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a surge current suppressor

A surge current and suppressor technology, applied in protection, electrical components, circuit devices and other directions that react to overcurrent, can solve problems such as suppressing current surges, and achieve the effects of cost reduction, advanced principles, and low power consumption

Active Publication Date: 2020-02-14
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 suppressor to solve the problems existing in the current surge suppressing method

Method used

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Embodiment Construction

[0024] In order to make the objectives, technical solutions and advantages 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 drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below ...

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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 connect a thermistor in series 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 inrush current, etc. [0003] However, these methods have the following problems: [0004] Not suitable for occasions with a wide operating temperature range; large power consumption; secondary surge; no over-current shutdown function or manual restart after over-current shutdown; high cost. Contents of the invention [0005] The object of the present invention is to provide a surge current suppressor to solve the problems existing in the existing methods for supp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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