Pulse signal generator with movable magnetic element
US6717400B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2001 |
| Grant date | Apr 6, 2004 |
| Priority date | — |
| Expiry date | Jun 4, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/9515
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A pulse signal generator comprises a magnetic element (1) capable of producing large Barkhausen jumps; a generating unit for generating a magnetic field, which is changed by the object to be detected (5) to cause the magnetic element to produce the large Barkhausen jumps; the generating unit consists of a pair of elongated magnet/yoke combinations (3,6 and 4,7) provided on opposite sides of the magnetic element (1) such that their poles are oriented in opposite directions, forming a detecting area at an end thereof (3A, 4A); a detecting unit (2) for detecting the large Barkhausen jumps to produce a corresponding pulse signal; the magnetic element (1) having a first length between a second length of the magnet/yoke combinations and a half of the second length and provided toward the detecting area; and an adjusting yoke (8) movable along one of the elongated magnet/yoke combinations (3, 6).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.