Variable inductor
US4031496A · kind A · utility
14Cited by
11References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 3, 1974 |
| Grant date | Jun 21, 1977 |
| Priority date | — |
| Expiry date | Jul 3, 1994 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F29/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A variable inductor wherein two closed magnetic circuits each having a predetermined gap in one place are constructed of a movable magnetic core and a fixed magnetic core. When the movable magnetic core is moved, the opposite area between both the magnetic cores in one of the closed magnetic circuits increases, while the opposite area between both the magnetic cores in the other closed magnetic circuit decreases. Thus, the inductances of coils wound around parts of the respective closed magnetic circuits vary complementarily.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.