電容的種類及型號實在是太多了，導致很多人在使用的過程中不能準確的判斷出電容是否分正負極，如何正確識別電容的正負極，今天小編就跟大家分享一下常見的電容引腳正負極識別方法。

　　There are so many types and models of capacitors that many people can't accurately judge whether the capacitor is divided into positive and negative electrodes in the process of using them. How to correctly identify the positive and negative electrodes of capacitors? Today, I'd like to share with you some common identification methods of positive and negative electrodes of capacitor pins.

　　1.普通電解電容

　　Common electrolytic capacitor

　　在電容的外殼上標有“--”的為負極，另一極為正極。負極一般顏色為灰白色，正極一端多為黑色。識別方法二：在新買的電容中既在未使用的電容中，兩個管腳中長的代表電容的正極，短的代表電容的負極。

　　The one marked with "-" on the shell of the capacitor is negative, and the other is positive. The negative electrode is generally gray white, and the positive end is mostly black. Identification method 2: in the newly purchased capacitor, the long one represents the positive pole of the capacitor and the short one represents the negative pole of the capacitor. 

普通電解電容的正負極識別

　　2.貼片鋁電解電容

　　Chip aluminum electrolytic capacitor

　　將兩個電容放在一起說的目的就是為了區分兩種電容的正負極差異，鋁電解電容在外形上是個圓柱形，其正負極的識別通過電容的頂部有個黑色的標識來識別，有黑色的部分是負極，另一極是正極。另一極是負極。或者是講：有一端是不規則的是正極，另一端是負極。

　　The purpose of putting the two capacitors together is to distinguish the difference between the positive and negative electrodes of the two kinds of capacitors. The aluminum electrolytic capacitor is cylindrical in shape, and its positive and negative electrodes are identified by a black mark on the top of the capacitor. The black part is the negative electrode, and the other is the positive pole. The other pole is the negative pole. Or to say: one end is irregular is the positive pole, the other end is the negative pole.

貼片鋁電解電容正負極識別識別

　　3.貼片鉭電解電容的識別方法

　　Identification method of chip tantalum electrolytic capacitor

　　鉭電解電容的外形上是個長方體，帶有條紋的一極是正極（切記）！這個看起來比較反常，記住就好啦。

　　Tantalum electrolytic capacitor shape is a cuboid, with a stripe of the pole is the positive pole (remember)! This looks abnormal. Just remember.

貼片鉭電解電容正負極識別

　　4.微調電容和可變電容的正負極識別

　　Positive and negative pole identification of fine tuning capacitor and variable capacitor

　　識別微調電容（就是那種通過螺絲刀進行細微調節的電容），這種微調電容一般對電容的正負極要求不是非常的嚴格，但是為了防止調節電容的過程對電路板系統的影響通常將動片定義為負極連接電路板的地，另一極為正極。可變電容的正負極識別和微調電容相同，不過可變電容的動定引腳比較好判別。一般對于單聯可變電容來說，在兩端的引腳為定，一般連接正極，中間的引腳為動，連接電路的負極。

　　Identify the trimming capacitor (that is, the capacitor that is fine adjusted by a screw driver). Generally, the requirements for the positive and negative poles of the capacitor are not very strict. However, in order to prevent the influence of the process of adjusting the capacitance on the circuit board system, the moving piece is usually defined as the negative pole connected to the ground of the circuit board, and the other pole is the positive pole. The positive and negative pole identification of variable capacitor is the same as that of fine tuning capacitor, but the dynamic fixed pin of variable capacitor is better to distinguish. Generally, for single variable capacitor, the pin at both ends is fixed, and the pin in the middle is connected to the negative pole of the circuit.

微調電容和可變電容的正負極識別

　　以上就是常見的電容引腳正負極識別的方法，希望對您有所幫助！如需采購電容請隨時聯系我們，山東紅寶電子有限公司經營各種類型的電容元器件，型號齊全，性能良好，期待與您的合作。

　　The above is the common capacitor pin positive and negative pole identification method, hope to help you! If you need to purchase capacitors, please contact us at any time. Shandong Hongbao Electronic Co., Ltd. deals in various types of capacitor components with complete models and good performance. We are looking forward to cooperating with you.