Magnetic bubble transducer
US4327423A · kind A · utility
0Cited by
1References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1980 |
| Grant date | Apr 27, 1982 |
| Priority date | — |
| Expiry date | Jul 21, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C19/0866
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A circuit arrangement is disclosed for sensing a presence or absence of a low-level output signal which may be used for detecting a change of resistance in a magnetic bubble detector. The circuit operates in a D.C. coupling mode whereby the low-level signals are directly coupled into a sense amplifier, which is preceded by the circuit above-mentioned. The circuit, which comprises a modified current mirror, is used as a resistance transducer which converts a change of resistance (.DELTA.R) into a direct change of voltage (.DELTA.E). The change of voltage provides an indication of the presence of, for example, a magnetic bubble.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.