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AN2950 데이터시트(PDF) 28 Page - STMicroelectronics

부품명 AN2950
상세설명  This document describes
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
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AN2950 데이터시트(HTML) 28 Page - STMicroelectronics

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Testing the board
AN2950
28/37
Doc ID 15494 Rev 1
2.11
EMI measurements
A pre-compliant test to the EN55022 (class B) European norm has been performed using an
EMC analyzer and a LISN.
First of all, an average measurement of the background noise (board disconnected from the
mains) has been performed and is reported in Figure 46.
Figure 46.
Average measurement of background noise (board disconnected from
mains)
The average EMC measurements at 115 Vac/full load and 230 Vac/full load have then been
performed and the results are shown in Figure 47 and Figure 48 respectively.
Table 19.
Temperature of key components at 115 VAC full load
Point
Temperature (in oC)
Reference
A
66.6
D4 (output diode)
B
51.7
VIPer28LN
C
65.2
Dz (zener diode)
D
38.4
BR1 (Diode bridge)
E
38.9
D3 (clamp diode)



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