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各位同学!
" I. S1 b6 Y6 I1 o$ x9 g! k 那位同学做过附录C的测试,看红色字体(灯管与合适的等效电阻的中点连接),合适的等效电阻具体是多大电阻呢?怎么算出来的?谢谢! 9 {! M. l: M! L
b) Lamp rectification . Q5 M$ n. q9 Q
1) Luminaires for fluorescent lamps (Figures C.1 and C.2)
5 K( q# _* L ~% V7 l7 H) U8 [ This is a fault condition which may occur after extended use in luminaires employing z, ^2 W! |: t# C
starterless ballasts with capacitive reactance control. When testing luminaires for the / E3 o# Q: q" n! g1 w6 `
rectifying effect, the circuit shown in Figure C.1 shall be used. The lamp is connected to
2 G" T6 ~2 [8 W! q5 ~' dthe midpoint of the appropriate equivalent resistors. The rectifier polarity is chosen so 4 U+ ?! l# V: s1 F
as to give the most unfavourable operating conditions. If necessary, the lamp is started
% Q4 v4 B$ j& {2 P2 q9 w$ [using a suitable starting device.
2 G+ J. [2 |; v |
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