CN206226059U - A kind of charging voltage indicating circuit - Google Patents
A kind of charging voltage indicating circuit Download PDFInfo
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- CN206226059U CN206226059U CN201621181820.6U CN201621181820U CN206226059U CN 206226059 U CN206226059 U CN 206226059U CN 201621181820 U CN201621181820 U CN 201621181820U CN 206226059 U CN206226059 U CN 206226059U
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- resistance
- triode
- emitting diode
- resistor
- indicating circuit
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Abstract
The utility model discloses a kind of charging voltage indicating circuit, including voltage-regulator diode, first resistor, second resistance, 3rd resistor, the first light emitting diode, triode, the 4th resistance, the 5th resistance and the second Light-Emitting Diode；The negative pole of zener diode is connected with power output end, and positive pole is connected with first resistor, the other end point two-way of first resistor, and second resistance is connected all the way, and the base stage of another road connecting triode, the other end of second resistance is connected with earth terminal；One end of 3rd resistor is connected with power output end, and the other end is connected with the positive pole of the first light emitting diode, and the negative pole of the first light emitting diode is connected with the colelctor electrode of triode, and the emitter stage of triode is connected with earth terminal；It is to be capable of achieving to allow user quickly to recognize that its mobile phone is belonging to fill soon or general fills when charging by using voltage-regulator diode, triode, resistance and light emitting diode, component low cost, and circuit structure is simple, advantageously reduces cost of goods manufactured and realize that product is minimized.
Description
Technical field
The utility model is related to charging technique field, more particularly to a kind of charging voltage indicating circuit.
Background technology
In recent years, the intelligent mobile terminal such as mobile phone quickly grows, and has basically reached the stage of staff one；Due to intelligent sliding
The development more intelligent, screen enlarging of direction of dynamic terminal, so being accomplished by CPU (the central processing of intelligent mobile terminal
Unit, central processing unit) processing speed faster, make its power consumption larger, and big its power consumption of screen is also big, therefore existing intelligent sliding
Dynamic terminal typically uses high capacity cell, and the endurance of intelligent mobile terminal is improved with this, but battery capacity is bigger, its
Charging interval is more long, makes the experience of user not good.
Therefore, how to realize that the quick charge of the intelligent mobile terminals such as mobile phone has become the emphasis research and development side of all big enterprises
To；At present, more ripe rapid nitriding includes QC (QuickCharge) standard that Qualcomm proposes, it can be supported
Fill soon and fill two kinds of charge modes (charging voltage when filling soon is 9V or 12V, even 20V, and general charging voltage when filling is with general
5V), occurring in that on the market at present much, there is the QC to fill the portable power source and onboard charger of technology soon；But user should in use
When portable power source or onboard charger charge to intelligent mobile terminals such as its mobile phones, the mobile terminals such as its mobile phone how are known
When portable power source or onboard charger is connected, be it is common charge or quick charge, this be accomplished by doing the instruction of correlation so as to
In knowing that user will be apparent that, existing mode is typically with two LED lamps and gives instruction, and the more commonly used method for designing is useful
MCU (single-chip microcomputer) controls, also useful comparator does what is controlled, but these resolution circuitries are all relatively complicated, and MCU and ratio
Component cost compared with device is also of a relatively high, is unfavorable for reducing cost of goods manufactured, along with present portable power source and vehicle-mounted
Charger product all pursues miniaturization, therefore causes difficulty to designer.
The content of the invention
In order to overcome shortcoming and defect present in prior art, the purpose of this utility model is to provide a kind of structure letter
Charging voltage indicating circuit that is single, being advantageously implemented product miniaturization and reduction cost of goods manufactured.
To achieve the above object, the utility model uses following technical scheme：
A kind of charging voltage indicating circuit, it is characterised in that including voltage-regulator diode, first resistor, second resistance, the 3rd
Resistance, the first light emitting diode, triode, the 4th resistance, the 5th resistance and the second Light-Emitting Diode；The zener diode
Negative pole is connected with power output end, and the positive pole of the zener diode is connected with the first resistor, the first resistor it is another
One end point two-way, is connected to the second resistance all the way, and another road connects the base stage of the triode, the second resistance it is another
One end is connected with earth terminal；One end of the 3rd resistor is connected with the power output end, and the other end is luminous with described first
The positive pole connection of diode, the negative pole of first light emitting diode is connected with the colelctor electrode of the triode, the triode
Emitter stage be connected with the earth terminal；One end of 4th resistance is connected with the power output end, the other end point two-way,
The colelctor electrode of the triode is connected to all the way, another road is connected with the 5th resistance, the other end of the 5th resistance connects
The positive pole of second light emitting diode is connected to, the negative pole of second Light-Emitting Diode is connected with the earth terminal.
Further, the voltage stabilizing value of the zener diode is more than or equal to 5.6V.
Further, the voltage of the power output end exportable 5V, 9V and 12V.
Further, the first Light-Emitting Diode blue light-emitting.
Further, the second Light-Emitting Diode green light.
Further, also including the 6th resistance, the 6th resistant series are in the power output end and the earth terminal
Between.
Further, the power output end is also connected to the power supply terminal of USB2.0 connectors, and the earth terminal also connects
It is connected to the ground terminal of the USB2.0 connectors.
Further, also including the 7th resistance, one end of the 7th resistance is connected with the earth terminal, the other end and institute
State the positive signal terminal connection of USB2.0 connectors.
Compared with prior art, the utility model has the advantages that：
The utility model charging voltage indicating circuit is by using voltage-regulator diode, triode, five resistance
And two light emitting diodes be capable of achieving to allow user quickly recognize its mobile phone be belonging to fill soon when charging or it is general fill, component
Low cost, and circuit structure is simple, advantageously reduces cost of goods manufactured and realizes that product is minimized.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model charging voltage indicating circuit.
Specific embodiment
For ease of being better understood from the purpose of this utility model, structure, feature and effect etc., in conjunction with accompanying drawing and specifically
The utility model is described in further detail for implementation method.
Fig. 1 is referred to, the utility model discloses a kind of charging voltage indicating circuit, can be used to recognize the intelligent slidings such as mobile phone
Dynamic terminal is belonging to fill soon or general fills when charging；The charging voltage indicating circuit includes voltage-regulator diode DZ1, the first electricity
Resistance R16, second resistance R17,3rd resistor R18, the first LED 1, triode Q1, the 4th resistance R19, the 5th electricity
Resistance R20 and the second Light-Emitting Diode LED2；The negative pole of the zener diode DZ1 is connected with power output end VOUT, described steady
The positive pole of pressure diode DZ1 is connected with the first resistor R16, the other end point two-way of the first resistor R16, connects all the way
To the second resistance R17, another road connects the base stage of the triode Q1, the other end and the ground connection of the second resistance R17
End GND connections；One end of the 3rd resistor R18 is connected with the power output end VOUT, and the other end is luminous with described first
The positive pole connection of diode (LED) 1, the negative pole of first LED 1 is connected with the colelctor electrode of the triode Q1,
The emitter stage of the triode Q1 is connected with the earth terminal GND；One end of the 4th resistance R19 and the power output end
VOUT is connected, the other end point two-way, and the colelctor electrode of the triode Q1, another road and the 5th resistance R20 are connected to all the way
Connection, the other end of the 5th resistance R20 is connected to the positive pole of second LED 2, described second luminous two
The negative pole of level pipe LED2 is connected with the earth terminal GND.
Specifically, the voltage stabilizing value of the zener diode DZ1 is more than or equal to 5.6V, and the power output end VOUT is exportable
The voltage of 5V, 9V and 12V, the first Light-Emitting Diode LED1 blue light-emittings, the second Light-Emitting Diode LED2 green lights.
Further, also including the 6th resistance R21, the 6th resistance R21 be connected on the power output end VOUT with
Between the earth terminal GND, used as fictitious load；The power output end VOUT is also connected to the power end of USB2.0 connectors
Son 4, the earth terminal GND is also connected to the ground terminal 1 of the USB2.0 connectors, also including the 7th resistance R22, described the
One end of seven resistance R22 is connected with the earth terminal GND, and the other end connects with the positive signal terminal 2 of the USB2.0 connectors
Connect.
The operation logic to the utility model charging voltage indicating circuit is described as follows below：
When by data wire be connected mobile phone with the USB2.0 connectors by user is charged, if described first is luminous
Diode (LED) 1 sends blue light, and second LED 2 goes out, then mobile phone is rapidly charged；If first hair
Optical diode LED1 goes out, and second LED 2 sends green glow, then mobile phone is commonly charged；It is specific because：
When the mobile phone is belonging to be rapidly charged, the voltage of the power output end VOUT outputs should be 9V or 12V, long-range
In the voltage stabilizing value 5.6V of the voltage-regulator diode DZ1, now the voltage-regulator diode DZ1 just can be switched on, described in voltage process
The first resistor R16 is flowed to after voltage-regulator diode DZ1, divides two-way out after by the first resistor R16, all the way
Flow to and be grounded after the second resistance R17, another road flows to the base stage of the triode Q1 so that the triode Q1 is turned on,
Simultaneously through power output end VOUT flow out voltage by the 3rd resistor R18 and the first Light-Emitting Diode LED1 after
Flow to the colelctor electrode of the triode Q1, then a closed-loop path is formed after grounded emitter by the triode Q1, therefore
First LED 1 can be shinny；Because the triode Q1 is switched on, and second light emitting diode
The front end of LED2 is connected with the 5th resistance R20, therefore voltage through first LED 1 or the 4th electricity
After resistance R19 comes, major part can flow to the colelctor electrode of the triode Q1, and only seldom part can flow to described second luminous two
Level pipe LED2, therefore when the mobile phone is when being rapidly charged, the second Light-Emitting Diode LED2 will not be shinny；When the hand
When machine is belonging to commonly be charged, the voltage of the power output end VOUT outputs should be 5V, be less than the pole of the voltage stabilizing two
The voltage stabilizing value 5.6V of pipe DZ1, now the voltage-regulator diode DZ1 be off, the base stage of the triode Q1 does not just have
Voltage, therefore the triode Q1 is also at open circuit, therefore first LED 1 can not be shinny, the power supply output
The voltage of end VOUT outputs is by flowing to the 5th resistance R20 after the 4th resistance R19, then flow to described second luminous two
The positive pole of pole pipe LED2, is grounded after most being flowed out through the negative pole of the LED 2 afterwards, forms closed-loop path, therefore described
Second LED 2 is shinny.
In sum, the utility model is by using a voltage-regulator diode, a triode, five resistance and two hairs
Optical diode be capable of achieving to allow user quickly recognize its mobile phone be when charging fill soon or it is general fill, component low cost, and electricity
Line structure is simple, advantageously reduces cost of goods manufactured and realizes that product is minimized.
Although embodiment of the present utility model is disclosed above described, but is not limited to the utility model, any ripe
Relevant art is practised, is not being departed from spirit and scope of the present utility model, such as according to described in present utility model application scope
Shape, construction, feature and spirit are worked as can do a little change, therefore scope of patent protection of the present utility model must be weighed regarding this patent
Sharp claim is defined and is defined.
Claims (8)
1. a kind of charging voltage indicating circuit, it is characterised in that including voltage-regulator diode, first resistor, second resistance, the 3rd electricity
Resistance, the first light emitting diode, triode, the 4th resistance, the 5th resistance and the second Light-Emitting Diode；The zener diode it is negative
Pole is connected with power output end, and the positive pole of the zener diode is connected with the first resistor, the first resistor it is another
An end point two-way, is connected to the second resistance all the way, and another road connects the base stage of the triode, the second resistance it is another
End is connected with earth terminal；One end of the 3rd resistor is connected with the power output end, the other end and described first luminous two
The positive pole connection of pole pipe, the negative pole of first light emitting diode is connected with the colelctor electrode of the triode, the triode
Emitter stage is connected with the earth terminal；One end of 4th resistance is connected with the power output end, the other end point two-way, one
Road is connected to the colelctor electrode of the triode, and another road is connected with the 5th resistance, the other end connection of the 5th resistance
To the positive pole of second light emitting diode, the negative pole of second Light-Emitting Diode is connected with the earth terminal.
2. charging voltage indicating circuit as claimed in claim 1, it is characterised in that：The voltage stabilizing value of the zener diode is more than
Equal to 5.6V.
3. charging voltage indicating circuit as claimed in claim 1, it is characterised in that：Described power output end exportable 5V, 9V
With the voltage of 12V.
4. charging voltage indicating circuit as claimed in claim 1, it is characterised in that：The first Light-Emitting Diode blue light-emitting.
5. charging voltage indicating circuit as claimed in claim 1, it is characterised in that：The second Light-Emitting Diode green light.
6. charging voltage indicating circuit as claimed in claim 1, it is characterised in that：Also include the 6th resistance, the 6th electricity
Resistance is connected between the power output end and the earth terminal.
7. charging voltage indicating circuit as claimed in claim 1, it is characterised in that：The power output end is also connected to
The power supply terminal of USB2.0 connectors, the earth terminal is also connected to the ground terminal of the USB2.0 connectors.
8. charging voltage indicating circuit as claimed in claim 7, it is characterised in that：Also include the 7th resistance, the 7th electricity
One end of resistance is connected with the earth terminal, and the other end is connected with the positive signal terminal of the USB2.0 connectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621181820.6U CN206226059U (en) | 2016-10-27 | 2016-10-27 | A kind of charging voltage indicating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621181820.6U CN206226059U (en) | 2016-10-27 | 2016-10-27 | A kind of charging voltage indicating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206226059U true CN206226059U (en) | 2017-06-06 |
Family
ID=58787900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621181820.6U Active CN206226059U (en) | 2016-10-27 | 2016-10-27 | A kind of charging voltage indicating circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206226059U (en) |
-
2016
- 2016-10-27 CN CN201621181820.6U patent/CN206226059U/en active Active
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