发明名称 |
Ballast circuit |
摘要 |
In a TRIAC dimmable ballast for a discharge lamp comprising a buffer capacitor and a control circuit, a shut off circuit is incorporated for switching off the control circuit when the voltage over the buffer capacitor drops below a predetermined value due to a high phase angle adjusted in the TRIAC dimmer.
|
申请公布号 |
US6452343(B2) |
申请公布日期 |
2002.09.17 |
申请号 |
US20000543335 |
申请日期 |
2000.04.05 |
申请人 |
KONINKLIJKE PHILIPS ELECTRONICS N.V. |
发明人 |
OOSTVOGELS LUDOVICUS F. J.;VOS LUCAS;GAVAS ANGELO V.;SOTELO GALLARDO ENRIQUE |
分类号 |
H05B41/24;H05B41/282;H05B41/298;H05B41/392;(IPC1-7):H05B37/02 |
主分类号 |
H05B41/24 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|