Anti-bias circuit

Abstract

The invention provides an anti-bias circuit. The anti-bias circuit comprises a first comparison circuit, an integral circuit for outputting current regulation signals, a feedback circuit for outputting corresponding current feedback signals according to the bias condition and a power supply chip. The first comparison circuit receives the current regulation signals output by the integral circuit and the current feedback signals output by the feedback circuit, compares the current regulation signals with the current feedback signals and then outputs corresponding first level signals. The preset given input end of the power supply chip receives the first level signals and regulates the width of signals output by pulses according to the first level signals. The anti-bias circuit can automatically regulate the width of pulse signals output by the power supply chip according to the specific conditions such as bias or saturation, so that the bias influence is avoided; the anti-bias circuit is low in processing cost and convenient to use and popularize.

Description

technical field [0001] The invention relates to the technical field of inverter circuits, in particular to an anti-bias circuit. Background technique [0002] The inverter arc welding power supply has basically replaced the traditional industrial frequency transformer inverter voltage in the market at present, because it has a series of advantages such as high conversion efficiency, small size, light weight, and can realize fine control, etc., in some places that require frequent movement The occasions where it is used are favored by customers, such as outdoor billboard welding, door and window installation, etc. The market prospect is broad, but because the product threshold is low, many companies are crowded, resulting in the current market competition pressure and cost pressure are increasing, because the contest between cost and reliability is becoming more and more obvious. [0003] Among them, magnetic bias is a very common phenomenon in inverter circuits. Due to dev...

AI Technical Summary

Problems solved by technology

[0006] In view of the shortcomings of the prior art above, the purpose of the present invention is to provide an anti-bias circuit, which aims to solve the problem of high comprehensive cost of the bias treatment method in the prior art

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