永久免费观看的毛片手机视频-日韩精品无码一区二区三区-国产精品一区在线观看你懂的-亚洲学生妹高清av-久久香综合精品久久伊人

Hello! Welcome to the website of Dongguan Youchen Electronic Technology Co., Ltd.

Youchen Technology

Chip Capacitor/Electrolytic Capacitor/Ceramic Capacitor Supplier
18929295505
admin@dgyouchen.com
Current Page: Home > News > Industry news
News

Positive and negative pole judgment method of SMD aluminum Electrolytic capacitor

2019-09-07

When we don't knowcapacitanceWhen measuring the positive and negative poles, a multimeter can be used to measure. The medium between the two poles of a capacitor is not an absolute insulator, and its resistance is not infinite, but a finite value, usually above 1000 megaohms. The resistance between the two poles of a capacitor is called insulation resistance or leakage resistance. Only the positive terminal of the Electrolytic capacitor is connected to the positive side of the power supply (black probe in resistance gear), and the negative terminal is connected to the negative side of the power supply (red probe in resistance gear),Electrolytic capacitorThe leakage current is only small (the leakage resistance is large). On the contrary, the leakage current of Electrolytic capacitor increases (the leakage resistance decreases). In this way, we first assume that a certain pole is the "" pole, and the multimeter uses R * 100 or R * 1K gear. Then, connect the assumed "" pole to the black lead of the multimeter, and the other pole to the red lead of the multimeter. Record the scale at which the needle stops (the resistance value on the left side of the needle is high), and for a digital multimeter, the reading can be directly read. Then discharge the capacitor (touch the two leads), and then switch the two probes to perform a new measurement. In the two measurements, the black probe is connected to the positive pole of the Electrolytic capacitor when the last position of the probe is left (or the resistance is high).

Also:

Differentiation between positive and negative electrodes of SMD capacitors

One is the common tantalum capacitor, which is in the shape of Rectangular cuboid, and the end marked with "-" is positive;

Additionally, there is a silver surface mount capacitor, presumably aluminum electrolysis. The top is circular and the bottom is square, which is common on optical drive circuit boards. This type of capacitor has a negative end marked with "-".

  

Capacitance: can be divided into two categories: non-polar and polar:

The following two types of packages are most common for non-polar capacitors, namely 0805 and 0603;

Polar capacitors, also known as what we usually callElectrolytic capacitorGenerally, aluminum Electrolytic capacitor is the most commonly used one. Since its electrolyte is aluminum, its temperature stability and accuracy are not very high. However, since the patch element is close to the circuit board, it requires high temperature stabilityChip capacitorwithTantalum capacitorAccording to their different withstand voltages, SMD capacitors can be divided into four series: A, B, C, and D, with specific classifications as follows:

Type, packaging form, withstand voltage

A 3216 10V

B 3528 16V

C 6032 25V

D 7343 35V

  Chip tantalum capacitorThe packaging is divided into A type (3216), B type (3528), C type (6032), D type (7343), and E type (7845). The one with a diagonal angle represents the positive pole, (the one with a small triangle represents the positive pole? I don't know!)

Dial switch, crystal oscillator: Different specifications of SMD packaging can be found in the market, and their performance and price will be related to their pin coating, nominal frequency, and segment.

You can tell from your feet that the long one is the positive pole and the short one is the negative pole On the capacitor body, the negative electrode is coated with half of the color

The term solid-state electrolysis or liquid capacitor refers to the material used for its cathode. The advantage of using electrolyte as a cathode is that the capacitance can be very large. However, electrolyte is prone to volatilization and leakage in high-temperature environments, which greatly affects its lifespan and stability. Solid state capacitors use functional conductive polymers as dielectric materials, which do not cause slurry explosion when energized without long-term use. Moreover, at low temperatures, solid-state capacitors will not fail to achieve their expected characteristics and functions due to the slow movement of electrolyte ions. Compared to liquid electrolytes, solid-state capacitors have superior characteristics such as environmental protection, low impedance, high and low temperature stability, high ripple resistance, and high reliability.

        


Previous Page:What is the difference between patch resistors and plug-in resistors?

Next Page:Development of Aluminum Electrolytic Capacitor
Youchen Technology
Dongguan Youchen Electronic Technology Co., Ltd
Tel: 0769-85328400 8533526885336465
Fax: 0769-85308615
Email: admin@dgyouchen.com
Website: m.sh-hongtu.com
Address: Floor 3, No. 7 Xinfeng Road, Shangsha Fourth Industrial Zone, Chang'an Town, Dongguan City, Guangdong Province
Yue ICP Bei No. 13008404
All rights reserved:Dongguan Youchen Electronic Technology Co., Ltd
In-line aluminum electrolytic capacitor manufacturer, SMT aluminum electrolytic capacitor manufacturer, direct sales, brand selection, model selection, price
Follow us:

Do you need our help? Welcome to leave your email!
Subscription
18929295505  
2324774509
admin@dgyouchen.com
主站蜘蛛池模板: 99香蕉国产精品偷在线观看| 大地资源网更新免费播放视频| 无码人妻久久一区二区三区蜜桃| 免费无码肉片在线观看| 成人免费区一区二区三区| 国产后入清纯学生妹| 亚洲人成在线影院| 久久久不卡国产精品一区二区| 伊人久久综合热线大杳蕉| 真人与拘做受免费视频| 国产超碰人人爽人人做人人添| 国产精品一区二区av麻豆| 亚洲成av人在线视| 久久精品水蜜桃av综合天堂| 在线播放五十路熟妇| 国产成人无码a区在线观看导航| 亚洲亚洲人成综合网络| 成人试看120秒体验区| 草草地址线路①屁屁影院成人| 自愉自愉产区二十四区| 精品无码久久久久久久久水蜜桃| 国产freesexvideos中国麻豆| 无码精品久久一区二区三区| 亚洲狠狠婷婷综合久久| 边做饭边被躁bd苍井空图片| 好爽毛片一区二区三区四| 亚洲精品国产精品乱码不卡 | 少妇又色又紧又爽又刺激视频| 好爽又高潮了毛片免费下载| 国产精品乱码一区二区三区| 免费看又黄又无码的网站| 肥大bbwbbw高潮喷水| 最新国产精品剧情在线ss| 国产在线一区二区三区四区五区| 小宝极品内射国产在线| 成人综合婷婷国产精品久久蜜臀| 女人脱了内裤趴开腿让男生摸| 人妻少妇中文字幕乱码| 酒店大战丝袜高跟鞋人妻| 永久免费av无码网站性色av| 欧美综合天天夜夜久久|