POWER UNIT

To realize a power unit which can appropriately adjust capacitance of a feeder circuit according to length of a feeder line while reducing costs.SOLUTION: A power unit comprises: a power supply unit 10 which outputs AC current; an output unit 20 which is connected with a feeder line; and an adjustment unit 31 which adjusts capacitance of a feeder circuit between the power supply unit 10 and the output unit 20. The adjustment unit 31 comprises a first capacitor 41, a second capacitor 42, and a circuit switching mechanism 4. The circuit switching mechanism 4 is constituted to switch the circuit to a serial connection state for connecting the first capacitor 41 and the second capacitor 42 in series between the power supply unit 10 and the output unit 20 and a parallel connection state for connecting the first capacitor 41 and the second capacitor 42 in parallel between the power supply unit 10 and the output unit 20.SELECTED DRAWING: Figure 3 【課題】コストの低減を図りつつ、給電線の長さに応じて給電回路のキャパシタンスを適切に調整することが可能な電源装置を実現する。【解決手段】電源装置は、交流電流を出力する電源部１０と、給電線に接続される出力部２０と、電源部１０と出力部２０との間の給電回路のキャパシタンスを調整する調整部３１と、を備える。調整部３１は、第１キャパシタ４１と、第２キャパシタ４２と、回路切替機構４と、を備える。回路切替機構４は、第１キャパシタ４１と第２キャパシタ４２とを電源部１０と出力部２０との間に直列に接続する直列接続状態と、第１キャパシタ４１と第２キャパシタ４２とを電源部１０と出力部２０との間に並列に接続する並列接続状態と、に切り替えるように構成されている。【選択図】図３