发明名称 |
Switching power supply |
摘要 |
A switching power supply supplies a regulated output voltage for an electronic apparatus in industrial or commercial use and suppresses generation of a spike voltage and a spike current due to a transformer, and a recovery voltage of a rectifying diode due to switching and it results in reduction of noise interference and power loss. A series connection of a first switching means and a second switching means repeating on/off action alternately is connected to a d-c source. A series connection of a first capacitor and a primary winding of a transformer is connected in parallel with the second switching means. An induced voltage in a secondary winding is supplied to an output through a rectifying/filtering means. A series resonance current in a closed circuit comprising the first capacitor and a leakage inductance suppresses spike voltage, spike current, and recovery voltage of the rectifying diode.
|
申请公布号 |
US5490052(A) |
申请公布日期 |
1996.02.06 |
申请号 |
US19930053525 |
申请日期 |
1993.04.26 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
YOSHIDA, KOJI;NAGAGATA, NOBUYOSHI;ISHII, TAKUYA |
分类号 |
H02M3/335;(IPC1-7):H02M3/28 |
主分类号 |
H02M3/335 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|