Low line voltage detection control module and method for a fluorescent lamp
US5739640A · kind A · utility
13Cited by
4References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 8, 1995 |
| Grant date | Apr 14, 1998 |
| Priority date | — |
| Expiry date | Dec 8, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B41/2983
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention discloses a control module that provides improved control over the ignition of a fluorescent lamp. In one aspect, the control module determines whether the lamp is lit and, when the lamp is not lit, determines whether the power supply line voltage is insufficient to sustain the lamp in a lit state after ignition. When the power supply line voltage is determined to be insufficient, the control module waits until the power supply line voltage rises to a sufficient level before igniting the lamp.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.