|
Nezof 发表于 2017-4-26 17:11 & U8 ^# f+ e1 s
都有对应的测试设备的,三种方法选一个买设备就是
+ ]8 G, q+ q$ u5 z6 {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?
4 c) z5 s: _2 C8 Z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. e* X2 m$ Q% o8 q) p, l
The anode of the rectifier is connected to the midpoints of appropriate equivalent resistors;
1 r. u) d i+ d$ V$ athe cathode of the rectifier is connected to the short circuited lamp electrode. The direction of% q& m$ [; t5 l
the rectifying effect is chosen so as to give the most unfavourable conditions. If necessary,4 T8 p; m. R8 c% q' E' h0 J' e; E
the lamp is started using a suitable device. |
|