CN205333724U - Stand -by power supply voltage detecting early warning circuit - Google Patents

Stand -by power supply voltage detecting early warning circuit Download PDF

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Publication number
CN205333724U
CN205333724U CN201521136344.1U CN201521136344U CN205333724U CN 205333724 U CN205333724 U CN 205333724U CN 201521136344 U CN201521136344 U CN 201521136344U CN 205333724 U CN205333724 U CN 205333724U
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CN
China
Prior art keywords
end
connects
resistance
power supply
stand
Prior art date
Application number
CN201521136344.1U
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Chinese (zh)
Inventor
史苏娟
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苏州市计量测试研究所
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Priority to CN201521136344.1U priority Critical patent/CN205333724U/en
Application granted granted Critical
Publication of CN205333724U publication Critical patent/CN205333724U/en

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Abstract

The utility model discloses a stand -by power supply voltage detecting early warning circuit, including stand -by power supply E, resistance R1, resistance R2, potentiometre RP1 summation potential ware RP2, potentiometre RP1's a stiff end is connected to resistance R1's one end connecting resistance R2, resistance R3, resistance R5, electric capacity C1, stand -by power supply E's positive pole, relay J and triode V2's collecting electrode, resistance R1's the other end, another stiff end ground connection of potentiometre RP1, and diode D2's negative pole is connected to potentiometre RP1's slip end, and triode V2's base, triode V2's projecting pole connecting resistance R4 is connected to diode D2's positive pole. The utility model discloses stand -by power supply voltage detecting early warning circuit not only simple structure, electronic component use amount is few, has the function that under -voltage warning and excessive pressure were reported to the police moreover simultaneously, has still set up anti interruption module in the circuit simultaneously, prevents the saltus step when voltage is in near warning critical value, consequently has various, the with low costs and convenient to use's of function advantage.

Description

A kind of backup power source voltage detection early warning circuit

Technical field

This utility model relates to a kind of power circuit, specifically a kind of backup power source voltage detection early warning circuit。

Background technology

Development along with electric utility, the life of people has be unable to do without electric energy, although it is fine that present electric power facility is built, but still there will be because repairing the roads, the interim power-off that the reasons such as finishing cause, this interim power-off can bring constant greatly to the life of people under some particular cases, such as, food in refrigerator is because power-off can quickly be gone bad, or use electromagnetic oven to cook to accomplish half the power supply failed, family's stand-by power supply can effectively solve this problem, but the most function singleness of existing stand-by power supply, the situation of its builtin voltage cannot intuitive judgment, if just finding undertension when using stand-by power supply, great inconvenience will be brought。

Utility model content

The purpose of this utility model is in that to provide a kind of backup power source voltage detection early warning circuit, with the problem solving to propose in above-mentioned background technology。

For achieving the above object, this utility model provides following technical scheme:

A kind of backup power source voltage detection early warning circuit, including stand-by power supply E, resistance R1, resistance R2, potentiometer RP1 and potentiometer RP2, one end of described resistance R1 connects resistance R2, resistance R3, resistance R5, electric capacity C1, the positive pole of stand-by power supply E, the colelctor electrode of relay J and audion V2, the other end of resistance R1 connects a fixing end of potentiometer RP1, another fixing end ground connection of potentiometer RP1, the sliding end of potentiometer RP1 connects the negative electrode of diode D2, the base stage of the anode connecting triode V2 of diode D2, the emitter stage of audion V2 connects resistance R4, the other end of resistance R4 connects the anode of diode D4, the negative electrode of diode D4 connects the negative electrode of diode D3 and the base stage of audion V3, the other end of resistance R2 connects a fixing end of potentiometer RP2, another fixing end ground connection of potentiometer RP2, the sliding end of potentiometer RP2 connects the negative electrode of diode D2, the base stage of the anode connecting triode V2 of diode D2, the emitter stage of audion V2 connects ground connection, the colelctor electrode of audion V1 connects the anode of diode D4, the other end of electric capacity C1 connects the other end of relay J and the colelctor electrode of audion V3, the grounded emitter of audion V3, the other end of resistance R5 connects the contact J-1 of relay J, the other end of the contact J-1 of relay J connects buzzer B, the other end ground connection of buzzer B。

As preferred version of the present utility model: described diode D3 is Yellow light emitting diode, diode D4 is red light-emitting diode。

Compared with prior art, the beneficial effects of the utility model are: early warning circuit is not only simple in structure the detection of this utility model backup power source voltage, electronic component makes consumption few, and there is the function of undervoltage warning and over voltage alarm simultaneously, circuit is also provided with immunity module simultaneously, saltus step when preventing voltage to be near warning marginal value, therefore has the advantage that diverse in function, cost are low and easy to use。

Accompanying drawing explanation

Fig. 1 is the circuit diagram of backup power source voltage detection early warning circuit。

Detailed description of the invention

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of this utility model, rather than whole embodiments。Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of this utility model protection。

Refer to Fig. 1, a kind of backup power source voltage detection early warning circuit, including stand-by power supply E, resistance R1, resistance R2, potentiometer RP1 and potentiometer RP2, one end of described resistance R1 connects resistance R2, resistance R3, resistance R5, electric capacity C1, the positive pole of stand-by power supply E, the colelctor electrode of relay J and audion V2, the other end of resistance R1 connects a fixing end of potentiometer RP1, another fixing end ground connection of potentiometer RP1, the sliding end of potentiometer RP1 connects the negative electrode of diode D2, the base stage of the anode connecting triode V2 of diode D2, the emitter stage of audion V2 connects resistance R4, the other end of resistance R4 connects the anode of diode D4, the negative electrode of diode D4 connects the negative electrode of diode D3 and the base stage of audion V3, the other end of resistance R2 connects a fixing end of potentiometer RP2, another fixing end ground connection of potentiometer RP2, the sliding end of potentiometer RP2 connects the negative electrode of diode D2, the base stage of the anode connecting triode V2 of diode D2, the emitter stage of audion V2 connects ground connection, the colelctor electrode of audion V1 connects the anode of diode D4, the other end of electric capacity C1 connects the other end of relay J and the colelctor electrode of audion V3, the grounded emitter of audion V3, the other end of resistance R5 connects the contact J-1 of relay J, the other end of the contact J-1 of relay J connects buzzer B, the other end ground connection of buzzer B。

Described diode D3 is Yellow light emitting diode, and diode D4 is red light-emitting diode。

Operation principle of the present utility model is: resistance R1, potentiometer RP1, resistance R2, potentiometer RP2 forms two groups of voltage detection module, wherein resistance R2, potentiometer RP2, audion V1, diode D3 and audion V3 forms undervoltage warning switch, when the voltage of stand-by power supply E is normal, it is enough to breakdown diode D1 by the voltage after resistance R2 and potentiometer RP2 dividing potential drop, it is added in the base stage of audion V1, audion V1 turns on, therefore light emitting diode D3 is not turned on, the base stage of audion V3 must not be electric, audion V3 ends, relay J is failure to actuate, resistance R1, potentiometer RP1, audion V2, diode D4 and audion V3 forms over voltage alarm switch, when the voltage of stand-by power supply E is normal, by the undertension after resistance R2 and potentiometer RP2 dividing potential drop with breakdown diode D1, therefore audion V2 cut-off, therefore light emitting diode D4 is not turned on, the base stage of audion V3 must not be electric, audion V3 ends, relay J is failure to actuate, the under-voltage marginal value of stand-by power supply and overvoltage marginal value is set respectively by potentiometer RP1 and potentiometer RP2, when the voltage of stand-by power supply E is lower than the lower limit set, undertension after resistance R2 and potentiometer RP2 dividing potential drop is with breakdown diode D1, therefore audion V1 cut-off, diode D3 turns on luminescence, audion V3 turns on, relay J is energized, the J-1 adhesive of its contact, buzzer B sends chimes of doom, when the voltage of stand-by power supply is higher than setting value, voltage after resistance R1 and potentiometer RP1 dividing potential drop is enough to breakdown diode D2, therefore audion V2 conducting, diode D4 is luminous, audion V3 turns on, the contact J-1 adhesive of relay J, buzzer B reports to the police, saltus step repeatedly when the electric capacity C1 of relay J two ends parallel connection is for preventing stand-by power supply E voltage to be near under-voltage marginal value and overvoltage marginal value, increase stability and the anti-interference of circuit。

Claims (2)

1. a backup power source voltage detection early warning circuit, including stand-by power supply E, resistance R1, resistance R2, potentiometer RP1 and potentiometer RP2, it is characterized in that, one end of described resistance R1 connects resistance R2, resistance R3, resistance R5, electric capacity C1, the positive pole of stand-by power supply E, the colelctor electrode of relay J and audion V2, the other end of resistance R1 connects a fixing end of potentiometer RP1, another fixing end ground connection of potentiometer RP1, the sliding end of potentiometer RP1 connects the negative electrode of diode D2, the base stage of the anode connecting triode V2 of diode D2, the emitter stage of audion V2 connects resistance R4, the other end of resistance R4 connects the anode of diode D4, the negative electrode of diode D4 connects the negative electrode of diode D3 and the base stage of audion V3, the other end of resistance R2 connects a fixing end of potentiometer RP2, another fixing end ground connection of potentiometer RP2, the sliding end of potentiometer RP2 connects the negative electrode of diode D2, the base stage of the anode connecting triode V2 of diode D2, the emitter stage of audion V2 connects ground connection, the colelctor electrode of audion V1 connects the anode of diode D4, the other end of electric capacity C1 connects the other end of relay J and the colelctor electrode of audion V3, the grounded emitter of audion V3, the other end of resistance R5 connects the contact J-1 of relay J, the other end of the contact J-1 of relay J connects buzzer B, the other end ground connection of buzzer B。
2. a kind of backup power source voltage detection early warning circuit according to claim 1, it is characterised in that described diode D3 is Yellow light emitting diode, and diode D4 is red light-emitting diode。
CN201521136344.1U 2015-12-31 2015-12-31 Stand -by power supply voltage detecting early warning circuit CN205333724U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201521136344.1U CN205333724U (en) 2015-12-31 2015-12-31 Stand -by power supply voltage detecting early warning circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201521136344.1U CN205333724U (en) 2015-12-31 2015-12-31 Stand -by power supply voltage detecting early warning circuit

Publications (1)

Publication Number Publication Date
CN205333724U true CN205333724U (en) 2016-06-22

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CN201521136344.1U CN205333724U (en) 2015-12-31 2015-12-31 Stand -by power supply voltage detecting early warning circuit

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106253233A (en) * 2016-09-30 2016-12-21 成都烨辰新材料科技有限公司 Intelligent clothes cabinet overvoltage regulating circuit
CN106300245A (en) * 2016-09-30 2017-01-04 成都烨辰新材料科技有限公司 Intelligent clothes cabinet overvoltage is adjustable cut off circuit
CN106300645A (en) * 2016-09-27 2017-01-04 北海益生源农贸有限责任公司 A kind of power supply management system based on intelligent communication technology
CN106329481A (en) * 2016-09-30 2017-01-11 成都烨辰新材料科技有限公司 Overvoltage control circuit for intelligent wardrobe
CN106532630A (en) * 2016-12-27 2017-03-22 郑州诚合信息技术有限公司 Voltage protection circuit of computer display

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106300645A (en) * 2016-09-27 2017-01-04 北海益生源农贸有限责任公司 A kind of power supply management system based on intelligent communication technology
CN106253233A (en) * 2016-09-30 2016-12-21 成都烨辰新材料科技有限公司 Intelligent clothes cabinet overvoltage regulating circuit
CN106300245A (en) * 2016-09-30 2017-01-04 成都烨辰新材料科技有限公司 Intelligent clothes cabinet overvoltage is adjustable cut off circuit
CN106329481A (en) * 2016-09-30 2017-01-11 成都烨辰新材料科技有限公司 Overvoltage control circuit for intelligent wardrobe
CN106532630A (en) * 2016-12-27 2017-03-22 郑州诚合信息技术有限公司 Voltage protection circuit of computer display

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