Transduction type active low-pass filter

Abstract

The invention relates to a transduction type active low-pass filter. The filter comprises a case, a heat absorbing layer, a filtering main body and four pins. The heat absorbing layer is arranged at the inner side of the case; the filtering main body is arranged at the central position in the case; the four pins are arranged around the filtering main body, and the filtering main body is electrically connected with the four pins via leads. Heat-dissipating graphite flakes fill the gap in the case; the two ends of the case are connected with a thermal energy conversion storage; one end of the thermal energy conversion storage is fixedly connected with an output port. The transduction type active low-pass filter is simple in structure. The heat-dissipating graphite flakes are three-dimensional in structure and not only has excellent heat conductivity in the vertical direction, but also could conduct heat in the longitudinal direction, so that the heat could be fast conducted to the heat absorbing layer via the characteristic of the longitudinal heat conduction when local thermal energy is too high. The thermal energy conversion storage could be used for converting the thermal energy into electric energy, and storing the electric energy to be used as power for the filter. The transduction type active low-pass filter is economical and environmental-friendly, and prolongs the service life of equipment, reduces the production cost, and is easy for popularization.

Description

technical field [0001] The invention relates to an active low-pass filter, in particular to a transduction type active low-pass filter. Background technique [0002] A filter is a device used to eliminate interference noise. It filters the input or output to obtain pure direct current. Its function is to allow the signal of a certain frequency to pass through smoothly, while the signal of another part of the frequency is subject to greater interference. Suppression, it is essentially a frequency selection circuit, the filter can be divided into active filter and passive filter, the active filter is composed of passive components (generally use R and C) and active devices (such as integrated operational amplifier )composition. [0003] A low-pass filter is an electronic filtering device that allows signals below the cut-off frequency to pass, but signals above the cut-off frequency cannot pass. Low-pass filters have many different forms, including electronic circuits and ima...

AI Technical Summary

Problems solved by technology

[0003]The low-pass filter is an electronic filtering device that allows signals below the cut-off frequency to pass, but signals above the cut-off frequency cannot pass through. There are many different types of low-pass filters These two tools provide a smooth form of the signal by eliminating short-term fluctuations and retaining long-term development trends. The role of low-pass filters in signal processing is equivalent to other fields such as The role played by the moving average in the financial field, its working principle is to set a frequency point, when the signal frequency is higher than this frequency, it cannot pass. In digital signals, this frequency point is also the cut-off frequency. When the frequency domain is higher than this frequency When the cut-off frequency is used, all assignments are 0, because in this process, all low-frequency signals are allowed to pass through, but the range of blocking and weakening will change according to different frequencies and different filtering procedures. Traditional active low-pass The filter has a complex structure, poor heat dissipation effect, low service life of the equipment, and large energy loss, which cannot meet the requirements of modernization

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