| Zugriffsnummer | 32745 |
| Dokumenttyp | Konferenzartikel in Zeitschrift |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | Two-stage coaxial inductive voltage divider and its calibration setup for use between 1 kHz and 100 kHz |
| Autor(in); Institution |
Beug, Marc Florian; 2.6, Elektrische Quantenmetrologie, PTB-Braunschweig
Moser, Harald; 2.1, Gleichstrom und Niederfrequenz, PTB-Braunschweig
|
| Quelle/Jahr | IEEE Transactions on Instrumentation and Measurement: 64 (2015), 6, 1670 - 1675 |
| ISSN | 0018-9456 |
| DOI | |
| Verlag | New York, NY: IEEE |
| Konferenzangaben | Conference on precision electromagnetic measurements (CPEM 2014), Rio de Janeiro, 24-29, August, 2014, Brazil |
| Freie Schlagworte | Inductive voltage dividers ; ratio transformers ; voltage ratio calibration ; bootstrap method |
| Zusammenfassung | This paper describes the development of a compact n/8 inductive voltage divider (IVD) for the use in the frequency range between 1 kHz and 100 kHz and voltages up to 5 V. The development includes a number of additional inductive components for the bootstrap calibration setup such as a supply transformer which ensures the galvanic isolation of the calibration setup, a calibration transformer, and a detection transformer. The desired frequency and uncertainty range requires a two-stage IVD design with coaxial windings, a triaxial differential branch, and voltage controlled shields to minimize capacitive stray currents. The bootstrap calibration setup follows a special "coaxial-by-design" scheme which guarantees nearly identical currents in inner and outer conductors of the coaxial connections without use of any chokes. The calibration of the IVD yielded in-phase and quadrature IVD corrections within 6 · 10-6 and 1 · 10-6 both with uncertainties (k = 2) below 1 · 10-6 at 100 kHz. |
