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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AN2711 датащи(PDF) 21 Page - STMicroelectronics |
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AN2711 датащи(HTML) 21 Page - STMicroelectronics |
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21 / 36 page  AN2711 Performance Doc ID 14425 Rev 3 21/36 6.1.2 Setup for greatest voltage stresses 12 W out, 11 series LEDs, jumpers at W2-W3, W5-W7. Component stresses The tap configuration with jumpers at W2-W3 and W5-W7 with 11 series LEDs maximizes the volts per turn on the transformer. Stress on the bootstrap diode, D9, is too great. A 200 V diode should be used at that location if the maximum number of LEDs in a string is used for each jumper configuration. Figure 14. 96 V input voltage Figure 15. 132 V input voltage Table 4. 12 W into 11 series LEDs Parameter Very low line Low line Nominal line High line Line voltage 96 108 120 132 Line current, mA 164.3 143.6 128.9 116.9 Input power, Watts 15.45 15.17 15.05 15.00 Power factor 0.9853 0.9816 0.9745 0.9638 Output voltage 33.39 33.25 33.23 33.20 Output current, mA 371 371 371 371 Current ripple, mA P-P 92 100 96 96 Output power 12.39 12.34 12.33 12.32 Efficiency, % 80.1 81.3 81.9 82.1 |
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