Thermal EMF Error in Current Sense Resistors

Whenever the junction of two dissimilar metals is heated, there is a voltage generated across the junction, the magnitude and polarity of which depends upon the specific metals and the amount of heat applied and is expressed in microvolts per degree centigrade.This phenomenon is known as the Seebeck... More

Whenever the junction of two dissimilar metals is heated, there is a voltage generated across the junction, the magnitude and polarity of which depends upon the specific metals and the amount of heat applied and is expressed in microvolts per degree centigrade.This phenomenon is known as the Seebeck or thermocouple effect and occurs in resistors at the resistor element/ termination junction. It appears as a battery in the circuit and is a significant source of error in low level DC measurements. This demonstration measures and compares the Thermal EMF error, in both magnitude and decay time, of four different resistor technologies. Less

June 8, 2012
|
219 Views
Share:

Related Videos


3M-Science-Applied-to-Life
You might not always realize it, but you’re never more than 10 feet away from 3M Science. It’s in cars, pla...
6 Views
Liquid-Dispensed-TIM
This animation demonstrates how to combine your Thermal Clad® IMS with Bergquist Liquid Dispensed TIM for an optimal thermal solution.
1 Views
ATS-clipKIT-Heat-Sink-Clips-Under-Flame-Test
Time lapsed 10 minutes under a blowtorch
1 Views
Orion-Fans-AFM-Series-Air-Flow-Monitoring-System
Introduction and overview of the AFM series of airflow monitors from Orion Fans. Th...
2 Views
Orion-Fans-Louvered-Fan-Kit
Introduction and review of the Orion Fans' Louvered Fan Kits
10 Views
Heat-Sink-Attachment-Engineering-Tutorial
This engineering tutorial covers the 6 basic methods to attach a heat sink to a semiconduct...
14 Views
Hangout-on-Air-with-Digi-Key-and-TE-Connectivity
Digi-Key's Josh Jimenez is joined by Barry Brents from TE to discuss circuit protec...
103 Views
Thermal-EMF-Error-in-Current-Sense-Resistors
Whenever the junction of two dissimilar metals is heated, there is a voltage generated a...
219 Views
ROHM-LED-Driver-Another-Geek-Moment
Jamie Pederson demonstrates the use of the 11 pin SIP LED driver module from ROHM semiconductor.
127 Views
Pyrolitic-Graphite-Sheets-Another-Geek-Moment
Jamie Pederson shows off Panasonic's new thermal conductive material, the pyrolitic gr...
754 Views
1- 10 of 14 videos