程控电流源的设计

介绍了一种交流压控电流源,采用了数字电压表技术进行电压测量,再利用单片机的运算功能获得其有效值。通过单片机和数模转换芯片对基准电压进行控制,以达到电压控制电流的目的。而传统的压控电流源完全采用模拟电路来实现,与传统的压控电流源相比,它具有精度高、调整范围宽、智能化程度高等优点,是传统压控电流源的理想替代产品。

Design of an AC Voltage Controlled Current Source

This paper introduces a new AC voltage controlled current source.Which adopts DVM technology to measure voltage.The effective value of voltage is obtained through arithmetic function of a chip computer.The voltage controls current through a chip computer and A/D chip to control the reference voltage.However,traditional voltage controlled current source is a completely analog circuit.The AC voltage controlled current source compared with traditional voltage controlled current source has high accuracy,the wide adjustment range,high intelligence etc.It is an ideal substitute for the traditional voltage controlled current source.