| 发明名称 |
Power Supply Device and Luminaire |
| 摘要 |
According to one embodiment, a power supply device includes a rectifier circuit, a smoothing capacitor, and a normally on type transistor. The rectifier circuit is configured to rectify an alternating current supplied from a voltage source. The smoothing capacitor is charged by an output current output from the rectifier circuit. The normally on type transistor is connected between the rectifier circuit and the smoothing capacitor in series and is configured to limit an output current value of the rectifier circuit during a voltage input from the voltage source to an output current value higher than an output current value of the rectifier circuit during a steady operation. |
| 申请公布号 |
US2015084528(A1) |
申请公布日期 |
2015.03.26 |
| 申请号 |
US201414210529 |
申请日期 |
2014.03.14 |
| 申请人 |
TOSHIBA LIGHTING & TECHNOLOGY CORPORATION |
发明人 |
Otake Hirokazu;Kitamura Noriyuki;Takahashi Yuji;Ishikawa Masato;Miura Yohei |
| 分类号 |
H02M7/06;H05B37/02 |
主分类号 |
H02M7/06 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A power supply device comprising:
a rectifier circuit configured to rectify an alternating current supplied from a voltage source; a smoothing capacitor charged by an output current output from the rectifier circuit; and a normally on type transistor connected between the rectifier circuit and the smoothing capacitor in series and configured to limit an output current value of the rectifier circuit during a voltage input from the voltage source to an output current value higher than an output current value of the rectifier circuit during a steady operation. |
| 地址 |
Yokosuka-shi JP |
