INPUT CIRCUIT AND POWER CONVERSION APPARATUS

摘要

An input circuit according to the present invention, which connects each of the electrodes of a DC power source comprising a positive electrode and a negative electrode in correspondence to each of the input terminals of a double-pole single-throw switch (13A) comprising a positive-pole input terminal (11a) and a negative-pole input terminal (12a), comprises an arc-extinguishing mechanism that attenuates an arc discharge that is generated when the positive electrode of the DC power source is connected to the positive-pole input terminal (11a) and the negative electrode of the DC power source is connected to the negative-pole input terminal (12a) in the double-pole single-throw switch (13A), and the switch is operated. In addition, a diode (10a) is electrically connected in the direction that current flows from the negative-pole input terminal (12a) towards the positive-pole input terminal (11a), in this input circuit.