| Zugriffsnummer | 48151 |
| Dokumenttyp | Zeitschriftenartikel |
| Peer Review | unbekannt |
| Sprache | Englisch |
| Titel | High-precision DC-current source |
| Autor(in); Institution |
Erné, Sergio N.; PTB-Berlin
Luther, Helmut; PTB-Berlin
|
| Quelle/Jahr | IEEE Transactions on Instrumentation and Measurement: 24 (1975), 4, 345 - 348 |
| ISSN | 0018-9456 |
| DOI | |
| Verlag | New York, NY: IEEE |
| Freie Schlagworte | Detectors ; SQUIDs ; Cyclic redundancy check ; Circuits ; Voltage ; Feeds ; Current measurement ; Electric variables measurement ; Instruments ; Sampling methods |
| Zusammenfassung | For applications in the field of high-precision electrical measurements, specially on superconducting circuits, a dc-current source has been developed, which supplies two dc currents with selectable ratios in the range between 10 mA and 5 A. The performance of the instrument relies on the combination of conventional dc-current comparators with low ripple sampling detectors and ironless cryogenic current comparators with a SQUID as zero detector. Thus the current ratio is stabilized to 1 X 10-9 of its value. |
