发明名称 |
Zero-voltage switching type electronic ballast for fluorescent lamp |
摘要 |
A zero-voltage switching type electronic ballast for a fluorescent lamp includes a pair of capacitors connected in series between first and second nodes of a DC power source; a pair of switching devices whose current passages are connected in series between the first and second nodes of the DC power source; a load resonant circuit portion having a serial resonant circuit between the connection node of the pair of capacitors and the connection node of the pair of switching devices, and a discharge lamp; capacitors each connected in parallel to the current passage of the switching devices; a driving transformer having a secondary side which includes first and second windings each connected to the respective switching devices and having opposite polarities, and a third winding having the same polarity as the first winding and connected between the connection node of the pair of switching devices and the load resonant circuit, and a primary side having a fourth winding to which a switching control signal of a predetermined high frequency is applied. A switching control signal generating circuit compares a comparison signal of a predetermined high frequency with first and second reference.
|
申请公布号 |
US5500792(A) |
申请公布日期 |
1996.03.19 |
申请号 |
US19940265847 |
申请日期 |
1994.06.24 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
JEON, DAL-YOUNG;JEE, KYUNG-HA;CHOI, NAK-CHOON;SONG, BOK-KI;SHIN, DONG-MYEONG |
分类号 |
H02M7/5387;H05B41/24;H05B41/285;H05B41/298;(IPC1-7):H02M7/537;H05B37/02 |
主分类号 |
H02M7/5387 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|