Current regulating circuit

Abstract

The embodiment of the invention discloses a current regulating circuit, which comprises a far-end voltage signal generating circuit, a signal optocoupler isolation circuit and a signal processing output circuit, and is characterized in that the signal optocoupler isolation circuit is electrically connected with the far-end voltage signal generating circuit and the signal processing output circuit,the far-end voltage signal generation circuit is used for generating a first voltage signal according to an input signal of the far-end voltage signal generation circuit and filtering the high-frequency signal in the first voltage signal to obtain a second voltage signal, the signal optocoupler isolation circuit is used for performing optocoupler isolation on the second voltage signal, and the signal processing output circuit is used for processing the signal outputted by the signal optocoupler isolation circuit and outputting a current signal. According to the current regulating circuit provided by the embodiment of the invention, the high-frequency signals in the voltage signals are filtered through the far-end voltage signal generating circuit, the high-frequency interference in the circuit is reduced, the remote current regulation is realized, and the reliability of the circuit is improved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of current control, and in particular, to a current regulation circuit. Background technique [0002] With the application and development of argon arc welding machine control technology, the use of welding machines with remote adjustment function is becoming more and more popular. Taking the usage of the client as an example, various large-scale machines need to control the output current of the machine remotely. current regulation circuit to control the output current. [0003] At present, in the existing current regulation circuit, when the function of the welding machine is adjusted at the remote end and the remote control is carried out, there are high-frequency interference signals on the current regulation circuit, which affects the reliability of the circuit and becomes a major obstacle to the remote control of the welding machine. Contents of the invention [0004] The inven...

AI Technical Summary

Problems solved by technology

[0003] At present, in the existing current regulation circuit, when the function of the welding machine is adjusted remotely and the remote control is performed remotely, there are high-frequency interference signals on the current regulation circuit, which affects the reliability of the circuit and becomes a major obstacle to the remote control of the welding machine.

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