Email Document Reference

Enter your email address below and the reference for this document will be sent to shortly from webmaster@ceesi.com.

Title: The Problem With Shunts
Author: David W. Braudaway
Source: 2008 Measurement Science Conference
Year Published: 2008
Abstract: An understanding of the properties of resistance materials and the effects of resistor construction is necessary to assure optimum application. Reviewed are the characteristics of precision resistance alloys, laboratory type moderate- to high- precision resistors and the design and construction of resistors and shunts. The effects of resistor termination and terminals are briefly reviewed with emphasis on the requirements necessary to produce four-terminal connections. In use precision laboratory resistors are often adapted to serve as moderate current shunts, and, equally often, are damaged in the process. Shunts are specified with a maximum current but their characteristic has not often been verified by calibration. Use of a 50 mV shunt to produce 100 mV drop raises the temperature to the value where damage results. Precision calibration of the shunt gives a resistance versus temperature characteristic and reduces uncertainty of the values by about two orders of magnitude.

In order to prevent spam and automated file downloads for documents within the Measurement Library, please follow the instructions below and then you will be able to email a reference to this article.