Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Power supply switching device and method as well as projection device applying power supply switching device

A technology for power switching and projection devices, applied in circuit devices, projection devices, emergency power arrangements, etc., can solve problems such as large voltage drop and affect power supply stability, and achieve the effect of improving stability

Inactive Publication Date: 2011-06-01
CORETRONIC
View PDF5 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, when the load of the power switching device 200 is heavy, a large voltage drop may occur after switching the DC power supply V1 and the DC power supply V2. off), hang up, or reset
Even, when the voltage levels of the DC power supply V1 and the DC power supply V2 are close, the comparator 201 may continue to alternately switch the transistor T1 and the transistor T2, and cause the output voltage Vout to drop, thereby affecting the stability of the power supply

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Power supply switching device and method as well as projection device applying power supply switching device
  • Power supply switching device and method as well as projection device applying power supply switching device
  • Power supply switching device and method as well as projection device applying power supply switching device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] The aforementioned and other technical contents, features and functions of the present invention will be clearly presented in the following detailed descriptions of multiple embodiments in conjunction with the accompanying drawings. The directional terms mentioned in the following embodiments, such as "upper", "lower", "front", "rear", "left", "right", etc., are only referring to the directions of the drawings. Accordingly, the directional terms are used to illustrate, not to limit, the invention.

[0030] image 3 A system block diagram of a projection device 300 according to an embodiment of the present invention is shown. Please refer to image 3 The projection device 300 includes a rechargeable battery 301 , an interface 303 , a power switching device 305 , a DC / DC converter 307 , internal components 309 of the projection device 300 , and a power adapter 311 . In the present embodiment, the rechargeable battery 301 is used to supply the first power V1; Power V2....

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a power supply switching device and method as well as a projection device applying the power supply switching device, wherein the power supply switching method comprises the following steps: receiving and comparing voltage the level of a first power supply and the voltage level of a second power supply; utilizing one with the lower voltage level of the first power supply and the second power supply to assist one with the higher voltage level of the first power supply and the second power supply till the one with the higher voltage level of the first power supply and the second power supply is stable; and outputting the one with the higher and stable voltage level of the first power supply and the second power supply to serve as an output voltage.

Description

technical field [0001] The present invention relates to a power switching technology, and in particular to a power switching device, its method, and a projection device using the power switching device. Background technique [0002] Generally speaking, since a projector can project images on a larger screen so that more people can watch the content displayed on the screen at the same time, it is often used in public places such as companies and schools. In addition, as household display products tend to be larger in size, projection devices are gradually popularized in ordinary households and become a common electronic product in modern life. [0003] With the advancement of science and technology, all kinds of electronic products are developing towards the trend of high speed, high performance, light weight and short size. Under this trend, Pico projector (or mini projector) has gradually become the personal digital market in the future. mainstream. Generally, light emitt...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02J9/06G03B21/14
CPCH02J1/10G03B2217/007
Inventor 张奕舜王茂安
Owner CORETRONIC
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com