| Zugriffsnummer | 10683 |
| Dokumenttyp | Konferenzartikel |
| Sprache | Englisch |
| Titel | Quartz planar multijunction thermal converters as a new ac-dc current transfer standard up to 1 MHz |
| Autor(in); Institution |
Scarioni, Luciana; Universidad de Carabobo, Facultad de Ciencias y Tecnologia, Departamento de Física, Valencia, VENEZUELA
Klonz, Manfred; 2.1, Gleichstrom und Niederfrequenz, PTB-Braunschweig
Funck, Torsten; 2.1, Gleichstrom und Niederfrequenz, PTB-Braunschweig
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| Quelle/Jahr | 2004 Conference on Precision Electromagnetic Measurements Digest:(2004), 455 - 456 |
| ISBN | 0-7803-8493-8 |
| Berichtsnummer | 04CH37570 |
| Verlag | Piscataway, NJ: IEEE |
| Konferenzangaben | Conference on Precision Electromagnetic Measurement (CPEM), London, 27, June - 02, July, 2004, UK |
| Freie Schlagworte | quartz crystal chips ; planar multijunction thermal converters ; ac-dc current transfer standards |
| Zusammenfassung | The new generation of PMJTCs on quartz membranes and on quartz crystal chips developed at the PTB results in new ac-dc current transfer standards for the current of 10 mA and the frequency range from 10 kHz to 1 MHz, accompanied with small uncertainties. For a PMJTC with a heater resistance of 240 Ω the uncertainties for frequencies up to 100 kHz are smaller than 1 μA/A and up to 1 MHz they increase to 5 μA/A (k=1). A model for the PMJTC has been developed which allows to calculate the ac-dc current transfer difference as well as the attributed uncertainties. The agreement of the simulation and the measurement were tested for high heater resistances of 700 Ω and 240 Ω, for which quite large ac-dc differences are calculated. The good agreement validates the model. |
