Apparatus for supplying power from a ballast circuit to an auxiliary load
US5828182A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 23, 1996 |
| Grant date | Oct 27, 1998 |
| Priority date | — |
| Expiry date | Apr 23, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B47/19
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention is directed to a power supply circuit for controlling a load which, for example, includes both a gas-discharge lamp and an auxiliary load. The power supply circuit includes a ballast circuit for limiting current supplied to the gas discharge lamp. The auxiliary load, such as an occupancy sensor, is connected to receive an alternating current signal from a transformer winding, inductor coil, or other suitable portion of the ballast circuit. The power supply circuit includes a rectifier for rectifying the alternating current signal to provide a stable, low-voltage direct current signal to drive the auxiliary load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.