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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AN3028 датащи(PDF) 28 Page - STMicroelectronics |
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AN3028 датащи(HTML) 28 Page - STMicroelectronics |
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28 / 37 page  Thermal measurements AN3028 28/37 Doc ID 16135 Rev 1 9 Thermal measurements A thermal analysis of the board has been performed using an IR camera for the 115 VAC mains input, full-load condition, both with and without the self-supply function. The results are shown in Figure 29 and 30 and summarized inTable 17. It is worth noting that when the self-supply function is used, the VIPer16LN temperature is higher, due to the power dissipated by the HV startup generator. Figure 29. Thermal measurements at 115Vac, no self-supply Figure 30. Thermal measurements at 115Vac, self-supply A 53.0°C B 44.8°C C 42.5°C D 25.6°C °C 74.7 68.5 62.2 56.0 49.7 43.4 37.2 30.9 24.6 A 63.5°C B 45.0°C C 41.7°C D 24.4°C °C 74.7 68.5 62.2 56.0 49.7 43.4 37.2 30.9 24.6 Table 17. Temperature of key components at 115 Vac full load Point Temperature [°C] Reference Without self-supply With self-supply A 44.8 45.8 Transformer B 42.5 41.7 Output diode C 53.0 63.5 VIPer16LN D 25.6 24.4 Ambient temperature |
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