电压增益

Transmit Softclipping Time Constant Receiving Input Sidetone Network Input Line Current Regulation Stop Value Microphone Input Microphone Input Transmit Gain Adjustment Transmit and Receive Part Power Supply Ground Line Current Source Power Supply Voltage Stabilizer Positive Line Unregulated Microcontroller Power Supply Receive Gain Adjustment Negative Earphone Output Positive Earphone Output Ringer Buzzer Output Ring Power Supply Reset Power On Ring Indicator Oscillator Input Mask, Ring Melody Input Data Input Data Clock Input Microcontroller Stabilized Power Supply Reference Voltage (VCC/2) DTMF Filter

1第1页，本页显示记录1-8，共8条记录分1页显示发送Softclipping时间常数接收输入侧音网络输入线电流调节停止价值麦克风输入麦克风输入发射增益调整发送和接收部分电源地线电流源电源稳压器的正电源线无管制的单片机接收增益调整负耳机输出耳机输出正林格蜂鸣器输出电源供应环环指标振荡器输入掩码电复位，环旋律输入数据输入数据时钟输入单片机的稳定电源参考电压（Vcc / 2）双音多频滤波器

Parameter RESOLUTION Offset Error Gain Error Differential Nonlinearity Integral Nonlinearity TEMPERATURE DRIFT Offset Error Gain Error POWER SUPPLY REJECTION RATIO ANALOG INPUTS1 Differential Input Voltage Range Differential Input Resistance Differential Input Capacitance Input Bandwidth VSWR 2 POWER SUPPLY 3 Supply Current IAVCC (AVCC = 5.0 V) IEVCC (EVCC = 3.3 V) IVDD (VDD = 3.3 V) Total Power Dissipation 4

参数解决方案偏移误差增益误差微分非线性积分非线性温度漂移偏移误差增益误差电源抑制比1模拟输入；差分输入电压范围差分输入电阻电容输入带宽差分输入电压驻波比2电源3电源电流IAVCC（AVCC = 5.0五）IEVCC（EVCC = 3.3伏） IVDD（VDD的= 3.3伏）总功率耗散4

A digital AGC circuit using a digital potentiometer to rep lace the feedback resistance of the amp lifierwas designed. In order to get an app rop riate gain, MCU adjusted the resistance of the digital potentiometer automatically according to the voltage value of amp lifierps output.

为使输入信号不受这一限制，设计了一种数字式自动增益放大电路，该电路采用数字电位器取代放大器的反馈电阻，单片机根据放大器输出电压自动调整数字电位器的阻值来调节放大器增益，使输出电压始终维持在所设定的上下限电压之间。

Simulation results show that the Filter and VGA system has gain of 6~48 dB, variable gain of 42 dB,6 dB/Step, THD54 dBc at 100 mV peak-to-peak input voltage, IIP3 of-6.35 dBV. The NF is less than 25 dB and current dissipation is 30 mA from 1.8 V voltage supply.

电路的仿真结果表明滤波器和VGA系统的增益为6~48 dB，可变增益为42 dB，6 dB/step，在输入电压峰峰值为100 mV时THD小于-54 dBc，线性度为-6.35 dBV，噪声系数在通带内小于25 dB，消耗电流为30 mA。

Based on the rigorous analysis of the kinetic process of both primary and secondary electrons, the related surface charges were analyzed, and the energy gain of emitted electrons was proportional to the square of the ratio between the tangential and normal component of electric field. In this process, the image force of mirror charges would result in an energy loss. Meanwhile, the effect of field alternation of power frequency ac voltage on electron movement could be ignored.

在前人工作的基础上，进一步严格推导了场致一次发射电子和二次电子的运动方程，分析了电子发射引起的绝缘材料表面带电，表明电子发射后的能量增益正比于场强的切向与法向分量比值 F /// F ^的二次方；同时考虑了在电子发射和运动过程中电荷镜像力的作用，并探讨了交流电压下表面带电的情形，认为当考虑电荷镜像力的作用时，电子的能量增益可能变小，而工频交流电压下电场交变对电子运动的影响可以忽略。

Depending on the external connections, the internal resistor network may be used to provide either a fixed gain of +2 video buffer or a gain of +1 or C1 voltage buffer.

根据不同的外部连接，内部电阻网络可以用来提供任何视频缓冲器的2 +1或1或C1的电压缓冲器增益固定增益。

First of all, the circuit output waveform in the case of losing it by measuring the input voltage and output voltage in order to detect amplification of analog circuits, and then by adjusting the frequency of AC voltage source to reduce the output gain make 3db analog circuits in order to measure the maximum cut-off frequency, pass band can be obtained.

本电路首先在输出波形不失真的情况下通过测量输入电压和输出电压从而测出模拟电路的放大倍数，然后通过调节交流电压源的频率使得输出增益减少3db从而测量出模拟电路的上限截止频率，即可求出通频带。

The effects of temperature on the Early voltage and the current gain of the 4H-SiC BJT are investigated.

通过考虑缓变基区4H-SiC BJT电流增益及器件内4种载流子复合过程，计算了4H-SiC BJT的厄利电压，分析了Early电压及电流增益的温度特性。

The charge pump can output a step-up and a step-down voltage simultaneously with a high driving capability.The multiple gain pair technique was introduced to enhance its efficiency.The proposed co-use technology for capacitors and switch arrays reduced its cost.

该电荷泵能同时提供具有驱动能力的升压和降压模式电压输出，且可实现可变增益组合，以便根据检测到的输入电压自动调整增益组合以提高工作效率。

This paper presented the main functions and characteristics of Multisim8.0, and the main qualities of high frequency tunable amplifier such as voltage gain, transmission bands and selectivity were studied using simulation analysis and testing technologies of Multisim 8.0. The results are visual and precise, and prove the theory very well. This software has powerful simulation and analysis function, by which the analysis and design of high frequency circuit are not only more precise and credible, but also more closed to the real circuit running status.

本文介绍了Multisim8.0仿真软件的主要功能及特点，并结合该软件对高频单调谐放大电路的电压增益、通频带、选择性等主要质量指标进行了测试与仿真分析，结果直观、精确，很好地验证了理论，表明该软件有强大的仿真和分析功能，在实现高频电路分析和设计方面不仅高效、可靠，而且具有逼近真实电路的效果。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。