Polyester film or polypropylene film functioning as the medium, zinc aluminum alloy adheres to the surface of metallized film by vacuum evaporation to form an electrode. Capacitors are formed by winding or laminating without inductance. Metallized film capacitors have many advantages such as high vo

Film capacitors-basic introduction. There are many kinds of capacitors, such as electrolyte capacitors, paper capacitors, film capacitors, ceramic capacitors, mica capacitors, air capacitors and so on. But the most frequently used acoustics are electrolytic capacitors and film filter capacitors. Ele

III. Insulation resistance of capacitance affected by temperature In general, the insulation resistance of the capacitance decreases with the increase of temperature, and the decrease of the insulation resistance will lead to the increase of leakage current of the capacitance, so the working of the

(I)The influence of temperature on the service life of power capacitor In general, the life of the capacitor is shortened with the increase of temperature, and the upper limit of the ambient temperature of the power capacitor is generally set at 40 ℃ according to the relevant operating conditions of

Mica is an ideal dielectric material for capacitors with high insulation, high temperature resistance, low dielectric loss and thickness of up to 25 microns. The main advantages of mica capacitor are low loss, good frequency stability, small distributed inductance and large insulation resistance, so

(1) the surface of the lead is oxidized or coated too thinly to weld properly; (2) poor spot welding between lead wire and aluminum foil, which did not eliminate the aluminum oxide film layer in the spot welding place of aluminum foil surface; (3) the probability of low level failure is increased be

Breakdown Mechanism of Ceramic Capacitor under High humidityThe breakdown failure of semi-sealed ceramic capacitors (such as patch capacitors) in high humidity environment is a common and serious problem. The breakdown can be divided into dielectric breakdown and surface arc breakdown. The dielectri

The consequences of silver ion migrationMost inorganic dielectric capacitors use silver electrodes. When semi-sealed capacitors work at high temperature, water molecules infiltrating into the capacitors produce electrolysis. The oxidation reaction occurs at the anode and the silver ion binds with th

Effect of moisture on deterioration of Electrical parameters When the humidity in the air is too high, the water film is condensed on the surface of the capacitor shell, which can reduce the surface insulation resistance of the capacitor. Here, for a semi-sealed structure capacitor, moisture can als

5.To control the operating temperature, it is generally required that the temperature of the hot spot of the shunt capacitor shell should not be greater than 60 ℃ under normal environment, otherwise, the cause must be found out and the treatment should be carried out.6.Pay attention to inspect, chec