直流电动机起动控制电路及其扩展

Start-up control circuit′ Design of DC motor and extended power

设计了一种简单实用的直流电动机起动控制电路,该电路具有结构简单、成本不高、保护可靠且容易实现等特点。对设计出的起动控制电路的工作原理及控制回路进行了分析,并在该控制电路上进行了4种功能扩展,实现了分级调速起动、无级调速起动、过流保护起动和双向运行起动。

One kind of simple practical start control circuit was designed in this featured by simple circuit topology and lower cost, and the electric circuit principle of mothod was analyzed, At the same time,it extended the Speed Governing function of the paper. The circuit is work and controlled control circuit.