow these steps: Turn off the power to the light fixture at the circuit breaker. Remove the cover or diffuser from the fixture. Gently twist and remove the old fluorescent tube. Insert the new fluorescent tube, making sure it is securely in place. Replace the cover or diffuser. Turn the power back on at the circuit breaker and test the light.
Function of the phosphor in fluorescent?
The phosphor in a fluorescent light bulb converts ultraviolet light emitted by the mercury vapor into visible light. This process creates the bright, white light that we see when a fluorescent bulb is turned on.
How to remove a fluorescent light fixture?
To remove a fluorescent light fixture, first turn off the power at the circuit breaker. Then, remove the cover or diffuser, and unscrew the fixture from the ceiling or wall. Disconnect the wires and carefully lower the fixture down. Be sure to dispose of the fluorescent tubes properly.
What size amp circuit breaker do you use on a 55 watt fluorescent light?
A 55 watt fluorescent light only pulls 0.4 amps. Lights can be installed on a 15 amp breaker using 14/2 wire. A maximum of 1440 watts is all that is allowed on a 15 amp circuit.
Why is mercury in fluorescent bulbs?
Mercury is used in fluorescent bulbs as it helps produce ultraviolet light when electricity passes through the bulb. This UV light excites phosphor coating inside the bulb, which then emits visible light. While the amount of mercury used in fluorescent bulbs is small, it is essential for their function and energy efficiency.
