高壓電解電容的上限容量已擴展到4f左右，運用頻率已達到30khz，工作溫度規模已達到-55℃—125℃，有的甚至高到150℃，額外電壓己達到700v。當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大些，不會嚴重影響電路的正常作業，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校對電路、振動回路及回路中不可，電容量應和核算請求的盡量共同。在一些濾波網絡中，黑金剛電解電容，電解電容的容量也請求非常，其差錯應小于±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、選用原型號高壓電解電容。

　　The prototype high voltage electrolytic capacitor is selected.

　　3、耐壓請求必須滿意，選用的耐壓值應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、通常運用無極性電解電容替代，真實無辦法時可用兩只容量大一倍的有極性電容逆串聯后替代，方法是將兩只要極性電解電容的正極相連（或將它們的兩個負極相連）。

　　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，選用耐高溫的高壓電解電容，耐高溫電容的高作業溫度為105℃，當其在高作業溫度條件下作業時，能確保2000小時左右的正常作業時間。在50℃下運用80℃的電容時，其壽數可達2.2萬小時，假如此刻運用高溫高壓電解電容，其壽數可達9萬小時。

　　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.