Shunt resistor and method for manufacturing the same

摘要

Provided is a shunt resistor, which controls an influence of skin effect by high frequency current. The shunt resistor has a rod-shaped resistance body (11), and a pair of main electrode (12), of another material from the resistance body, wherein end faces of the resistance body and the main electrode are bonded. The resistance body (11) has a hole (11a) going through in direction where main electrodes are disposed, or a high resistance part (11b) going through at its axis portion that is highly resistive than outer part, and low resistance part (11c) that is formed in outer of the high resistance part. It is preferable that outer circumference of the resistance body is circle-shaped. Since, current doesn't flow fundamentally in the through hole or the high resistance part, fluctuation band in the current pathway can be reduced. Therefore, change of resistance value by skin effect by high-frequency current can be reduced.

主权项

1. A shunt resistor comprising:
a rod-shaped resistance body; a pair of main electrode, which is another material from the resistance body; and a voltage detecting electrode disposed and bonded between the resistance body and the main electrodes, wherein end faces of the resistance body and the main electrodes are bonded; and the resistance body has a hole going through in direction where the main electrodes are disposed, or a high resistance part at its axis portion that is highly resistive than outer part and a low resistance part that is formed in outer of the high resistance part.