【文章內(nèi)容簡介】 apacitor leakage damage or internal breakdown. B 檢測 10PF ～ 0  01 μ F 固定電容器是否有充電現(xiàn)象，進而判斷其好Detection 10PF ~ μ F capacitor whether there is a fixed charge phenomenon, and then judge its good or bad. 萬用表選用 R1k 擋。 Multimeter selected R 1k block. 兩只三極管的β值均為 100 以上，且穿透電流要小。 2 transistor β values are above 100, and the current penetration is smaller. 可選用 3DG6 等型號硅三極管組成復(fù)合管。 Can choose 3DG6 silicon transistor models such as the position of posite pipe. 萬用表的紅和黑表筆分別與復(fù)合管的發(fā)射極 e 和集電極 c 相接。 Multimeter39。s red and black table pen and posite pipe, respectively e emitter and collector cphase. 由于復(fù)合三極管的放大作用，把被測電容的充放電過程予以放大，使萬用表指針擺幅度加大，從而便于觀察。 As the posite transistor amplification, the process of charging and discharging capacitor under test to be larger, so that the pointer of swing meter increase, and thus easy to observe. 應(yīng)注意的是：在測試操作時，特別是在測較小容量的電容時，要反復(fù)調(diào)換被測電容引腳接觸 A 、 B 兩點，才能明顯地看到萬用表指針的擺動。 It should be noted: In the test operations, especially in the measured capacitance of a smaller capacity, they must repeatedly exchange the measured capactance pin contacts A, B two points, in order to clearly see the multimeter pointer swing. C 對于 0  01 μ F 以上的固定電容，可用萬用表的 R10k 擋直接測試電容器有無充電過程以及有無內(nèi)部短路或漏電，并可根據(jù)指針向右擺動的幅度大小估計出電容器的容量。 For μ F or above a fixed capacitor can be used multimeter R 10k block directly test whether the process of charging capacitor, as well as whether the internal short circuit or leakage, and can swing under the pointer to the right size to estimate the magnitude of the capacity of capacitors . 2 電解電容器的檢測2. electrolytic capacitor testing A 因為電解電容的容量較一般固定電容大得多，所以，測量時，應(yīng)針對不同容量選用合適的量程Because the capacity of electrolytic capacitors is much greater than the average fixed capacitor, therefore, measurements should be the appropriate choice of different capacities range. 根據(jù)經(jīng)驗，一般情況下， 1 ～ 47 μ F 間的電容，可用 R1k 擋測量，大于 47 μ F 的電容可用 R100 擋測量。 Based on experience, under normal circumstances, 1 ~ 47 μ F between the capacitance, R 1k block can be measured, greater than 47 μ F capacitor can be used R 100 block measurement. B 將萬用表紅表筆接負極，黑表筆接正極，在剛接觸的瞬間，萬用表指針即向右偏轉(zhuǎn)較大偏度 ( 對于同一電阻擋，容量越大，擺幅越大 ) ，接著逐漸向左回轉(zhuǎn)，直到停在某一位置。The multimeter red pen then negative, then positive black table pen, in the new to the moment, multimeter pointer that the right side deflection of a larger degree (for the same power to block the capacity the greater the greater the swing), and then gradually to the left turn, until the stop at a certain location. 此時的阻值便是電解電容的正向漏電阻，此值略大于反向漏電阻。 At this point the resistance is positive electrolytic capacitor leakage resistance, this value is slightly larger than the reverse leakage resistance. 實際使用經(jīng)驗表明，電解電容的漏電阻一般應(yīng)在幾百 k Ω以上，否則，將不能正常工作。 Actual experience has shown that the leakage resistance of electrolytic capacitors in general should be more than a few hundred k Ω, otherwise, it will not work properly. 在測試中，若正向、反向均無充電的現(xiàn)象，即表針不動，則說明容量消失或內(nèi)部斷路；如果所測阻值很小或為零，說明電容漏電大或已擊穿損壞，不能再使用。 In the test, if positive, no charge reverse phenomenon, namely,needle not move, then lost the capacity or the internal circuit。if the measured resistance of very small or zero, indicating large capacitor leakage or breakdown damaged, can not be used again. C 對于正、負極標志不明的電解電容器，可利用上述測量漏電阻的方法加以判別。C for the positive and negative signs unknown electrolytic capacitors can be measured using the above method to determine leakage resistance. 即先任意測一下漏電阻，記住其大小，然后交換表筆再測出一個阻值。 Which is to look at any measure leakage resistance, remember its size, and then swap the table T and then measured by a resistance. 兩次測量中阻值大的那一次便是正向接法，即黑表筆接的是正極，紅表筆接的是負極。 Two measurements of resistance and that one is a big positive then the law, that the black pen then the table is positive, the red pen then the table is the negative. D 使用萬用表電阻擋，采用給電解電容進行正、反向充電的方法，根據(jù)指針向右擺動幅度的大小，可估測出電解電容的容量。 power to block the use of multimeter, using electrolytic capacitors to be positive, the reverse charge method, according to the size of a pointer to the right swings can estimate a capacity of electrolytic capacitors. 3 可變電容3. variable capacitor testing A 用手輕輕旋動轉(zhuǎn)軸，應(yīng)感覺十分平滑，不應(yīng)感覺有時松時緊甚至有卡滯現(xiàn)象。Hand gently rotating shaft, should feel very smooth and should not feel tight and sometimes lax, and even catching the phenomenon. 將載軸向前、后、上、下、左、右等各個方向推動時，轉(zhuǎn)軸不應(yīng)有松動的現(xiàn)象。 Will contain the axial front, back, up, down, left and right in various directions and promotion, the shaft should not be loose phenomenon. B 用一只手旋動轉(zhuǎn)軸，另一只手輕摸動片組的外緣，不應(yīng)感覺有任何松脫現(xiàn)象。Rotating shaft with one hand, the other hand lighttouch move the outer edge of the film group should not feel any loose phenomenon. 轉(zhuǎn)軸與動片之間接觸不良的可變電容器，是不能再繼續(xù)使用的。 Poor contact between the shaft and the moving film of the variable capacitor, can not continue to use. C 將萬用表置于 R10k 擋，一只手將兩個表筆分別接可變電容器的動片和定片的引出端，另一只手將轉(zhuǎn)軸緩緩旋動幾個來回，萬用表指針都應(yīng)Will be placed in R 10k block multimeter, a pen in hand the two tables were then fixed variable capacitor chips and fixed film leads to side, the other hand to slowly rotating shaft a few back and forth, multimeter pointer are infinite position should be fixed. 在旋動轉(zhuǎn)軸的過程中，如果指針有時指向零，說明動片和定片之間存在短路點；如果碰到某一角度，萬用表讀數(shù)不為無窮大而是出現(xiàn)一定阻值，說明可變電容器動片與定片之間存在漏電現(xiàn)象。 In the rotating shaft of the process, if the pointer is sometimes point to zero, indicating movement between the film and the stator shortcircuit point。 If you hit a certain point of view, multimeter reading is not infinite, but many will certainly resistance, indicating a variable capacitor move exists between the film and the stator leakage phenomenon. 三、電感器、變壓器檢測方Ⅲ.Inductors, transformers detection methods and experience 1 色碼電感器的的檢1. color code inductor test 將萬用表置于 R1 擋，紅、黑表筆各接色碼電感器的任一引出端，此時指針應(yīng)向右擺動。 Placed in the multimeter R 1 block, red and black colorcoded table pen the next inductor leads to either a client, this time the pointer should be to the right swing. 根據(jù)測出的