China has a vast territory, large temperature difference between the north and the south, tight power supply, large voltage fluctuations in the power grid, and low current consumption levels. It is necessary to design and produce electronic ballasts and energy-saving lamps suitable for China's national conditions to promote the development of green lighting. The safety and technical indicators of such electronic ballasts should fully meet the requirements of IEC928, IECO29 and GB15143, GB/T15144, and the price should not be too high. There are fundamental principle obstacles in the low-power factor and capacitor-diode filtering (flow-by-flow circuit) electronic ballast circuits that are commonly used in the domestic market. The former input power factor and harmonics are unqualified; the latter output lamp current The peak ratio is unqualified. Full-parameter qualified inductors - electronic ballasts and active filter wave electronic ballasts, because of the high price, are difficult to popularize. - Only 220V dual-tube active filter products, the ex-factory price is about 100 yuan, and the internal DC voltage is high, the reliability is not high. Electronic ballasts suitable for China's picture should have: 1. High reliability. That is, in the case of 160-250V voltage, the maximum ambient temperature is 40C, it can work continuously; it has slow start, anti-transient interference, abnormal protection function; it is qualified to resist high electromagnetic interference; the damage rate is less than 2% in three years, higher - The file requires a damage rate of no more than 0.3% within five years. 2. The electrical parameters are fully qualified. Class H requires PF>0.9, THD<0.35, 3rd<0.30; Class L is PF>0.99, THD<0.1, 3rd<0.05, lamp current peak ratio <1.7, lumen coefficient>0.93, electrical efficiency (output high frequency power The ratio of the ratio to the input power is >0.9. When the power supply voltage fluctuates by 10%, the corresponding light output fluctuation should be less than 12%. 3. Full-featured (with slow start, anti-transient interference, abnormal protection, FCC is B grade) Factory price: single tube 18-36W is 26-30 yuan; three tubes 18W-36W is 36 yuan -46 yuan, three tubes 18W-36W is 46 yuan - 56 yuan. 4. Guarantee the gross profit of the manufacturer (25-35)% on the basis of the above-mentioned, and have a net profit of (6-10)% in the mass production, and provide the user with a 2-3 year warranty. Low-power teaching circuit: Suitable for energy-saving lamps in the case of 3rd<0.86, 5rd<0.65. Flow-by-flow circuit: The lamp current peak-to-peak ratio is greater than 1.7 and cannot be overcome and should be eliminated. Electron-inductor circuit: costly, but anti-interference, can be used in moderation. Active filter circuit: The power supply voltage is 120V (Vdc is 250V), and the reliability is poor at 220V. It should only be used in environments with good environmental conditions and power supply conditions. Dual pump circuit: development of the flow-by-flow circuit and the competitor. High-frequency pump circuit: development direction.
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LED Flexible Strips Features:
1). LED Flexible Strips with Super bright top LED
2). LED Flexible Strips with Solid state, high shock or vibration-resistant
LED Flexible Strips Advantage:
1) LED Flexible Strips without RF interference
2) LED Flexible Strips maintenance free, easy installation
3) LED Flexible Strips long lifespan: 50,000 to 80,000 hours
4) LED Flexible Strips low power consumption and high intensity
5) LED Flexible Strips less 1% attenuation after 3,000 hours
6) LED Flexible Strips can be non-waterproof, crystal epoxy waterproof,solid cover tube waterproof
7) LED Flexible Strips major reduction in power costs
8) CE & ROHS approved
LED Flexible Strips Application:
1.Architectural decorative lighting
2.Window display lighting
3.Amusement park or theater
4.Emergency lighting
5.Stairway accent lighting
6.Ad signs, light boxes
7.Back lighting for signage letters
8.Swimming pools and fountains
9.Holiday decorative lighting
10.Car decorative lighting
LED Flexible Strips Application Photo
LED Flexible Strips
LED Flexible Strips, Flexible LED Strip Light, Flexible SMD LED Strip
Eversatis International Co., Ltd , http://www.eversatislight.com
