| 摘要 |
PURPOSE:To reduce the size and to suppress noise leakage by arranging an inverter, a noise prevention shunt capacitor, a series reactor and a surge current preventing snubber circuit, closely to one another, in one metallic housing. CONSTITUTION:An A/D converting section 103 and a D/A converting section 104 are mounted on a circuit board 102 arranged in a metallic housing 101 thus constituting an inverter. Reactors 109R-109T are connected in series with input side lead wires 105R-105T and further connected through a shunt capacitor network 107 with an A/D converting section 103. Output lead wires 106U-106W from the D/A converting section 104 are connected with a shunt capacitor network 108 and series reactors 110U-110W. In the shunt capacitor networks 107, 108, capacitors are connected between I/O lines and the housing 101. Snubber circuits(not shown) are connected with commutators in the A/D converting section 103 and the D/A converting section. These components are arranged closely to one another. |
