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Secondary voltage relief switch stable voltage power source

A technology of switching power supply and switching power supply, which is applied in the direction of electrical components, adjusting electric variables, instruments, etc., to reduce the secondary multi-winding phenomenon, improve the best economic utilization rate, and reduce costs.

Inactive Publication Date: 2009-08-19
SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

First of all, how must we overcome the "no-load self-off" characteristic of the step-down switching power supply?

Method used

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  • Secondary voltage relief switch stable voltage power source
  • Secondary voltage relief switch stable voltage power source

Examples

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Embodiment Construction

[0033] The best way to realize this innovation will be described in detail below in conjunction with the accompanying drawings. It is no longer necessary to repeat what has been mentioned above or in combination with the existing technology or should be changed in the same way.

[0034] In the examples shown in Figure 1, Figure 2, Figure 4, and Figure 5, there are self-excited drive circuits with discrete components, which can be replaced by any purely excited integrated circuit IC.

[0035] [Figure 1] Example: A common step-down (BUCK) switching power supply stabilizes and outputs 5V, 12V, and 20V power supplies in multiple channels. The driving circuit and its terminal control circuit related to the switching power regulator tube V6 can be an integrated circuit IC or a self-excited driving circuit made up of discrete components with reference to [Fig. 5] circuit (62). The step-down switching power supply input terminal: from the first switching power supply (preferably incl...

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PUM

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Abstract

The invention relates to electrics and electron, in particular to the technical field of the power supply. After the public terminal G6 of a series inductive resistance choke L6 secondary multi-winding rectifying circuit in an isolation transformer secondary later voltage-reducing switch voltage-stabilizing power supply is superimposed on the high-voltage end of the main output end capacitor C6 of a series switch power supply for forming a bootstrapping output end, the fundamental characteristics for the multi-winding voltage-stabilizing output is formed. The innovation of the invention optimizes the optimal economic efficiency and overall power efficiency of a front-grade isolation transformer coil, reduces the front-grade isolation transformer T secondary multi-winding phenomenon, and significantly reduces the overall cost.

Description

technical field [0001] The invention relates to the technical fields of electric engineering and electronics. In particular, it involves the technical field of switching power supply and its application in TV or computer technology. Background technique [0002] In the prior art switching power supply (abbreviation: switching power supply), according to whether the DC component flowing through the switching power supply regulating tube is / is there a short-circuit loss? Switching power supply can be divided into: series (inductance step-down) switching power supply and (magnetic coupling) transformer switching power supply. [0003] According to whether the primary coil and secondary coil of the switching transformer are allowed to conduct at the same time? Switching power supply can be divided into: push-pull (AC transformer type) switching power supply and flyback switching power supply (ie: pure self-inductance energy storage switching power supply). [0004] Flyback sw...

Claims

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Application Information

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IPC IPC(8): G05F1/12H02M3/338
Inventor 戴俊
Owner SHENZHEN SKYWORTH RGB ELECTRONICS CO LTD
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