| 摘要 |
<p>In a PDP power circuit (1), a rectifier circuit(2) is connected to an external commercial power source(99), and a high voltage power circuit(10) is connected to the rectifier circuit(2) and outputs a first voltage(Voh). A first capacitor (C1) is connected between an output terminal of the high voltage power circuit(10) and the ground potential. A low voltage power circuit(20) is also connected to the rectifier circuit(2) and outputs a second voltage(Vol) lower than the first voltage (Voh). The input terminal of a DC/DC converter(30) is connected to the high voltage side of the first capacitor (C1), while the output terminal of the DC/DC converter(30) is connected to the output terminal of the low voltage power circuit(20). A voltage detector circuit(31) is also connected to the output terminal of the high voltage power circuit(10). The first voltage(Voh) is supplied to a PDP drive circuit(50a), while the second voltage(Vol) is supplied to a PDP control circuit (50b). <IMAGE></p> |
