Electrolytic capacitors are widely used. Electrolytic capacitors are used in all electronic products. They are most representative for household appliances and various electronic products. Their capacity ranges from 1 to 33000 μ F. The rated working voltage range is 6.3~700V.
The disadvantages of electrolytic capacitors are large dielectric loss and capacity error (the maximum allowable deviation is+100%, - 20%), poor high temperature resistance, and easy failure due to long storage time.
The polarity of the electrolytic capacitor shall be observed that "-" is the negative pole and "+" is the positive pole on the side of the electrolytic capacitor. If the electrolytic capacitor is not marked with positive and negative poles, it can also be judged according to the length of its pin. The long pin is the positive pole and the short pin is the negative pole.
Polarized electrolytic capacitors usually play the role of power filter, decoupling, signal coupling, time constant setting and DC isolation in power circuit or medium frequency and low frequency circuit.
Generally, it cannot be used in AC power supply circuit. When it is used as filter capacitor in DC power supply circuit, its anode (positive pole) should be connected with the positive end of the power supply voltage, and its cathode (negative pole) should be connected with the negative end of the power supply voltage, which cannot be reversed, otherwise the capacitor will be damaged.
The non-polar electrolytic capacitor is usually used in the loudspeaker divider circuit, the television S correction circuit and the starting circuit of single-phase motor.
Electrolytic capacitors are mainly used in vehicle industry, security industry, medical electronics, computer television, electronic toys, industrial control, LED drive power supply, and smart home appliances。The selection of electrolytic capacitor is also very important. The engineer should select the appropriate model according to the working environment, temperature, volume, life and other factors of the capacitor. If you need, please feel free to contact us.