Kingtronics Typical Application For High Capacitance And High Voltage MLCC

23 Feb 2011

A typical application for high capacitance, high voltage capacitors is a bulk filter capacitor shown in Figure 1 in a bipolar transistor totem pole configuration high voltage, high capacitance MLCCs are commonly used as input capacitor filters.

To obtain the required capacitance and high voltage rating the MLCCs are often placed in parallel or stacked vertically. This requires careful soldering and attachment processing, due to the larger case sizes required for the application. The basic function of the input capacitor filter is to hold up the rectified power bus line voltage as well as for filtering common mode noise.

Common mode noise flows asymmetrically through both input lines. The current into the load is supplied by the input filter capacitor bank rather than from the power supply, until the point at which the input voltage again equals the voltage across the filter capacitor, see wave forms in Figure 2.

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Kingtronics International Company was established in 1995 located in Dongguan City of China to handle all sales & marketing for factories located in Chengdu, Sichuan and Zhaoqing, Guangdong, China. In 1990, we established the first factory to produce trimming potentiometer and in 1999 we built up new factory in Zhao Qing, Guangdong. Now with around 850 workers, Kingtronics produce trimming potentiometers, dipped tantalum capacitors, multilayer ceramic capacitors, and diode & bridge rectifier. We sell good quality under our brand Kingtronics, and Kt, King, Kingtronics are our three trademarks. All our products are RoHS compliant, and our bridge rectifier have UL approval. Please visit our Products page, you could please download all our PDF datasheet and find cross reference for our Trimming Potentiometer and capacitors.

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