The capacitor Storage and working life

Than resistor, IC, transistors, plastic capacitance these semi-permanent components, the service life of aluminum electrolytic capacitor is worth attention.Is a fixed number of year of the store, nature and life, 10 ~ 20 years should have no problem.

Capacitance is unfavorable use immediately for too long, using the power supply to its aging (activated);Terminal clamp, slow adjustment of the power supply voltage, from low to high, the highest can be adjusted to the rated voltage of the capacitor.

Long working life, it's hard to understand, the so-called life LL - long life capacitance, usually said the ripple current Irac stability.Talked about in front of the capacitance of the Irac related to working temperature and frequency, with, for example, is 10 KHZ and 40 degrees C is 15 a, 85 C is 9 a.15 a / 9 a = 1.67.This number is the life of the capacitor factor of (temporary), the higher the number the lower life, digital close to 1 life long.

Even so, if q: what a kind of capacitor has good sound quality?It is difficult to answer.Basically, the capacitance of different brands, series, its natural sound performance is also different.I personally would not "day products kill without", should handle only proper, products also do not lose the European and American goods.Senior years ago used ELNA Cerafine sound level capacitance, low ESR, although it, but the Irac is not high also, in amp. The low frequency is very thick, but the fog heavier, not transparent enough.But after she and speed - up small capacitance, just be suddenly enlightened.

So the actual assembly, remember must be on the main filter capacitor and speed - up small capacitance, the move "at least" will improve the high frequency response.What is the value?Had better be a big and a small, big 1 u F, little 0.1 u F, MKP is a minimum requirement.

Sometimes small capacitance will find little benefit, and this may be a small capacitance is not right.RIFA electrolysis and plastic capacitance, if want to add and speed - up, advise you don't find WIMA, suggest you try the MIT PPFX -s foil or RTX series 0.1 u F.Writing this article, at the same time also pay attention to the magazine ads, American Krell and Canada Class 'e the Hi - End of the Audio level after the new model should adopt Japanese Nichicon capacitors family power smoothing!But the magazine reviewers who dare say it bad?

Hundreds of mA current level before expanding machine can't eat, so the filter capacitance easier choice.High wattage and high output current cater for expanding machine, the filter capacitor Irac characteristics will be taken into account.

For filtering in electrolytic capacitor, there are a few points worth netizen note: one, generally speaking, day products Irac is lower than in Europe and the product;Second, the low leakage current is more important than low ESR;Three, the appropriate filter capacitor and small capacitance;Four, try to choose high voltage capacitor;Five, the top capacitance, capacity and the pressure is not high, so the hundreds of watts of big power often rough voice, not without reason.

The author does not recommend what kind of capacitor is best, because as long as use it properly, each capacitance can emit sound good.As to emphasize capacitor, resistor, solder, fuse the XXX brand don't have to, is absolutely don't understand the circuit structure of the layman!

Capacitor according to its components structure can be roughly divided into: a, winding type, type 2, horizon, electrolytic type.And type electrolytic aluminium and tantalum quality, and the two classes, and aluminum liquid electrolyte and solid electrolyte.If the said liquid electrolyte is aluminum foil wet, dry solid electrolyte is aluminum foil, it would be wrong, because of aluminum foil in dry wet are liquid electrolyte capacitor and aluminum foil.