Step five: tune the final stage power transistor quiescent current, the current value of the power tube by measuring the voltage of the emitter resistance Converter and get.
第五步:调末级功率管的静态电流,该电流值可以经由过程测功率管的发射极电阻的电压换算而得到。
The linearity of active stages grows with increasing current or power, i. e. The more current available for amplifier stages and for LO power for mixers, the higher the linearity of the concept.
有源器件的线性度是随着电流或功率的增加而增加的,即这样一个概念:放大器级的电流越大并且混频器的本 振功率越大,那么线性度就越高。
On the basic of the rectangular current-injecting power flow algorithm and practice of power system calculation, this paper presents the polar current-injecting power flow algorithm.
在直角坐标形式电流注入型潮流算法的基础上,结合电力系统的实际,推导出了极坐标形式的电流注入型潮流算法。
Measure function: can measure current, voltage, active power, reactive power, frequency, zero sequence current, electric energy, 2 pulse inputs implement watt-hour meter auto read;
测量功能:高精度测量电流电压、P、Q、功率因数、频率、零序电流、计算电度;2路脉冲量输入实现外部电度表自动抄表;
A critical current mode based on the peak current control technology to achieve switching power supply power factor correction task is proposed.
提出了一种基于临界电流模式的峰值电流控制技术来实现开关电源的功率因数校正任务。
At present power converters of DC driving system make power supply outputs a high-frequency pulsating current, which is from zero to the armature current. This large ripple damages batteries.
目前国内外电动车直流驱动功率变换器使储能电源输出电流从零到电机电枢电流高频脉动,不利于延长动力电池的使用寿命。
For compensating reactive power and harmful currents in low voltage power system, the paper proposed two control schemes for STATCOM, which are indirect-current control and direct-current control.
本文针对低压配电网络的无功补偿和有害电流滤除问题,提出采用间接和直接电流控制两种STATCOM方案。
The alternate current line side realizes the decoupling control of active power and reactive power through double closed loop and the stability of direct current voltages at the same time.
交流电网侧通过双闭环控制,实现有功功率和无功功率的解耦控制,同时具有稳定直流母线电压的能力。
Usually, power nanocrystalline current transformer cores are used in high voltage, high current generator factory, safe-quick measurement and protective relaying in power station.
通常,它们应用于高压、大电流发电厂和变电站安全快捷的测量和继电保护。
The intelligent metering device for direct current power consumption is a practical metering and managing device for direct current power consumption in electrolytic aluminium plant.
该智能装置是国内电解铝厂电解车间一种实用的直流电耗计量管理装置。
At present, iontophoresis apparatus is a method that direct current power supply, or pulse electric current power supply.
目前,电离子导入仪主要采用的是直流电激励导入,或是脉冲电导入的方法。
The function of the power supply is converting the alternating current provided by the power plant into direct current required by normal computer system.
电源供应器主要是用来将发电厂提供的交流电转变为一般电脑系统所需求的直流电。
The function of the power supply is converting the alternating current provided by the power plant into direct current required by normal computer system.
电源供应器主要是用来将发电厂提供的交流电转变为一般电脑系统所需求的直流电。
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