发明名称 |
Regenerative control type switching power source device |
摘要 |
Disclosed is a switching power source device for supplying a DC stabilized voltage to industrial or household electronic appliances. The power source device can restrict a change in the switching frequency due to the change in load so that low noise and high efficiency can be realized. The power source device includes a first rectifying and smoothing circuit and a second rectifying and smoothing circuit. The first rectifying and smoothing circuit includes a rectifying diode and a smoothing capacitor. The second rectifying and smoothing circuit includes a rectifying diode and a smoothing capacitor. In a closed circuit composed of the first rectifying and smoothing circuit and second rectifying and smoothing circuit which are connected by a transformer, leakage inductance between the primary winding and secondary winding of the transformer is caused to resonate with the first or second rectifying and smoothing circuit so that a resonance current due to the resonance is taken as the current from the secondary winding to restrict occurrence of noise.
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申请公布号 |
US5383106(A) |
申请公布日期 |
1995.01.17 |
申请号 |
US19930001646 |
申请日期 |
1993.01.07 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
YOSHIDA, KOJI;NAGAGATA, NOBUYOSHI;ISHII, TAKUYA |
分类号 |
H02M3/28;H02M3/335;(IPC1-7):H02M3/28 |
主分类号 |
H02M3/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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