Buffer circuit for suppressing surge current and use method thereof
A surge current and buffer circuit technology, which is applied to emergency protection circuit devices, circuit devices, and emergency protection circuit devices for limiting overcurrent/overvoltage, and can solve problems such as the safety impact of power supply networks and load electrical equipment , to achieve the effect of suppressing the surge current
Active Publication Date: 2021-06-04
SOURCE PHOTONICS CHENGDU
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[0003] like image 3 As shown, waveform A is the current waveform output by the traditional DC power supply unit after power-on, in which the peak on the left is the surge current generated on the circuit cooler, which is related to temperature, and the peak on the right is the surge generated on the load Current, which has nothing to do with temperature, it can be seen that the surge current generated on the load is very high, which will affect the safety of the power supply network and load electrical equipment
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[0036] 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. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.
[0037] It should be noted that like numerals and let...
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The invention relates to a buffer circuit for suppressing surge current and a use method thereof. The buffer circuit comprises a direct current power supply unit used for outputting power supply voltage to a load; a power output unit, used for transmitting the voltage output by the direct-current power supply unit to a load; a buffer unit, connected with the power output unit and outputting buffer voltage before the direct-current power supply unit is started so as to suppress surge current generated when the direct-current power supply unit is started. According to the scheme, the buffer unit is added to a traditional direct-current power supply circuit, and the added buffer unit is started before direct-current power supply, outputs the buffer voltage and is used for suppressing the time when the direct-current power supply unit outputs the power supply voltage Vout, so that the output power supply voltage Vout rises slowly, and the purpose of suppressing surge current is achieved.
Description
technical field [0001] The invention relates to the technical field of circuit data processing, in particular to a buffer circuit for suppressing surge current and a use method thereof. Background technique [0002] Surge current (surge current) refers to the current characteristics of electrical equipment at the moment of switching on. It is very important to the safety of power supply network and electrical equipment. In engineering, it is usually necessary to suppress the surge current. [0003] Such as image 3 As shown, waveform A is the current waveform output by the traditional DC power supply unit after power-on, in which the peak on the left is the surge current generated on the circuit cooler, which is related to temperature, and the peak on the right is the surge generated on the load Current, which has nothing to do with temperature, it can be seen that the surge current generated on the load is very high, which will affect the safety of the power supply network ...
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Login to View More IPC IPC(8): H02H9/02
CPCH02H9/025Y02B70/10
Inventor 杨洪谢初旭刘陈琼包小斌
Owner SOURCE PHOTONICS CHENGDU