To provide a control device for a liquid ejecting apparatus which does not eject an output unintended by a user when a switching element arranged on a power source side in a power amplifying circuit of a driving circuit is short-circuited .A control device drives a capacitive load with a drive signal COM having a voltage between a GND potential and a VDD potential higher than a GND potential, and one of the terminals is set to the GND potential A switching element 7 whose one terminal is connected to the signal terminal 15 and the other terminal is connected to the VDD potential and the other terminal is connected to the signal terminal 15, and the driving The signal COM is generated based on the switching operation of the switching element 7 and the switching element 8 and the potential difference between the peak voltage of the driving signal COM and the VDD potential is not more than a predetermined value.(FIG.【課題】駆動回路の電力増幅回路にある、電源側に配置されるスイッチング素子が短絡した場合に、使用者が意図しない出力の噴射が行われることのない、液体噴射装置の制御装置を提供する。【解決手段】制御装置は、GND電位とGND電位よりも高いVDD電位との間の電圧の駆動信号COMで容量性負荷を駆動する容量性負荷駆動回路であって、一方の端子がGND電位に接続され、他方の端子が信号端子15に接続されたスイッチング素子7と、一方の端子がVDD電位に接続され、他方の端子が信号端子15に接続されたスイッチング素子8と、を有し、駆動信号COMが、スイッチング素子7およびスイッチング素子8のスイッチング動作に基づき生成され、駆動信号COMのピーク電圧と、VDD電位との電位差が所定の値以下であることを特徴とする。【選択図】図3
