PROBLEM TO BE SOLVED: To provide a liquid ejecting device avoiding that a carrier ripple is superimposed on a driving signal of a capacitive load.SOLUTION: The liquid ejecting device includes: a driving waveform signal generating circuit 210 that generates a driving waveform signal a modulation circuit 230 that performs pulse modulation on the driving waveform signal to generate a modulation signal a digital power amplifier 240 that amplifies power of the modulation signal to generate a power amplification modulation signal in the form of a pulse wave a smooth filter 250 that smoothes the power amplification modulation signal in the pulse wave to generate the driving signal a connection cable 150 that connects the smooth filter 250 to the capacitive load 116 and is provided such that at least one of the smooth filter 250 and the capacitive load 116 is exchangeable a connection line information acquiring unit 270 that acquires connection line information associated with the connection cable 150 and a carrier frequency changing unit 280 that changes a carrier frequency when the modulation circuit 230 performs the pulse modulation on the driving waveform signal, on the basis of the connection line information.COPYRIGHT: (C)2013,JPO&INPIT【課題】容量性負荷の駆動信号にキャリアリップルが重畳することを回避する液体噴射装置を提供する。【解決手段】液体噴射装置は、駆動波形信号を発生する駆動波形信号発生回路210と、駆動波形信号をパルス変調して変調信号を生成する変調回路230と、変調信号を電力増幅してパルス波状の電力増幅変調信号を生成するデジタル電力増幅器240と、パルス波状の電力増幅変調信号を平滑化することによって駆動信号を生成する平滑フィルター250と、平滑フィルター250と容量性負荷116とを接続し、平滑フィルター250と容量性負荷116との少なくとも一方を取替え可能に設けられた配線ケーブル150と、配線ケーブル150に関連付けられた配線情報を取得する配線情報取得手段270と、変調回路230が駆動波形信号をパルス変調する際のキャリア周波数を、配線情報に基づいて変更するキャリア周波数変更手段280と、を有する。【選択図】図2
