Skip to main content. Homepage Header Search box Search. Do the twist. Choose 3 for 3. Only use bulbs labeled as three-way on three-way sockets.
Only use bulbs labeled as dimmable on dimmer switches. Check your controls. Give them air. As there is a slight delay in the transfer of UV energy, the light produced by the CFL start off dim and becomes brighter with time.
Compact fluorescent bulbs contain small quantities of mercury. As a CFL is used, up to 60 per cent of the mercury inside the bulb can be bound to the fluorescent coating on the glass. Overall the health risks are very low due to the small amount of mercury present. Most CHLs contain fewer than 5 mg of mercury. As a comparison, this amount is about the same as the amount of ink found on the tip of a ballpoint pen.
Only very small amounts of mercury are found as fumes in CFLs and there is very little risk to healthy humans of any age. When a CFL is broken, the mercury fumes are released and disperse rapidly.
This further reduces the likelihood of any significant exposure to mercury. Studies have shown that if a CFL breaks the mercury levels dissipate quickly when the room is ventilated. By the time the room is cleared and clean-up materials are gathered, the small amount of mercury in the fumes will have diluted enough that it will no longer pose a health risk.
Selected metropolitan businesses and local councils have hazardous goods recycling collection points external sites. Some local government councils have installed special collection centres to dispose of CFLs. These specialised collection stations allow for the easy disposal of:. Contact your local government authority external site to confirm if a program is in place in your community.
Most metropolitan rubbish collection bins now send items in green bins to landfill and in the yellow-topped bins to recycling centres. Do not place CFLs in your household recycling bin for collection these are usually yellow-topped bins. As CFLs can break during transport and contaminate other recyclable items they are not considered appropriate for the recycle bins that are supplied for individual households. We all have witnessed the era when light bulbs were replaced by a better alternate known as Compact Fluorescent Lamp CFL.
A CFL works in an energy efficient way. It is also known as compact fluorescent light, energy-saving light, and compact fluorescent tube. The CFL was initially designed to replace the incandescent lamp in terms of its compactness as well as energy efficiency. A CFL uses vacuum pipe which is principle wise same to the strip lamps commonly known as Tube light.
Tube has two electrodes on both ends which is treated with Barium. These accelerated electrons strike Mercury and Argon atoms which in turn results in the arise of a low temperature plasma. This process initiates the radiation of Mercury in Ultra violet form.
This tube is fed with AC power supply which facilitate the changing functionality of Anode and Cathode. The CFL also consists a switched mode converter. It functions on a very high frequency and acts as a replacement of ballast choke and starter assembly. Though being compact, it efficiently performs the requirements as a choke. The circuit of CFL is explained in succeeding paragraphs. The starter segment comprise of a Diac, C2, D1 and R6.
The components D3, R3, D2 and R1 work as a protection circuit and the rest as normal operation circuit. You have to keep the following terminology in mind :. As soon as the operation starts, the D1 diode blocks the whole section.
Capacitor C2 is also discharged after charged to its full value each time the transistor Q2 operates.
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