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    • 10. 发明授权
    • Inverter circuit, backlight assembly, and liquid crystal display with backlight assembly
    • 逆变电路,背光组件和带背光组件的液晶显示器
    • US07402957B2
    • 2008-07-22
    • US11521884
    • 2006-09-15
    • Tatsuhisa ShimuraTakashi KinoshitaOsamu Sengoku
    • Tatsuhisa ShimuraTakashi KinoshitaOsamu Sengoku
    • H05B37/00
    • H05B41/2822
    • In an inverter circuit, inverter transformers supply AC voltage to discharge tubes. The inverter transformers are arranged such that the AC voltage at a respective first terminal of each secondary coil has an opposite polarity with respect to a corresponding second terminal of each secondary coil. Balance transformers have primary coils inserted in series between a reference terminal of the secondary coils of the inverter transformers and ground. The secondary coils of the balance transformers are connected in series to form a loop. One node of the loop is grounded and a voltage detection node is located on the loop. At least one secondary coil of the secondary coils of the balance transformers is interposed between the grounded node of the loop and the voltage detection node. Thus, an abnormal state or condition, such as an open circuit or a short circuit may be detected.
    • 在逆变电路中,逆变变压器为交流电压提供放电管。 逆变器变压器被布置成使得每个次级线圈的相应的第一端子处的AC电压相对于每个次级线圈的对应的第二端子具有相反的极性。 平衡变压器具有串联插入在逆变器变压器的次级线圈的参考端和地之间的初级线圈。 平衡变压器的次级线圈串联连接形成一个回路。 回路的一个节点接地,电压检测节点位于回路上。 平衡变压器的次级线圈的至少一个次级线圈插入在环路的接地节点和电压检测节点之间。 因此,可以检测到诸如开路或短路的异常状态或状况。