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crystal oscillator     
相关语句
  晶体振荡器
     2.3GHz Microwave Crystal Oscillator
     2.3GHz微波晶体振荡器
短句来源
     The Microcomputer Compensated Crystal Oscillator Based on TLC320AC02I
     基于TLC320AC02I的微机补偿晶体振荡器
短句来源
     Design of Low Noise 100MHz Crystal Oscillator
     低噪声100MHz晶体振荡器的设计考虑
短句来源
     100.450 MHz 5th Overtone Temperature Compensated Crystal Oscillator
     100.450 MHz五次泛音温度补偿晶体振荡器
短句来源
     For oscillator of three-point capacitance , there should be that |F|≤|Fm| , while for parallel type overtone crystal oscillator, there should be that |F|≥|Fm|.
     对于电容三点式振荡器,应使|F|≤|Fm|; 对于并联型泛音晶体振荡器,应使|F|≥|F|。
短句来源
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  晶振
     The crystal oscillator is small in size(20.4 mm×13 mm×10 mm(DIP14))with use of SMT and mixed technology.
     利用贴装、混合工艺等使晶振的体积做到20.4 mm×13 mm×10 mm(D IP14)。
短句来源
     The SSB phase noise of the crystal oscillator is not more than -155dBc/Hz at 1kHz,and the fluctuation of FM constant is not more than±1.0dB at wide temperature range(-55~90℃).
     研制的低相噪调频晶振在1kHz处单边带(SSB)相位噪声小于等于-155dBc/Hz,宽温度范围调频指数波动小于等于±1.0dB(-55~90℃)。
短句来源
     This paper describes the establishment of the computer models of the crystal oscillator and phase-locked loop of CD7698CP.
     建立了CD7698CP中晶振、锁相环的计算机模型;
短句来源
     Design and Performance of a 5MHz Quartz Crystal Oscillator with Low Frequency Aging Rate
     低老化率5MHz石英晶振的设计和性能
短句来源
     Principle and application of analog temperature compensated crystal oscillator MAS9270
     MAS9270模拟温补晶振芯片原理及应用
短句来源
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  石英晶体振荡器
     The experimental compensating result shows that using this method the frequency-temperature stability of 100 MHz 5th overtone temperature compensated crystal oscillator can achieve ≤±2×10 -6,in the temperature range 0~70℃.
     初步补偿结果表明,利用本文提出的补偿方法进行补偿的100MHz五次泛音石英晶体振荡器在0~70℃温度范围内频率-温度稳定性≤±2×10-6。
短句来源
     A quartz crystal oscillator with 5. 12MHz serves as a basic frequency generator in the circuit and a sweep tracking low-pass filter is also used.
     电路用5.12MHz的石英晶体振荡器作为主频发生器,采用了频率跟踪低通滤波器。
短句来源
     The paper presents a small vibration-proof clock crystal oscillator, which output frequencyis 204.8 kHz and total frequency error is less than 20 × 10-6 within a temperature range of -40℃~+85℃.
     文中叙述了小型抗振石英晶体振荡器,它的输出频率为204.8kHz,在-40℃~85℃的温度范围内总频率误差小于20×10-6。
短句来源
     Design and Realization of a CMOS Quartz Crystal Oscillator
     CMOS石英晶体振荡器的设计与实现
短句来源
     The Development of the Quartz Crystal Oscillator in SDH Fiber Communication System
     光纤通信 SDH 系统用石英晶体振荡器的研制
短句来源
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  晶体振荡
     W e present a design of low power-dissipation CMOS crystal oscillator circuit,w hich can be integrated in a chip. It makes the average working current decrease from severalìA to1ìA.
     文章提出一种适于片内集成的低功耗CMOS晶体振荡电路,使得电路的平均工作电流从几μA下降到1μA。
短句来源
     The phase and amplitude balance conditions for Colpitts quartz crystal oscillator circuit are analyzed and deduced from the concept of negative resistance, which has been used to design the practical oscillator circuit and the component parameters are given.
     由“负阻”概念分析推导出Colpitts石英晶体振荡电路的相位平衡条件和振幅平衡条件,并设计具体振荡电路,给出了实际电路参数。
     The phase and amplitude balance conditions for Colpitts quartz crystal oscillator circuit are analyzedand deduced from the concept of negative resistance, which has been used to design the practical oscillator circuitand the component parameters are given.
     由“负阻”概念分析推导出Colpitts石英晶体振荡电路的相位平衡条件和振幅平衡条件,并设计具体振荡电路,给出了实际电路参数。
短句来源
     According to the basic theory of crystal oscillator circuit high frequency stability oscillating circuit is designed.
     (2)根据晶体振荡电路的设计原理,设计了稳定性高、频率可调的压控振荡电路;
短句来源
     Secondly a lot of experiments are performed with the developed crystal oscillation circuit, then serious and careful analysis are accomplished for the experiment results, it is proved sufficiently that the design is correct, and the developed high reliable crystal oscillator is up to the advanced level of China.
     其次在研制的晶体振荡电路中,进行了大量实验,然后对实验结果进行深入细致的分析,充分证明了设计的正确性,研制出的高稳定晶振达到了国内九十年代的先进水平。
短句来源
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      crystal oscillator
    High spectral purity of the signal has been obtained by servo-controlling the phase of a high frequency quartz crystal oscillator through an integrating filter with long time-constant.
          
    The stabilizing system has a 'holding range' of several megacycles which permits the sweeping of the reference crystal oscillator.
          
    A crystallization monitoring system using a quartz crystal oscillator was utilized to predict different shapes of crystal formation by measuring crystal growth rate and to measure supersaturation.
          
    Crystal shape monitoring and supersaturation measurement in cooling crystallization with quartz crystal oscillator
          
    The contribution of technical fluctuations of individual circuit components of a quartz crystal oscillator with AGC to the technical characteristics of the output signal is determined.
          
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    An integrated design of a time mark generator with high precision, high stability and high frequency was suggested. Obtained from the quartz crystal oscillator through the dividing network system as a driving source, the use of the GaAsP solid luminescent diode as the pulse light source and the use of the signal have the advantages over other methods (mechanical, neon light tubes, discharge sparking, etc.). These advantages are: light in weight, smaller in size, better in anti-seismicity and less driving...

    An integrated design of a time mark generator with high precision, high stability and high frequency was suggested. Obtained from the quartz crystal oscillator through the dividing network system as a driving source, the use of the GaAsP solid luminescent diode as the pulse light source and the use of the signal have the advantages over other methods (mechanical, neon light tubes, discharge sparking, etc.). These advantages are: light in weight, smaller in size, better in anti-seismicity and less driving power. Because the luminescence wavelength coincides well with wavelength peak of the film sensitivization curve, the time mark frequency is very high(to 30 kc/sec)and more stable. This generator is designed especially for the slit mode high-speed camera, and it can also be used for other syrchro-cameras.

    本文提出了一种高精度,高稳定度、高频率时标发生器的方案。由于采用磷砷化镓(GaAsP)固体发光管作为脉冲光源,石英晶体振荡器经分频后的脉冲信号作为驱动信号源,因而与现有的时标发生器方案比较,它具有体积小,重量轻,抗振性好,驱动功率小,发光波长与胶片感光灵敏度的一致性好,时标频率高(已达30千赫/秒),稳定度好等优点。它是专门为狭缝式高速摄影机设计的,对于其他同步相机也具有很大的实用意义。

    Voltage controlled crystal oscillator(VCXO)plays an important roll in the atomic frequency standard. The performance of VCXO must be excellent so as to maintain the inherent frequency accuracy and stability of the atomic standard. Through analysis, technical requirements for VCXO used in the cesium atomic clock are put forward in this paper.

    压控晶体振荡器是原子频标的重要组成部分。要使晶体振荡器的输出信号保持原子标准所固有的频率准确度和稳定度,所用压控晶体振荡器必须具有优良的性能。本文从分析压控晶体振荡器的技术指标对铯束频标的影响出发,提出对它的技术要求。

    Starting from analysing the basic function of the dynamic mechanism of the seismic recorder,we point out the key to fulfilling requirements for the dynamic mechanism in having a stable low-frequency oscillating source,selecting proper motor and having a high efficiency power amplifcr.The advantages and disadvantages used several types of the low-frequency oscillators in dynamic mechanism and the improving method were summed from practical tests.If crystal oscillator is used,we can revise gear to get fine...

    Starting from analysing the basic function of the dynamic mechanism of the seismic recorder,we point out the key to fulfilling requirements for the dynamic mechanism in having a stable low-frequency oscillating source,selecting proper motor and having a high efficiency power amplifcr.The advantages and disadvantages used several types of the low-frequency oscillators in dynamic mechanism and the improving method were summed from practical tests.If crystal oscillator is used,we can revise gear to get fine tuning.The selecting motor and power amplifying circuit were discussed,too.

    本文从分析地震记录器推力机构的基本性能出发,指出获得满足要求的地震记录器电动推力机构的关键在于有一个稳定的低频振荡源、选择适当的电机及有一个高效率的功率放大器。同时通过具体实验总结了几种低频振荡器在电动推力机构中应用的利弊及解决办法,其中若用晶体振荡器的时候可采用修正齿轮的办法来达到微调的目的。并对电机的选择和功放电路进行了一定的分析讨论。

     
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