Impedance adjustment device

Abstract

The present invention relates to an impedance adjustment device, comprising a power input port, a ground terminal, at least one capacitor and a power output port; the power input port is connected to a switching power supply, and the capacitor is connected to the power input port and the ground terminal, and the power output port is connected to the power input port and connected to an electronic device; through the parallel connection of the capacitor and the output filter capacitor of the switching power supply, the electronic device is connected to the When playing an audio signal, the power supply impedance of the audio signal amplifying circuit in the electronic device is relatively average in the audible frequency range, so that the amplifying circuit in the electronic device can have an average frequency response in the entire frequency band, so as to improve the performance of the electronic device in playing audio signals and High fidelity and real listening effect when viewing multimedia files.

Description

technical field [0001] The invention relates to an impedance adjustment device, in particular to a power supply impedance adjustment device generally applied to electronic devices with audio signal amplifying circuits. Background technique [0002] In an ideal capacitor, the impedance of the capacitor will become smaller and smaller as the input frequency increases. However, due to the manufacturing process of the actual capacitor, the actual capacitor contains parasitic inductance and resistance. According to this, when the actual capacitor receives the input frequency as the natural frequency, the impedance of the capacitor is the minimum value relative to other frequencies. In other words In other words, when the input frequency is greater than the natural frequency of the capacitor itself, the impedance of the capacitor will increase due to the parasitic inductance of the capacitor itself. [0003] see Figure 9 and Figure 10 As shown, as mentioned above, when the fre...

AI Technical Summary

Problems solved by technology

[0005] In view of the shortcomings of the prior art, the main purpose of the present invention is to provide an impedance adjustment device to further improve the impedance of the audio signal amplifier circuit caused by the audio signal when the electronic device is used to play music. The output bandwidth causes the problem that the output audio signal cannot be faithfully presented

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