Current sources are most useful in modeling the behavior of transistors.
电流源在模拟晶体管特性时极其有用。
In the case of transistor current sources, impedances of a few megohms (at DC) are typical.
在晶体管电流源情况下，一(在直流)数兆欧阻抗典型。
All real voltage and current sources contain an internal resistance; therefore, they exhibit Johnson noise.
所有真实的电压源和电流源都具有内阻，所以它们都表现出约翰逊噪声。
Various errors of an operational amplifier can be substituted by equivalent error voltage or current sources.
运算放大器的各种误差都可以用等值的电压源或电流源来代替。
The same remarks for the ideal voltage source in nodal analysis apply to ideal current sources in loop analysis.
关于节点分析法中理想电压源的附注同样可以应用到回路分析法中出现理想电流源的情况。
With 9 billion or 10 billion people, rising consumption will overwhelm any efficiency, as well as our current sources of energy.
90亿或100亿人口所引起的消耗增长将压倒一切有效利用，我们当前的能源资源也是如此。
The earliest IC op amp OUTPUT stages were NPN emitter followers with NPN current sources or resistive pull-downs, as shown in Figure 1.6.
最初的集成运算放大器的输出级是NPN电流源的NPN放射追随器或通过电阻下拉，如图1.6所示。
By paralleling the respective input pins of more ICs, the connected internal voltage-to-current sources easily operate in parallel (Figure 1).
通过并联更多IC各自的输入引脚，连接内部电压电流源容易并联工作(图1)。
Figure 1 ideal current sources in circuit theory, an ideal current source is a circuit element where the current through it is independent of the voltage across it.
图1理想电流源在电路理论，理想电流源电路元件的电流通过时与其两端的电压无关。
Fundamental current source consisted of integrated amplifiers of power and operation, and by means of parallel fundamental current sources obtained high - current output.
由集成功放和运放组成基本电流源，并用基本电流源的并联来获得大电流输出。
The apparatus includes a digital voltage measuring circuit controllably coupled to selected ones of the voltage measurement electrodes and digitally controlled current sources.
该设备包括数字电压测量电路和数控电流源，所述数字电压测量电路可控地连接至所述多个电压测量电极中的选定电极。
The current low fossil fuel price environment will thus certainly delay the energy transition from fossil fuel to clean energy sources.
因此，当前化石燃料价格较低的环境必然会推迟从化石燃料向清洁能源转型的过程。
Current exposure sources include lead paint, folk remedies, glazed pottery, soil and drinking water in some urban areas with older housing.
目前仍然存在的暴露源包括：铅涂料、民间偏方、陶器、郊区的土壤和饮用水。
Dark matter and dark energy, the sources of many current open questions in astrophysics, will figure in many space-based stories and some planet-based ones.
暗物质和暗能量，当前天体物理学中许多未解之谜的源头，将出现在很多发生在太空和外星的故事中。
We cannot evaluate quantitatively the relative importance of these mechanisms because measurement of these parameters is not feasible with current data sources.
由于受现有数据来源的限制，我们当前尚无法量化地评估这些社会因素的在避免灾难方面的重要程度。
There is also scepticism about whether wind, solar and other alternative power sources are capable of offering a significant replacement for current energy sources.
对于风能、太阳能和其他的可转化能源是否能作为当前能源的大量替代品存在质疑。
The EQ-36 faces competition from several sources, but current Firefinder operators have already shown interest in the EQ-36.
EQ-36雷达面临着来自几个方面的竞争，但目前火力定位操作人员已经显示出对EQ-36雷达的浓厚兴趣。
Data source: clear definition of current available business and external data sources and future data sources if possible.
数据源：当前可用的业务数据源和外部数据源以及将来可能存在的数据源的清晰定义。
In the README.txt file that comes with Grester, the extension.groovy is mentioned, but it should be noted that there is no current support for using Grester against Groovy sources.
在Grester附带的README. txt文件中提到了扩展名. Groovy，但是应当注意的是，目前没有对Grester的支持。
Data sources can be configured to use integrated security so that database connections are made using the current user's account.
可以配置数据源使用集成的安全性，以便可以使用当前的用户帐户进行数据库连接。
The current release of these indicators and their data sources represents the largest publicly available data resource on governance in the world.
目前公布的这些指标及其数据来源是世界上最大的公开的治理数据库。
A strong network allows you to get advice from trusted sources, to keep your professional knowledge current, to find career opportunities, and to support the careers of others.
一张强大的关系网可使你获得可信的建议，可使你的职业信息保持畅通，让你有机会找到工作，还可以支持别人的职业生涯。
The models are based on weather, ocean current and spill data from the U.S. Navy and the National Oceanic and Atmospheric Administration, among other sources.
这些数据模型是根据天气，洋流和美国海军和美国国家海洋和大气局提拱的数据制成的，除此之外，还有其他的一些信息渠道。
While its current scope is very modest, IBM hopes to enhance the tuning utility in future releases to more accurately characterize the capabilities of and improve pushdown to ODBC sources.
目前，这个调优实用程序的适用范围还不够大，IBM希望在将来的版本中进一步增强该实用程序，以便更精确地描述ODBC 数据源的能力，并使更多的操作可以下推到 ODBC 数据源。
While its current scope is very modest, IBM hopes to enhance the tuning utility in future releases to more accurately characterize the capabilities of and improve pushdown to ODBC sources.
目前，这个调优实用程序的适用范围还不够大，IBM希望在将来的版本中进一步增强该实用程序，以便更精确地描述ODBC 数据源的能力，并使更多的操作可以下推到 ODBC 数据源。
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