查询词典 amplifier

Since the early 20th century emergence of the original 60-type amplifier, the amplifier has been to lower the drift, noise and power consumption, higher speed, gain and input voltage, as well as the development of greater output power.

自20世纪60年代初出现原始型放大器以来，放大器一直在向更低的温漂、噪音和功耗，更高的速度、放大倍数和输入电压，以及更大的输出功率发展。

The discussion covers: 1、By theoretical analysis on the measurement circuit of the piezoelectric accelerometer, a optimization design for charge amplifier is proposed which uses TL081 to replace a largenumber of discrete components. The design not only improve the integration of the circuit, but also have some extra merits, including smaller volume, lower consumption, less autoeciousness and stronger resistance to interruption. 2、Affiliated conditional circuit and filter to the devised charge amplifier, the signal is normalized and the noise ( generally, high frequency signal and DC signal) are restrained.

论文完成的主要工作如下： 1、通过对压电加速度传感器测量电路的理论研究，提出用TL081芯片取代大量的分离元件进行电荷放大器的优化设计方案，从而提高了电路的集成度，使其具有体积小、功耗低、寄生因素少和抗干扰性能强的优点。

The 92HD83 single-chip audio system is a low power optimized, high fidelity, 6-channel audio codec with integrated speaker amplifier, dual capless headphone amplifier, and low drop out voltage regulator.

IDT公司的92HD83是六路PC音频系统方案，具有最佳的功耗，集成了六路音频CODEC和扬声器放大器，双路无电容的耳机放大器和低压降电压稳压器。

Low γ ray with 59.6keV energy acts as excitation for rare earth inaqueous and organic phase samples in separation processes by solvent extraction. As aresult, characteristic K series X-ray fluorescence of rare earths emitted. X-ray wasdetected by high purity planar Ge after transmitting Be window. The signals wereamplified by pre-amplifier or main amplifier, and the amulated signals are converted todigital ones.

对溶剂萃取法生产稀土流程中的有机相和水相试样，采用放射性核素〓的59.6keV单色能量激发稀土元素，得到特征K系X射线荧光，透过Be窗经高纯平面锗半导体探测器检测其强度，再经放大器、模数转换和多道缓冲存诸记录试样的能谱。

Power amplifier has high request for signal nondistortion, waveshape precision, output power, and function stability. Therefore, Power amplifier is a technical difficulty in the design of relay protection testing device.

功率放大器在信号不失真、波形精度、输出功率、运行稳定性等方面都有较高要求，因此是继电保护测试仪设计中的一个技术难点。

To transmit high speed pulse, limiting amplifier must have enough bandwidth. So a research about CMOS broadband amplifier, supported by Octillion Communications Inc.

为了在接收机前端CMOS芯片中传输极其高速的数据如OC—96和OC—192标准，需要克服的瓶颈之一是获得高速的限幅放大器。

From the experiment discovered for the first time the dimethyl ether may substitute CO to take the chain-carrying agent of the peroxy free radical chemistry amplifier system, and optimized the CH_3OCH_3-NO-HO_2 chemistry amplifying system determination condition, the CH_3OCH_3 best density is 1.876 ppmv, the NO best density is 1.3ppmv, and obtained this method chain length CL=124, 5 parallel determinations densities of HO_2 are the 44.0pptv, the relatively standard deviation is smaller than 4%; Although chemistry box model computed result indicated the dimethyl ether, the ethene, the propene and the ethanol all can take the chain-carrying agent of the peroxy free radical chemistry amplifier system, and their simulation chain length all grows up compared to the CO-NO-HO_2 chemistry amplifying systems, but experiments proved the ethene, the propene and the ethanol have not suit the chain-carrying agents.

首次从实验上发现二甲醚可以替代CO作为过氧自由基化学放大系统的链传递试剂，并优化了CH_3OCH_3-NO-HO_2化学放大系统的测定条件，CH_3OCH_3的最佳浓度是1876ppmv，NO的最佳浓度为1.3ppmv，并得到了这一方法的链反应长度(CL=124)，5次平行测定浓度为44.0pptv的HO_2自由基，相对标准偏差＜4％；虽然化学盒子模式计算结果表明二甲醚、乙烯、丙烯和乙醇都能作为过氧自由基化学放大系统的链传递试剂，并且它们的模拟链长都比CO-NO-HO_2化学放大体系的链长大，但是实验证明乙烯、丙烯和乙醇不适合作为过氧自由基化学放大系统的链传递试剂。

The laser diode system is composed of three external cavity diode lasers and four injection diode lasers and a tapered amplifier. Four laser beams as 40K and 87Rb cooling and repump lights are obtained by using acoustic optic modulators to offset the frequencies from the three ECDL lasers. Four light beams with the different frequencies are injected into four slave lasers for injection locking, then Rb cooling light, K cooling light and K repump light are injected into a semiconductor tapered amplifier in a master oscillator-power configuration.

采用三台外腔光栅反馈半导体激光器、四台注入锁定激光器和一台半导体激光放大器组成激光系统，三台外腔光栅反馈半导体激光器通过声光调制器产生四束光，分别作为40K和87Rb原子的冷却光和再抽运光，四束不同频率成份的激光分别注入锁定四台从激光器，然后Rb cooling光、K cooling光和K repump光再同时注入半导体激光放大器进行放大。

The principle here is to resistively load down the OUTPUT of the AMPLIFIER for frequencies in the vicinity at which peaking occurs—thus snubbing down the AMPLIFIER 's gain, then use series capacitance to decrease the loading at lower frequencies.

从频率上看已经超出负载电容的影响范围了，而且，在这个频率下CL的阻抗可能已经大大改变了。

Two Rugate filters for compensating gain narrowing are designed separately based on the gain characteristics of Ti: sapphire amplifier and Nd: glass amplifier. The Gauss spectral shaping function is selected as the compensation modulation function.

采用Rugate膜系理论，分别根据钛宝石和钕玻璃介质增益窄化的特点，合理选择补偿增益窄化的调制函数，优化设计出了分别用于补偿钛宝石系统和钕玻璃系统增益窄化效应的Rugate滤波器。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。