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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 / c; P6 O4 D7 j3 {% o! A1 r
都有对应的测试设备的,三种方法选一个买设备就是 7 F0 Q# w) W5 ^/ P+ d/ U/ m+ W2 D
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?
/ Z0 i0 j2 K* F: y0 A. w; b% V5 c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.
: o& N6 B- d1 ~% W" H; FThe anode of the rectifier is connected to the midpoints of appropriate equivalent resistors;) x! g7 w5 s$ m& g6 {
the cathode of the rectifier is connected to the short circuited lamp electrode. The direction of) z( ]" @0 C" }5 T
the rectifying effect is chosen so as to give the most unfavourable conditions. If necessary,
5 @" J) h1 N/ Zthe lamp is started using a suitable device. |
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