查询词典 preamplifier

An on-chip Automatic Gain Control circuit controls the gain of this preamplifier from -15 to 24 dB.

片上自动增益控制电路控制，从这个前置放大器增益-15至24分贝。

Automatic gain control circuits are implemented to control the preamplifier stages in the AM and FM reception paths.

自动增益控制电路实施控制在AM与FM接收路径的前置阶段。

It consists of a bridgeable divide-by-8 prescaler with an integrated preamplifier, a 15-bit programmable divider, a crystal oscillator and a reference divider with two selectable divider ratios (512 / 1024), and a phase/frequency detector together with a charge pump which drives the tuning amplifier.

它包括一个集成前置放大器，一个15位可编程分频器，晶体振荡器和一个带有两个可选分率（512 / 1024），和相位/频率检测器连同参考分频器的弥合的分频8预分频器电荷泵的驱动器调谐放大器。

The test result showed that the preamplifier could work at the temperature of 100K, its feedback resistance was about 10^6Ω, the equivalent input noise current was 0.03pA/Hz(superscript 1/2) and the power consumption of one cell was less than 1mW. This preamplifier could work well when connected with JR detectors, and the system had good linearity.

经测试，这种前置放大器在深低温下能正常工作，反馈电阻大小为兆欧级，等效输入噪声电流仅0.03pA/Hz(上标 1/2)，单元功耗小于1mW，与红外探测器连接后工作正常，线性度较好。

In this paper, problems and related technical measures about structure of acquisition system, preamplifier , power and earthing, which must be considered in designing foreside of high-speed data acquisition system, are discussed.

研究了关于高速数据采集系统前端设计时需考虑的结构、前置放大器、电源和接地等问题及其相应的技术措施，从而为设计高性能的高速数据采集系统提供参考。

Based on the optical configuration of laser facility prototype,a precise energy control program of preamplifier system using half-plate and polarizer was fixed.

基于原型装置的光路设计，确定了采用半波片和偏振片实现对预放系统输出能量的精密控制的方案，并对该方案进行了流程设计和系统集成。

While the most important characteristics of the electrometer voltmeter operational amplifier are low input offset current and high input impedance, the most important requirement for the nanovoltmeter input preamplifier is low input noise voltage.

静电计电压表使用的运算放大器，最重要的特性是低输入偏置电流和高输入阻抗。纳伏表输入前置放大器的最重要的要求，则是低输入噪声电压。

An electrometer preamplifier is used at the input to increase sensitivity and raise input resistance.

在其输入端采用一个静电计前置放大器以提高灵敏度并提高输入电阻。

Compared with Inverting Input Composite Preamplifier in the commercial QMS,the NIICP can reduce noise by 5%～30% in the 106～107 V/A magnification,and can expand signal bandwidth by 1.8 times and increase MS peak amplitude by 10%～15% in the 108 V/A magnification.

实验结果表明：与反相输入复合放大器相比，同相输入复合放大器在106～107V/A放大时能降低5%～30%噪声，在108V/A放大时可扩展带宽1.8倍并提高10%～15%质谱峰强度。

The preamplifier which functions as a digital AV control center which does not perform any signal magnification as a preamplifier, but unifies all program sauce other than Phono.

前置放大器的作用是作为一个数字影音控制中心不执行任何信号的前置放大器放大，但所有程序统一调味以外唱机。

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。