Driver circuit arrangement for high capacitive loads

• Main Authors: MARTIJN SCHUURMANS HAN, BERNARDUS HENRICUS KRABBENBORG, LUTSEN DOPP
• Format: Patent
• Language: Chinese; English
• Published: 30.11.2021
• Subjects: DEAF-AID SETS; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS; PUBLIC ADDRESS SYSTEMS

The invention relates to a driver circuit arrangement (1) for driving a load (2), such as a high capacitive piezoelectric loudspeaker with an amplifier (3). The driver circuit arrangement (1) employs a dual feedback configuration with a feedback resistor (4) and a current sensor feedback arrangement (5). The current sensor feedback arrangement (5) provides a current feedback path from the amplifier output to the amplifier input and has a current sensor resistor (6) connected in the output current path of the driver circuit arrangement (1). A current feedback amplifier (7) is presented to be connected to the current sensor resistor (6) and to an amplifier input. 一种用于驱动负载(2)的驱动器电路装置(1)，例如具有放大器(3)的高电容性压电扬声器。驱动器电路装置(1)采用具有反馈电阻器(4)和电流传感器反馈装置(5)的双反馈配置。电流传感器反馈装置(5)提供从放大器输出端到放大器输入端的电流反馈路径，并且具有连接在驱动器电路装置(1)的输出电流路径中的电流传感器电阻器(6)。电流反馈放大器(7)被呈现为连接到电流传感器电阻器(6)和连接到放大器输入端。