Protection circuit and power supply system
A technology for protecting circuits and protecting modules, applied in the field of electronics, can solve problems such as waste of human resources, damage, and consumption costs
Inactive Publication Date: 2017-05-03
FAURECIA CLARION ELECTRONICS (XIAMEN) CO LTD
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Problems solved by technology
Therefore, in the process of using the protection circuit in the prior art, when the current output by the power supply equipment 11 is too large, the fuse blows and causes damage to the devices on the circuit. When the circuit needs to be restored, the devices on the circuit need to be replaced, thus wasting human resources and cost
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[0051] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0052] It should be noted that, in order to clearly describe the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, words such as "first" and "second" are used for the same or similar items with basically the same function and effect To make a distinction, those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order. The power supply devi...
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The embodiment of the invention provides a protection circuit and a power supply system, which relate to the technical field of electronics for repeated use to reduce short circuit risks of power consumption equipment. The protection circuit comprises a current input end, a current output end, a protection module and a control module, wherein the protection module is connected with the current input end, the current output end and the control module. When the protection module detects current in a circuit of the current input end and the current output end is smaller than or equal to a preset current threshold, conduction of the current input end and the current output end is kept. When the protection module detects current in the circuit of the current input end and the current output end is larger than the preset current threshold, first control signals are outputted to the control module. The control module outputs second control signals to the protection module according to the received first control signals. The protection module breaks the circuit of the current input end and the current output end according to the received second control signals. The embodiment of the invention is used for the protection circuit.
Description
technical field [0001] The invention relates to the field of electronic technology, in particular to a protection circuit and a power supply system. Background technique [0002] In the power supply system, it usually includes power supply equipment and electrical equipment. Whether the power supply equipment is normal or not has always been one of the important guarantees for the normal operation of electrical equipment. The technical specifications and indicators of power supply equipment vary with different electrical equipment, and short circuit protection is one of the most important functions. [0003] In the process of the power supply equipment supplying power to the connected electrical equipment, if the electrical equipment fails, such as a short circuit, etc., the output current of the power supply equipment will be too large, and the electrical equipment will work at extremely high temperature, which will increase the power consumption. The loss of electrical eq...
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Inventor 林建
Owner FAURECIA CLARION ELECTRONICS (XIAMEN) CO LTD