Voltage regulating transformer
US4075547A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 23, 1975 |
| Grant date | Feb 21, 1978 |
| Priority date | — |
| Expiry date | Jul 23, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F3/06
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A ferro-resonant, voltage-regulating transformer. The transformer has a primary winding formed about a portion of each leg in each of two spaced, juxtaposed cores. A regulated output voltage is produced at a resonant circuit formed by a capacitor and a secondary winding around another leg of the first core. The flux variations in the two cores are continuously out of phase with each other. As the primary voltage changes the magnitude of the total flux in the system, the flux in the second core can vary in magnitude and phase thereby to maintain the flux in the first core at a constant level. Thus, the output voltage at the resonant circuit is substantially constant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.