Phase controlled voltage reducing circuit having line voltage compensation
US4353025A · kind A · utility
25Cited by
2References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 8, 1980 |
| Grant date | Oct 5, 1982 |
| Priority date | — |
| Expiry date | Dec 8, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M5/257
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A voltage reducing circuit device for reducing the RMS value of an incoming AC voltage is disclosed herein. This device is especially suitable for reducing line voltage applied to a load requiring lower voltage. In a preferred embodiment, the device is one which allows a domestic made 115 VAC small heating apparatus, such as a hair dryer, to be used in foreign countries where the 230 VAC service is available. In any case, the device is one which is relatively insensitive to fluctuations in line voltage and to changes in frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.