LIGHT SOURCE FOR SUPERBRIGHT LEDs

Authors

  • А. Ф. Белоусов
  • Д. А. Белоусов

Keywords:

obratnokhodovy the converter, accumulative inductance, ShIM the regulator, probability of no-failure operation, the reservation switching the device, failure rate.

Abstract

Outdoor lighting highways, streets, yards is important for people living in cities, towns and other settlements because it reduces accidents and reduces kremenogennuyu situation.
Based on the requirements of electric energy conversion into light with the greatest efficiency, and in view of their long life, light fixtures for outdoor lighting advisable ful-lnyat on the matrix consisting of the powerful superbright LEDs. For food matrices used flyback converters DC-driven integrated microcontroller PWM covered feedback output voltage and current. In the first cycle of transformation, when the power switch is opened, executed on a powerful high-voltage transistor, the primary winding of the pulse transformer magnetic energy glows equal.
In the second cycle conversion power switch is closed and opened isolating diodes, magnetic energy is transferred through the secondary winding to the load (LED matrix). By varying the open state of the power key the time is maintained constant load voltage.
The intersection of highways, streets, pedestrian crossings to form various types of intersections at which accumulate vehicles and pedestrians. This is the most dangerous areas, so they are reliable lighting reduces accidents.
When calculating the probability of failure of the lamp it was found that the most prone to failure DC power supply, the power supply LED matrix.
To increase the reliability of the lighting is offered on such sites to install lamps with a "cold" backup, able to two-stabilized source, but one of them has priority. If it fails, it automatically switches to another previously not working, but being in the "cold" reserve. For such a lamp is determined by the probability of failure.

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Published

2016-08-05

How to Cite

Белоусов, А. Ф., & Белоусов, Д. А. (2016). LIGHT SOURCE FOR SUPERBRIGHT LEDs. Lighting Engineering & Power Engineering, (1), 23–29. Retrieved from https://lepe.kname.edu.ua/index.php/lepe/article/view/345

Issue

No. 1 (2016): №45

Section

Articles

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