标题: LED 18W驱动功率偏差 [打印本页] 作者: caoshasha08 时间: 2015-5-15 17:51 标题: LED 18W驱动功率偏差 如题，标签上注明的是18W，实测19.2W。出往北美，是否合格？北美市场针对功率偏差的标准是什么？' s+ Z9 E/ k1 h& e, X3 A# w. X4 f
谢谢！6 ~5 T' m& ?( b3 I' J& g6 i' M 作者: Nezof 时间: 2015-5-15 17:59
1993上有这个： 3 Q1 O- _, ]* p
With the ballast energized at the input voltage and frequency in accordance with Clauses 8.1.5,# j; u l8 U1 m$ t! W- Y
8.1.6, and 8.1.8, the input current shall not be more than 110 percent of the marked rating, and, if# p7 k( c9 @7 m& u1 W1 y. C& n! H
additionally marked for wattage, the input wattage shall not be more than 110 percent of the marked rating# U3 B, Z# b* S0 b2 d
plus 0.5 W with the device in the base up position controlling: $ k B& U3 C! ya) A lamp or lamps which the device lampholder can accommodate, and, O3 q8 ^# c9 l7 `- u1 {
b) No lamp in the case of a lamp adapter. 7 W& M8 I3 `2 j/ T! Q7 w- n: X! Y+ y% t8 z7 r: C
驱动可以看看驱动对应标准 ' k- V6 b7 w. z, j0 Z