摘要
微机型继电保护测试仪要求输出多种参数连续可调的信号.为此,设计了一种基于两级D/A转换的程控信号源,此信号源根据要求可以自动调节输出波形的频率、幅值;结合例子分析此信号源的原理及特点.
Microcomputer testing device for relay protection requires output signal with many kinds of parameter adjustable sequentially. For this purpose, a new type of signal amplifier for realizing program-controlled gain based on two grades D/A converter was designed. Applications of this amplifier to produce multl-performance arbitrary signal generator was discussed. The principal and technical characteristic of this generator were illustrated by examples.
出处
《浙江师范大学学报（自然科学版）》
CAS
2006年第2期154-157,共4页
Journal of Zhejiang Normal University:Natural Sciences
关键词
程控信号源
增益调节
放大
继电保护
program controlled signal generator
gain adjustment
amplification
relay protection
