数字多用表蜂鸣器电路的设计

The Circuit Design of Digital Multi-meter Buzzer

压电陶瓷是一种具有压电效应的高灵敏度、微功耗电声器件。首先介绍压电陶瓷蜂鸣器的技术特性 ,然后重点阐述数字多用表蜂鸣器电路的设计 ,包括适配 ICL71 0 6型 3 位单片 A/D转换器、ICL 71 2 9型 4 位单片 A/D转换器的两种蜂鸣器电路的设计。

Piezoelectric ceramic is a highly sensitivie,micro power consumption electroacoustic device with piezoelectric effect.This paper starts with the introduction followed by the circuit design of digital multi meter buzzer,including two buzzer cricuit designs adapted 31/2 A/D converter ICL7106,and 41/2 A/D converter ICL7129.