Power source for fluorescent lamps and the like
US4017785A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 10, 1975 |
| Grant date | Apr 12, 1977 |
| Priority date | — |
| Expiry date | Sep 10, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S315/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power source for operating gas discharge lamps and other loads at high frequency, typically utilizing a 115 volt ac source rectified to provide a dc input in the order of 150 volts, and providing a 20,000 hertz output. An inverter with power supply, oscillator circuit and transformer, with conventional primary, secondary and feedback windings for operating the transistor oscillator. An additional output winding on the transformer with a rectifier and filter providing a supplemental dc supply connected to the main dc supply in parallel or in series to supplement a fluctuating main dc supply and maintain continuous oscillator operation while utilizing small filter capacitance and substantially reducing peak ac line current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.