本文给出了两种结构的可用于接触器、断路器及混合式电路的直动式极化磁系统，分析了其工作原理，并根据其等效磁路对其进行了计算。
The paper presents two kinds of the straight type polarized magnetic system that can be used in contactor, breaker and hybrid electrical appliance, and analyzed the working principle.
本文介绍混合式接触器的结构、触发电路及其保护器。
Present paper introduces the structure of hybrid contactor, triggering circuit and its protector.
本文介绍三相混合式步进电动机的驱动控制电路。
This paper introduces the controlling and drive circuits of three phase hybrid stepping motor.
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