CN104459549A - Circuit capable of conveniently detecting electric quantity - Google Patents
Circuit capable of conveniently detecting electric quantity Download PDFInfo
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- CN104459549A CN104459549A CN201410661241.0A CN201410661241A CN104459549A CN 104459549 A CN104459549 A CN 104459549A CN 201410661241 A CN201410661241 A CN 201410661241A CN 104459549 A CN104459549 A CN 104459549A
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- comparer
- diode
- throw switch
- pole double
- spdt
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Abstract
The invention discloses a circuit capable of conveniently detecting electric quantity. The circuit comprises a socket, a comparator A1, a comparator A, a diode D1, a light-emitting diode D3, a fuse B, a single-pole double-throw switch S, a fuse B, a resistor R1, a resistor R2, a resistor R3, a capacitor C2 and a charging capacitor C3. The socket, the diode D1, the fuse B, the end a and the end b of the single-pole double-throw switch S, the resistor R3 and the light-emitting diode D3 are sequentially connected; the socket is further connected with the resistor R1 which is further connected with the same-direction input end of the comparators A1; the reverse input end of the comparators A1 is connected with the negative electrode of the diode D1, and the output end of the comparators A1 outputs a signal; the public end of the resistor R1 and the diode D1 is sequentially connected with the reverse input end of the comparators A and the end c of the single-pole double-throw switch S; the public end of the resistor R3 and the end b of the single-pole double-throw switch S are further connected with the drop-down capacitor C2 and the drop-down charging capacitor C3. On the basis of the principle, the strong and weak degree of the electric quantity of a power supply can be rapidly and conveniently detected, and use is convenient and simple.
Description
Technical field
The present invention relates to testing circuit field, be specifically related to the convenient circuit detecting electricity.
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.
Summary of the invention
Instant invention overcomes the deficiencies in the prior art, provide convenience and detect the circuit of electricity, the power of power supply electricity can be detected quickly and easily, simple and easy to use.
For solving above-mentioned technical matters, the present invention is by the following technical solutions: the convenient circuit detecting electricity, 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 invention has the beneficial effects as follows:
1, the present invention 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 invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further elaborated, and embodiments of the invention are not limited thereto.
Embodiment 1:
As shown in Figure 1, the present invention includes 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 invention can be realized as mentioned above.
Claims (5)
1. the convenient circuit detecting electricity, 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. the convenient circuit detecting electricity 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. the convenient circuit detecting electricity according to claim 1, is characterized in that: described socket also connects drop-down electric capacity C1.
4. the convenient circuit detecting electricity 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. the convenient circuit detecting electricity according to claim 3, is characterized in that: described electric capacity C1 is equal with electric capacity C2 capacitance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410661241.0A CN104459549A (en) | 2014-11-19 | 2014-11-19 | Circuit capable of conveniently detecting electric quantity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410661241.0A CN104459549A (en) | 2014-11-19 | 2014-11-19 | Circuit capable of conveniently detecting electric quantity |
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| Publication Number | Publication Date |
|---|---|
| CN104459549A true CN104459549A (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410661241.0A Pending CN104459549A (en) | 2014-11-19 | 2014-11-19 | Circuit capable of conveniently detecting electric quantity |
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| CN (1) | CN104459549A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107040224A (en) * | 2017-05-04 | 2017-08-11 | 广州慧智微电子有限公司 | One kind control circuit and method |
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| CN102288915A (en) * | 2010-06-17 | 2011-12-21 | 上海市奉贤中学 | Device for detecting electric quantity of dry cell |
| CN103245918A (en) * | 2012-02-02 | 2013-08-14 | 株式会社电装 | Electric power detection system |
| JP2013207876A (en) * | 2012-03-28 | 2013-10-07 | Hitachi Ltd | Battery system |
| CN103439662A (en) * | 2013-08-16 | 2013-12-11 | 崧顺电子（深圳）有限公司 | Low-cost battery electricity quantity detection circuit |
| CN203387214U (en) * | 2013-06-17 | 2014-01-08 | 安科智慧城市技术（中国）有限公司 | Automobile emergency starting power supply and automobile power supply device |
| CN204256137U (en) * | 2014-11-19 | 2015-04-08 | 成都嵌智捷科技有限公司 | Electric quantity detecting circuit |
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2014
- 2014-11-19 CN CN201410661241.0A patent/CN104459549A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288915A (en) * | 2010-06-17 | 2011-12-21 | 上海市奉贤中学 | Device for detecting electric quantity of dry cell |
| CN103245918A (en) * | 2012-02-02 | 2013-08-14 | 株式会社电装 | Electric power detection system |
| JP2013207876A (en) * | 2012-03-28 | 2013-10-07 | Hitachi Ltd | Battery system |
| CN203387214U (en) * | 2013-06-17 | 2014-01-08 | 安科智慧城市技术（中国）有限公司 | Automobile emergency starting power supply and automobile power supply device |
| CN103439662A (en) * | 2013-08-16 | 2013-12-11 | 崧顺电子（深圳）有限公司 | Low-cost battery electricity quantity detection circuit |
| CN204256137U (en) * | 2014-11-19 | 2015-04-08 | 成都嵌智捷科技有限公司 | Electric quantity detecting circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107040224A (en) * | 2017-05-04 | 2017-08-11 | 广州慧智微电子有限公司 | One kind control circuit and method |
| CN107040224B (en) * | 2017-05-04 | 2023-10-03 | 广州慧智微电子股份有限公司 | Control circuit and method |
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Application publication date: 20150325 |