| 摘要 |
PURPOSE:To improve reliability by inputting the output of three sets of control circuits, comprising oscillators and voltage controls capable of being controlled singly, into a majority circuit, and controlling an invertor with the output. CONSTITUTION:DC that in a rectification 11 of AC input is smoothed with a reactor L and a capacitor C, and a battery Ba is charged and also an invertor 13 is turned on or turned off with a single g. Generated VVVF is supplied to the load outside the Figure through a transformer 14, and is also supplied to the transformers 201-203 in a control part B. The output of the transformers 201-203 are input into control circuits 301-303 consisting of oscillators and voltage controls capable of being controlled singly, and the output is input into a majority circuit 40. An invertor 13 is controlled with a majority signal g sought in the majority circuit 40. |
