Drive circuit for liquid ejecting device and liquid ejecting device

A drive circuit for a liquid ejecting device, such as an inkjet print head or the like, includes a load detection circuit to generate load number information corresponding to the number of actuators to be concurrently driven for an intended liquid ejection. A signal processing circuit is configured to compare a common drive waveform to a target common drive waveform, and then generate a common drive signal to drive the actuators based on the load number information and the comparison of the common drive waveform and the target common drive waveform. A switching circuit is configured to selectively apply portions the generated common drive signal to an actuator according to intended output of the liquid ejection device.