高壓電解電容的上限容量已擴(kuò)展到4f左右，運(yùn)用頻率已達(dá)到30khz，工作溫度規(guī)模已達(dá)到-55℃—125℃，有的甚至高到150℃，額外電壓己達(dá)到700v。當(dāng)然商品越多選擇也就越多，電解電容廠家告訴您如何選用高壓電解電容呢？

　　The upper limit capacity of high voltage electrolytic capacitor has been extended to about 4f, the operating frequency has reached 30kHz, the working temperature scale has reached - 55 ℃ - 125 ℃, some even as high as 150 ℃, and the additional voltage has reached 700V. Of course, the more products, the more choices, electrolytic capacitor manufacturers tell you how to choose high voltage electrolytic capacitors?

　　1、通常高壓電解電容的電容差錯(cuò)大些，不會(huì)嚴(yán)重影響電路的正常作業(yè)，所以可以取電容量略大一些或略小一些的電容器替代。但在分頻電路、ｓ校對(duì)電路、振動(dòng)回路及回路中不可，電容量應(yīng)和核算請(qǐng)求的盡量共同。在一些濾波網(wǎng)絡(luò)中，黑金剛電解電容，電解電容的容量也請(qǐng)求非常，其差錯(cuò)應(yīng)小于±0.3－0.5。

　　Generally, the capacitance error of high voltage electrolytic capacitor is larger, which will not seriously affect the normal operation of the circuit. Therefore, the capacitor with a slightly larger or smaller capacitance can be used instead. However, it is not allowed in the frequency division circuit, s-check circuit, vibration circuit and circuit, and the capacitance should be as common as possible with the accounting request. In some filter networks, the capacity of black diamond electrolytic capacitor and electrolytic capacitor is also very high, and the error should be less than ± 0.3-0.5.

　　2、選用原型號(hào)高壓電解電容。

　　The prototype high voltage electrolytic capacitor is selected.

　　3、耐壓請(qǐng)求必須滿意，選用的耐壓值應(yīng)等于或大于原來的值。

　　The voltage withstand request must be satisfied, and the selected withstand voltage value should be equal to or greater than the original value.

　　4、通常運(yùn)用無(wú)極性電解電容替代，真實(shí)無(wú)辦法時(shí)可用兩只容量大一倍的有極性電容逆串聯(lián)后替代，方法是將兩只要極性電解電容的正極相連（或?qū)⑺鼈兊膬蓚€(gè)負(fù)極相連）。

　　In general, nonpolar electrolytic capacitors are usually used instead. When there is no way, two polar capacitors with double capacity can be used in reverse series instead. The method is to connect the positive electrodes of two polar electrolytic capacitors (or connect their two negative electrodes).

　　5、在選用高壓電解電容時(shí)，選用耐高溫的高壓電解電容，耐高溫電容的高作業(yè)溫度為105℃，當(dāng)其在高作業(yè)溫度條件下作業(yè)時(shí)，能確保2000小時(shí)左右的正常作業(yè)時(shí)間。在50℃下運(yùn)用80℃的電容時(shí)，其壽數(shù)可達(dá)2.2萬(wàn)小時(shí)，假如此刻運(yùn)用高溫高壓電解電容，其壽數(shù)可達(dá)9萬(wàn)小時(shí)。

　　When selecting high-voltage electrolytic capacitor, high-temperature resistant high-voltage electrolytic capacitor is selected. The high operating temperature of high-temperature resistant capacitor is 105 ℃. When it works at high operating temperature, it can ensure about 2000 hours of normal operation time. When 80 ℃ capacitor is used at 50 ℃, its life can reach 22000 hours. If high temperature and high voltage electrolytic capacitor is used at the moment, its life can reach 90000 hours.