电容上的uF是什么意思

2025-04-01 03:29:37
推荐回答(4个)
回答1:

μF是电容常用的单位之一,表示的是电容的容量。中文名称为微法。

电容的计量单位是法拉,用英文字母F来表示,由于法拉的单位过大,所以常见的计量单位是微法,也就是法拉的一百万分之一,用字母μF来表示,他的下面还有微微法,也叫皮法,用P来表示,1uF等于一百万pF。

电容有存储电能、泄放电能的作用,在供电条件一定的情况下,电容容量越大,充满电的所需时间越长,放电时间也会长。

扩展资料

电容器主要参数

1、标称电容量。

标称电容量,为标志在电容器上的电容量。但电容器实际电容量与标称电容量是有偏差的,精度等级与允许误差有对应关系。一般电容器常用I、Ⅱ、Ⅲ级,电解电容器用Ⅳ、V、Ⅵ级表示容量精度,根据用途选取。电容量的单位为F(法)。

2、额定电压。

额定电压为在最低环境温度和额定环境温度下,可连续加在电容器的最高直流电压。如果工作电压超过电容器的耐压,电容器将被击穿,造成损坏。在实际中,随着温度的升高,耐压值将会变低。

3、绝缘电阻。

直流电压加在电容上,产生漏电电流,两者之比称为绝缘电阻。当电容较小时,其值主要取决于电容的表面状态;容量大于0.1μF时,其值主要取决于介质。通常情况,绝缘电阻越大越好。

4、损耗。

电容在电场作用下,在单位时间内因发热所消耗的能量称做损耗。损耗与频率范围、介质、电导、电容金属部分的电阻等有关。

5、频率特性。

随着频率的上升,一般电容器的电容量呈现下降的规律。当电容工作在谐振频率以下时,表现为容性;当超过其谐振频率时,表现为感性,此时就不是一个电容而是一个电感了。所以一定要避免电容工作于谐振频率以上。

回答2:

电容uf:
1微法就是电容两端电压每压高1V需的电量为10的负6次方库仑。电容大小的单位,电容的基本单位是法拉(F),1uF=10^(-6) F

回答3:

来来来,我给你复制了一段文字,好好看下。
电容的基本单位是:F (法),此外还有μF(微法)、pF(皮法),另外还有一个用的比较少的单位,那就是:nF(),由于电容 F 的容量非常大,所以我们看到的一般都是μF、nF、pF的单位,而不是F的单位.m 10(-3)、u 10^(-6)、n 10^(-9)、p 10^(-12)
他们之间的具体换算如下:
1F=1,000,000uF
1uF=1,000nF
1nF=1000pF
1、104=0.1UF=10000P
2、103pF=10*(10*10*10)pF=10nF=10/1000uF=0.01uF
3、105=1uf
4、102=0.001uf

回答4:

uF = Micro-F

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