How to distinguish the fluorescent lamp of the high frequency ballast
High frequency is 20 ~ 26Khz, Electronic ballast (electricaling), a type of ballast, refers to electronic devices that use electronic technology to drive electric light sources to produce the needed lighting. Corresponding to this is the inductor type ballast (or ballast). Modern increasingly use electronic ballast fluorescent lamp, portable small, even can integrate electronic ballast and tube together, at the same time, the electronic ballast can usually combine functions, the starter and starter can save separate again. Electronic ballasts can also have more functions, such as by improving the current frequency or current waveform (e.g., into a square wave) to improve or eliminate fluorescent lamp flickering phenomenon; It can also be used to make fluorescent lamps use dc power. Some of the shortcomings of the traditional inductive rectifier have been replaced by an increasingly sophisticated electronic ballast.
Fluorescent lamp USES electronic ballast, put directly in the lamp and fluorescent lamp USES inductance ballast, outside alone. Electronic ballast is more electricity than the inductor
High frequency electronic ballast is a kind of advanced than the old ballast ballast, distinguish, advanced old ballast ballast is a core are heavier, and the high frequency electronic ballasts are electronic components, comparatively light, and regular high frequency electronic ballasts have comparative perfect protection circuit, normal use basic no harm to people, and we use electromagnetic range, microwave ovens, computers, mobile phones, high-frequency electronic ballasts stroboscopic is high about several thousand Hertz, due to the effect of persistence of vision of the human eye can't feel, and inductance ballasts stroboscopic only 50 hz, and the computer, TV and so on easy to form a resonance, so the European electrotechnical commission "as early as 1997 prohibited in office with a computer screen to install or use fluorescent lamp inductance ballasts. At present our country has no regulations, energy-saving lamps and high frequency electronic ballasts, harmless to people basic, so I suggest you buy qualified with high frequency electronic ballast of fluorescent lamp, energy-saving lamp, the lamp that shield an eye
The working principle of fluorescent lamp is shown here in detail at http://article.ilighting /article.php/1509. The principle of the lamp that shield an eye here, http://www.china /chinese/zhuanti/zlbg/347827.htm, and authoritative evaluation key content "electric light source experts point out that, to increase the stroboscopic light the number of seconds to tens of thousands of times, the tubes in the glowing at the same time, the high-frequency electronic ballast is likely because of the high frequency oscillation produces electromagnetic radiation, and the current market sales of" the lamp that shield an eye "is lamp, commonly used when the distance is very close to the body, so the radiation can cause great influence on human brain. HuaShuMing, director of the national electric light source quality supervision and inspection center, because the lamp that shield an eye using high frequency electronic ballasts, so it is inevitable electronic radiation problem. Has this aspect of the mandatory national standards, only to achieve this standard, can be considered to be qualified, is basically harmless. But a lot of products on the market at present are not up to standard. The expert reminds: high frequency electronic ballast from the electromagnetic radiation may damage to the brain." Based on these analysis and introduction, as long as we do not buy the lamp that shield an eye will not have the problem of high frequency radiation, and general lighting fluorescent lamp is not necessary to use high frequency rectification technology, also won't use this technology, so it is completely safe, can be at ease buy.
