查询词典 preamplifier

The 5mV of the audio signal which comes from the microphone to linear amplificated by the audio signals amplifier,then mixes with music signals from other sound sources(eg:the tape 、CD) by the hybird amplifier . By the control of the digital volume controller the mixed signal ,then amplificated again by the preamplifier,when integrated power amplifier for idling time realizes the signal enlargement factor respectively is 10、100、1000 times;moreover is capable of delivering 3V of output to a 600%26Omega; load. the amplificate signal makes the loudhailer work at last.

该音频信号放大器能够将来自话筒5mV的音频信号进行线性放大，然后和来自其他音源的音乐信号通过混合放大器来混合，混合后的信号经数字音量控制器对高低频的增益进行提升与衰减，再通过前置放大器放大，当集成功率放大器为空载的时候实现信号的放大倍数分别为10、100、1000倍；另外再实现当负载为600%26Omega；的时候，输出幅度为3V，最后经扬声器发出悦耳的声音。

SOA can be used in the dispersion compensation in fiber transmission system, all-optical regeneration, optical time division multiplexing, and used as preamplifier, in-line amplifier, boost amplifier in signal transmission. SOA can be also used as wavelength converter, optical switch. In signal procession, nonlinear optical loop mirror based on SOA can be used in optical pulse reshaping, and used as high rate (100Gbit/s) demultiplexer, and optical correlator for optical data retiming.

在信息传输方面，SOA用于色散补偿、全光再生和光时分复用和前置放大、线路放大、功率放大等；在信息交换方面，SOA用于波长转换、光开关等；在信号处理方面，SOA构成的非线性光环形镜用于光脉冲整形、光数据信号再定时的光相关器和高速（100Gbit/s）解复用等。

This external unit interfaces through a USB port and features a 1024 channel MCA with internal preamplifier, computer controlled amplifier, high voltage (0-2048V), upper and lower level discriminators and multichannel scaling for half-life and decay studies.

外置单元通过 USB 接口接电脑，1024道 MCA 和前置放大器，电脑控制放大器，高压（0-2048V ），上平和下平鉴别器和多道测量可做半衰和衰变的学习研究。

In this paper, preamplifier and main amplifier is introduced.

文内主要介绍了前置电路和主放大电路的设计。

The Audio Video Preamplifier is designed to be flexible with respect to its audio configurations, as well.

这台影音前级的音频结构设计也具有相当大的灵活性。

As a result, you will be able to enjoy the outstanding performance of the Audio Video Preamplifier for many years.

因此，您将能够享受到音频视频放大器多年的出色表现。

According to the test results,the preamplifier can operate well at the bit rate of 10Gbit/s.

测试结果表明，此前置放大器可以很好地工作在10 Gbit/s速率上。

The low efficiency has been improved for testing preamplifier of circuit board.

结合特制的调理电路设计出基于虚拟仪器技术的自动测试系统。

Essential condition for a high-End preamplifier, it is accompanied with proportional quality power supply.

完前置必要条件高，它是伴随着电力供应的质量成正比。

A modified low noise design method of CMOS charge sensitive preamplifier was proposed in this paper.

提出了一种改进的CMOS电荷灵敏前放低噪声设计方法，通过实例计算得到的噪声结果比现有方法都有不同程度的提高。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。