Capacitor easy problems phenomenon is: leakage, short circuit, break, electric capacity decrescent, internal lead contact is not complete toshiba satellite l305-s5865 laptop cpu fan
(pole piece and lead connection), etc. Especially the electrolytic capacitor, the rate is higher than any other species capacitor much higher. Electrolytic capacitor often appear problem phenomenon is leakage, capacity decreases, and breakdown, electrolyte leakage, etc. Capacitor after damage should be with the original model parameters. But capacitor of various kinds, if not the parameter change, should use substitution method. Substitution principle as follows.
1) substitute capacitor nominal value than the original capacitor nominal value is plus or minus 10% floating, the power filter capacitance, bypass capacitors such as its floating FanPu can also be larger. But for some circuit capacitance in substitution must press former nominal value, otherwise will cause circuit the disorder. Such as resonance circuit, time constant circuit capacitor must press former nominal value substitution. Be like again toshiba satellite l305-s5875 laptop cpu fan
television apparent put and tube cathode fused capacitor, this capacitance damage to also must be the original nominal value substitution, otherwise it will affect image quality.
2) substitute capacitor rated voltage must be more than or equal to the original capacitor voltage rating, or greater than the actual circuit working voltage.
3) substitute capacitor frequency characteristics must be sufficient actual circuit frequency condition, or with high frequency characteristic capacitor to substitution low frequency characteristic capacitor.
4) mica capacitor, ceramic capacitor can be substitution paper toshiba satellite l355d laptop cpu fan
condenser. Ceramic capacitor can be substitution mica capacitor and glass glaze capacitor. Steel electrolytic capacitor can be substitution aluminum electrolytic capacitor.
5) capacitor capacity do not have the appropriate time, can use capacitor in series and parallel get more appropriate electric capacity. If the capacitor pressure value is insufficient, also can use a series methods improve pressure value. For example, circuit should be pressure on 25 v, let value for 500 u f capacitor, hand there is only 1000 u f / 16 v capacitor, can two only 1000 u f / 16 v capacitor series. As shown in figure (a) shows, after series can get pressure 32 v, capacity for 500 u f equivalent capacitor.
Capacitor in parallel as shown in figure (b) after shown, toshiba satellite l355-s7829 laptop cpu fan
it can improve the electric capacity, but cannot ascend pressure size, capacitor series, can promote pressure ability, but electric capacity to reduce.
http://chargerbattery.blogdetik.com/2012/11/09/computer-graphics-fault-and-processing/
http://batterycharger01.beeplog.com/178911_1484851.htm
