Wide-range positive and negative high voltage regulating circuit and voltage regulating system

Abstract

The invention discloses a wide-range positive and negative high voltage regulating circuit and a voltage regulating system. The circuit comprises a control unit, a high voltage generating unit, a first driving unit, a first voltage regulating unit, a second driving unit, a second voltage regulating unit, a command voltage unit, an error amplifying unit and feedback unit. When output voltage needsto be regulated, the command voltage unit inputs command voltage to the error amplifying unit, the feedback unit inputs feedback voltage to the error amplifying unit, the error amplifying unit carriesout comparison and amplification and respectively inputs an operation result into the first driving unit and the second driving unit, the first driving unit drives the first voltage regulating unit to work, and the second driving unit drives the first voltage regulating unit to work, so as to regulate the output voltage. The circuit is capable of regulating the positive and negative DC voltage, is wide in voltage regulating range and high in regulating precision, and is capable of outputting positive and negative continuously-adjustable DC high voltage.

Description

technical field [0001] The invention relates to the technical field of voltage regulation, in particular to a wide-range positive and negative high-voltage voltage regulation circuit and a voltage regulation system. Background technique [0002] At present, electronic high-voltage DC power supplies with wide-range adjustable voltages are required in electronic equipment such as laser printers. Usually, such high-voltage DC power supplies are generated by a controlled electronic high-voltage generator. In many types of laser printers and other equipment, multiple independently adjustable high-voltage DC power supplies are required. Traditional high-voltage voltage regulation circuits usually use electronic high-voltage generators to achieve high-voltage voltage regulation. Although traditional electronic high-voltage generators can be very good However, there are still certain defects, that is, electronic components such as high-voltage transformers and high-power transistors...

AI Technical Summary

Problems solved by technology

However, the technical solutions disclosed in Patent Document 1 and Patent Document (2) that the series voltage regulation link and the parallel voltage regulation link work together to realize high-voltage regulation are only suitable for regulating single-polarity DC high voltage, which cannot meet the needs of many electronic devices such as laser printers. Requirements for wide-range positive and negative adjustable high-voltage DC power supplies required by equipment

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