Ballast circuit for multiple parallel negative impedance loads
US4574222A · kind A · utility
52Cited by
3References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 27, 1983 |
| Grant date | Mar 4, 1986 |
| Priority date | — |
| Expiry date | Dec 27, 2003 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B41/2325
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A current-balancing transformer is provided to supply plural parallel-connected electrical loads, especially loads such as gas discharge lamps which exhibit negative impedance and/or non-linear impedance over at least a part of their normal operating range. The current-balancing transformer forces current sharing among the loads so that each of the parallel-connected loads is supplied operating current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.