【摘要】 本文介绍两种用于采集高电压、大电流信号同时又可将强电系统与微机系统隔离开的 A/D 变换电路;提出了几种保护电路的隔离及抗干扰措施。实际应用表明,上述电路具有结构简单,抗干扰能力强,可靠性高等特点,适用于微机应用系统。更多还原

【Abstract】 The two kinds of analog to digit converting circuits which are used in sampling high voltage and strong current and isolating power system and microprocessor system are introduced in this paper.Several isolating methods of protective circuit and anti-interference are proposed.The Practical application shows that the methods in this paper have simple structure,high anti-interference ability and reliability.Therefore they are particularly suitable to applica- tion systems of microprocessor.更多还原