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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
4 a k' K: n ]. G. q5 L都有对应的测试设备的,三种方法选一个买设备就是 # D# D: A) x3 z0 y/ _$ f
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?7 H% o& Z+ Q2 h, w! R+ d
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.) d* O( ]' X! I! ?6 c% E
The anode of the rectifier is connected to the midpoints of appropriate equivalent resistors;' K5 H- r- V. e2 `
the cathode of the rectifier is connected to the short circuited lamp electrode. The direction of9 \4 M$ o3 o7 u1 ?4 _ B2 O4 p9 B) h8 m
the rectifying effect is chosen so as to give the most unfavourable conditions. If necessary,
/ N' X/ D1 ]! G3 P7 N" i! uthe lamp is started using a suitable device. |
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