Patent ID: 8083309

Claim:
A liquid ejecting apparatus, comprising: an element that is charged and discharged so as to perform an operation to eject a liquid; an analog signal generating unit that generates an analog signal having a voltage change pattern for determining the operation of the element; a charging transistor that amplifies a current of the analog signal while the element is charged, and pushes the amplified current toward the element, the charging transistor having a current source terminal, to which a current source is connected, and a push terminal for pushing the current; a current source connector that selects at least one current source from among a plurality of current sources according to a voltage of the analog signal, and connects the selected current source to the current source terminal, wherein the current source connector selects at least one current source from among the plurality of current sources at different voltages, wherein the plurality of current sources have a first current source at a first voltage and a second current source at a second voltage lower than the first voltage, and the current source connector includes: a current source switch that is provided between the first current source and the current source terminal, and a control circuit that outputs, to the current source switch, a control signal at a voltage level determined to control the operation of the current source switch on the basis of the voltage of the analog signal.