发明名称 |
Backlight unit having protection circuit using induced voltage detection |
摘要 |
There is provided a backlight unit that determines whether a lamp performs an abnormal operation by detecting a voltage that is induced in a power conversion transformer without using a complicated and expensive detection circuit. A backlight unit having a protection circuit using induced voltage detection according to an aspect of the invention includes an inverter part including a primary coil receiving power and at least one secondary coil converting the power from the primary coil to AC power set beforehand, a lamp part including at least one lamp receiving the AC power from the inverter part to emit light, a detection part including conductors detecting voltages electromagnetically induced in the secondary coil, and an abnormality determining part comparing detection voltages from the detection part with a reference voltage set beforehand.
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申请公布号 |
US7612974(B2) |
申请公布日期 |
2009.11.03 |
申请号 |
US20070946700 |
申请日期 |
2007.11.28 |
申请人 |
SAMSUNG ELECTRO-MECHANICS CO., LTD. |
发明人 |
KIM HYO YOUNG;OH SUNG HUN;KIM JONG RAK |
分类号 |
H02H3/08;H02H9/02 |
主分类号 |
H02H3/08 |
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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