Power protection circuit and power supply
A power protection and circuit technology, applied in the field of circuits, can solve the problems of low precision of power protection circuits
Active Publication Date: 2020-12-25
GREE ELECTRIC APPLIANCES INC
View PDF8 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] Based on this, it is necessary to provide a power protection circuit and a 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 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 Construction
[0041] In order to make the above-mentioned purpose, features and advantages of the present application more obvious and understandable, the specific implementation manners of the present application will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the application. However, the present application can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present application. Therefore, the present application is not limited by the specific implementation disclosed below.
[0042] The serial numbers numbered for components in this document, such as "first", "second", etc., are only used to classify the described objects and do not have any sequence or technical meaning. The "connection" and "connection" mention...
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 relates to a power supply protection circuit and a power supply. A voltage transformation rectification circuit is used for being connected with an alternating-current power supply. A sampling circuit is connected with the voltage transformation rectification circuit. A detection circuit is connected with the sampling circuit and can accurately calculate and obtain a voltage comparison value according to the current value of the sampling circuit. A reference circuit is connected with the sampling circuit and the detection circuit. A comparison circuit is respectively connected with the detection circuit, the reference circuit and the voltage transformation rectification circuit. When the voltage comparison value is greater than the voltage reference value of the reference circuit, the comparison circuit can quickly control the voltage transformation and rectification circuit to be disconnected, so that the load is protected. A voltage comparison value can be accurately obtained through the detection circuit; and when the voltage comparison value is greater than the voltage reference value of the reference circuit, the comparison circuit can quickly respond to cut offthe transformation rectification circuit, so that the voltage at the output end of the voltage protection circuit can be accurately and timely controlled, and the purpose of protecting the load at theoutput end of the voltage protection circuit is achieved.
Description
technical field [0001] The present application relates to the field of circuits, in particular to a power supply protection circuit and a power supply. Background technique [0002] At present, the power supply circuit scheme generally adopts hardware protection, which is stabilized and clamped by diodes. Because the breakdown voltage and current error of the diode itself is large, the protection accuracy of the entire circuit is low, and it is not suitable for high-precision circuits or chip circuits that require relatively high voltage accuracy. Contents of the invention [0003] Based on this, it is necessary to provide a power protection circuit and a power supply for the problem of low precision of the existing power protection circuit. [0004] A power protection circuit, comprising: [0005] Transformer and rectifier circuit, used to connect with AC power supply; [0006] A sampling circuit connected to the transformer rectification circuit; [0007] A detection...
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): H02H3/20H02H7/125
CPCH02H3/202H02H7/1257
Inventor 余凯解海龙杨帆刘文斌李耀栋黄伟
Owner GREE ELECTRIC APPLIANCES INC