Patent ID: 9713922
Date: 2017-07-25
CPC Classifications: B41J

Claim:
1. A driving circuit for driving a capacitive load, comprising: a modulator which generates a modulation signal pulse-modulated from a source signal; a gate driver which generates an amplification control signal based on the modulation signal; a boosting circuit which boosts and supplies a voltage to the gate driver; a transistor which generates an amplification modulation signal amplified from the modulation signal based on the amplification control signal; and a low pass filter which demodulates the amplification modulation signal, generates a driving signal, and outputs the driving signal to the capacitive load, wherein the gate driver and the boosting circuit are electrically connected to a common ground terminal, and wherein a wiring impedance between the ground terminal and the gate driver is smaller than a wiring impedance between the ground terminal and the boosting circuit.