发现直流电阻性本质安全电路在断开过程中低能电弧放电有三种情况。
It was found that there are three types of low-energy arc discharge during the breaking process of resistive intrinsically safe circuits.
电弧:高压切换产生的RFI(射频干扰)可能会干扰高速逻辑电路。
Arcing: The RFI (radio frequency interference) generated by high voltage switching may disrupt high speed logic circuits.
推导出电感性本质安全电路低能电弧放电时间的计算公式。
Formulas of discharge time of low energy arc in the inductive intrinsically safe circuits are gained.
MW直流电弧的电流控制采用2台整流变压器控制,通过调节晶闸管桥触发角构成24脉波整流电路。
MW DC arc furnace uses the current 2-transformer rectifier bridge thyristor controlled by adjusting the angle trigger to compose 24 pulse wave rectifier circuit.
结合具体产品,对电弧螺柱焊机电路的组成和功能进行了分析,提供了常见故障原因及排除方法。
This article analyzes the structure and function of arc stud welders and the common problems and gives the ways to work out these problems.
本文介绍电弧故障断路器(AFCI)的电路部分的技术开发,包括它的硬件和软件的基本实现方法及相关内容。
The paper introduces technique development of circuit part of AFCI, including basic implementation ways and contents of hardware and software.
电弧供电采用了两种并联电路,解决了焊接电流的单一性,提供了稳定的先导电弧,保证了足够的焊接时间。
With two parallel circuits on arc powered supply, it settles the welding current unicity, stabilizes forerunner arc and ensures enough welding time.
分析了直流电路中电感和时间常数对直流电弧熄灭的影响。
The affect of inductance and time constant to DC arc extinguishing in DC circuits was analyzed.
前言:强化电弧炉的“高阻抗”模式,是至今被倡导实现“超高功率化”唯一经济合理的主电路供电结构。
The high-reactive mode of intensify EAF , is chief circuit frame of only economically advisable, which is preached to carry out, so far.
对本质安全电感电路,最小建电弧电压能反映电路的建弧特性,电流变化率能反映电路的电感特性。
For an inductive intrinsically safe circuit, minimum arcing voltage shows the arcing characteristics and current reducing rate shows the inductive characteristics.
详细介绍了高速旋转电弧传感器的旋转驱动电路、位置检测电路以及焊接电流采样电路。
The rotary driving circuit, position detecting circuit, and welding current sampling circuit of the high speed rotating arc sensor are introduced in detail.
在火花试验装置上进行爆炸试验,得到本质安全复合电路的放电波形,发现电弧电压基本维持在最小建弧电压,而电容电流随着电路参数的不同而发生振荡。
It was found that when the capacitive ignition occurred, arc voltage will keep minimum arcing voltage, but arc current possibly attenuates in sinusoidal form with different circuit parameters.
研究了电火花放电间隙状态判别电路,选择恰当的正常火花放电、电弧放电及空载比例,确定较佳伺服进给量。
The recognition circuit for EDM gap state is researched, selecting proper rate between nomal discharge, arc and blank, defining suitable servo feed.
在特士拉想办法让电弧灯搭配AC电路使用时,发现了一个崭新的基本想法并且专注其上,那便是高频电流现象。
Searching for a way to create an arc light for use on AC networks, Tesla now found a new fundamental ideal on which to focus: high-frequency electrical phenomena.
通过实验、仿真模拟和理论计算,验证了建立的电弧离子镀等离子体负载的宏观电路模型及其与等离子体微观参数间的关系是有效的。
It is validated by experiments, simulation and theoretic calculation that the macroscopical circuit model of plasma load of AIP and its relationship with microcosmic parameters of plasma is effective.
进行智能交流接触器零电流分断的研究,并实现了三相电路的微电弧能量分断控制。
Research on the zero-current-breaking control (ZCBC) for intelligent ac contactor and realize the micro-arc-energy breaking control in three-phase circuit.
基于上述三相交流电弧炉电路模型,分析了电流不对称和阻抗不对称对电弧功率的影响,并讨论了交流电弧炉三相电参数互相影响的复杂性。
The influences of the asymmetry of current and impedance on the arc voltage and power were analyzed, and the investigation complexity was also discussed.
应用自行设计的实验模型,在室温条件下,并在电阻性电路和电感性电路中,测量了金合金触点的电弧电压和电弧电流波形;
The experimental model designed was used to measure arc voltage and current waveforms of alloyed contact in resistive load circuit and inductive load circuit on the condition of room temperature;
如果将火花试验装置的电极在闭合或断开时的放电电弧看作一个非线性电阻,则可以实现电路本质安全性能的计算机辅助分析方法。
If the arc generated during the make or brake of electrodes of spark-test apparatus was regarded as a non-linear resistance, non-explosion assessing intrinsic safety method can be established.
本文提出的新型大功率混合直流接触器由闭合弹跳电弧消除电路、分断电弧消除电路和接触器本身组成。
In this paper, a new high power hybrid DC contactor is researched to slake the effect of arc for the application in the railway.
直流电路中的断路器只要依靠拉长电弧来达到游离作用。
Breakers for dc circuits rely principally on lengthening of the arc and subjecting it to demonizing effects.
通过控制逆变器输入平均电流调节负载功率,简化了电路设计;通过单片机发出高频加低频调制的半桥驱动信号,消除调光过程中的电弧不稳定现象。
A easier and low-cost power control method is proposed in this paper, based on the regulation of the average input current of the inverter.
通过控制逆变器输入平均电流调节负载功率,简化了电路设计;通过单片机发出高频加低频调制的半桥驱动信号,消除调光过程中的电弧不稳定现象。
A easier and low-cost power control method is proposed in this paper, based on the regulation of the average input current of the inverter.
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