Testing device for electrically analyzing a high _pressure sodium lighting fixture and lamp
US4496905A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 17, 1981 |
| Grant date | Jan 29, 1985 |
| Priority date | — |
| Expiry date | Aug 17, 2001 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B47/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A testing device for electrically analyzing electrical failures in high pressure sodium lighting fixtures is disclosed. The testing device is inserted in the lighting fixture after the sodium lamp has been removed and contains three indicator lights. The user of the device compares the condition of the indicator lights with a chart on the label of the device to determine the type of failure. The circuit analyzer device will give distinct indications for a defective lamp, a defective circuit starter board, and a defective ballast and capacitor, thereby allowing the user of the device to make any necessary changes in order to return the lighting fixture to service. A pair of rectifier diodes are installed in a reverse direction so that the pulse to the lamp must be at least 2500 volts in order to break over the diodes PRV rating and to light the appropriate indicating lamps.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.