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Voltage-adjustable direct current voltage stabilizing power supply

A DC stabilized power supply and voltage technology, applied in the field of electricity, can solve problems such as mechanical wear and system instability, and achieve the effect of reducing system cost and not affecting dynamic performance

Active Publication Date: 2012-02-01
BEIJING WUZI UNIVERSITY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0011] The embodiment of the present invention provides a voltage-adjustable DC stabilized power supply, which is used to solve the problems in the prior art that the voltage-adjustable DC stabilized power supply requires a mechanically structured switch to adjust the voltage, which causes mechanical wear, and thus brings about system problems. unstable problem

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Embodiment Construction

[0040] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0041] Such as Figure 4Shown is a schematic structural diagram of a voltage-adjustable DC stabilized power supply according to an embodiment of the present invention.

[0042] In the switching power supply or linear power supply, it also includes a setting resistor R3, a voltage setting circuit 400, a sampling circuit 401, and a control unit 402;

[0043] One end of the setting resistor R3 is connected to the feedback voltage point between the first voltage divid...

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Abstract

The invention relates to the field of electrics, in particular to a voltage-adjustable direct current voltage stabilizing power supply. In a switch power supply or a linear power supply, a voltage setting circuit is connected to the switch power supply or the linear power supply through a setting resistor and is used for generating setting voltage; and a control unit is used for controlling the setting voltage output by the voltage setting circuit according to the sampled voltage and / current information. According to the embodiment of the invention, the output voltage is adjusted by using an electronic mode, thus the problems that wear, ineffectiveness and the like are generated because a mechanical structure is adjusted in the prior art are avoided; in addition, more accurate adjustment on the output voltage of the power supply can be realized through a control chip.

Description

technical field [0001] The invention relates to the field of electricity, in particular to a DC stabilized power supply with adjustable voltage. Background technique [0002] DC power supply is an indispensable part of all kinds of electronic equipment. At the same time, in the process of developing different electronic products, DC power supplies with different voltage values ​​may be required. Therefore, adjustable DC power supplies have become necessary equipment for electronic product research and development laboratories. one. In addition, in some electronic equipment maintenance occasions and electrical characteristic tests of hardware circuits, adjustable DC regulated power supplies are required. [0003] There are many ways to generate DC voltage, which can be generally divided into two types: linear voltage regulation and switching voltage regulation. The linear DC power supply is realized by connecting a transistor in series between the input and the output. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/56
Inventor 郭键朱杰刘军郭奕崇董萍萍
Owner BEIJING WUZI UNIVERSITY
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