CN204256137U - Electric quantity detecting circuit - Google Patents

Electric quantity detecting circuit Download PDF

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Publication number
CN204256137U
CN204256137U CN201420695133.0U CN201420695133U CN204256137U CN 204256137 U CN204256137 U CN 204256137U CN 201420695133 U CN201420695133 U CN 201420695133U CN 204256137 U CN204256137 U CN 204256137U
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CN
China
Prior art keywords
comparer
spdt
diode
resistance
throw switch
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Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
CN201420695133.0U
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Chinese (zh)
Inventor
杨勇
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.)
CHENGDU QIANZJ TECHNOLOGY Co Ltd
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CHENGDU QIANZJ TECHNOLOGY Co Ltd
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Priority to CN201420695133.0U priority Critical patent/CN204256137U/en
Application granted granted Critical
Publication of CN204256137U publication Critical patent/CN204256137U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses electric quantity detecting circuit, comprise socket, comparer A1, A, diode D1, light emitting diode D3, fuse B, single-pole double-throw switch (SPDT) S, fuse B, resistance R1, R2, R3, electric capacity C2 and charging capacitor C3, described socket, diode D1, fuse B, the a end of single-pole double-throw switch (SPDT) S, b holds, resistance R3 is connected successively with light emitting diode D3, described socket is contact resistance R1 also, resistance R1 also connects the input end in the same way of comparer A1, the reverse input end of comparer A1 connects the negative pole of diode D1, the output terminal output signal of comparer A1, described resistance R1 and the common port of diode D1 are also connected the reverse input end of comparer A and the c end of single-pole double-throw switch (SPDT) S successively, the common port that described resistance R3 and the b of single-pole double-throw switch (SPDT) S hold also is connected drop-down electric capacity C2 and drop-down charging capacitor C3.The utility model, by above-mentioned principle, can detect the power of power supply electricity quickly and easily, simple and easy to use.

Description

Electric quantity detecting circuit
Technical field
The utility model relates to testing circuit field, is specifically related to electric quantity detecting circuit.
Background technology
Current cyberage, with the quickening pace of modern life, so the rhythm of our carry-on electric equipment also needs us to grasp at any time, use portable type electronic product, wish the remaining electricity can knowing battery at any time, the working time that can continue, and regulate related application accordingly, this will be a thing very easily undoubtedly.Battery electric quantity detection technique is of common occurrence in notebook computer, and most notebook computer has the option of power management, provides different power mode and battery alarm function.But in the portable product market of miniaturization more, this technology is but also rare.Nowadays the device for detecting electricity is too complicated, and troublesome poeration, is not easy to rapid examination.
Utility model content
The utility model overcomes the deficiencies in the prior art, provides electric quantity detecting circuit, can detect the power of power supply electricity quickly and easily, simple and easy to use.
For solving above-mentioned technical matters, the utility model is by the following technical solutions: electric quantity detecting circuit, comprise socket, comparer A1, comparer A, diode D1, light emitting diode D3, fuse B, single-pole double-throw switch (SPDT) S, fuse B, resistance R1, resistance R2, resistance R3, electric capacity C2 and charging capacitor C3, described socket, diode D1, fuse B, the a end of single-pole double-throw switch (SPDT) S, the b end of single-pole double-throw switch (SPDT) S, resistance R3 is connected successively with light emitting diode D3, described socket is contact resistance R1 also, resistance R1 also connects the input end in the same way of comparer A1, the reverse input end of comparer A1 connects the negative pole of diode D1, the output terminal output signal of comparer A1, described resistance R1 and the common port of diode D1 are also connected the reverse input end of comparer A and the c end of single-pole double-throw switch (SPDT) S successively, the common port that described resistance R3 and the b of single-pole double-throw switch (SPDT) S hold also is connected drop-down electric capacity C2 and drop-down charging capacitor C3, the input end in the same way of described comparer A and the equal ground connection of light emitting diode D3, the output terminal of comparer A is held with the c of single-pole double-throw switch (SPDT) S and is connected.After socket inserting power supply circuit energising, the voltage in the same way between input end and reverse input end of comparer A1 reduce on the occasion of, export high level at the output terminal of comparer A1.Simultaneously due to socket inserting power supply, the a end of diode D1, fuse B, single-pole double-throw switch (SPDT) and b end, the loop that resistance R3 and light emitting diode D3 forms is connected, and diode D3 is luminous, now drop-down charging capacitor C3 two ends charging, electric capacity C2 is then for the unwanted ripple of filtering.After charging capacitor C3 charging complete, charging capacitor C3 then can discharge, the pressure drop at diode D1 two ends is disappeared, thus make the output terminal of comparer A1 be low level, the a end of single-pole double-throw switch (SPDT) S and c termination are led to, load R3 and light emitting diode D3 powers by charging capacitor C3, the a end of single-pole double-throw switch (SPDT) is connected with c end simultaneously, comparer A and power supply are connected, the input terminal voltage in the same way of comparer A1 is raised, the reverse input end voltage of comparer A1 reduces, thus make the output terminal of comparer A1 become high level again, the a end of single-pole double-throw switch (SPDT) and b termination are led to, the like circulate.When input voltage is excessive, fuse B also can disconnecting circuit, avoids light emitting diode below to damage.The power of power supply electricity can be detected by the bright-dark degree observing light emitting diode D3 luminescence, detect quick and convenient.
The a end of described single-pole double-throw switch (SPDT) S is also connected drop-down voltage stabilizing diode D2 with the common port of fuse B, the forward end ground connection of diode D2.Make circuit supply voltage more stable.
Described socket also connects drop-down electric capacity C1.For filtering out interference wave, avoid interference the impact of ripple on circuit.
The forward power end link of described comparer A also connects drop-down electric capacity C4.For the undesired signal of filtering near single-pole double-throw switch (SPDT).
Described electric capacity C1 is equal with electric capacity C2 capacitance.
Compared with prior art, the beneficial effects of the utility model are:
1, the utility model is by foregoing circuit by observing the power of lumination of light emitting diode, can detect the power of power supply electricity fast, thus take appropriate measures in advance, avoid power supply to occur loss of power situation totally.
2, the setting of fuse B, when input voltage is excessive, fuse B also can disconnecting circuit, avoids light emitting diode below to damage.
3, a end of single-pole double-throw switch (SPDT) S is also connected drop-down voltage stabilizing diode D2 with the common port of fuse B, the forward end ground connection of diode D2, makes circuit supply voltage more stable.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Be further elaborated the utility model below in conjunction with accompanying drawing, embodiment of the present utility model is not limited thereto.
Embodiment:
As shown in Figure 1, the utility model comprises socket, comparer A1, comparer A, diode D1, light emitting diode D3, fuse B, single-pole double-throw switch (SPDT) S, fuse B, resistance R1, resistance R2, resistance R3 is 4.7 kilo-ohms, electric capacity C2 is 0.1 microfarad and charging capacitor C3 is 220 microfarad/16 volt, described socket, diode D1, fuse B, the a end of single-pole double-throw switch (SPDT) S, the b end of single-pole double-throw switch (SPDT) S, resistance R3 is connected successively with light emitting diode D3, described socket is contact resistance R1 also, resistance R1 also connects the input end in the same way of comparer A1, the reverse input end of comparer A1 connects the negative pole of diode D1, the output terminal output signal of comparer A1, described resistance R1 and the common port of diode D1 are also connected the reverse input end of comparer A and the c end of single-pole double-throw switch (SPDT) S successively, the common port that described resistance R3 and the b of single-pole double-throw switch (SPDT) S hold also is connected drop-down electric capacity C2 and drop-down charging capacitor C3, the input end in the same way of described comparer A and the equal ground connection of light emitting diode D3, the output terminal of comparer A is held with the c of single-pole double-throw switch (SPDT) S and is connected.Wherein comparer model is MC74VHC1GT125DT, and the size of drop-down electric capacity C2 is 0.1 microfarad.
After socket inserting power supply circuit energising, the voltage in the same way between input end and reverse input end of comparer A1 reduce on the occasion of, export high level at the output terminal of comparer A1.Simultaneously due to socket inserting power supply, the a end of diode D1, fuse B, single-pole double-throw switch (SPDT) and b end, the loop that resistance R3 and light emitting diode D3 forms is connected, and diode D3 is luminous, now drop-down charging capacitor C3 two ends charging, electric capacity C2 is then for the unwanted ripple of filtering.After charging capacitor C3 charging complete, charging capacitor C3 then can discharge, the pressure drop at diode D1 two ends is disappeared, thus make the output terminal of comparer A1 be low level, the a end of single-pole double-throw switch (SPDT) S and c termination are led to, load R3 and light emitting diode D3 powers by charging capacitor C3, the a end of single-pole double-throw switch (SPDT) is connected with c end simultaneously, comparer A and power supply are connected, the input terminal voltage in the same way of comparer A1 is raised, the reverse input end voltage of comparer A1 reduces, thus make the output terminal of comparer A1 become high level again, the a end of single-pole double-throw switch (SPDT) and b termination are led to, the like circulate.When input voltage is excessive, fuse B also can disconnecting circuit, avoids light emitting diode below to damage.The power of power supply electricity can be detected by the bright-dark degree observing light emitting diode D3 luminescence, detect quick and convenient.
Embodiment 2:
The present embodiment is preferably as follows on the basis of embodiment 1: a end of described single-pole double-throw switch (SPDT) S is also connected drop-down voltage stabilizing diode D2 with the common port of fuse B, the forward end ground connection of diode D2.Make circuit supply voltage more stable.
Described socket also connects drop-down electric capacity C1.For filtering out interference wave, avoid interference the impact of ripple on circuit.
The forward power end link of described comparer A also connects drop-down electric capacity C4.
Described electric capacity C1 is equal with electric capacity C2 capacitance.
Just this utility model can be realized as mentioned above.

Claims (5)

1. electric quantity detecting circuit, it is characterized in that: comprise socket, comparer A1, comparer A, diode D1, light emitting diode D3, fuse B, single-pole double-throw switch (SPDT) S, fuse B, resistance R1, resistance R2, resistance R3, electric capacity C2 and charging capacitor C3, described socket, diode D1, fuse B, the a end of single-pole double-throw switch (SPDT) S, the b end of single-pole double-throw switch (SPDT) S, resistance R3 is connected successively with light emitting diode D3, described socket is contact resistance R1 also, resistance R1 also connects the input end in the same way of comparer A1, the reverse input end of comparer A1 connects the negative pole of diode D1, the output terminal output signal of comparer A1, described resistance R1 and the common port of diode D1 are also connected the reverse input end of comparer A and the c end of single-pole double-throw switch (SPDT) S successively, the common port that described resistance R3 and the b of single-pole double-throw switch (SPDT) S hold also is connected drop-down electric capacity C2 and drop-down charging capacitor C3, the input end in the same way of described comparer A and the equal ground connection of light emitting diode D3, the output terminal of comparer A is held with the c of single-pole double-throw switch (SPDT) S and is connected.
2. electric quantity detecting circuit according to claim 1, is characterized in that: a end of described single-pole double-throw switch (SPDT) S is also connected drop-down voltage stabilizing diode D2 with the common port of fuse B, the forward end ground connection of diode D2.
3. electric quantity detecting circuit according to claim 1, is characterized in that: described socket also connects drop-down electric capacity C1.
4. electric quantity detecting circuit according to claim 1, is characterized in that: the forward power end link of described comparer A also connects drop-down electric capacity C4.
5. electric quantity detecting circuit according to claim 3, is characterized in that: described electric capacity C1 is equal with electric capacity C2 capacitance.
CN201420695133.0U 2014-11-19 2014-11-19 Electric quantity detecting circuit Expired - Fee Related CN204256137U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420695133.0U CN204256137U (en) 2014-11-19 2014-11-19 Electric quantity detecting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420695133.0U CN204256137U (en) 2014-11-19 2014-11-19 Electric quantity detecting circuit

Publications (1)

Publication Number Publication Date
CN204256137U true CN204256137U (en) 2015-04-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420695133.0U Expired - Fee Related CN204256137U (en) 2014-11-19 2014-11-19 Electric quantity detecting circuit

Country Status (1)

Country Link
CN (1) CN204256137U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104459549A (en) * 2014-11-19 2015-03-25 成都嵌智捷科技有限公司 Circuit capable of conveniently detecting electric quantity
US11100752B2 (en) * 2019-01-24 2021-08-24 Ags Llc Service lighting continuation for gaming cabinets

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104459549A (en) * 2014-11-19 2015-03-25 成都嵌智捷科技有限公司 Circuit capable of conveniently detecting electric quantity
US11100752B2 (en) * 2019-01-24 2021-08-24 Ags Llc Service lighting continuation for gaming cabinets

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150408

Termination date: 20151119