BDKJ-FC I type compensation device With the wide application of power electronics technology, higher harmonics generated by nonlinear loads of modern industrial and mining enterprises into the power system, causing the supply voltage waveform distortion, reduce power quality, capacitor banks can not be put into harmonic control device manufacturers, electricity companies to accelerate the harmonic control equipment damage frequency furnace, the use of lower electricity rates, a waste of energy. Looking to improve governance harmonic active filter active filter, on the one hand depends on the progress of components and integration technology, but it is also dependent on the circuit configuration and design innovation. Although RC active filter integrated energy mix, but fully integrated high quality RC active filter still unsolved. The main difficulty is not directly integrated precision resistive and capacitive elements on the chip, and a large share of the chip resistor and large capacitor area is too large. Switched capacitor filter to solve this problem opened the way to achieve a fully integrated; but it belongs to a discrete-time analog filters, and there is work to be improved and low frequency bands. An integrated filter to achieve precise resistance program is the use of linear MOS transistor (ie, unsaturated) zone to act as analog resistive characteristic harmonic control equipment manufacturers, which is a voltage controlled by a gate voltage controlled resistance, so Available chip (ie outside the chip) reference value, such as a crystal clock or an external RC components within complex chip control circuit to precisely adjust the time constant of the circuit. This is a promising solution. There is also a composition with a transconductance operational amplifier (OTA) and capacitance C of the active filter, also promising a fully integrated solution. Harmonic drive, learning Connaught Electrical and Mechanical, Zhenping harmonic control is provided by conventional Connaught Mechanical and Electrical Equipment Co., Ltd., Henan. Henan Xi Connaught Electrical Equipment Co. (www.hnxinuo.com) is Zhengzhou, electronics, electrical products processing leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In practice Connaught Electrical and Mechanical leadership with the staff warmly welcome all inquiries negotiations to create learning Connaught Electrical and Mechanical better future.