Rectifier bridge capable of avoiding reverse installation and reverse insertion

Abstract

The invention discloses a rectifier bridge capable of avoiding reverse installation and reverse insertion. According to the rectifier bridge, pins of the + end and the - end of the rectifier bridge or pins of two alternating-current input ends of the rectifier bridge are pulled at interval. The rectifier bridge is simple in structure and low in cost, and has a function of avoiding reverse installation and reverse insertion; on one hand, the self temperature of the rectifier bridge can be reduced; on the other hand, the bad phenomena of machine explosion, fuse burning and no product output as the rectifier bridge is reversely installed and inserted in batch production are avoided; the production efficiency is improved, the reject ratio of products is reduced, and the safety and the stability of power supply products are effectively improved.

Description

technical field [0001] The invention relates to a rectifier bridge stack, in particular to a rectifier bridge stack which prevents reverse installation and reverse insertion. Background technique [0002] Bridge stacks are commonly used components in rectifier circuits. Currently, there are many types of rectifier bridge stacks, and the two most common types are patch and plug-in. Plug-ins are flat, round, square, and bench-shaped, and SMD is commonly used in SO-4 packages. Usually the rectifier bridge stack has four pins, two of the four pins are connected to the input terminal of the AC power, and are marked with a "~" symbol on the shell of the bridge stack; the other two pins are connected to the output of the DC power Terminals are marked with "+" and "-" symbols on the shell of the bridge stack respectively. These marks are consistent with the marks in the circuit diagram. Except for the two pins marked with "~" symbols, these four pins can be used interchangeably, a...

AI Technical Summary

Problems solved by technology

Because the body of the bridge stack is usually black, the marks on it are not easy to be found, especially for some small rectifier bridge stacks, it is not easy to distinguish the pins

In addition, the package pins of the bridge stacks have the same size and the same distance. In the process of mass production, because some production line workers do not carefully distinguish or cannot distinguish the direction and polarity of the bridge stacks, it is easy to cause wrong assembly of the bridge stacks. The phenomenon of reverse installation and reverse connection will generate a huge surge current and damage the device

Images