发明名称 |
Resonance type power converter unit, lighting apparatus for illumination using the same and method for control of the converter unit and lighting apparatus |
摘要 |
A resonance type power converter unit has, in an inverter circuit in which voltage driven type semiconductor devices each having the function not to prevent a backward current are connected in series, the respective voltage driven devices are associated with capacitors which are charged or discharged with currents flowing through the devices and voltage detectors for detecting voltages of the capacitors, and drive circuits for turning on and off the voltage driven devices in accordance with outputs of the voltage detectors. With the resonance type power converter unit, stable resonance operation synchronous with a high-frequency load current can be warranted.
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申请公布号 |
US5977725(A) |
申请公布日期 |
1999.11.02 |
申请号 |
US19970921363 |
申请日期 |
1997.08.29 |
申请人 |
HITACHI, LTD. |
发明人 |
MIYAZAKI, HIDEKI;SHOJI, HIROYUKI;NAMURA, YUICHI |
分类号 |
H02M7/538;H05B41/28;H05B41/282;H05B41/392;(IPC1-7):G05F1/00 |
主分类号 |
H02M7/538 |
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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