P1U1A Electrical Networks 电路
network n. 网络,电路
resistor n. 电阻器
inductor n. 电感器
capacitor n. 电容器
passive network 无源网络
active network 有源网络
characteristic adj. 特性(的);n. 特性曲线
Ohm n. 欧姆
Faraday n. 法拉第
electric charge 电荷
integral n. 积分
increment n. 增量
armature n. 电枢,衔铁,加固
aforementioned adj. 上述的,前面提到的
represent v. 代表,表示,阐明
amplify v. 放大
symbolic adj. 符号的,记号的
mesh n. 网孔
Kirchhoff’s first law 基尔霍夫第一定律
loop current 回路电流
voltage drop 电压降
in series 串联
differential adj. 微分的;n. 微分
variable n. 变量
outline n. 轮廓;v. 提出……的要点
eliminate v. 消除,对消
[1] In the case of a resistor, the voltage-current relationship is given by Ohm’s law, which states that the voltage across the resistor is equal to the current through the resistor multiplied by the value of the resistance.
就电阻来说,电压—电流的关系由欧姆定律决定。欧姆定律指出:电阻两端的电压等于电阻上流过的电流乘以电阻值。
Which做关系代词,以引出非限制性定语从句。
[2]It may be that the inductor voltage rather than the current is the variable of interest in the circuit.
或许在电路中,人们感兴趣的变量是电感电压而不是电感电流。
P1U2A The Operational Amplifier 运算放大器
amplifier n. 放大器
integrated circuit 集成电路
building blocks 积木
potential n. (电)势
cascade n., v. 串联;adj. 串联的
on the order of 属于同类的,约为
trade off 换取
cumbersome adj. 麻烦的
intrinsic adj. 内在的
circuitry n. 电路
[1] One problem with electronic devices corresponding to the generalized amplifiers is that the gains, AU or AI, depend upon internal properties of the two-port system.
对应于像广义放大器这样的电子装置,一个问题就是增益 AU 或者AI ,它们取决于两输入端系统的内部特性。
[2] This is one of the key features of Op-Amp design—the action of the circuit on signals depends only upon the external elements which can be easily varied by the designer and which do not depend upon the detailed character of the Op-Amp itself.
这是运算放大器设计的重要特征之一——在信号作用下,电路的动作仅取决于能够容易被设计者改变的外部元件,而不取决于运算放大器本身的细节特性。
P1U3A Logical Variables and Flip-flop 逻辑变量与触发器
flip-flop n. 触发器
relevance n. 关联
terminology n. 术语
aptness n. 恰当
pilot n. 飞行员
aloft adv. 高高地
cockpit n. 坐舱
deduce v. 演绎
simultaneously adv. 同时地
Boolean algebra 布尔代数
gate n. 门,门电路
prevalent adj. 流行的
inhibit v. 抑制
难句翻译
[1] We shall now briefly discuss the relevance of such
terminology, and in so doing we shall bring out the
special aptness of the designations “true” and “false” to
identify the possible values of a variable.react to翻译
现在我们将简要地讨论一下这些术语之间的关联,并在此过程中阐明用标示“真”和“假”来识别一个变量的可能值的特殊用途。
[2] Just as other algebras deal with variables which have a numerical significance, Boolean
algebra deals with propositions and is an effective tool for analyzing the relationships between propositions which allow only two mutually exclusive alternatives.
和其他处理有数字意义的变量的代数一样,布尔代数处理的是命题,而且布尔代数对于分析仅有两个互反变量命题之间的关系是一种有效的工具。
[3] There is a generally prevailing attitude in digital systems to view logic 0 as a basic, undisturbed, unperturbed, quiescent state and to view the logic 1 state as the excited, active, effective state, i.e., the state arrived at “after something has happened.”
在数字系统中,普遍的观点是把逻辑0看成一个基本的、无干扰的、稳定的、静止的状态,把逻辑1看成一个激励的、活跃的、有效的状态,也就是说,这种状态是发生在“某种操作动作之后”。
P1U4A Power Semiconductor Devices 功率半导体器件
converter n. 转换器,换流器,变流器
matrix n. 模型,矩阵
diode n. 二极管,半导体二极管
thyristor n. 晶闸管
triac n. 三端双向晶闸管
GTO 门极可关断晶闸管
BJT 双极结型晶体管
power MOSFET 电力MOS场效应晶体管
SIT 静态感应晶体管
IGBT 绝缘栅双极型晶体管
MCT MOS控制晶闸管
IGCT 集成门极换向晶闸管
rectification n. 整流
feedback n. 反馈
freewheeling n. 单向传动
snubber n. 缓冲器,减震器
intrinsic adj. 固有的,体内的,本征
forward biased 正向偏置
conduction n. 导电,传导
emitter n. 发射极
reverse biased 反向偏置
leakage current 漏电流
threshold n. 门限,阈限,极限
breakdown n. 击穿,雪崩
recovery n. 恢复
schottky diode 肖基特二极管
workhorse n. 重载,重负荷
thyratron n. 闸流管
breakover n. 导通
latching current 闭锁电流
holding current 保持电流
phase controlled 相控的
asymmetric adj. 不对称的
force commutated 强制换向
SMPS 开关电源
BLDM 无刷直流电动机
stepper motor 步进电动机
hybrid n. 混合
saturation n. 饱和
难句翻译:
[1] Power diodes provide uncontrolled rectification of power and are used in applications such as electroplating, anodizing, battery charging, welding, power supplies (DCand AC), and variable-frequency drives.
电力二极管提供不可控的整流电源,这些电源有很广的应用,如:电镀、电极氧化、电池充电、焊接、交直流电源和变频驱动。
[2] A gate turn-off thyristor (GTO), as the name indicates, is basically a thyristor-type device that can be turned on by a small positive gate current pulse, but in addition,has the capab
ility of being turned off by a negative gate current pulse.
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