Lamp, ballast and starter visual monitor
US4318031A · kind A · utility
16Cited by
4References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1979 |
| Grant date | Mar 2, 1982 |
| Priority date | — |
| Expiry date | Oct 31, 1999 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B41/042
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A visual monitor including a single light indicator for HID lamps (not needing a starter) and a visual monitor including two light indicators for an HID lamp, such as a high pressure sodium lamp, operating in conjunction with the starter. When the lamp is out, the presence or non-presence of an ignited first light indicator indicates lamp failure or ballast failure, respectively. The blinking or nonblinking of the second light indicator indicates whether or not the starter is producing satisfactory starting pulses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.