This model consists of a noise current source I n1 at the input and another, I n2, at the output.
将这些理论应用到光纤通信接收机前置放大器的噪声计算上，用统一的方法，算出了光接收机BJT和FET前置放大器的等效输入端噪声电压电流功率谱，供光接收机设计使用
In the AC servo control system, using digital low-pass filter can restrain current feedback noise and improve the resolving power of speed feedback, but it may lead to phase lag of feedback signal and directly influence the response speed.
交流伺服控制中采用数字低通滤波可以抑制电流反馈噪声，提高速度反馈分辨率，但同时会带来反馈信号的相位滞后，将直接影响响应速度。
Aiming at low reliability in short-time energy analysis method for on-line monitoring of circuit breaker mechanical state, the paper studies the method to eliminate interference noise by using trip coil current signal to improve the reliability of short-time energy analysis method.
针对单独利用短时能量分析法在线监测断路器机械状态时可靠性较低的缺点，该文研究了利用脱扣线圈电流包含的信息来排除机械干扰信号带来的影响，从而提高断路器三相同期性在线监测的可靠性。
GHZ low noise amplifier is applied for ultra-wideband, it introduces RC feedback with series inductive peaking for input matching. And current buffer is used for output matching. This research is fabricated in 0.18-μm CMOS process.
本论文研制一个应用於超宽频3.1-10.6 GHZ的低杂讯放大器是采用电阻-电容回授串接电感做输入匹配，而在输出端是用current buffer做匹配。
In particular, flows through the throttling or pressure valve, cross-sectional mutation or rapid-bend of the elbow pipe when the fluid turbulence with these obstacles through the part of the interaction of eddy-current noise, the sound power level vs.
尤其流经节流或降压阀门、截面突变的管道或急骤拐弯的弯头时，湍流与这些阻碍流体通过的部分相互作用产生涡流噪声，其声功率级随流速的变化关系可表示为：△Lw=60lg，若管路设计不当还可以产生空化噪声； 2、再说阀门，带有节流或限压作用的阀门，是液体传输管道中影响最大的噪声源。
In all cases, this excess noise is directly proportional to the current through the resistor.
在所有这些情况下，此过量电流噪声都直接正比于流过电阻器的电流。
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Johnson noise current goes down with a increase in resistance.
Johnson噪声电流随着电阻的增加而降低。
All real voltage and current sources contain an internal resistance; therefore, they exhibit Johnson noise.
所有真实的电压源和电流源都具有内阻，所以它们都表现出约翰逊噪声。
Soft transient control reduces inrush current and audio noise.
软瞬态浪涌电流控制和降低音频噪声。
The flow field around the wing with deployed high lift devices is three-dimensional, viscous and with the complex vortex motion. It is difficult to model the sound field of wing noise sources by the numerical calculation of aerodynamic equations with the current computer condition and numerical scheme.
本文的结果表明襟翼侧缘宽频噪声主要是由于湍流脉动在襟翼侧缘处形成的非定常通量产生的；一个意想不到的结果是，在襟翼侧缘噪声谱中发现了两种不同性质的单音噪声，一种是典型的后缘噪声源，而另一种单音噪声源具有与上述单音相反的指向性。
The AS3645 is an inductive high efficient DCDC step up converter with two current sources. The DCDC step up converter operates at a fixed frequency of 2MHz and includes soft startup to allow easy integration into noise sensitive RF systems.
Austriamicrosystems公司的AS3645是超小型高效单/双路LED闪光驱动器，它的DC/DC升压转换器工作频率高达2MHz，具有软起动功能，闪光停止，过压，超稳，欠压和LED短路保护功能。
At these bases, we discuss the Correlated Double Sampling elaborately. At the same time, we analyze and contrast a few current methods of restrain noise.
在此基础上，对相关双采样技术进行了详尽的探讨，对现有的几种抑制噪声的方法进行了分析和比较，对各种方法从理论上进行了深入分析，指出了各自的优缺点及适用范围。
For the current-reversal method to be effective, it's important to use a low noise voltmeter with a response speed that is fast compared with the thermal time constant of the circuit under test.
为了使这种电流反向法有效，很重要一点是要使用响应速度比被测电路的热时间常数更快的低噪声电压表。
Research in time domain indicates that the effect of turn-on angular on phase current, shearing force and radial force is more significant than that of turn-off angular in APC and that if chopping frequency and speed is increased and duty is reduced in voltage-PWM, then phase current, shearing force and radial force are reduced, resulting in the reduction of vibration and acoustic noise. Research in frequency domain indicates that in APC and voltage-PWM, little modulation of controlled parameter can modify the spectrum of phase current, shearing force and radial force.
时域研究表明，角度位置控制方式下，开通角对电流和电磁力的影响大于关断角的作用；电压PWM控制方式下，斩波频率和转速的增大、占空比的减小使电流有效值和平均电磁力减小，降低了电机的振动和噪声；频域研究表明，角度位置控制方式和电压PWM控制方式下，控制参数的微调可以引起电流和电磁力频谱的变化，因此可以方便地调节控制参数以避开定子固有频率，避免谐振引起的振动和噪声。
The socket structure is provided with a zero phase trigger control unit, through the photoelectric sensing element of the unit, optical coupling can be performed to generate zero phase trigger, and the opening or the closing of a two-way thyratron in the zero phase can be accurately controlled, therefore, an electric device inserted on an output socket can be started or stopped from the zero phase, in order to reduce the electromagnetic interference and prolong the service life of the electric device, the use efficiency of the electric device can be enhanced, the power supply thereof can be saved, filtering and rectifying can be performed through a current switching unit when the alternating current power supply passes through a filtering and rectifying circuit, the noise caused by external interference and affect can be filtered, and the power supply can be respectively transmitted to a current detecting socket and the input end of the current switching unit to be detected through a temperature sensor arranged on the current switching unit.
本实用新型为有关一种插座结构，尤指为设有零相位触发控制单元，可通过其光电感测元件来进行光耦合而产生零相位的触发，且可准确控制双向闸流阀在零相位的开启或者关闭，进而达到插置于输出插座上的电器装置从零相位开始启动或者关闭，以降低电磁干扰而延长电器装置使用寿命，且可提升电器装置的使用效率及节省电源，并通过电流转换单元于交流电源通过滤波整流电路进行滤波整流，可滤除外部所干扰影响的杂讯，并分别传送至电流侦测插座及电流转换单元的输入端，而可通过电流转换单元所设置的温度感应器来进行侦测，于电路温度升高时，温度感应器可进行切断双向闸流阀的电源输出而达到保护输出插座上所插设的电器设备。
Noise radiation is limited by control of the output current slew rate.
噪声辐射受到限制的输出电流转换率控制。
With high input IP3 of the LNA effectively reducing the noise of the cross-modulation; low gain mode, LNA is bypassed, to provide higher currents at lower cascade input IP3; call state, low current high-gain mode.
具有高输入IP3的LNA有效降低了强噪声干扰下的交叉调制；低增益模式下，LNA被旁路，能够以较低的电流提供较高的级联输入IP3；呼叫状态下，采用低电流、高增益工作模式。
The device includes on-chip Hall voltage generator for magnetic sensing, the error amplifier that amplifies the Hall voltage, a comparator that is to provide switching hysteresis for noise rejection, the bi-direction drivers for sinking and driving large current load, and the frequency generator thatprovides a signal proportional to rotation speed.
该器件包括片上大厅为磁场传感，误差放大器，放大的霍尔电压，比较器是提供切换噪音抑制滞后电压发生器，双向驱动的吸收和大电流负载，频率方向司机发电机提供了一个信号，转速成正比。
In the flashing potential the current reversal occurs with the increase of colored noise strength.
当势垒闪烁时，对于色噪声来说几率流会随着噪声强度的增加而反转。