Direct current electromagnet is extensively used as electromagnet controlling element. PTC element is a ceramic thermistor with positive temperature coefficient.
直流电磁铁是广泛应用的电磁控制元件，PT C元件是具有正温度系数特性的半导体陶瓷热敏电阻。
This paper discusses the application of PTC element in the starting of direct current electromagnet according to the working principle of electromagnet and the current time relation of PTC.
本文根据电磁铁的工作原理和PTC元件的电流时间特性，探讨了PTC元件在直流电磁铁启动中的应用。
Break-brake operations have three kinds of break-brake electromagnet, over-current trip and manual button.
分闸操作有分闸电磁铁，过电流脱扣电磁铁及手动按钮操作三种。
The continuous rotating magnet field is transformed into discrete step field in the torque vector control and the electromagnet torque is controlled by means of regulating the stator current.
在矩角控制过程中将连续的旋转磁场离散为步进磁场，通过控制电机定子电流实现对电磁转矩的控制。
The utility model relates to an electricity-saving device of an electromagnet, which carries out retention by alternating current.
本实用新型涉及一种以交流吸持的电磁铁之节电装置。
This paper introduce the application of Siemens digital direct current timing device (6ra70) and program logical controller (SIMATIC S7-300) in piling bed electromagnet for the first time.
该文介绍了西门子全数字直流调速装置(6ra70)和可编程逻辑控制器(SIMATICS7- 300)首次在码垛电磁铁系统中的应用。
This paper got the displacement current about a oscillating dipole and the equation of displacement current line and discusses the property of its electromagnet field.
本文通过计算得到了振荡偶极子周围的位移电流及位移电流线方程。
The current makes the speaker interior electromagnet job, make oscillation membrane to vibrate but produce a sound thus.
电流使喇叭内部的电磁铁工作，从而使振动膜振动而发出声音。
Drop the coil over the projecting core of the electromagnet, with the current-turned on.
除去以上的电磁铁线圈投影核心，以电流打开。
Propose a current sensing method based on FBG and electromagnet and designed relevant mechanism and circuits. measured range has been optimized and the measure data have been given.
完成了方案中相关机械、电路方面的制作，并对传感范围进行了优化设计和数据测量。
Propose a current sensing method based on FBG and electromagnet and designed relevant mechanism and circuits. measured range has been optimized and the measure data have been given.
完成了方案中相关机械、电路方面的制作，并对传感范围进行了优化设计和数据测量。
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