D. C inverter of integrated circuit fluorescent lamp
The utility model relates to a DC inverter for a fluorescent lamp. The utility model comprises an inversion control circuit which is formed by the connection of a pulse-width modulation control circuit, an auxiliary power supply circuit and an auxiliary turn-off circuit, a main inversion loop which...
Saved in:
| Main Authors | , , |
|---|---|
| Format | Patent |
| Language | English |
| Published |
17.06.1998
|
| Edition | 6 |
| Online Access | Get full text |
Cover
Loading…
| Summary: | The utility model relates to a DC inverter for a fluorescent lamp. The utility model comprises an inversion control circuit which is formed by the connection of a pulse-width modulation control circuit, an auxiliary power supply circuit and an auxiliary turn-off circuit, a main inversion loop which is formed by that a push-pull typed working power electronic switch is connected to a main transformer, and a current ballasting circuit which is formed by that an LC resonance network is connected to a fluorescent lamp filament. The pulse-width modulation control circuit is made of integration sheets, and a double-channel and full symmetric fixing frequency drive signal is produced to cause two power electronic switches alternately on and off. A DC voltage can be inverted to a high frequency AC square-wave voltage. The LC resonance network produces high voltage to light up the fluorescent lamp to keep stable working. The frequency stability of the utility model is good. |
|---|---|
| Bibliography: | Application Number: CN1995217257U |