Surge current suppressor

A surge current and suppressor technology, which is applied in the direction of overcurrent protection, electrical components, circuit devices, etc., can solve problems such as suppressing current surges, and achieve cost reduction, advanced principles, and low power consumption.

Active Publication Date: 2018-12-07
LEIHUA ELECTRONICS TECH RES INST AVIATION IND OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a surge current sup

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Embodiment Construction

[0024] In order to make the objectives, technical solutions, and advantages of the implementation of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below in conjunction with the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention, but should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present inv...

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Abstract

The invention relates to the field of airborne electronic equipment power electronics, in particular to a surge current suppressor. The surge current suppressor is connected to the circuit of the input power supply in series and comprises a power MOS tube connected in series in the circuit of a direct-current input negative end; a current measuring element connected in series in the circuit of thedirect-current input negative end and used for inputting the current of the power supply circuit and converting the current into a voltage; a feedback circuit connected with the current measuring element and the power MOS tube, when the voltage value detected by the current measuring element is larger than or equal to the first preset value, the power MOS tube is enabled to be in a current limiting state. The surge current suppressor is advanced and reliable in principle and can achieve a startup surge suppression function, and compared with the traditional mode, the function realization is simple and reliable, and the power consumption is low, the cost is low, the occupied area of the printed board is small, and the weight is light.

Description

Technical field [0001] The invention relates to the field of power electronics of airborne electronic equipment, in particular to a surge current suppressor. Background technique [0002] The traditional method of suppressing current surges is generally to string a thermistor in the loop; or to connect a current limiting resistor in series with a power switch in parallel in the loop; or directly use a power MOS tube to limit the surge current; or use an application specific integrated circuit Control surge current and so on. [0003] However, these methods will have the following problems: [0004] Not suitable for occasions with a wide operating temperature range; high power consumption; secondary surge; no overcurrent shutdown function or manual restart after overcurrent shutdown; high cost and other issues. Summary of the invention [0005] The purpose of the present invention is to provide a surge current suppressor to solve the problems existing in the current surge suppression...

Claims

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Application Information

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IPC IPC(8): H02H9/02H02H3/08H02H3/06
CPCH02H3/06H02H3/08H02H9/025
Inventor 季彦艳梁小宙林昱君
Owner LEIHUA ELECTRONICS TECH RES INST AVIATION IND OF CHINA
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