摘要
介绍20秒高保真单片语音录放电路ISD1420的工作原理、应用范围和使用方法。该电路已用在煤气燃气报警测试设备中。
This paper introduces the work principle, application range and method of 20 seconds high fidelity speech sound recording and playing circuit ISD1420. It has been used in the coal gas and fire gase alarm testing set.
出处
《仪表技术》
2004年第3期63-64,共2页
Instrumentation Technology
关键词
语音电路
操作模式
煤气燃气报警器
speech sound circuit
controlling mode
coal and fire gases alarm
