本文目录一览:
- 1、家庭电路主要由哪几部分组成各部分的作用是什么
- 2、家庭电路由哪几部分组成?
- 3、家庭电路的组成
- 4、1.家庭电路是由哪些部分组成,各有什么作用
家庭电路主要由哪几部分组成各部分的作用是什么
电路由电源,负载,连接导线和辅助设备四大部分组成。实际应用的电路都比较复杂,因此,为了便于分析电路的实质,通常用符号表示组成电路实际原件及其连接线,即画成所谓电路图。其中导线和辅助设备合称为中间环节。
1.电源
电源是提供电能的设备。电源的功能是把非电能转变成电能。例如,电池是把化学能转变成电能;发电机是把机械能转变成电能。由于非电能的种类很多,转变成电能的方式也很多,所以,目前实用的电源类型也很多,最常用的电源是干电池、蓄电池和发电机等。
2.负载
在电路中使用电能的各种设备统称为负载。负载的功能是把电能转变为其他形式能。例如,电炉把电能转变为热能;电动机把电能转变为机械能,等等。通常使用的照明器具、家用电器、机床等都可称为负载。
3.导线
连接导线用来把电源、负载和其他辅助设备连接成一个闭合回路,起着传输电能的作用。
4.辅助设备
辅助设备是用来实现对电路的控制、分配、保护及测量等作用的。辅助设备包括各种开关、熔断器及测量仪表等。
家庭电路由哪几部分组成?
家庭电路一般由进户线、电能表、总开关、保险盒、用电器、插座、开关、用电器有串联、有并联的、有混合电路……
家庭电路的组成
家庭电路的组成:常见的家庭电路一般由进户线、电能表、总开关、保险设备、用电器、插座、导线等组成。进户线分为火线和零线,它们用试电笔来判别,能使试电笔的氖管发光的是火线,不能使氖管发光的是零线。(试电笔金属螺帽应与手接触.)
当电路发生故障或异常时,伴随着电流不断升高,并且升高的电流有可能损坏电路中的某些重要器件或贵重器件,也有可能烧毁电路甚至造成火灾。保险丝保护电子设备不受过电流的伤害,也可避免电子设备因内部故障所引起的严重伤害。因此,每个保险丝上皆有额定规格,当电流超过额定规格时保险丝将会熔断。
若电路中正确地安置了保险丝,那么,保险丝就会在电流异常升高到一定的高度和一定的时候,自身熔断切断电流,从而起到保护电路安全运行的作用。
1.家庭电路是由哪些部分组成,各有什么作用
家庭中的电是从变电所来的,交流、220V.
家庭电路中的基本元件应该包括:电度表、空气开关、插座(插排)、照明灯开关、照明灯、家用电器(电视机、洗衣机、电冰箱、电饭锅、电磁炉、微波炉、电热水器等等).
电度表是计量家庭用电量的、空气开关是家庭用电的总开关、插座(插排)是为家用电器提供电源的、照明灯开关是控制照明灯的.
家庭里的用电器都是并联接在电路中的.
家庭电路中一共有三条线:相线(火线)、中线(零线)、地线.其中相线和中线提供220V交流电源,并且相线带电,中线不带电;地线是保护接地用的,一般家用电器的外壳与这根线相连.
线芯是导体,一般是铜线、外皮是绝缘体,一般是塑料、橡胶、聚四氟书乙稀等.
用三个脚插头的是需要外壳接地的,起保护作用;用两个脚插头的不需要外壳接地.
一般卫生间(或浴室)用带盖的插座,防止水气进入.
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