| 摘要 |
<p>A power conversion system always keeps a constant voltage level relative to the ground potential and shows an improved controllability for the noise compensation current. In the noise reduction circuit (8) of the system, a rectified DC voltage is applied to the positive side output line (P1) and the negative side output line (N1). The DC voltage is divided by a pair of capacitors (Cp, Cn) connected in series with the intermediary point (11) held to the ground potential. Thus, the positive side output line (P1) can always supply a positive voltage that is held to a constant level relative to the ground potential. Similarly, the negative side output line (N1) can always supply a negative voltage that is held to a constant level relative to the ground potential. Additionally, as the transistors (Tr1, Tr2) are controlled for on/off operations by the amplifier (7), the noise compensation current (i) flows through the noise reduction circuit (8) between the input grounding terminal of the full-wave rectifier (2) and the ground. <IMAGE></p> |
