Abstract
With GaN blue lightemitting diodes (LEDs), high-power white LEDs (W-LEDs) were packaged with yellow poly-silicate phosphor. In this paper, W-LEDs lamps were made by 24 pieces high-power W-LEDs in two different connectionways: 2-parallelwith 12-series, and 6-parallelwith 4-series. With a proper driving circuit for the high-power W-LEDs lamps, the I-V characteristics, current illumination characteristic, power, and efficiency of the two different connections were studied, the experiment result showed that 2-parallelwith 12-series W-LEDs lamp had better properties than that of the 6-parallelwith 4-series W-LEDs lamp. W-LEDs lamps also have advantages of low power consumption, high reliability and stability compared with high-pressure sodium lamp and fluorescent lamp.
| Original language | English |
|---|---|
| Pages (from-to) | 92-96 |
| Number of pages | 5 |
| Journal | Gongneng Cailiao yu Qijian Xuebao/Journal of Functional Materials and Devices |
| Volume | 15 |
| Issue number | 1 |
| State | Published - Feb 2009 |
| Externally published | Yes |
Keywords
- I-Vcharacteristics
- Illumination
- Phosphor
- Power efficiency
- White light emitting diodes (W-LEDs)