Patent ID: 9586397
Date: 2017-03-07
CPC Classifications: B41J,H03K

Claim:
1. A drive circuit for driving a capacitive load comprising: an integrated circuit including a modulation circuit that generates a modulation signal that is obtained by pulse-modulating a source signal; a transistor that generates an amplified modulation signal by amplifying the modulation signal; a low pass filter that includes a capacitor and generates a drive signal which is applied to the capacitive load by smoothening the amplified modulation signal; and a circuit substrate on which the integrated circuit, the transistor, and the low pass filter are mounted, wherein the capacitor includes a first electrode and a second electrode, the integrated circuit and the first electrode are connected to a ground pattern, and a distance of the integrated circuit and the first electrode of the capacitor is shorter than a distance of the integrated circuit and the second electrode of the capacitor.