《定时器中英文翻译资料》由会员分享，可在线阅读，更多相关《定时器中英文翻译资料（11页珍藏版）》请在金锄头文库上搜索。
1、英文- 摘自：电子电脑报元器件的检测是家电维修的一项根本功，如何准确有效地检测元器件的相关参数，判断元器件的是否正常，不是一件千篇一律的事，必须根据不同的元器件采用不同的方法，从Component detection is an appliance repair basics, how to accurately and effectively detect the components of the relevant parameters to determine whether the normal component is not a cookie-cutter thing, must
2、be based on the different components use different methods to determine components normal or not. 特别对初学者来说，熟练掌握常用元器件的检测方法和经验很有必要，以下对常用电子元器件的检测经验和方法进行介绍供对考。 Especially for beginners, proficiency in commonly used components of the detection methods and experience is essential, the following pairs of e
3、lectronic components commonly used method of testing experience and are introduced for the right test. 一、电阻器的检测方法与经验：.resistors detection methods and experiences: 1 固定电阻器的检1.fixed resistor testing.TA 将两表笔 ( 不分正负 ) 分别与电阻的两端引脚相接即可测出实际电阻值。The two tables T (regardless of positive or negative) between tw
4、o ends of pin-phase resistance can be measured by the actual resistance value. 为了提高测量精度，应根据被测电阻标称值的大小来选择量程。 In order to improve measurement accuracy, measured resistance should be based on the size of the nominal value of the chosen range. 由于欧姆挡刻度的非线性关系，它的中间一段分度较为精细，因此应使指针指示值尽可能落到刻度的中段位置，即全刻度起始的 20
5、80 弧度范围内，以使测量更准确。 Since Ohm block scale non-linear relationship, its the middle of a period of more refined indexing and should therefore be directed to the pointer value is the middle position as far as possible fall into the scale, that is the start of full scale of 20% to 80% within the arc, to t
6、o make measurements more accurate. 根据电阻误差等级不同。According to a different level of resistance errors. 读数与标称阻值之间分别允许有 5 、 10 或 20 的误差。 Readings and the difference between the nominal resistance value is allowed 5%, 10% or 20% error. 如不相符，超出误差范围，那么说明该电阻值变值了。If not match, exceed the error range, then chan
7、ge the value of the resistor value.B 注意：测试时，特别是在测几十 k 以上阻值的电阻时，手不要触及表笔和电阻的导电局部；被检测的电阻从电路中焊下来，至少要焊开一个头，以免电路中的其他元件对测试产生影响，造成测量误差；色环电阻的阻值虽然能以色环标志来确定，但在使用时最好还是用万用表测试一下其实Note: The test, especially in the test scores of more than k resistor values, the hands do not touch the table and the resistance of th
8、e conductive part of the pen; detected resistance welding down from the circuit, at least to open a welding head, so as to avoid circuit testing have an impact on other components, resulting in measurement error; color ring while resistance is able to mark to determine the color wheel, but is best w
9、hen used with a multimeter to test the actual resistance. 2 水泥电阻的检2 .cement resistance testing. 检测水泥电阻的方法及考前须知与检测普通固定电阻完全相同。 Detection of resistance of cement and detection methods and note exactly the same as ordinary fixed resistor. 3 熔断电阻器的3 .fuse resistor testing. 在电路中，当熔断电阻器熔断开路后，可根据经验作出判断：假设发现
10、熔断电阻器外表发黑或烧焦，可断定是其负荷过重，通过它的电流超过额定值很多倍所致；如果其外表无任何痕迹而开路，那么说明流过的电流刚好等于或稍大于其额定熔断值。 In the circuit, when the fuse resistor fuse open circuit, may make judgments based on experience: If it is found fusing resistor surface black or charred, it can be concluded its overloaded by more than its current rating
11、 due to many times; If the surface without any trace of the open, this indicates that the current flow is just equal to or slightly larger than the value of its rated fuse. 对于外表无任何痕迹的熔断电阻器好坏的判断，可借助万用表 R1 挡来测量，为保证测量准确，应将熔断电阻器一端从电路上焊下。 For the surface without any trace of the fuse resistor to judge go
12、od and bad, can draw support from multimeter to measure the R 1 block, in order to ensure measurement accuracy, should fuse resistor from the circuit welding one end of the next. 假设测得的阻值为无穷大，那么说明此熔断电阻器已失效开路，假设测得的阻值与标称值相差甚远，说明电阻变值，也不宜再使用。 If the measured resistance is infinite, then the fuse resistor
13、 has failed open circuit, if the measured resistance and the,nominal value falls far short of that change resistance values, we should not be used. 在维修实践中发现，也有少数熔断电阻器在电路中被击穿短路的现象，检测时也应予以注Maintenance practices found that a small number of fuse-resistor in the circuit was short-circuit breakdown pheno
14、mena, testing, also should be noted. 4 电位器的检测4 .potentiometer detection. 检查电位器时，首先要转动旋柄，看看旋柄转动是否平滑，开关是否灵活，开关通、断时 喀哒 声是否清脆，并听一听电位器内部接触点和电阻体摩擦的声音，如有 沙沙 声，说明质量不好。Check potentiometer, the first rotating rotary handle, turn handle to see if rotation is smooth, the switch is flexible, switch pass, off tim
15、e Cameroon clatter sound is crisp, and listen to a potentiometer, and resistors within the contact points of friction sound, if imperfections sound, indicating poor quality. 用万用表测试时，先根据被测电位器阻值的大小，选择好万用表的适宜电阻挡位，然后可按下述方法进行检测。 With the multimeter test, the first according to the size of the tested pote
16、ntiometer resistance, choose the appropriate resistance gear a good multimeter, and then the following method may be detected.BA 用万用表的欧姆挡测 1 、 2 两端，其读数应为电位器的标称阻值，如万用表的指针不动或阻值相差很多，那么说明该电位器已损坏Block measured with a multimeter ohm 1, 2 at both ends, the reading should be nominal potentiometer resistance, such as the meter pointer does not move or resistance is far too small, then show that the potentiometer is damaged. B 检测电位器的活动臂与电
