Apparatus and method for starting and controlling a fluorescent tube
US5838110A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 17, 1996 |
| Grant date | Nov 17, 1998 |
| Priority date | — |
| Expiry date | May 17, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S315/05
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A starter unit for a fluorescent tube includes in parallel across two terminals, first and second main thyristors head-to-tail connected and a zener protection diode. The gate of the first thyristor is connected to one of the terminals through a resistor and to the other terminal through the series connection of an auxiliary thyristor with a zener diode (Z). The gate of the auxiliary thyristor is connected to a control terminal of the integrated circuit. The cathode of the auxiliary thyristor is connected with a supply terminal of the integrated circuit and to a storing capacitor. The gate of the second thyristor is connected to a control terminal of the integrated circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.