CN206650886U - Indicating lamp control circuit and electronic equipment - Google Patents
Indicating lamp control circuit and electronic equipment Download PDFInfo
- Publication number
- CN206650886U CN206650886U CN201720396092.9U CN201720396092U CN206650886U CN 206650886 U CN206650886 U CN 206650886U CN 201720396092 U CN201720396092 U CN 201720396092U CN 206650886 U CN206650886 U CN 206650886U
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- China
- Prior art keywords
- door
- comparator
- voltage signal
- control circuit
- partial pressure
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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.)
- Withdrawn - After Issue
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model embodiment is related to electronic technology field, discloses a kind of indicating lamp control circuit and electronic equipment.The indicating lamp control circuit of the utility model embodiment includes：Comparator, partial pressure unit, pulse modulation unit and first and door；The normal phase input end of comparator is used to connect external charging power supply by partial pressure unit, and the inverting input of comparator is used to connect rechargeable battery；The output end of comparator is connected to the first input end of first and door, and for exporting comparison signal according to battery voltage signal and the charging voltage signal after partial pressure；Pulse modulation unit is connected to the second input of first and door, and first is connected to indicator lamp with the output end of door；The utility model embodiment causes indicator lamp to realize flicker in the case where rechargeable battery is in low pressure charged state, so as to prompt the low pressure charged state of user's rechargeable battery, avoid user to perform power-on operation under low pressure charged state as far as possible, successfully start shooting and provided conveniently for user.
Description
Technical field
The utility model embodiment is related to electronic technology field, and more particularly to a kind of indicating lamp control circuit and electronics are set
It is standby.
Background technology
The electronic equipments such as mobile phone, tablet personal computer are widely used in daily life, and electronic equipment updates
Comparatively fast, somebody may possess multi-section electronic equipment；When electronic equipment for a long time when not in use, the rechargeable battery in equipment
Low-pressure state is likely to be at, can not be started shooting immediately when reusing, it is necessary to which user enters to the rechargeable battery in electronic equipment
Row charging.
Existing electronic equipment includes indicator lamp and rechargeable battery；During user charges to electronic equipment, when
When rechargeable battery is in low pressure charged state, indicator lamp can keep lighting lamp state to represent to charge；Work as rechargeable battery
When being converted to by low pressure charged state under non-low pressure charged state, indicator lamp also may proceed to keep lighting lamp state to represent to fill
Electricity.
However, it is found by the inventors that there are the following problems in the prior art：During being charged to existing electronic equipment,
When rechargeable battery is in low pressure charged state and non-low pressure charged state, indicator lamp all keeps a kind of state (such as to indicate
Lamp is constantly in lighting lamp state), user can not know that rechargeable battery is in low pressure charged state also according to the state of indicator lamp
It is non-low pressure charged state, when user needs to use electronic equipment, power-on operation may be performed under low pressure charged state
(cannot be started up under low-pressure state), but can not successfully start shooting, power-on operation may be performed a plurality of times in user, so that certain is operated
Rechargeable battery switchs to non-low-pressure state via low-pressure state during execution, so as to successfully start shooting；As can be seen that existing equipment is realized
The process of start is more troublesome.
Utility model content
The purpose of the utility model embodiment is to provide a kind of indicating lamp control circuit and electronic equipment so that indicator lamp
Flicker can be realized in the case where rechargeable battery is in low pressure charged state, so as to prompt the low pressure charged state of user's rechargeable battery,
Avoid user to perform power-on operation under low pressure charged state as far as possible, successfully start shooting and provided conveniently for user.
In order to solve the above technical problems, the utility model embodiment provides a kind of indicating lamp control circuit, applied to bag
Include the electronic equipment of rechargeable battery and indicator lamp；The indicating lamp control circuit includes：Comparator, partial pressure unit, pulse are adjusted
Unit processed and first and door；The normal phase input end of the comparator is used to connect external charging electricity by the partial pressure unit
Source, and for receiving the charging voltage signal after partial pressure；The inverting input of the comparator, which is used to connecting, described can fill
Battery, and for receiving battery voltage signal；The output end of the comparator is connected to described first the first input with door
End, and for exporting comparison signal according to the battery voltage signal and the charging voltage signal after partial pressure；It is described
Pulse modulation unit is connected to the second input of described first and door, and for output pulse signal to described first and door；
Described first is connected to the indicator lamp with the output end of door；When the battery voltage signal is less than the filling after partial pressure
During piezoelectric voltage signal, the comparison signal is the voltage signal of high level；Described first exports the pulse with the output end of door
Signal is to the indicator lamp.
The utility model embodiment additionally provides a kind of electronic equipment, including：Rechargeable battery, indicator lamp and above-mentioned
Indicating lamp control circuit；The rechargeable battery is connected to the inverting input of the comparator, and the indicator lamp is connected to institute
State the output end of first and door.
The utility model embodiment in terms of existing technologies, indicating lamp control circuit include comparator, partial pressure unit,
Pulse modulation unit and first and door；That is, in the indicating lamp control circuit that the utility model embodiment provides, comparator is used for
Comparison signal is exported according to the battery voltage signal of reception and the charging voltage signal after partial pressure, and in battery voltage signal
During less than charging voltage signal after partial pressure, the comparison signal of output for high level voltage signal (to characterize charging electricity
Pond is in low pressure charged state), so as to distinguish the state (battery voltage signal in practice described in rechargeable battery with comparison signal
During more than charging voltage signal after partial pressure, the comparison signal of output is low level voltage signal)；Pulse modulation unit
Output pulse signal to first and door, when first with door receive comparison signal and the comparison signal be high level voltage signal
When, it indicates that lamp receives pulse signal from first with door, so that indicator lamp is in low pressure charged state in rechargeable battery
Under can realize flicker, instead of in the prior art indicator lamp rechargeable battery be in low pressure charged state and non-low pressure charging shape
A kind of mode of state is all kept under state, so as to prompt the low pressure charged state of user's rechargeable battery, avoids user from existing as far as possible
Power-on operation is performed under low pressure charged state, while reduces the power-on operation of user, successfully starts shooting and is provided conveniently for user.
In addition, pulse modulation unit includes hysteresis loop comparator, electric capacity and resistance；The first end of the electric capacity is connected to institute
The normal phase input end of hysteresis loop comparator is stated, the second end of the electric capacity is connected to the inverting input of the hysteresis loop comparator；Institute
The first end for stating resistance is connected to the inverting input of hysteresis loop comparator, and the second end of the resistance is connected to the hysteresis and compared
The output end of device；The output end of the hysteresis loop comparator is connected to the second input of described first and door.In the present embodiment, carry
A kind of implementation of pulse modulation unit is supplied.
In addition, in the present embodiment, indicating lamp control circuit is also including NOT gate, second and door and processor；The NOT gate
Input be connected to the output end of the comparator, the output end of the NOT gate is connected to described second the first input with door
End, described second is connected to the processor with the second input of door, and described second is connected to the finger with the output end of door
Show lamp；The processor is used to input control signal to described second and door, and the NOT gate is for defeated according to the comparison signal
Go out the anti-phase comparison signal；When the battery voltage signal is more than or equal to the charging voltage signal after partial pressure
When, the anti-phase comparison signal is the voltage signal of high level, and described second exports the control signal with the output end of door
To the indicator lamp.In the present embodiment, second is connected to processor NAND gate with two inputs of door so that battery electricity
Press when signal is more than or equal to charging voltage signal after partial pressure that (rechargeable battery switchs to non-low pressure by low pressure charged state
Charged state), indicator lamp can be worked accordingly according to the control signal of processor.
In addition, partial pressure unit includes the first divider resistance and the second divider resistance；The first end of first divider resistance
For connecting the external charging power supply, the first end of second divider resistance is grounded, and the second of first divider resistance
End and the second end of second divider resistance are connected to the normal phase input end of the comparator simultaneously.In the present embodiment, there is provided
A kind of implementation of partial pressure unit.
In addition, indicator lamp is light emitting diode.In the present embodiment, there is provided a type of indicator lamp.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are
Some embodiments of the utility model, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram according to the indicating lamp control circuit of first embodiment；
Fig. 2 is the schematic diagram according to the indicating lamp control circuit of the 3rd embodiment；
Fig. 3 is the schematic diagram according to the indicating lamp control circuit of the 4th embodiment.
Embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Each embodiment of type is explained in detail.It is however, it will be understood by those skilled in the art that each in the utility model
In embodiment, in order that reader more fully understands the application and proposes many ins and outs.But even if without these skills
Art details and many variations based on following embodiment and modification, the application technical side claimed can also be realized
Case.
First embodiment of the present utility model is related to a kind of indicating lamp control circuit, applied to including rechargeable battery with
The electronic equipment of indicator lamp, such as mobile phone；As shown in figure 1, the indicating lamp control circuit of the utility model embodiment includes：Compare
Device 1, partial pressure unit 2, pulse modulation unit 3 and first and door 4.
In present embodiment, the normal phase input end of comparator 1 is used to connect external charging power supply (example by partial pressure unit 2
As partial pressure unit 2 passes through USB connector connection external charging power supply, right not limited to this), and for receiving filling after partial pressure
Piezoelectric voltage signal；The inverting input of comparator 1 is used to connect rechargeable battery, and for receiving battery voltage signal；Compare
The output end of device 1 is connected to the first input end of first and door 4, and for according to battery voltage signal and filling after partial pressure
Piezoelectric voltage signal output comparison signal.Pulse modulation unit 3 is connected to the second input of first and door 4, and for exporting arteries and veins
Signal is rushed to first and door 4；First is connected to indicator lamp 5 with the output end of door 4.
In present embodiment, when battery voltage signal is less than the charging voltage signal after partial pressure, that is, charging is represented
Battery is in low-pressure state, and the comparison signal that comparator 1 exports is the voltage signal of high level；First is defeated with the output end of door 4
Go out pulse signal to indicator lamp 5, so as to which indicator lamp 5 realizes flicker in the case where rechargeable battery is in low-pressure state according to pulse signal.
In practice, when battery voltage signal is more than or equal to the charging voltage signal after partial pressure, that is, charging is represented
Battery switchs to non-low-pressure state via mortgage state, and the comparison signal that comparator 1 exports is low level voltage signal；First
Low level voltage signal to indicator lamp 5, indicator lamp 5 is exported with the output end of door 4, and non-flickering state is switched to by flicker state.
In terms of existing technologies, indicating lamp control circuit includes comparator, partial pressure unit, impulse modulation to the present embodiment
Unit and first and door；That is, in the indicating lamp control circuit that the utility model embodiment provides, comparator is used for according to reception
Battery voltage signal with after partial pressure charging voltage signal output comparison signal, and battery voltage signal be less than pass through
During charging voltage signal after partial pressure, the comparison signal of output (is in low for the voltage signal of high level to characterize rechargeable battery
Press charged state), so as to comparison signal distinguish described in rechargeable battery state (in practice battery voltage signal be more than pass through
During charging voltage signal after partial pressure, the comparison signal of output is low level voltage signal)；Pulse modulation unit exports pulse
Signal to first and door, when first with door to receive comparison signal and the comparison signal be the voltage signal of high level when, then refer to
Show that lamp receives pulse signal from first with door, so that indicator lamp can be real in the case where rechargeable battery is in low pressure charged state
Now flash, instead of indicator lamp in the prior art and all protected in the case where rechargeable battery is in low pressure charged state and non-low pressure charged state
A kind of mode of state is held, so as to prompt the low pressure charged state of user's rechargeable battery, avoids user to be charged in low pressure as far as possible
Power-on operation is performed under state, successfully starts shooting and is provided conveniently for user.
Second embodiment of the present utility model is related to a kind of indicating lamp control circuit.Second embodiment with it is first real
Apply and refined on the basis of mode, main refinement part is：In the utility model second embodiment, the institute of reference picture 1
Show, the refinement to pulse modulation unit 3.
In present embodiment, pulse modulation unit 3 includes hysteresis loop comparator 31, electric capacity C1And resistance R1.Specifically,
Electric capacity C1First end be connected to the normal phase input end of hysteresis loop comparator 31, electric capacity C1The second end be connected to hysteresis loop comparator 31
Inverting input；Resistance R1First end be connected to the inverting input of hysteresis loop comparator 31, resistance R1The second end be connected to
The output end of hysteresis loop comparator 31；The output end of hysteresis loop comparator 31 is connected to the second input of first and door 4.
In fact, in the present embodiment, resistance R1With electric capacity C1RC circuits are formed, RC circuits are in pulse modulation unit 3 both conduct
Delay link, be used as feedback network again, realized by the charge and discharge of RC circuits pulse signal output state from turn
Change；And the dutycycle of pulse signal can pass through regulation resistance R1With electric capacity C1Numerical value change；Right the present embodiment is to resistance R1
With electric capacity C1Numerical value be not intended to be limited in any, can according to be actually needed set.
In the present embodiment, hysteresis loop comparator 31 includes first comparator 311, resistance R2To resistance R4And voltage-stabiliser tube DZ.Tool
For body, resistance R2First end be connected to electric capacity C1And it is grounded, resistance R2The second end simultaneously be connected to first comparator 311
Normal phase input end and resistance R3First end；Voltage-stabiliser tube DZFirst end ground connection, voltage-stabiliser tube DZThe second end be connected to resistance R3
The second end；Resistance R4First end be connected to the output end of first comparator 311, resistance R4The second end be connected to simultaneously it is steady
Pressure pipe DZThe second end, resistance R1The second end and first with the second input of door 4.
In the present embodiment, the voltage of the normal phase input end of first comparator 311 is (+/-) R2/(R2+R3)*Uz；Wherein, Uz
For voltage-stabiliser tube DZVoltage stabilizing value.Right the present embodiment is to R2、R3And UzNumerical value be not intended to be limited in any, can be according to being actually needed
It is specific to set.
In present embodiment, indicator lamp 5 can be light emitting diode；Right not limited to this in practice, can also be other classes
The indicator lamp of type.
For the present embodiment for first embodiment, pulse modulation unit includes hysteresis loop comparator, electric capacity and electricity
Resistance；That is, a kind of implementation of pulse modulation unit is present embodiments provided.
3rd embodiment of the present utility model is related to a kind of indicating lamp control circuit.3rd embodiment with it is first real
Apply and refined on the basis of mode, main refinement part is：In the embodiment of the utility model the 3rd, as shown in Fig. 2
Refinement to partial pressure unit 2.
In present embodiment, partial pressure unit 2 includes the first divider resistance R5With the second divider resistance R6.First divider resistance
R5First end be used for connect external charging power supply, the second divider resistance R6First end ground connection, the first divider resistance R5Second
End and the second divider resistance R6The second end be connected to the normal phase input end of comparator 1 simultaneously.
In the present embodiment, the magnitude of voltage of the charging voltage signal after partial pressure of the normal phase input end reception of comparator is
VBUS*R6/(R5+R6), wherein, VBUSFor the magnitude of voltage of external charging power supply.
In fact, the present embodiment can also be the improved plan on the basis of second embodiment.
For the present embodiment for first embodiment, partial pressure unit includes the first divider resistance and the second partial pressure electricity
Resistance, i.e. present embodiments provide a kind of implementation of partial pressure unit.
4th embodiment of the present utility model is related to a kind of indicating lamp control circuit.4th embodiment is implemented first
It is improved on the basis of mode, mainly thes improvement is that：In the embodiment of the utility model the 4th, as shown in figure 3, referring to
Show that lamp control circuit also includes NOT gate 6, second and door 7 and processor 8.
In present embodiment, the input of NOT gate 6 is connected to the output end of comparator 1, and the output end of NOT gate 6 is connected to
Two are connected to processor 8 with the first input end of door 7, second with the second input of door 7, and second is connected with the output end of door 7
In indicator lamp 5；Processor 8 is used to input control signal to second and door 7, and NOT gate 6 is used for anti-phase according to comparison signal output
Comparison signal.
In present embodiment, when battery voltage signal is more than or equal to the charging voltage signal after partial pressure, compare
The comparison signal that device 1 exports be low level voltage signal, anti-phase comparison signal for high level voltage signal, second and door
The control signal and the voltage signal of high level that the processor 8 that 7 input receives exports, second is defeated with the output end of door 7
Go out control signal to indicator lamp 5.First receives the low level voltage signal and arteries and veins of the output of comparator 1 with the input of door 4
The pulse signal that modulated unit 3 exports, first exports low level voltage signal to indicator lamp 5 with the output end of door 4；Most
Afterwards, indicator lamp 5 is worked accordingly according to the control signal received.
In the present embodiment, when indicating lamp control circuit is applied in the electronic device, processor 8 can be in electronic equipment
Processor；Right the present embodiment is not intended to be limited in any to this, and processor 8 can also be an independent integrated chip.
In fact, the present embodiment can also be the improved plan in second and the 3rd on the basis of embodiment.
For embodiment of the present utility model for first embodiment, indicating lamp control circuit also includes NOT gate, the
Two with door and processor；That is, in the indicating lamp control circuit that the present embodiment provides, second connects respectively with two inputs of door
It is connected to processor NAND gate so that battery voltage signal (charges when being more than or equal to the charging voltage signal after partial pressure
Battery switchs to non-low pressure charged state by low pressure charged state), indicator lamp can carry out corresponding according to the control signal of processor
Work.
The embodiment of the utility model the 5th is related to a kind of electronic equipment, and electronic equipment includes：Rechargeable battery, indicator lamp with
And the indicating lamp control circuit in first embodiment.
In present embodiment, rechargeable battery is connected to the inverting input of comparator, and indicator lamp is connected to first and door
Output end.
In terms of existing technologies, electronic equipment is included in the utility model embodiment embodiment of the present utility model
Indicating lamp control circuit so that for electronic equipment in charging, indicator lamp can be real in the case where rechargeable battery is in low pressure charged state
Now flash, so as to prompt the low pressure charged state of user's rechargeable battery, avoid user to be performed under low pressure charged state as far as possible
Power-on operation, successfully start shooting and provided conveniently for user.In addition, when the indicator lamp of electronic equipment is in the flicker shape of long period
During state (primitive decision is beyond the duration for switching to non-low pressure charged state by low pressure charged state), user can be according to indicator lamp
Flicker state determine the charging circuit of the electronic equipment in advance and can not charge normal, without carrying out filling for longer time
Electricity, so as to prompt user to take corresponding maintenance measures.
It will be understood by those skilled in the art that the respective embodiments described above are to realize specific implementation of the present utility model
Example, and in actual applications, can to it, various changes can be made in the form and details, without departing from spirit of the present utility model
And scope.
Claims (6)
- A kind of 1. indicating lamp control circuit, applied to the electronic equipment for including rechargeable battery and indicator lamp；Characterized in that, institute Stating indicating lamp control circuit includes：Comparator, partial pressure unit, pulse modulation unit and first and door；The normal phase input end of the comparator is used to connect external charging power supply by the partial pressure unit, and passes through for receiving Charging voltage signal after partial pressure；The inverting input of the comparator is used to connect the rechargeable battery, and for receiving Battery voltage signal；The output end of the comparator is connected to the first input end of described first and door, and for according to Battery voltage signal and the charging voltage signal output comparison signal after partial pressure；The pulse modulation unit is connected to the second input of described first and door, and for output pulse signal to described the One and door；Described first is connected to the indicator lamp with the output end of door；Wherein, when the battery voltage signal is less than the charging voltage signal after partial pressure, the comparison signal is The voltage signal of high level；Described first exports the pulse signal to the indicator lamp with the output end of door.
- 2. indicating lamp control circuit according to claim 1, it is characterised in that the pulse modulation unit includes hysteresis ratio Compared with device, electric capacity and resistance；The first end of the electric capacity is connected to the normal phase input end of the hysteresis loop comparator, and the second end of the electric capacity is connected to institute State the inverting input of hysteresis loop comparator；The first end of the resistance is connected to the inverting input of hysteresis loop comparator, and the second end of the resistance is connected to described stagnant Return the output end of comparator；The output end of the hysteresis loop comparator is connected to the second input of described first and door.
- 3. indicating lamp control circuit according to claim 1, it is characterised in that the indicating lamp control circuit also includes non- Door, second and door and processor；The input of the NOT gate is connected to the output end of the comparator, the output end of the NOT gate be connected to described second with The first input end of door, described second is connected to the processor with the second input of door, described second with the output end of door It is connected to the indicator lamp；The processor is used to input control signal to described second and door, and the NOT gate is used to be exported according to the comparison signal The anti-phase comparison signal；When the battery voltage signal is more than or equal to the charging voltage signal after partial pressure, the anti-phase comparison Signal is the voltage signal of high level, and described second exports the control signal to the indicator lamp with the output end of door.
- 4. indicating lamp control circuit according to claim 1, it is characterised in that the partial pressure unit includes the first partial pressure electricity Resistance and the second divider resistance；The first end of first divider resistance is used to connect the external charging power supply, the first end of second divider resistance Ground connection, the second end of first divider resistance and the second end of second divider resistance are connected to the comparator simultaneously Normal phase input end.
- 5. indicating lamp control circuit according to claim 1, it is characterised in that the indicator lamp is light emitting diode.
- 6. a kind of electronic equipment, it is characterised in that including：It is any one in rechargeable battery, indicator lamp and claim 1 to 5 Indicating lamp control circuit described in；The rechargeable battery is connected to the inverting input of the comparator, and the indicator lamp is connected to described first and door Output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720396092.9U CN206650886U (en) | 2017-04-14 | 2017-04-14 | Indicating lamp control circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720396092.9U CN206650886U (en) | 2017-04-14 | 2017-04-14 | Indicating lamp control circuit and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206650886U true CN206650886U (en) | 2017-11-17 |
Family
ID=60276693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720396092.9U Withdrawn - After Issue CN206650886U (en) | 2017-04-14 | 2017-04-14 | Indicating lamp control circuit and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206650886U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106937447A (en) * | 2017-04-14 | 2017-07-07 | 上海与德科技有限公司 | Indicating lamp control circuit and electronic equipment |
| CN112153784A (en) * | 2020-10-20 | 2020-12-29 | 维沃移动通信有限公司 | Control circuit and electronic device |
-
2017
- 2017-04-14 CN CN201720396092.9U patent/CN206650886U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106937447A (en) * | 2017-04-14 | 2017-07-07 | 上海与德科技有限公司 | Indicating lamp control circuit and electronic equipment |
| CN106937447B (en) * | 2017-04-14 | 2019-02-05 | 上海与德科技有限公司 | Indicating lamp control circuit and electronic equipment |
| CN112153784A (en) * | 2020-10-20 | 2020-12-29 | 维沃移动通信有限公司 | Control circuit and electronic device |
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