Adaptive wide-scope dc power source output short circuit protection device

A DC power supply, output short circuit technology, applied in circuit devices, automatic disconnection emergency protection devices, emergency protection circuit devices, etc. problem, to achieve the effect of strong versatility, small number and wide range

Active Publication Date: 2017-07-21
HUAIAN COLLEGE OF INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an adaptive wide-range DC power supply output short-circuit protection device. The problem of damage, and effectively solve the problem that the existing DC power supply short-circuit protection device can only be used for the same voltage level commonly used, and cannot protect the power supply of the non-used voltage level.

Method used

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  • Adaptive wide-scope dc power source output short circuit protection device

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Embodiment Construction

[0024] like figure 1 As shown, the short-circuit protection device of the present invention includes an external DC power supply 1, a short-circuit protection circuit, a protection circuit, an intermediate relay coil and an interlock circuit, and a DC load 22. The protection circuit includes a fuse FU 2 and a thermistor PTCRt3. The input terminal of the fuse FU 2 is connected to the positive polarity of the external DC power supply, the output terminal of the fuse FU 2 is connected to the input terminal of the thermistor PTCRt 3, and the on-off circuit includes the disconnect button SB1 4, the enable button SB2 5 and the holding circuit 6. The holding circuit 6 is composed of a plurality of normally open contacts of intermediate relays, the input terminal of the disconnect button SB1 4 is connected to the output terminal of the thermistor PTCRt 3, and the output terminal of the disconnect button SB1 4 is connected to the input terminal of the activation button SB2 5 , the norm...

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Abstract

The invention discloses an adaptive wide-scope dc power source output short circuit protection device. The short circuit protection device comprises an external dc power source (1), a short circuit protection circuit, a start-protection-stop circuit, a middle relay coil, an interlocking circuit and a DC load (22). The short circuit protection device is advantaged in that not only can a problem of damage to a power source, electric components or equipment caused by easily-generated load short circuit in a wiring process of electrical equipment in the prior art be solved, but also a problem that a DC power source short circuit protection device can only protect power sources in a same commonly-used voltage grade but not power sources in non-commonly-used voltage grades is solved.

Description

technical field [0001] The invention relates to the technical field of electric control, in particular to an adaptive wide-range DC power supply output short-circuit protection device. Background technique [0002] The loads used in many electrical equipment need to be driven by voltage. When the equipment components are installed and debugged at the initial stage or when there is miswiring in the equipment maintenance process, the load short circuit phenomenon often occurs; there are also college students, especially those majoring in electrical automation and mechatronics. When professional students are doing experiments, load short-circuit phenomenon will inevitably occur. When the load is short-circuited, it will trip slightly, and the fuse will explode in severe cases. The smoke and explosion sound accompanied by the damage of the fuse will make many students wonder. There is fear in the debugging of electrical control circuits or programming control system functions, w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02H3/087
CPCH02H3/087
Inventor 侍寿永夏路兵刘家骏朱静关士岩卢苗苗朱梦琦
Owner HUAIAN COLLEGE OF INFORMATION TECH
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