How to judge the reliability of the bottom power factor from the ballasted fluorescent lamp

There is an essential difference in the principle of luminescence: LED lamps --- semiconductor light-emitting diodes electroluminescent; Fluorescent lamps --- gas discharge rays excite phosphors on the tube wall to emit light. The two are two fundamentally different things.

The term self-ballasted is very non-standard and does not apply to LEDs.

Due to the structural characteristics and luminous principle of fluorescent lamps and other gas discharge lamps, they usually must be lit at high pressure and maintained at low pressure after lighting. However, there is a type of low-power fluorescent lamp that has undergone structural transformation to eliminate the need for formal ballast, which is commonly known in the industry as self-ballast.

LED does not need high-voltage start-up, can only work in the DC circuit, especially for current control has much higher requirements (directly related to the life of LED), and its supporting device should be a constant current source. However, there are many stable voltage power supplies, simple constant current circuits, and divider-voltage current limiting methods in the market. The development of LED technology has not yet reached this height, and if the so-called LED self-rectification appears, the quality must be mysterious.

Not a concept you say.

LED lamps are semiconductor devices used as light sources, and are powered by corresponding power adapters. Energy saving is achieved through high luminous efficiency.

Self-ballasted is directly connected to the power supply on it, otherwise a ballast is required.

You have to understand the role of the ballast, the ballast is a trapezoidal thing on the shell of the old generation of lamps, which is no longer visible.

Self-ballasted lamps are self-ballasted fluorescent lamps, which are defined as follows: fluorescent lamps that contain a lamp head, a ballast and a lamp tube, and make them one, which are not detachable without damaging their structure.

There are generally three parts of the model: the first part is the self-balancing fluorescent lamp (YPZ) for general lighting, the second part is the rated voltage and rated current, and the third part is the structural form of the lamp (U-type and S-type (spiral)).

For example, the 220V13W3U lamp is represented as: YPZ220 13-3U. Hope it helps!

The electric light source for gas discharge requires a relatively stable current and generally requires an external ballast. The bulb, which is generally called self-ballasting, is a filament set inside the blister as a flow limiting device, and some are called self-ballasted high-pressure mercury lamps, which is the case.

I'll show you:

If the luminous flux of your 26W lamp is 2340lm, that is, the luminous efficiency is 90lm w, then the power factor is changed, the parameters are as follows:

w= light effect= The other differences are not big, that is, the technical indicators of turning off the lights on your day have dropped.

At the same time your follow-up question:

In traditional self-ballasted fluorescent lamps, the power of the lamp and the ballast do not match, and many of the self-ballasted drivers are unstable, so this nominal value deviates greatly

There is no change to the luminaire, except that the input current is doubled.

Tri-color energy-saving lamps are coated with pure rare earth tri-color phosphors, which has high luminous efficiency and high color rendering index. The essence of trichromatic energy-saving lamps and self-ballasted fluorescent lamps is the same. It's just that the coating used is different.

Generally speaking, the energy-saving lamps with high power on the market are higher. So the same ** is cost-effective to buy a lot of power.

Self-ballasted fluorescent lamp, the efficiency is 50-60lm w, the three-primary color double-ended straight tube fluorescent lamp, is also about the same, the highest is 70-80lm w, generally 50-60lm w, LED lamp 110lm w, the latest technology (blue) 300lm w

The normal power of T8 fluorescent lamp is about 33-35W, and the initial purchase cost is low.

The best product of T5 fluorescent lamp is about 16W, and the initial purchase cost is relatively low.

The best product of LED daily fluorescent lamp is also around 14W, but the initial purchase cost is expensive.

Therefore, it is recommended that it is best to choose the most suitable T5 fluorescent lamp.

Generally speaking, T8LED tubes are basically built-in power supplies, which can directly replace the original T8 fluorescent tubes; The T5 lamps are mostly integrated, which needs to be replaced as a whole. In the selection, you should consider the location of your actual installation and use.

If the relationship between incandescent lamps and energy-saving lamps is compared to a seesaw, the incandescent lamp "sinks", and the energy-saving lamp should "rise", but the fact is that the call for incandescent lamps to leave classes is getting higher and higher, and the energy-saving lamp market is a bit "not to follow", and consumers are not very buying. Not long ago, the General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China inspected several energy-saving lamp companies. According to the Jiangxi Provincial Bureau of Quality Supervision announced the quality supervision and random inspection of electronic energy-saving lamp products on the market, nearly eighty percent of energy-saving lamps are unqualified.

The results of the spot check show that the main problems of electronic energy-saving lamp products are: first, the power deviation of the lamp is large; the second is that the harmonic current limit is unqualified; third, the mechanical strength is not up to standard; Fourth, the cross-sectional area of the external lead of the product is small. Spot checks on the energy-saving lamp market in other parts of the country show that there is still a lot of homework to be done to replace the eliminated incandescent lamps. But even if it is a qualified energy-saving lamp, its status is not smooth, and the promotion of energy-saving lamps is a bit passive.

Among them, the high ** has become the biggest obstacle. Some data show that if all households in China replace incandescent lamps with energy-saving lamps, then the total annual electricity saving of household lighting alone in the country is close to the annual power generation of the Three Gorges Reservoir. Despite such a good power-saving effect, not most of the new residential users buy energy-saving lamps, and the old residential users who are still using incandescent lamps are also reluctant to abandon incandescent lamps due to the high cost of line renovation and cumbersome processes.

The reporter found in a number of lighting stores in Beijing that most of the lighting counters were mostly energy-saving lamps, and some non-energy-saving incandescent lamps were placed in the corners. Several brands say that apart from some luxury crystal lamps that still use incandescent lamps, they rarely sell non-energy-efficient lamps now. However, many consumers said that they did not know how much electricity energy-saving lamps could save, but it was clear that the ** of energy-saving lamps was much higher than that of incandescent lamps.

Coupled with the cost of renovating old lines and replacing interfaces, they really can't simply say "goodbye" to incandescent lamps. Some consumers said that the most headache for them is that there are hundreds of energy-saving lamp brands on the market, the quality is uneven, and some inferior goods are scrapped after a long time, and the so-called "energy-saving lamp" is even less expensive than incandescent lamps. The reporter learned from the energy-saving monitoring department that at present, the penetration rate of energy-saving lamps in new communities is increasing year by year, but some old communities are not optimistic.

Relevant people also believe that although the new community or new public buildings can be in accordance with the design specifications, the use of energy-saving equipment, but the use rate of energy-saving lamps in old communities and old office buildings is not high, which is the bottleneck of the future promotion of energy-saving lamps. At the same time, industry insiders suggest that the best quality of energy-saving lamps is determined by its high cost, in addition to vigorously promoting green lighting, it can also be unified by the procurement of high-quality products, free gifts to low-income families, or the production and sales of energy-saving lamps to develop subsidy policies, so that it will decline. This is not only conducive to the promotion of energy-saving lamps, but also can squeeze inferior products out of the market.

Many businesses also suggest that the relevant departments should introduce relevant regulations to standardize the quality standards of energy-saving lamps and increase the supervision of energy-saving lamp manufacturers.

There is a unified national mandatory standard.