lock in amplifier
锁相放大器：一种可以从干扰极大的环境中分离出特定载波频率信号的放大器。
常用释义
英式发音
美式发音
基本释义
- 锁相放大器：一种可以从干扰极大的环境中分离出特定载波频率信号的放大器。
例句
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1·A method of implementing digital lock in amplifier with DSP (digital signal processor) and sampling ADC (analog digital converter) is discussed.探讨了用DSP(数字信号处理器)和采样adc(模数转换器)实现数字锁定放大器的一种方法。
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2·By using a double phase lock in amplifier to measure the AC strain, the measurement error can be decreased to 0.4% of the total measurement range.如果使用双相位锁相放大器测量交变的被测量，误差将减小到全量程的0.4%以内。
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3·This paper describes a method of suppressing correlation jamming at the frequency of reference signal which cannot be suppressed by lock-in amplifier and Boxcar integrator.锁定放大器和取样积分器都不能抑制与参考信号同频率的干扰。 本文提出了一种能抑制这种干扰的方法。
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4·The optical signal was amplified by a lock-in amplifier.光信号用锁定放大器放大，进行动态测量。
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5·A measurement system for gas dynamic concentrations based on TDLAS was constructed by using an auto-balanced photo receiver and a digital lock-in amplifier.基于自平衡激光接收器和数字锁定放大器构造了TDLAS汽车尾气动态浓度测量系统。
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6·A lock-in amplifier is used to supply the driving signal and to detect the output signal corresponding to the sample's strain.使用锁相放大器提供驱动信号，并同时检测对应于样品形变的输出信号。
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7·It USES a lock-in amplifier for testing the signal and a personal computer for automatic data scanning, collecting and processing.利用锁相放大器追踪测量信号，微机自动扫描、采集和处理数据。
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8·By narrowing the bandwidth of the signal and amplifying it by a lock-in amplifier, the fluctuating components of the signal can be shown on an oscillograph with lock-in amplifier.锁相放大技术对被测信号进行窄带放大，锁相放大器结合示波器输出了被测信号的周期变化部分，实现了光热法测量中微弱信号的测量。
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9·The measurement system of magnetomechanical coupling coefficient for giant magnetostrictive materials has been built by using a lock-in amplifier, according to the measurement theory.根据磁机械耦合系数的测量原理，利用锁相放大器建立了磁机械耦合系数测量系统，并应用该系统测量了巨磁致伸缩材料的磁机械耦合系数。
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10·Used lock-in amplifier SR844 for hardware phase detection and compared with software detection.利用锁相放大器SR844对产生的信号进行模拟鉴相，并同软件鉴相结果比较分析；