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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AN4026 датащи(PDF) 25 Page - STMicroelectronics |
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AN4026 датащи(HTML) 25 Page - STMicroelectronics |
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25 / 40 page  AN4026 Thermal map Doc ID 022603 Rev 1 25/40 5 Thermal map In order to check the design reliability, a thermal mapping by means of an IR camera was carried out. In Figure 26 and 27 the thermal measurements of the board, component side, at nominal input voltage are shown. Some pointers visible on the images have been placed across key components or showing high temperature. The ambient temperature during both measurements was 27 °C. All components are working within their operating temperature range with margin. Figure 26. Thermal map at 115 Vac - 60 Hz - full load. Figure 27. Thermal map at 230 Vac - 50 Hz - full load Table 3. Thermal map reference points Point Reference Description A L1 EMI filtering inductor B D1 Bridge rectifier C L2 PFC inductor – hottest point D D4 PFC output diode E Q1 PFC MOSFET |
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