Liquid ejecting apparatus and head unit

摘要

A liquid ejecting apparatus includes an original drive signal generation section that generates an original drive signal, a signal modulation section that modulates the original drive signal and generates a modulation signal, a signal amplification section that amplifies the modulation signal and generates an amplification modulation signal, a signal conversion section that converts the amplification modulation signal into a drive signal, a piezoelectric element that deforms by the drive signal, a cavity that expands or contracts due to deformation of the piezoelectric element, a nozzle that communicates with the cavity and ejects a liquid in response to increase and decrease of a pressure inside the cavity, and a temperature detection section that detects a temperature of the signal conversion section.

主权项

1. A liquid ejecting apparatus comprising:
an original drive signal generation section that generates an original drive signal; a signal modulation section that modulates the original drive signal and generates a modulation signal; a signal amplification section that amplifies the modulation signal and generates an amplification modulation signal; a signal conversion section that converts the amplification modulation signal into a drive signal; a piezoelectric element that deforms by the drive signal; a cavity that expands or contracts due to deformation of the piezoelectric element; a nozzle that communicates with the cavity and ejects a liquid in response to increase and decrease of a pressure inside the cavity; and a temperature detection section that detects a temperature of the signal conversion section, wherein a length of a path that electrically connects between the signal conversion section and the temperature detection section is shorter than a length of a path that electrically connects between the signal conversion section and the signal amplification section.