A multi-input power switching circuit
A power switching and multi-input technology, which is applied in circuit devices, emergency power arrangements, electrical components, etc., can solve problems such as unreliable switching, occupation of control device pins, and inability to realize automatic switching, so as to save battery power and prolong work. the effect of time
Active Publication Date: 2016-09-21
QINGDAO GOERTEK
View PDF4 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0006] In order to solve the technical problem that the existing multi-input power switching circuit cannot realize automatic switching, or the switching needs to occupy the pins of the control device, and the switching is unreliable, the present invention proposes a multi-input power switching circuit, which can solve the above problems
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0024] Embodiment 1, this embodiment proposes a multi-input power switching circuit, such as figure 1 As shown, it includes a second power input detection circuit, a third power input detection circuit, a first power supply voltage output switch circuit, and a second power supply voltage output switch circuit, the second power input detection circuit and the third power input detection circuit The input terminals of the second power supply V2 and the third power supply V3 are respectively connected in one-to-one correspondence, and the output terminal of the second power supply input detection circuit is connected with the control terminal of the second power supply voltage output switch circuit for controlling the second The power supply voltage output switching circuit turns on or off the second power supply voltage output, and the output end of the third power input detection circuit is connected to the control end of the second power input detection circuit for controlling ...
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
Login to View More Abstract
The invention discloses a switching circuit for multiple input power sources. The switching circuit for the multiple input power sources comprises a second power source input detection circuit, a third power source input detection circuit, a first power source voltage output switch circuit and a second power source voltage output switch circuit, wherein the input ends of the second power source input detection circuit and the third power source input detection circuit are connected with the second power source and the third power source in a one-to-one correspondence mode, the output end of the second power source input detection circuit is connected with a control end of the second power source voltage output switch circuit, the output end of the third power source input detection circuit is connected with the control end of the second power source input detection circuit, and the control end of the first power source voltage output switch circuit is connected with the second power source and the third power source. According to the switching circuit for the multiple input power sources, independent electronic elements are used for setting up a circuit, the power source with a higher priority can be automatically switched to for power supply according to the priority, the switching circuit does not need to be connected with an external control device, and the production cost is reduced.
Description
technical field [0001] The invention relates to a multi-input power switching circuit, in particular to an automatic switching supply according to the priority sequence of the input power. Background technique [0002] When electronic equipment is working, in order to achieve a long working time or to be applicable to various working environments, usually the power supply part of electronic equipment is not only designed to be able to use the built-in lithium battery in the electronic equipment, but also through the external USB ports, or special external adapters, etc. to supply power, so that there will be at least three power sources that can supply power, and the three power sources have a certain level of power supply priority. When two or more power sources are connected at the same time, there will be power supplies switching problem. [0003] At present, two-way power supply switching is the most common, and the implementation is also the simplest, but this switchin...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H02J9/06H03K17/687
Inventor 刘东宝
Owner QINGDAO GOERTEK