Come and understand the reasons for the burnt rectifier bridge?

Come and understand the reasons for the burnt rectifier bridge?

The rectifier bridge circuit has malfunctioned and it is found that the rectifier bridge is burnt out. Generally, the heat dissipation fins are not large enough, the overload impact current is too large, and the heat cannot be dissipated.

1. The load of the diode rectifier bridge circuit is short circuited and the insulation is poor. Caused by excessive load current.

2. Frequent start and stop of power supply, if inductive load belongs to energy storage components! Then Counter-electromotive force will be generated. Reverse breakdown of the rectifier element. During bridge rectification, only one is broken. Then the symmetrical bridge arm will burn out!

3. Some components have been used for a long time and their quality has decreased!

4. The input voltage is too high.