A manganese-copper shunt, including manganese-copper re […]
A manganese-copper shunt, including manganese-copper resistors and conductive clips on both sides, the manganese-copper resistors are plate-shaped and have a preset resistance value; each conductive clip includes two conductive plates up and down, and two The tail parts of the two conductive pieces are combined together, and the front end part is opened at a certain angle. The two ends of the manganese copper resistor are clamped in the open front end part; each conductive piece clip is welded with a binding post and a sampling line It is soldered to the terminal, and the two sampling wires on the two conductive clips are wound into a stranded wire. The utility model facilitates the disassembly and replacement of the shunt; improves the firmness of the clamping of the conductive sheet clip and the manganese copper resistor body, prevents the manganese copper resistor body from falling off from the conductive sheet clip; reduces the loop area of the magnetic field, thereby greatly reducing The effect of the alternating magnetic field on the shunt is described.
In the field of electronic measurement technology, the shunt can be used for sampling and detection of the return flow, current limit, and current sharing of communication systems, electronic complete machines, and automatically controlled power supplies. The shunt is made based on the principle that a voltage is generated across the resistor when a DC current passes through the resistor. In fact, the shunt is a resistor with a very small resistance value. When a DC current passes, a voltage drop is generated for the DC ammeter to display.
However, the manganese-copper resistor and the conductive sheet in the current meter shunt are fixed by welding. When the manganese-copper resistor or the conductive sheet is damaged, the entire meter shunt needs to be replaced. Not only is it costly, but the same The meter shunt is time-consuming and laborious. In addition, the traditional shunt uses a sampling line to sample the voltage at both ends of the manganese copper shunt and the current flowing through it. There is no special requirement for the winding method of the sampling line. Under normal circumstances, sampling by this method has no effect, but this shunt is susceptible to interference from the external alternating magnetic field, which greatly affects the accuracy of its sampling and works impermanently.