CN207939722U - A kind of bar speaker - Google Patents
A kind of bar speaker Download PDFInfo
- Publication number
- CN207939722U CN207939722U CN201820476354.7U CN201820476354U CN207939722U CN 207939722 U CN207939722 U CN 207939722U CN 201820476354 U CN201820476354 U CN 201820476354U CN 207939722 U CN207939722 U CN 207939722U
- Authority
- CN
- China
- Prior art keywords
- power
- unit
- output end
- amplifier
- electricity accumulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a kind of bar speakers, including power incoming unit, power amplifier and operational amplifier, the output end connection adjustor of power incoming unit, the output end of adjuster is separately connected operational amplifier and allocation unit, the input terminal of operational amplifier connects audio signal source, its output end connects power amplifier, the output end of power amplifier connects loud speaker, the output end connection power amplifier and electricity accumulating unit of allocation unit, the output end of electricity accumulating unit connect allocation unit.The utility model overcomes bar-shaped acoustic device in the prior art and is limited by output power so that entire speaker can change the power of output automatically during normal use, reduce the distortion phenomenon during sound output.
Description
Technical field
The utility model is related to loudspeaker enclosures, more particularly to a kind of personal computer bar speaker.
Background technology
People play multi-channel sound with surround sound speaker system, such as film and music, in the case where space limits,
Other audio systems can be applied, such as speaker stick.In actual life, PC embedded loud speaker in Microspeaker column,
There is such strip-type loudspeaker small appearance and size and low-power to export, because it uses traditional power amplifier unit.Power amplification
The major function of device is the audio signal of amplification and converts audio signals into power drive loudspeaker drive.Speaker drive
Device is converted into power again, is the ear of the mankind with acoustic pressure.
The major parameter of power amplifier is output power, frequency response, distortion and signal-to-noise ratio（SNR）, therefore it is
It is vital, and it is main it is envisaged that output power in the design of power amplifier；And in existing speaker, distortion
It is fixed on the design phase with signal-to-noise ratio, therefore it is difficult to be changed after the completion of design.
Traditional bar speaker power supply be typically USB 5V electric currents be 500mA or USB 5V electric currents be thousand milliamperes.Such as
For the fruit Echo Wall just in 5V 500mA power power-supplies, output power is about 1WX2 (RMS)；If the Echo Wall is in thousand milliamperes of electricity of 5V
Source, output power are about 2Wx2 (RMS).Therefore, the output power of traditional desktop computer bar speaker it is not high be by
The limitation of input power.If output power further increases, level of distortion will be very high.
Invention content
In order to overcome the shortcomings of that existing technology, the utility model provide a kind of bar speaker.
Technical solutions of the utility model are as described below：
A kind of bar speaker, which is characterized in that including power incoming unit, power amplifier and operational amplifier, institute
The output end connection adjustor of power incoming unit is stated, the output end of the adjuster is separately connected the operational amplifier and divides
With unit, the input terminal of the operational amplifier connects audio signal source, and output end connects the power amplifier, the work(
The output end of rate amplifier connects loud speaker, and the output end of the allocation unit connects the power amplifier and electricity accumulating unit,
The output end of the electricity accumulating unit connects the allocation unit.
Further, the power incoming unit receives input power from power supply, and it is defeated that the adjuster adjusts the power
Entering the input power of unit reception, the operational amplifier amplifies the gain of the audio signal received from the audio signal source,
The power for the audio signal that the power amplifier amplification is obtained from the operational amplifier, the allocation unit are drawn from described
Power after drafting is simultaneously sent to the power amplifier by power that adjuster obtains, and the electricity accumulating unit storage is from described point
With the input power that unit obtains, the power signal obtained from the power amplifier is converted into acoustic pressure and passed by the loud speaker
Go out.
Further, further include DC/DC step-up/down adjusters, the DC/DC step-up/downs adjuster is set to described
Between electricity accumulating unit and the allocation unit, and the input terminal of the DC/DC step-up/downs adjuster connects the electric power storage list
Member, output end connect the allocation unit.
Further, the electricity accumulating unit is high-capacity nickel-hydrogen battery.
Further, the electricity accumulating unit is high capacity lithium ion battery.
According to the utility model of said program, advantage is that the utility model overcomes in the prior art
Bar-shaped acoustic device is limited by output power so that entire speaker can change the work(of output automatically during normal use
Rate reduces the distortion phenomenon during sound output.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is input power during the utility model distribution>Structural schematic diagram when output power；
Fig. 3 is input power during the utility model distribution<Structural schematic diagram when output power；
Fig. 4 is structural schematic diagram when output power and input power match during the utility model distribution.
In the figure 102, power incoming unit；104, adjuster；106, power amplifier；108, operational amplifier；110、
Audio signal source；112, loud speaker；114, allocation unit；116, electricity accumulating unit；118, DC/DC step-up/downs adjuster；121、
First arrow indicator；122, the second arrow indicator；123, third arrow indicator.
Specific implementation mode
Below in conjunction with the accompanying drawings and the utility model is further described in embodiment：
As shown in Figure 1, a kind of bar speaker, including power incoming unit 102, power amplifier 106 and operation amplifier
Device 108, the output end connection adjustor 104 of power incoming unit 102, the output end of adjuster 104 are separately connected operation amplifier
The input terminal of device 106 and allocation unit 114, operational amplifier 108 connects audio signal source 110, and output end connection power is put
The output end of big device 106, power amplifier 106 connects loud speaker 112, and the output end of allocation unit 114 connects power amplifier
106 and electricity accumulating unit 116, the output end of electricity accumulating unit 116 connects allocation unit 114.
Power incoming unit 102 receives input power from power supply, and adjuster 104 is adjusted to be received from power incoming unit 102
Input power, operational amplifier 108 amplifies the gain of audio signal received from audio signal source 110, power amplifier 106
Amplify the power of the audio signal obtained from operational amplifier 108, allocation unit 114 draws the power obtained from adjuster 104
And the power after drafting is sent to power amplifier 106, electricity accumulating unit 116 stores the input work obtained from allocation unit 114
The power signal obtained from power amplifier 106 is converted into acoustic pressure and spread out of by rate, loud speaker 112.
As shown in Fig. 2, input power>When output power, extra energy transmission is stored to electricity accumulating unit 116, point
With unit 114 power is obtained from adjuster 104（The first arrow indicator 121 in such as figure）, allocation unit 114 will obtain respectively
Power transfer to power amplifier 106 and electricity accumulating unit 116（The second arrow indicator 122 and third arrow in such as figure refer to
Show device 123）.For example, if input power>Output power considers that the power drawn from adjuster 104 by allocation unit 114 is
First watt, and be B watts for 106 required power of power amplifier.It is provided to dump power after power amplifier 106
It is（AB）Watt.Therefore power supply（AB）Watt it is stored in electricity accumulating unit 116.
As shown in figure 3, input power<When output power, loud speaker 112 obtains from power supply and electricity accumulating unit 116 respectively
Energy.Allocation unit 114 obtains power from adjuster 104 and electricity accumulating unit 116 respectively（The first arrow indicator in such as figure
121 and third arrow indicator 123）, allocation unit 114 is respectively by obtained power transfer to power amplifier 106（In such as figure
The second arrow indicator 122）.For example, if input power<Output power considers by allocation unit 114 from conditioner unit
104 power drawn are first watt, and are B watts for 106 required power of power amplifier.Then from electricity accumulating unit 116
The power drawn is（BA）Watt.
Further include DC/DC step-up/down adjusters as shown in figure 4, when output power matches with input power
118, DC/DC step-up/down adjusters 118 are set between electricity accumulating unit 116 and allocation unit 114, and DC/DC step-up/downs
The input terminal of adjuster 118 connects electricity accumulating unit 116, and output end connects allocation unit 114.DC/DC step-up/down adjusters
118 is synchronous with 116 high power of electricity accumulating unit with from the output of the low-power of allocation unit 114.
During music is just played, the output power of loud speaker 112 will not always remain at its maximum value, meeting
Constantly change.When output power is small, electricity accumulating unit 116 will temporarily store energy inside it；When output power, raise
Sound device 112 starts the energy that storage is obtained from electricity accumulating unit 216, which is used for effective to reach higher output
Mode uses, without changing general power input.When user listens to music, it can make generated megaphonia, high pitch and bass
It will be more life-like.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
And all these modifications and variations should all belong to the protection domain of the appended claims for the utility model.
Illustrative description is carried out to the utility model patent above in conjunction with attached drawing, it is clear that the reality of the utility model patent
Now be not subject to the restrictions described above, if use the utility model patent methodology and technical solution carry out it is various
Improve, or it is not improved the design of the utility model patent and technical solution are directly applied into other occasions, in this reality
With in novel protection domain.
Claims (5)
1. a kind of bar speaker, which is characterized in that described including power incoming unit, power amplifier and operational amplifier
The output end of the output end connection adjustor of power incoming unit, the adjuster is separately connected the operational amplifier and distribution
The input terminal of unit, the operational amplifier connects audio signal source, and output end connects the power amplifier, the power
The output end of amplifier connects loud speaker, and the output end of the allocation unit connects the power amplifier and electricity accumulating unit, institute
The output end for stating electricity accumulating unit connects the allocation unit.
2. bar speaker according to claim 1, which is characterized in that the power incoming unit receives input work from power supply
Rate, the adjuster adjust the input power that the power incoming unit receives, and the operational amplifier amplifies from the audio
The gain for the audio signal that signal source receives, the audio signal that the power amplifier amplification is obtained from the operational amplifier
Power, the allocation unit draw the power obtained from the adjuster and the power after drafting are sent to the power amplification
Device, the electricity accumulating unit store the input power obtained from the allocation unit, and the loud speaker will be from the power amplifier
Obtained power signal is converted into acoustic pressure outflow.
3. bar speaker according to claim 1, which is characterized in that further include DC/DC step-up/down adjusters, it is described
DC/DC step-up/down adjusters are set between the electricity accumulating unit and the allocation unit, and the DC/DC step-up/downs tune
The input terminal for saving device connects the electricity accumulating unit, and output end connects the allocation unit.
4. bar speaker according to claim 1, which is characterized in that the electricity accumulating unit is high-capacity nickel-hydrogen battery.
5. bar speaker according to claim 1, which is characterized in that the electricity accumulating unit is high capacity lithium ion battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820476354.7U CN207939722U (en) | 2018-04-04 | 2018-04-04 | A kind of bar speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820476354.7U CN207939722U (en) | 2018-04-04 | 2018-04-04 | A kind of bar speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207939722U true CN207939722U (en) | 2018-10-02 |
Family
ID=63656241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820476354.7U Expired - Fee Related CN207939722U (en) | 2018-04-04 | 2018-04-04 | A kind of bar speaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207939722U (en) |
-
2018
- 2018-04-04 CN CN201820476354.7U patent/CN207939722U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181002 Termination date: 20200404 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |