LGJ2W101MELB20

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Aluminum electrolytic capacitors are widely used electronic components due to their wide-ranging applications and relative ease of use. The LGJ2W101MELB20 is a type of aluminum electrolytic capacitor, typically used in high power, high frequency applications. This article will discuss the applications of the LGJ2W101MELB20 and explain the underlying working principle.

Applications

The LGJ2W101MELB20 is a radial leaded aluminum electrolytic capacitor, with a working voltage of 100V and capacitance of 1500µF. It is primarily used in high power circuits, due to its relatively low internal resistance and high current-handling capabilities. With a long lifetime of up to 2000 hours at the rated temperature and voltage, the LGJ2W101MELB20 is well-suited for applications such as power supplies, DC-DC converters, electronic ballast, LED lighting and inverters. Due to its low ESR and high ripple current values, the LGJ2W101MELB20 is ideal for high frequency applications, such as in audio circuitry and communication equipment. As with all aluminum electrolytic capacitors, the LGJ2W101MELB20 has a large temperature range and can be used in temperatures from -40℃ to +105℃.

Working principle

Aluminum electrolytic capacitors are unique, in that they employ an electrolytic solution as the dielectric material. This electrolyte is typically a solution of boric acid and/or ammonium pentaborate in water. The solution is then used to saturate a porous anode made of aluminum.

The anode is then produced from an oxidized aluminum sheet, and a thin oxide layer is formed on the surface. This forms an electrical insulation layer and prevents outward current leakage. A cathode, which is typically made of an aluminum sheet with a thin nickel coating, is also placed in contact with the electrolytic solution. The combination of these two layers creates the capacitance effect, with the anode being the positive electrode and the cathode being the negative electrode.

The capacitance of the aluminum electrolytic capacitor is determined by the size and shape of the electrodes. A larger anode will result in a larger capacitance. Also the amount of electrolyte present in the pores of the anode will affect the capacitance, as the capacitance increases with the increasing electrolyte volume. The thickness of the insulation layer will affect the capacitance as well, as a thicker insulation layer will provide a larger surface area for the electric field.

Overall, aluminum electrolytic capacitors, such as the LGJ2W101MELB20, can be used in a wide range of applications due to their long lifespans and high current-handling capabilities. The underlying working principle involves the combination of an anode and cathode, separated by an electrolytic solution, to form a capacitor. The size, shape and amount of electrolyte present will determine the capacitance of the device.

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