liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Precision Amplifier for Applications in Electrical Metrology
Linköping University, Department of Electrical Engineering, Electronics System. Linköping University, Department of Electrical Engineering.
2009 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesisAlternative title
Precisionsförstärkare för tillämpning inom elektrisk metrologi (Swedish)
Abstract [en]

This master's thesis addresses two main problems. The first is how to suppress a common mode voltage that appears for current shunts, and the second how to let a voltage divider work under an unloaded condition to prevent loading errors and thereby a decreased measurement accuracy. Both these problems occurs during calibration of power meters, and verification of current shunts and voltage dividers. To the first problem three alternative solutions are presented; prototype a proposed instrumentation amplifier circuit, evaluate the commercial available instrumentation amplifier Analog Devices AD8130 or let the voltage measuring device suppress the common mode voltage. It is up to the researchers at SP to choose a solution. To address the second problem, a prototype buffer amplifier is built and verified. Measurements of the buffer amplifier show that it performs very well. At 100 kHz, the amplitude error is less than 20 μV/V, the phase error is less than 20 μrad, and the input Rp is over 10 MΩ. This is performance in line with the required to make accurate measurements possible at 100 kHz and over that.

Place, publisher, year, edition, pages
2009. , 73 p.
Keyword [en]
Electrical, Metrology, Precision, Buffer, Amplifier, CMRR
National Category
Control Engineering
Identifiers
URN: urn:nbn:se:liu:diva-16896ISRN: LiTH-ISY-EX--09/4205--SEOAI: oai:DiVA.org:liu-16896DiVA: diva2:174382
Presentation
2009-02-13, Nollstället, Linköpings univesitet, Linköping, 13:15 (English)
Uppsok
teknik
Examiners
Available from: 2009-02-25 Created: 2009-02-21 Last updated: 2009-02-25Bibliographically approved

Open Access in DiVA

fulltext(7123 kB)985 downloads
File information
File name FULLTEXT01.pdfFile size 7123 kBChecksum SHA-512
e55cd6c4346db83f8c8898b46618bdd4f2ecb0a8e02a00927532a55dced1da0481ef1b26ed428edb9afbad5c95816d8bab060c50162f949ef441342dc35cd5d8
Type fulltextMimetype application/pdf

Search in DiVA

By author/editor
Johanssson, Stefan
By organisation
Electronics SystemDepartment of Electrical Engineering
Control Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 985 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 614 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf