Electrolytic capacitor involves the principle: positive when the positive electrode capacitor will form a very thin oxide film (aluminum oxide) as a dielectric; reverse aluminum foil (capacitor positive) is connected to the negative power supply will be electrolysis of H2 instead An oxide film will be formed and the other electrode will not form an oxide film that can serve as a dielectric due to the difference in material. The company is located in:

Aluminum electrolytic capacitor is formed by the corrosion and the formation of oxide film anode foil, after the corrosion of the cathode foil,

After the separation between the electrolytic paper wound, and then impregnated with the working electrolyte, and then sealed in the aluminum shell and made. Due to the existence of polarity of electrolytic capacitors, the use of positive and negative electrodes must pay attention to the correct connection, otherwise not only the capacitor can not play a role, and the leakage current is large, the capacitor within a short period of time will heat, destroy the oxide film, then damage. The company is located in:

Electrolytic capacitor is a kind of capacitor, electrolyte coating, polarity, positive and negative can not pick the wrong. Electric capacity (Electriccapacity), the two metal poles, the middle folder with insulating material (medium) composition. Electrolytic capacitor features a: The capacitance per unit volume is very large, larger than the other types of capacitors tens to hundreds of times. Electrolytic capacitor features two: rated capacity can be very large, can easily do tens of thousands of μf or even a few f (but not and double-layer capacitance ratio). Electrolytic capacitor features three: the price is overwhelming than other types of advantages, because the composition of electrolytic capacitors are common industrial materials, such as aluminum and so on. Electrolytic capacitor manufacturing equipment are also ordinary industrial equipment, large-scale production, the cost is relatively low. Electrolytic capacitors are usually composed of a metal foil (aluminum / tantalum) as a positive electrode and an insulating oxide layer of a metal foil (aluminum oxide / tantalum pentoxide) as a dielectric. Electrolytic capacitors are divided by their positive electrodes into aluminum electrolytic capacitors and tantalum electrolytes Capacitor. The negative electrode of an aluminum electrolytic capacitor consists of a tissue / film or electrolyte polymer impregnated with an electrolyte solution (liquid electrolyte); the negative electrode of a tantalum electrolyte capacitor is usually manganese dioxide. Electrolytic capacitors are named because of the electrolyte as the negative electrode (attention and dielectric distinction). A polar electrolytic capacitor usually in the power circuit or IF, low-frequency circuit from the power filter, decoupling, signal coupling and time constant set DC blocking effect. Generally can not be used for AC power circuit, the DC power supply circuit for the filter capacitor used, the anode (positive) should be connected to the positive terminal of the supply voltage, the cathode (negative) and the negative terminal of the supply voltage can not be connected , Otherwise it will damage the capacitor. The company is located in:

Non-polar electrolytic capacitors are commonly used for speaker divider circuit, TV S correction circuit and single-phase motor starting circuit. Electrolytic capacitors are widely used in household appliances and various electronic products, the larger the capacity range, usually 1 ~ 1000μF, rated operating voltage range of 6.3 ~ 450V. The disadvantage is the dielectric loss, large capacity error (maximum allowable deviation of +100%, - 20%), high temperature resistance is poor, long storage time is easy to failure.