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Voltage stabilizer and electronic device

A technology of voltage stabilizer and electronic equipment, applied in the field of electronics, can solve the problems of unstable output voltage, high error, large ripple, etc., and achieve the effect of solving unstable output voltage

Active Publication Date: 2016-10-19
LENOVO (BEIJING) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention provides a voltage stabilizing device and electronic equipment, which are used to solve the technical problems of unstable output voltage, large ripple and high error in the electronic equipment in the prior art, and realize the stable voltage with small output ripple and high precision. technical effect

Method used

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  • Voltage stabilizer and electronic device

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Embodiment 1

[0062] Please refer to Figure 1A with Figure 1B , providing a structural block diagram of a voltage stabilizing device for Embodiment 1 of the present application, including:

[0063] The positive voltage output unit 10 includes a first comparison subunit 101 and a first adjustment current expansion subunit 102, wherein the first comparison subunit 101 is used to compare the received first positive voltage with the first reference voltage source voltage Comparing and correcting processing, outputting the first corrected positive voltage, the first adjusted current expansion sub-unit 102 is used to perform voltage stabilization and current expansion processing on the received first corrected positive voltage, and output the first stable voltage with the first ripple coefficient positive voltage;

[0064] The negative voltage output unit 20 includes a second comparison subunit 201 and a second adjustment and expansion subunit 202, wherein the second comparison subunit 201 is ...

Embodiment 2

[0088] Based on the same inventive concept as the first embodiment of the present application, the second embodiment of the present application provides an electronic device, including:

[0089] device body;

[0090] a voltage stabilizing device, arranged in the main body of the device, for stabilizing the voltage in the electronic device;

[0091] Wherein, the voltage stabilizing device includes:

[0092] The positive voltage output unit includes a first comparison subunit and a first adjustment current expansion subunit, wherein the first comparison subunit is used to compare the received first positive electrode voltage with the first reference voltage source voltage and Correction processing, outputting a first corrected positive voltage, the first adjusted current expansion subunit is used to perform voltage stabilization and current expansion processing on the received first corrected positive voltage, and output a first stable positive voltage with a first ripple coeff...

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Abstract

The invention discloses a voltage stabilizer and an electronic device. The voltage stabilizer comprises a positive voltage output unit and a negative voltage output unit, wherein the positive voltage output unit comprises a first comparison sub-unit and a first adjustment current-enlargement sub-unit; the first comparison sub-unit outputs a first corrected positive voltage through correcting the received first positive voltage according to a first voltage source reference voltage; the first adjustment current-enlargement sub-unit outputs a first stable positive voltage with a first ripple coefficient by performing voltage regulation and current enlargement on the received first corrected positive voltage; the negative voltage output unit comprises a second comparison sub-unit and a second adjustment current-enlargement sub-unit; the second comparison sub-unit outputs a first corrected negative voltage by correcting a received first cathode voltage according to ground voltage; the second adjustment current-enlargement sub-unit outputs a first stable negative voltage with the first ripple coefficient by performing current enlargement on the received first corrective negative voltage.

Description

technical field [0001] The invention relates to the field of electronic technology, in particular to a voltage stabilizing device and electronic equipment. Background technique [0002] With the continuous development of science and technology, the types and quantities of electronic equipment are increasing day by day. In order to meet the high precision requirements of electronic equipment and prolong the service life of electronic equipment, it is urgent to use high stability and high precision regulated power supply for power supply. [0003] In the prior art, the stabilized power supply is mainly composed of two modules: a rectifier and transformer circuit and a filter and stabilizer circuit. First, the single-phase or three-phase AC voltage is changed by the transformer to a voltage value suitable for the rectification circuit, and then rectified and filtered. The circuit obtains a unipolar DC voltage, and finally obtains a stable voltage through the processing of the v...

Claims

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Application Information

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IPC IPC(8): G05F1/56
Inventor 程凯
Owner LENOVO (BEIJING) CO LTD