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发表于 2017-4-27 11:45
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Nezof 发表于 2017-4-26 17:11 . k; q# [% u3 ?5 S
都有对应的测试设备的,三种方法选一个买设备就是
/ P7 C9 b5 Y# P, j/ {有一个测试盒,但是不知道J6,J7 端口的电压是看示波器上的有效值电压还是峰值电压?+ c- Y' j# `# A7 {3 Q* r! E
另外,向高工请教一下16.1故障测试中的整流效应,标准说按照图1 的测试电路,可图一的电路好像是测不对称脉冲电压的图。When testing electronic ballasts for the rectifying effect, the circuit shown in Figure 1 is used.: R7 B1 {9 |: i/ m
The anode of the rectifier is connected to the midpoints of appropriate equivalent resistors;5 q4 v" Z* X, u0 z' Q+ V
the cathode of the rectifier is connected to the short circuited lamp electrode. The direction of
" Q; M) h0 l/ {7 h! ^9 vthe rectifying effect is chosen so as to give the most unfavourable conditions. If necessary,$ N' z4 v" _7 A; W0 j
the lamp is started using a suitable device. |
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