CN207652675U - A kind of audio signal boost control circuit - Google Patents
A kind of audio signal boost control circuit Download PDFInfo
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- CN207652675U CN207652675U CN201721272797.6U CN201721272797U CN207652675U CN 207652675 U CN207652675 U CN 207652675U CN 201721272797 U CN201721272797 U CN 201721272797U CN 207652675 U CN207652675 U CN 207652675U
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Abstract
The utility model embodiment discloses a kind of audio signal boost control circuit, is related to Yin Frequency equipment technical fields.A kind of audio signal boost control circuit, including：Signal amplification unit, rectification unit, the first level comparing unit, second electrical level comparing unit, the first delays time to control unit, the second delays time to control unit, the first boost feedback control unit, the second boost feedback control unit, boosting unit and audio frequency power amplifier；The first level comparing unit and the second electrical level comparing unit are respectively connected to the rectification unit；The output end of the first boost feedback control unit and the output end of the second boost feedback control unit are respectively connected to the boosting unit, and the boosting unit accesses power supply.Audio signal boost control circuit audio signal boost control circuit described in the utility model embodiment reduces the power consumption of audio frequency apparatus on the basis of not cutting down system performance.
Description
Technical field
The utility model embodiment is related to Yin Frequency equipment technical fields more particularly to a kind of audio signal boosting rectifier control electricity
Road.
Background technology
It is no exception for the energy-saving design of electronic product under the energy-saving and environment-friendly policy of every profession and trade all active responses, drop
The electricity of low product uses power consumption, meanwhile, ensure the usage experience of user.The size of electronic product power consumption not only limits portable
Device battery usage time, also affects equipment performance to a certain extent.
Inventor has found that at least there are the following problems in the prior art during studying the application：As audio is produced
The continuous evolution of product, as high-power speaker constantly enters market, reducing Overall Power Consumption becomes important project.Existing battery
Electricity be all limited, and in order to the aesthetic appearance of audio product generally use smaller speaker, this is allowed in audio
In the manufacturing process of product can not the unconfined electricity for increasing battery, the working time for resulting in audio frequency apparatus do not grow, and reduces
The power consumption of audio frequency apparatus can be only achieved ideal using effect.Therefore the purpose of this programme is to meet.Therefore, how not cut
On the basis of subtracting system performance, the power consumption of audio frequency apparatus is reduced, urgent problem to be solved is become.
Utility model content
The embodiments of the present invention are reduced the technical problem to be solved is that, on the basis of not cutting down system performance
The power consumption of audio frequency apparatus.
In order to solve the above-mentioned technical problem, the utility model embodiment uses technical solution below：
A kind of audio signal boost control circuit, including：Signal amplification unit, rectification unit, the first level comparing unit,
Second electrical level comparing unit, the first delays time to control unit, the second delays time to control unit, the first boost feedback control unit, second
Boost feedback control unit, boosting unit and audio frequency power amplifier；
The signal amplification unit and rectification unit series connection, the first level comparing unit and the second electrical level
Comparing unit is respectively connected to the rectification unit；The first level comparing unit, the first delays time to control unit and described
First boost feedback control unit is sequentially connected in series；The second electrical level comparing unit, the second delays time to control unit and described
Second boost feedback control unit is sequentially connected in series；
The output end of the first boost feedback control unit and the output end of the second boost feedback control unit point
The boosting unit is not accessed, and the boosting unit accesses power supply；
The audio frequency power amplifier is connected with the boosting unit, and the audio frequency power amplifier accesses the audio signal.
In some embodiments of the utility model, the first level comparing unit and the second electrical level comparing unit
Circuit structure it is identical；The first delays time to control unit is identical with the circuit structure of the second delays time to control unit；It is described
First boost feedback control unit is identical with the circuit structure of the second boost feedback control unit.
In some embodiments of the utility model, the first level comparing unit includes：Resistance R1, resistance R2, electricity
Hinder R3, resistance R4, capacitance C1 and triode Q1；Wherein, level signal is accessed by the resistance R1；The resistance R1 and the electricity
The collector for hindering R2 series connection access triodes Q1, also accesses the capacitance C1 between the resistance R1 and the resistance R2, described
The one end capacitance C1 is grounded；Connected the resistance R3 and resistance R4 on the emitter of the triode Q1, the resistance R4
One end is grounded, and power output end is equipped between the resistance R3 and the resistance R4；The base stage output electricity of the triode Q1
Ordinary mail number.
In some embodiments of the utility model, the first discharge lag control unit and first boost feedback
Control unit, including：Resistance R5, resistance R6, resistance R7, diode D1, capacitance C2 and triode Q2；Wherein, the diode
The anode access level signal of D1, the cathode of the diode D1 is connected with the resistance R5 and the resistance R6 accesses described three
The grid G of pole pipe Q2；The capacitance C2 is accessed between the resistance R5 and resistance R6, and the one end the capacitance C2 is grounded；
The drain D of the triode Q2 is grounded；Connect the resistance R7 in the source S of the triode Q2.
Compared with prior art, the utility model embodiment has the advantages that：
Audio signal boost control circuit described in the utility model embodiment, including：Signal amplification unit, rectification list
Member, the first level comparing unit, second electrical level comparing unit, the first delays time to control unit, the second delays time to control unit, first liter
Press feedback control unit, the second boost feedback control unit, boosting unit and audio frequency power amplifier.Pass through signal amplification unit and rectification
Unit is amplified audio signal and rectification is DC level signal.Pass through the first level comparing unit, second electrical level ratio again
Compared with unit, the first delays time to control unit, the second delays time to control unit, the first boost feedback control unit and the second boost feedback control
Unit processed is compared and feeds back to DC level signal, carries out the adjusting of the output voltage of the boosting unit, reaches not
Same time exports preset voltage value and works, and reduces the consumption of power supply, is effectively accomplished the purpose for saving electrical source consumption,
Limited battery capacity is rationally adjusted.In conclusion the audio signal boosting rectifier control described in the utility model embodiment
Circuit reduces the power consumption of audio frequency apparatus on the basis of not cutting down system performance, improves the usage experience of user.
Description of the drawings
It, below will be to required in each embodiment in order to illustrate more clearly of the technical solution of the embodiments of the present invention
The attached drawing used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the utility model
Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the composite structural diagram of the audio signal boost control circuit in the utility model embodiment；
Fig. 2 is the structure chart of the first level comparing unit in the utility model embodiment；
Fig. 3 is the first discharge lag control unit and the first boost feedback control unit in the utility model embodiment
Structure chart.
Reference sign：11- signal amplification units, 12- rectification units, the first level of 21- comparing unit, 22- second
Level comparing unit, the first delays time to control of 31- unit, the second delays time to control of 32- unit, the first boost feedbacks of 41- control unit,
The second boost feedbacks of 42- control unit, 50- boosting units, 60- audio frequency power amplifiers.
Specific implementation mode
The utility model is more fully retouched below with reference to relevant drawings for the ease of understanding the utility model,
It states.The preferred embodiment of the utility model is given in attached drawing.But the utility model can in many different forms come in fact
It is existing, however it is not limited to embodiment described herein.Opposite, purpose of providing these embodiments is makes public affairs to the utility model
The understanding for opening content is more thorough and comprehensive.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with the technology for belonging to the utility model
The normally understood meaning of technical staff in domain is identical.Term used herein is intended merely to the mesh of description specific embodiment
, it is not intended that in limitation the utility model.
It is the composite structural diagram of the audio signal boost control circuit in the utility model embodiment with reference to figure 1.This practicality
Audio signal boost control circuit described in new embodiment, including：Signal amplification unit 11, rectification unit 12, the first level
Comparing unit 21, second electrical level comparing unit 22, the first delays time to control unit 31, the boosting of the second delays time to control unit 32, first
Feedback control unit 41, the second boost feedback control unit 42, boosting unit 50 and audio frequency power amplifier 60.
The signal amplification unit 11 and the rectification unit 12 are connected, the first level comparing unit 21 and described the
Two level comparing units 22 are respectively connected to the rectification unit 12.The first level comparing unit 21, the first delay control
Unit 31 processed and the first boost feedback control unit 41 are sequentially connected in series.The second electrical level comparing unit 22, described second
Delays time to control unit 32 and the second boost feedback control unit 42 are sequentially connected in series.
The output of the output end of the first boost feedback control unit 41 and the second boost feedback control unit 42
End is respectively connected to the boosting unit 50, and the boosting unit 50 accesses power supply.The audio frequency power amplifier 60 and the boosting unit
50 are connected, and the audio frequency power amplifier 60 accesses the audio signal.
Wherein, the signal amplification unit 11 is for being amplified audio signal.After the rectification unit 12 is to amplification
Audio model carry out rectification be converted into a DC level signal.The first level comparing unit 21 and the second electrical level
Comparing unit 22 is for more single to the DC level signal and the 21 or described second electrical level of the first level comparing unit
The reference level of member 22 is compared.The first delays time to control unit 31 and the second delays time to control unit 32 are used for basis
Preset time adjusts the level of 41 or described second boost feedback control unit 42 of the first boost feedback control unit output
Signal.The first boost feedback control unit, 41 or described second boost feedback control unit 42 is for sending FB level letter
Number, change the FB foot level of boosting unit 50.The boosting unit 50 is for receiving the first boost feedback control unit 41
Or the FB level signals of the second boost feedback control unit 42, carry out cutting for the grade 1 of power supply, grade 2 or grade 3
It changes.The audio frequency power amplifier 60 is used to carry out signal amplification to audio signal.
In the embodiments of the present invention, the preferred embodiment of the utility model is directed to the width of the audio signal of three grades
Degree is adjusted.Three grades includes：Grade 1, grade 2 and grade 3, voltage output intensity are incremented by according to grade.
In the utility model embodiment, the first level comparing unit 21 and the second electrical level comparing unit 22
Circuit structure is identical.
In the utility model embodiment, the first delays time to control unit 31 and the second delays time to control unit 32
Circuit structure is identical.
In the utility model embodiment, the first boost feedback control unit 41 and second boost feedback control
The circuit structure of unit 42 is identical.
Audio signal boost control circuit described in the embodiments of the present invention, mainly there is following technique effect：
Audio signal boost control circuit described in the embodiments of the present invention, including：Signal amplification unit, rectification list
Member, the first level comparing unit, second electrical level comparing unit, the first delays time to control unit, the second delays time to control unit, first liter
Press feedback control unit, the second boost feedback control unit, boosting unit and audio frequency power amplifier.Pass through signal amplification unit and rectification
Unit is amplified audio signal and rectification is DC level signal.Pass through the first level comparing unit, second electrical level ratio again
Compared with unit, the first delays time to control unit, the second delays time to control unit, the first boost feedback control unit and the second boost feedback control
Unit processed is compared and feeds back to DC level signal, carries out the adjusting of the output voltage of the boosting unit, reaches not
Same time exports preset voltage value and works, and reduces the consumption of power supply, is effectively accomplished the purpose for saving electrical source consumption,
Limited battery capacity is rationally adjusted.In conclusion the audio signal boosting rectifier control described in the utility model embodiment
Circuit audio signal boost control circuit reduces the power consumption of audio frequency apparatus, improves use on the basis of not cutting down system performance
The usage experience at family.
In conjunction with Fig. 1, the operation principle of the audio signal boost control circuit in the utility model embodiment, as described below：
The first step：When the pickup of signal amplification unit 11 is to audio signal, audio signal is carried out by signal amplification unit 11
Signal enhanced processing, amplified audio signal by rectification unit 12 carry out rectification be converted into a DC level signal, and
DC level signal is output to the first level comparing unit 21 and second electrical level comparing unit 22, the first level comparing unit 21
With second electrical level comparing unit 22 according to the reference level of its own, DC level signal and the reference level are compared
Compared with.
Second step：When input direct-current level signal is less than the first level comparing unit 21 and second electrical level comparing unit simultaneously
When 22 reference level, then the first level comparing unit 21 and second electrical level comparing unit 22 export low level signal.
When reference level of the input direct-current level signal more than the first level comparing unit 21, and compare less than second electrical level
When the reference level of unit 22, the first level comparing unit 21 exports high level signal, and second electrical level comparing unit 22 exports low
Level signal.
When reference level of the input direct-current level signal more than second electrical level comparing unit 22, and compare less than the first level
When the reference level of unit 21, second electrical level comparing unit 22 exports high level signal, and the first level comparing unit 21 exports low
Level signal.
When input direct-current level signal is simultaneously greater than the base of the first level comparing unit 21 and second electrical level comparing unit 22
When quasi- level, the first level comparing unit 21 and second electrical level comparing unit 22 all export high level signal.
Third walks：The high level signal or low level that first level comparing unit 21 or second electrical level comparing unit 22 export
When signal passes through the first delays time to control unit 31 or the second delays time to control unit 32：
It charges to the first delays time to control unit 31 when the first level comparing unit 21 exports high level signal, while first liter
It presses feedback control unit 41 to receive high level signal, starts the first boost feedback control unit 41 and change the boosting unit 50
Output voltage is switched to grade 2 by FB foot level by initial grade 1.
When the first level comparing unit 21 exports low level signal, it is delayed using the first delays time to control unit 31 and second
Control unit 32 persistently boosts instead to the first boost feedback control unit 41 or second with characteristic fast, that electric discharge is slow is powered on
Feedback control unit 42 is controlled, and the level that the boosting unit 50 exports is made to be maintained at grade 2.When the first delays time to control unit
When the duration of 31 input low level signals exceeds delay adjustments value, the first delays time to control unit 31 terminates anti-to the first boosting
The control of control unit 41 is presented, while the first boost feedback control unit 41 changes the state of the FB feet of the boosting unit 50,
50 output level of the boosting unit becomes grade 1 from grade 2.
The charging of the second delays time to control unit 32, while described the are given when second electrical level comparing unit 22 exports high level signal
Two boost feedback control units 42 receive the high level signal, and the second boost feedback control unit 42 changes the boosting unit
50 FB foot level, to which output voltage is switched to grade 3 by initial grade 2.
When second electrical level comparing unit 22 exports low level signal, has using the second delays time to control unit 32 and power on
Soon, slow characteristic of discharging persistently controls the second boost feedback control unit 42, the electricity for allowing the boosting unit 50 to export
The flat state for being maintained at grade 3.Exceed in advance when the duration of the low level signal of the second delays time to control unit 32 input
When setting value, the second delays time to control unit 32 terminates to the second boost feedback control unit 42, the second boost feedback control unit
42 change simultaneously the state of the FB feet of the boosting unit 50, and 50 output level of boosting unit becomes grade 2 from grade 3.
In conclusion according to the audio signal of input, change the input voltage of audio-frequency power amplifier, improves audio power
The service efficiency of big device, to realize the purpose for the power consumption for reducing power amplifier.
With reference to figure 1 and Fig. 2.In the utility model embodiment, the first level comparing unit 21 includes：Resistance R1, electricity
Hinder R2, resistance R3, resistance R4, capacitance C1 and triode Q1.
Wherein, level signal is accessed by the resistance R1.The resistance R1 and resistance R2 series connection access triodes Q1
Collector, also access the capacitance C1 between the resistance R1 and the resistance R2, the one end capacitance C1 ground connection.Described three
Connected the resistance R3 and resistance R4 on the emitter of pole pipe Q1, the one end resistance R4 ground connection, and the resistance R3
Power output end is equipped between the resistance R4；The base stage outputs level signals of the triode Q1.
With reference to figure 1 and Fig. 3.In the utility model embodiment, the first discharge lag control unit 31 and described first
Boost feedback control unit 41, including：Resistance R5, resistance R6, resistance R7, diode D1, capacitance C2 and triode Q2.
Wherein, the anode access level signal of the diode D1, the cathode of the diode D1 and the resistance R5 and
The resistance R6 series connection accesses the grid G of the triode Q2.The capacitance C2 access the resistance R5 and resistance R6 it
Between, and the one end the capacitance C2 is grounded.The drain D of the triode Q2 is grounded.In the source S of the triode Q2 described in series connection
Resistance R7.
Audio signal boost control circuit described in the embodiments of the present invention, mainly there is following technique effect：
Audio signal boost control circuit described in the embodiments of the present invention, including：Signal amplification unit, rectification list
Member, the first level comparing unit, second electrical level comparing unit, the first delays time to control unit, the second delays time to control unit, first liter
Press feedback control unit, the second boost feedback control unit, boosting unit and audio frequency power amplifier.Pass through signal amplification unit and rectification
Unit is amplified audio signal and rectification is DC level signal.Pass through the first level comparing unit, second electrical level ratio again
Compared with unit, the first delays time to control unit, the second delays time to control unit, the first boost feedback control unit and the second boost feedback control
Unit processed is compared and feeds back to DC level signal, carries out the adjusting of the output voltage of the boosting unit, reaches not
Same time exports preset voltage value and works, and reduces the consumption of power supply, is effectively accomplished the purpose for saving electrical source consumption,
Limited battery capacity is rationally adjusted.In conclusion the audio signal boosting rectifier control described in the utility model embodiment
Circuit audio signal boost control circuit reduces the power consumption of audio frequency apparatus, improves use on the basis of not cutting down system performance
The usage experience at family.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiment of the utility model is not by above-mentioned
The limitation of embodiment, under other any Spirit Essences and principle without departing from the utility model made by change, modify, replace
In generation, simplifies combination, should be equivalent substitute mode, is included within the scope of protection of the utility model.
Claims (4)
1. a kind of audio signal boost control circuit, which is characterized in that including：Signal amplification unit, rectification unit, the first level
Comparing unit, second electrical level comparing unit, the first delays time to control unit, the second delays time to control unit, the control of the first boost feedback
Unit, the second boost feedback control unit, boosting unit and audio frequency power amplifier；
The signal amplification unit and rectification unit series connection, the first level comparing unit and the second electrical level compare
Unit is respectively connected to the rectification unit；The first level comparing unit, the first delays time to control unit and described first
Boost feedback control unit is sequentially connected in series；The second electrical level comparing unit, the second delays time to control unit and described second
Boost feedback control unit is sequentially connected in series；
The output end of the first boost feedback control unit and the output end of the second boost feedback control unit connect respectively
Enter the boosting unit, the boosting unit accesses power supply；
The audio frequency power amplifier is connected with the boosting unit, and the audio frequency power amplifier accesses the audio signal.
2. audio signal boost control circuit according to claim 1, which is characterized in that the first level comparing unit
It is identical with the circuit structure of second electrical level comparing unit；
The first delays time to control unit is identical with the circuit structure of the second delays time to control unit；
The first boost feedback control unit is identical with the circuit structure of the second boost feedback control unit.
3. audio signal boost control circuit according to claim 2, which is characterized in that the first level comparing unit
Including：Resistance R1, resistance R2, resistance R3, resistance R4, capacitance C1 and triode Q1；
Wherein, level signal is accessed by the resistance R1；The collection of the resistance R1 and resistance R2 series connection access triodes Q1
Electrode also accesses the capacitance C1, the one end capacitance C1 ground connection between the resistance R1 and the resistance R2；The triode
Connected the resistance R3 and resistance R4 on the emitter of Q1, the one end resistance R4 ground connection, and the resistance R3 and institute
It states and is equipped with power output end between resistance R4；The base stage outputs level signals of the triode Q1.
4. audio signal boost control circuit according to claim 2, which is characterized in that the first delays time to control unit
With the first boost feedback control unit, including：Resistance R5, resistance R6, resistance R7, diode D1, capacitance C2 and triode
Q2；
Wherein, the anode access level signal of the diode D1, the cathode of the diode D1 and the resistance R5 and described
Resistance R6 series connection accesses the grid G of the triode Q2；The capacitance C2 is accessed between the resistance R5 and resistance R6, and
The one end the capacitance C2 is grounded；The drain D of the triode Q2 is grounded；It connects in the source S of the triode Q2 resistance
R7。
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721272797.6U CN207652675U (en) | 2017-09-29 | 2017-09-29 | A kind of audio signal boost control circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721272797.6U CN207652675U (en) | 2017-09-29 | 2017-09-29 | A kind of audio signal boost control circuit |
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| CN207652675U true CN207652675U (en) | 2018-07-24 |
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ID=62882907
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108810753A (en) * | 2018-09-14 | 2018-11-13 | 厦门傅里叶电子有限公司 | A kind of adaptive Boost circuit device suitable for digital audio chip |
-
2017
- 2017-09-29 CN CN201721272797.6U patent/CN207652675U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108810753A (en) * | 2018-09-14 | 2018-11-13 | 厦门傅里叶电子有限公司 | A kind of adaptive Boost circuit device suitable for digital audio chip |
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