电子专业英语试题(B)

专业英语试题----翻译资料B

1.

The signal generating device is used to give the electric circuit or the equipment input signal, in order to maintain and modify either the electric circuit or the equipment. It converts DC to AC or varying DC in the form of sine waves, square waves, triangle wave, or other types of voltage waveforms. Some signal generating device may use to generate the special audio frequency, RF(Radio Freqency), or higher frequencies,some may produce many kinds of frequency range signal. All generators will have a function switch, a frequency range switch, and a fine adjustment control for selecting a specific frequency, an amplitude control for varying the peak to peak output voltage, and output terminals.

2.

This curriculum mainly introduces the characteristics of semiconductor devices in linear application scope.The content involved in semiconductor diodes (PN junction diodes, special purpose diodes), transistors (field effects and bipolar transistors), signal amplifiers, practical amplifiers, biasing circuits, operational amplifiers circuit and other circuits (rectification, regulation and DC power supplies).

3.

Let us take a very simple but striking example. Consider a requirement for an amplifier having a voltage gain of 10 at 50 kHz

driving into a 10 k load. A common low-cost, internally frequency-compensated op amp is chosen; it has the required bandwidth at a closed-loop gain of 10, and it would seem to meet the bill. The device is connected, and it is found to have the correct gain. But it will only produce a few volts output swing when the data clearly shows that the output should be capable of driving to within two or three volts of the supply rails. The designer has forgotten that the maximum output voltage swing is severely limited by frequency, and that the maximum low-frequency output swing becomes limited at about 10 kHz. Of course, the information is in fact on the data sheet, but its relevance has not been appreciated. This sort of problem occurs regularly for the inexperienced designer. So the moral is clear: always take the necessary time to write down the full operating requirements before attempting a design. Attention to the detail of the performance specification will always be beneficial

4.

The disadvantages can include increased manufacturing and design time, increased non-recurring engineering costs, more complexity in the CAD system and a much higher skill requirement on the part of the design team.

1. 讯号产生器是用来给电路或设备的输入信号，以维护和修改电路或设备。它

转换DC- AC或正弦波，方波，三角波，或其他类型的电压波形的形式在不同的直流。某些信号产生的设备可能会使用产生特殊的音频，RF（无线电Freqency），或更高的频率，有些人可能会产生多种频率范围的信号。所有发电机将功能开关，频率范围开关，并为选择一个特定的频率微调控制，不同的峰峰值输出电压的幅度控制，输出端子。

2. 本课程主要介绍半导体器件的特点，在半导体二极管（PN结二极管，特殊

用途的二极管），晶体管（场效果和双极晶体管），信号放大器，实际的放大器，偏置电路，运算放大器线性应用程序scope.The涉及的内容电路和其他电路（整顿，监管和直流电源）。

3. 让我们采取一个很简单的，但突出的例子。考虑成10 K 负载在50千赫驾

驶10电压增益放大器的要求。一个共同的低成本，内部频率补偿的运算放大器选择，它已在10闭环增益所需要的带宽，它似乎满足该法案。设备已连接，并发现有正确的增益。但它只能产生几伏的输出摆幅，当数据清楚地表明，输出应能够驱动两个或三个伏电源轨。设计者忘记的最大输出电压摆幅，造成严重的频率的限制，并在大约10千赫的限制，成为最大的低频输出摆幅。当然，实际上在数据表上的信息，但其相关性并没有受到赞赏。这类问题经常发生的没有经验的设计师。所以道德是明确的：总是采取必要的时间写下来，然后再尝试设计的完整的操作要求。注意性能规格的细节将永远是有益的

4. 缺点包括增加制造和设计时间，增加非经常性工程成本，更在CAD系统中

的复杂性和设计团队的一部分技能要求高得多。

5.