CN204886148U - Light current switch - Google Patents

Light current switch Download PDF

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Publication number
CN204886148U
CN204886148U CN201420840064.8U CN201420840064U CN204886148U CN 204886148 U CN204886148 U CN 204886148U CN 201420840064 U CN201420840064 U CN 201420840064U CN 204886148 U CN204886148 U CN 204886148U
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China
Prior art keywords
triodes
circuit
switch
resistance
pin
Prior art date
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Active
Application number
CN201420840064.8U
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Chinese (zh)
Inventor
钟义
贺乃瑞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongguan Xingkaitai Electronic Technology Co Ltd
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Dongguan Xingkaitai Electronic Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by Dongguan Xingkaitai Electronic Technology Co Ltd filed Critical Dongguan Xingkaitai Electronic Technology Co Ltd
Priority to CN201420840064.8U priority Critical patent/CN204886148U/en
Application granted granted Critical
Publication of CN204886148U publication Critical patent/CN204886148U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model provides a light current switch, includes power supply module, rectifier circuit, by the base interconnect of two triodes, the projecting pole of two triodes is the drive circuit that constitutes of interconnect also, the base wiring end of two triodes is connected with a switch through a resistance, another pin of switch and rectifier circuit is connected, still includes to reach relevant resistance, the light current switch control circuit that electric capacity is formed by MOS pipe and the 2nd MOS pipe, a pin of one of them MOS pipe is connected through the projecting pole of a resistance with two triodes, is connected with the short -circuit protection circuit who comprises triode and resistance and electric capacity on the pin that another MOS managed still be equipped with the 3rd a MOS pipe that is used for controlling the earth circuit on the projecting pole tie point of two triodes. Replace big current -controlled switch with little signal switch to save space greatly and the cost, guarantee the fail safe nature of battery again, the utility model discloses mainly be applied to the load of battery and turn -off control.

Description

Light current switch
Technical field
The utility model relates to appliance switch, is specifically related to a kind of light current switch for controlling electric device.
Background technology
Along with the fast development of lithium battery; electric bicycle; electric tool is universal all the more and extensive. and their on-off mode is nearly all the shutoff directly being controlled big current by switch; switch cost is higher; or the switch of some small-signal control big current also just simply plays on-off action; once need to be recovered by disconnecting consumers after overcurrent or short-circuit protection, cause the inconvenience used.
Utility model content
The purpose of this utility model is: for the above-mentioned defect of prior art, provides a kind of light current switch for controlling electric device.
A kind of light current switch is provided, by small-signal control switch, reset circuit, drive circuit three part forms; Comprise power supply module, rectification circuit, be interconnected by the base stage of two triodes, the emitter of two triodes is also interconnected the drive circuit of composition, the base terminal of two triodes is connected with a switch by a resistance, another pin of switch is connected with described rectification circuit, also comprises the light current ON-OFF control circuit be made up of the first metal-oxide-semiconductor and the second metal-oxide-semiconductor and relevant resistance, electric capacity; A pin of one of them metal-oxide-semiconductor is connected by the emitter of a resistance with described two triodes; a pin of another metal-oxide-semiconductor being connected with the short-circuit protection circuit be made up of triode and resistance and electric capacity, the emitter tie point of described two triodes being also provided with one for controlling the 3rd metal-oxide-semiconductor of earthed circuit.
Beneficial effect: the present invention adopts metal-oxide-semiconductor to form electronic switch, while employing small-signal controls big current, after overcurrent and short-circuit protection, reset even if also reopen by switch without disconnecting consumers. export under being in short circuit or overcurrent loading condition always, also guard mode can be entered again by normal reset. so just substitute big current control switch with small-signal switch completely, thus greatly save space and cost, ensure again the security reliability of battery; The load that the utility model is mainly used in battery turns off control.
Accompanying drawing explanation
Fig. 1 is the utility model light current switching circuit schematic diagram.
Embodiment
With reference to shown in Fig. 1: design a kind of light current switch, comprise power supply module, rectification circuit, be interconnected by the base stage of two triodes, the emitter of two triodes is also interconnected the drive circuit of composition, the base terminal of two triodes is connected with a switch by a resistance, another pin of switch is connected with described rectification circuit, also comprises the light current ON-OFF control circuit be made up of the first metal-oxide-semiconductor and the second metal-oxide-semiconductor and relevant resistance, electric capacity; A pin of one of them metal-oxide-semiconductor is connected by the emitter of a resistance with described two triodes; a pin of another metal-oxide-semiconductor being connected with the short-circuit protection circuit be made up of triode and resistance and electric capacity, the emitter tie point of described two triodes being also provided with one for controlling the 3rd metal-oxide-semiconductor of earthed circuit.
While employing small-signal controls big current, after overcurrent and short-circuit protection, reset even if also reopen by switch without disconnecting consumers. export under being in short circuit or overcurrent loading condition always, also guard mode can be entered again by normal reset. so just substitute big current control switch with small-signal switch completely, thus greatly save space and cost, ensure again the security reliability of battery; The load that the utility model is mainly used in battery turns off control.

Claims (1)

1. a light current switch, comprise power supply module, rectification circuit, be interconnected by the base stage of two triodes, the emitter of two triodes is also interconnected the drive circuit of composition, the base terminal of two triodes is connected with a switch by a resistance, another pin of switch is connected with described rectification circuit, it is characterized in that: also comprise the light current ON-OFF control circuit be made up of the first metal-oxide-semiconductor and the second metal-oxide-semiconductor and relevant resistance, electric capacity; A pin of one of them metal-oxide-semiconductor is connected by the emitter of a resistance with described two triodes; a pin of another metal-oxide-semiconductor being connected with the short-circuit protection circuit be made up of triode and resistance and electric capacity, the emitter tie point of described two triodes being also provided with one for controlling the 3rd metal-oxide-semiconductor of earthed circuit.
CN201420840064.8U 2014-12-26 2014-12-26 Light current switch Active CN204886148U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420840064.8U CN204886148U (en) 2014-12-26 2014-12-26 Light current switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420840064.8U CN204886148U (en) 2014-12-26 2014-12-26 Light current switch

Publications (1)

Publication Number Publication Date
CN204886148U true CN204886148U (en) 2015-12-16

Family

ID=54830480

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420840064.8U Active CN204886148U (en) 2014-12-26 2014-12-26 Light current switch

Country Status (1)

Country Link
CN (1) CN204886148U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113163550A (en) * 2021-04-16 2021-07-23 深圳市恒耀光电科技有限公司 Dimming high-compatibility LED driving power supply and control method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113163550A (en) * 2021-04-16 2021-07-23 深圳市恒耀光电科技有限公司 Dimming high-compatibility LED driving power supply and control method thereof

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