Electromagnetic head having interference compensation circuitry
US5122916A · kind A · utility
6Cited by
2References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 16, 1991 |
| Grant date | Jun 16, 1992 |
| Priority date | — |
| Expiry date | Jul 16, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B20/1879
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
In a magnetic sensing head with reduced crossfeed interference circuitry, the winding of each half of a magnetic core of the head is wound in the same direction as the other about the core. Each winding is coupled to an individual differential amplifier and the output of each amplifier is fed to another differential amplifier which provides the head output substantially unaffected by interference signals picked up by the head. Both magnetically coupled and stray capacitive interference are compensated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.