Zhong Xin Tech-Zhong Xin Tech

< p > < a href = "https://www.diangon.com/" "> electrician < / a > the rectifier bridge certainly no stranger, Because it is all electric switch circuit with < a href = "https://www.diangon.com/wenku/rd/dianzi/" > original electronic < / a >, is very common, but for its quality detection, there are certain technical requirements. In order to measure rectifier bridge, we must understand its principle, so that we can easily detect it. Rectifier bridge is actually four < a href = "https://www.diangon.com/wenku/rd/yuanqijian/" "> combination use of diode < / a > is a component, but it is can be understood as it is a team. Commonly seen are directly welded on the plate, and some are encapsulated. No matter which form of input terminal is alternating current, out is direct current, the simplest understanding is to transform alternating current into direct current and release, for electrical circuit use. So as an electrician we encounter rectification bridge fault when how to deal with? First of all, we need to know how to determine the ac and DC ends without marking: The < a href = "" https://www.diangon.com/wenku/yiqiyibiao/" "> multimeter < / a > to R * 100 gear, red pens and one end fixed and black pens and measure the other three side, when resistance were bigger, the red pens and receive as cathode rectifier bridge. If the black pen is used to fix one end, the red pen is used to measure the resistance ＆#118alue of the other three ends are small, the black pen is connected to the negative pole. After judging the positive and negative terminals, what is left is the AC terminal. The AC terminal does not have polarity, so there is no need to judge. The main or for a good or bad judgment method, also the multimeter R * 100 gear, find the ac side and dc side, measured, when the reading of the table to 0, shows that the bridge internal short circuit, reverse resistance were bigger, if communication that bridge circuit, of course, this method is to encapsulate the rectifier bridge piece, if not encapsulated, with diode gear, Direct measurement, good or bad is easy to judge. < p > about maintenance, in most cases, the encapsulation of the rectifier bridge, as long as to determine the fault blocks replaced, the fault of the rectifier pieces, there is really no good way, but for open circuit fault or can use the repair, that is the rectifier bridge in open circuit block parallel a is not less than the original parameters of the rectifier diode, this not rectifying standby in the hand, For < a href = "" https://www.diangon.com/wenku/rd/dianyuan/" "> power < / a > accuracy is not high on the body is completely possible, and the effect is good, not encapsulated rectifier bridge, one by one measurement, which the bad, in which, very simple, I won't go into it any further.