查询词典 adder amplifier

Technically, the damping factor is the specified load impedance( in use, that'd be the speaker system ) divided by the amplifier's output impedance.

技术上，阻尼因子就是指定的负载阻抗（践中，也就是扬声器系统）以放大器的输出阻抗。

The gating pulse module includes high-speed signal amplifier, FPGA delayer and controllable delayed transmission-line.

选通脉冲模块由高速信号放大、FPGA延时、可控延迟传输线三个部分组成。

They are the Experimental Study On Using Lock-in Amplifier As Spectrum Analyzer and the Experimental Study On Using Single-photon Counting Experimental System for Measuring Diaphaneity.

它们分别是锁定放大器用作频谱分析仪的实验研究和单光子计数系统用作透明度测量的实验研究。

Because resistance is not very precise in the testingmagnetorquer device,differential amplifier circuit is not very symmetrically.

在磁力矩器测试设备中，要求电源的电压是可变的，再加上电阻的实际阻值和标定的阻值之间存在误差，造成差分放大器的正负端的不对称。

This paper theoretically studies the design of the negative coefficient fourfold differential circuit formed by single operational amplifier.

从理论上研究了单块集成运算放大器构成的负系数四次微分电路的设计，着重分析了该电路的直流误差，并给出了电路的设计公式。

The differential amplifier circuit is an extremely popular connection used in IC units.

在集成电路单元中，差分输入级是通常的连接方法。

A two-point measurement method is employed in which two known values of a differential input voltage are applied to the current-sense amplifier.

阿二点的测量方法是采用在两个已知的差分输入电压值应用到电流检测放大器。

The cutoff frequency is 264 MHz. OTA (Operational Transconductance Amplifier) is realized in pseudo differential topology to maximize the linearity of the filter. Architecture of transconductance enhanced source degeneration is adopted for the VGA to control the gain, together with a source degeneration capacitance to widen the bandwidth.

滤波器采用5阶Chebyshev近似、GC biquad结构，转折频率为264 MHz，OTA采用伪差分结构以提高滤波器的线性度；VGA采用跨导增强型源级负反馈结构来控制增益，并加入源级负反馈电容进行高频补偿以拓展带宽。

According to the demand of high magnetic field power supply, reference is increased with a set ramp rate and stops at a set stable value, so reference system is composed of digital setting and digit to analog converting circuit. But the stability of reference is mostly guaranteed by the performance of D/A circuit, so D/A circuit is particularly studied in reference system. The scheme of D/A circuit, the selection of DAC and its voltage reference, hardware anti-jamming design and PCB design are discussed in detail, and software of remote control and PLC are discussed in brief. Zero-flux DC current transformer well satisfies the demands of the high stability of Load current detection unit, so the principle of zero-flux DC current transformer is analyzed; in the mean time a project which detects the long term stability is designed. During 8 hours, analog signal which is detected with high precision digit multimeter is recorded in computer at 1HZ frequency by GPIB communication. The drift error source and related parameters are explained in the compare-amplify part. Detailed subtraction circuit is designed; also amplifier chip and periphery components are selected and verified according to the theory of error analysis.

根据强磁场电源的需求，参考源应按照软件设定的斜率逐渐上升到设定稳态值，则参考源系统应由数字给定和数模转换电路两大部分组成，而参考源的稳定度主要依靠完成数模转换功能的模拟电路的性能来保证，因此本文对参考源系统的研究以数模转换电路为重点，分别从电路方案的确定、数模转换芯片及其基准电压源的选取和验证、电路板硬件抗干扰和PCB设计几方面进行了论述，然后对数字给定部分的远控组态和PLC程序设计作了简要介绍；采用零磁通原理的直流电流转换器很好地满足了对负载电流检测单元高稳定度的需求，本文详细分析了零磁通检测的原理，并在选定此种类型电流转换器的基础上设计了一套检测长期稳定度的方案，8小时内以1秒为采样周期，通过计算机Labview程序和高精度数字电压表的GPIB通讯，将被高精度数字电压表数字化后的模拟信号采样值连续记录至计算机中；比较放大环节简要阐述了漂移产生的原因和相关参数指标，确定了具体的减法电路形式，并根据误差分析理论对运算放大器和外围元器件进行了选取和验证。

LANYA ADP-018BT stereo is fit for any notebook PC and portabler fixtures with LANYA and help enjoy dimensional sound music by 2.0 amplifier output without connecting to other multimedia. Introducing LANYA V2.1+EDR and woking on 2.4G ISM frequency range, the acoustics is provided with as three times of 2.1Mbp data transmission rate as common LANYA technic, and its dictance of non-obstacle straightaway transmission is 10 meter with a lower degree of distortion.

ADP-018BT立体声蓝牙音响适用于笔记本电脑和带蓝牙的便携设备，使多媒体产品不用连接线便能欣赏2.0功放输出的立体声音乐，本音响采用蓝牙V2.1+EDR，工作在2.4G ISM频段，具有2.1Mbps的数据传输速率，是普通蓝牙技术的三倍，直线无障碍的传输距离为10米，音质好，失真度低。

If you were not , and OS X just booted normally, have no fear.

如果你没有，和OS X刚刚启动通常，没有恐惧。

I only want to preserve our all .

我只想保存好我们的一切