CN206908816U - A kind of power three frequency division power amplification system - Google Patents
A kind of power three frequency division power amplification system Download PDFInfo
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- CN206908816U CN206908816U CN201720692962.7U CN201720692962U CN206908816U CN 206908816 U CN206908816 U CN 206908816U CN 201720692962 U CN201720692962 U CN 201720692962U CN 206908816 U CN206908816 U CN 206908816U
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Abstract
The utility model belongs to digital power amplifier technical field, a kind of more particularly to power three frequency division power amplification system, the pre-amplification circuit output is connected to frequency divider U2, the frequency divider U2 is exported respectively is connected to high pitch power amplifier U3, middle pitch power amplifier U4, bass power amplifier U5, the high pitch power amplifier U3 outputs are connected to high pitch loudspeaker T1, the middle pitch power amplifier U4 outputs are connected to Squawker T2, the bass power amplifier U5 outputs are connected to woofer T3, the utility model solves prior art, and power amplifier to be present complicated, cost is high and the problem of can not obtaining preferable playing quality, with simple in construction, cost is low, and and can obtains the advantageous effects of very high playing quality.
Description
Technical field
The utility model belongs to digital power amplifier technical field, more particularly to a kind of power three frequency division power amplification system.
Background technology
Power amplifier, referred to as " power amplifier ", refer under the conditions of given distortion rate, maximum power output can be produced to drive
The amplifier of a certain load, such as loudspeaker, power amplifier serve the hinge of " tissue, coordination " in whole sound system
Effect, can dominate whole system to a certain extent provide good tonequality output, and traditional prime frequency dividing is front stage circuits
In as caused by electronic component frequency dividing, then Gao ﹑ Zhong ﹑ subwoofer systems are driven by respective power amplifier respectively, prior art is deposited
Power amplifier is complicated, cost is high and the problem of can not obtaining preferable playing quality.
Utility model content
The utility model provides a kind of power three frequency division power amplification system, to solve to propose existing skill in above-mentioned background technology
Art has that power amplifier is complicated, cost is high and the problem of can not obtaining preferable playing quality.
The technical problem that the utility model solves is realized using following technical scheme：A kind of power three frequency division power amplifier system
System, including pre-amplification circuit U1, the pre-amplification circuit output are connected to frequency divider U2, and the frequency divider U2 is exported respectively
It is connected to high pitch power amplifier U3, middle pitch power amplifier U4, bass power amplifier U5, the high pitch power amplifier U3 outputs connection
In high pitch loudspeaker T1, it is defeated that the middle pitch power amplifier U4 outputs are connected to Squawker T2, the bass power amplifier U5
Go out to be connected to woofer T3.
Further, the high pitch power amplifier U3 includes electric capacity C1 and inductance L1, one end of the electric capacity C1 are connected to height
Sound power amplifier U3 input, its other end are connected to inductance L1 one end, and the other end of the inductance L1 is connected to high pitch
Power amplifier U3 output end.
Further, during the one end of the middle pitch power amplifier U4 including electric capacity C2 and inductance L2, the electric capacity C2 is connected to
Sound power amplifier U4 input, its other end are connected to inductance L2 one end, and the other end of the inductance L2 is connected to middle pitch
Power amplifier U4 output end.
Further, the one end of the bass power amplifier U5 including electric capacity C3 and inductance L3, the electric capacity C3 is connected to low
Sound power amplifier U5 input, its other end are connected to inductance L3 one end, and the other end of the inductance L3 is connected to bass
Power amplifier U5 output end.
Advantageous effects：
1st, this patent is connected to frequency divider U2, the frequency divider U2 company of output respectively using pre-amplification circuit output
High pitch power amplifier U3, middle pitch power amplifier U4, bass power amplifier U5 are connected to, the high pitch power amplifier U3 outputs are connected to
High pitch loudspeaker T1, the middle pitch power amplifier U4 outputs are connected to Squawker T2, the bass power amplifier U5 outputs
Woofer T3 is connected to, because the frequency divider of speaker system is divided into prime frequency dividing and the class of Passive 2, traditional prime
Frequency dividing is to be divided in front stage circuits as caused by electronic component, then drives Gao ﹑ Zhong ﹑ woofers system respectively by respective power amplifier
System, belongs to small-signal Active crossover；And Passive is then to be located at power amplifier with raising one's voice by what inductance, electric capacity, resistive element were formed
Passive frequency dividing circuit between device, therefore, using the speaker system of Passive is simple in construction, cost is low, and and can obtains
Obtain very high playing quality.
2nd, inductance element D.C. resistance, inductance value error are the smaller the better in this patent circuit, use air core inductor so that frequency
It is more preferable to ring plateau degree.
3rd, audio special-purpose metal polypropylene capactive is preferred in this patent, reduces capacity cell in circuit and is lost.
4th, this patent makes each loudspeaker unit be assigned to flatter signal power, and plays the work of protection tweeter
With improving playing quality.
Brief description of the drawings
Fig. 1 is a kind of structural representation of power three frequency division power amplification system of the utility model.
Embodiment
The utility model is described further below in conjunction with accompanying drawing：
In figure：U1- pre-amplification circuits, U2- frequency dividers, U3- high pitch power amplifiers, U4- middle pitch power amplifiers, U5- are low
Sound power amplifier, T1- high pitch loudspeakers, T2- Squawkers, T3- woofers, C1~C3- electric capacity, L1~L3- inductance.
Embodiment：
The present embodiment：As shown in figure 1, a kind of power three frequency division power amplification system, including pre-amplification circuit U1, it is described preposition
Amplifying circuit output is connected to frequency divider U2, and the frequency divider U2 is exported respectively is connected to high pitch power amplifier U3, middle pitch power amplifier
Circuit U 4, bass power amplifier U5, the high pitch power amplifier U3 outputs are connected to high pitch loudspeaker T1, the middle pitch power amplifier electricity
U4 outputs in road are connected to Squawker T2, and the bass power amplifier U5 outputs are connected to woofer T3.
The high pitch power amplifier U3 includes electric capacity C1 and inductance L1, the electric capacity C1 one end are connected to high pitch power amplifier electricity
Road U3 input, its other end are connected to inductance L1 one end, and the other end of the inductance L1 is connected to high pitch power amplifier
U3 output end.
The middle pitch power amplifier U4 includes electric capacity C2 and inductance L2, the electric capacity C2 one end are connected to middle pitch power amplifier electricity
Road U4 input, its other end are connected to inductance L2 one end, and the other end of the inductance L2 is connected to middle pitch power amplifier
U4 output end.
The bass power amplifier U5 includes electric capacity C3 and inductance L3, the electric capacity C3 one end are connected to bass power amplifier electricity
Road U5 input, its other end are connected to inductance L3 one end, and the other end of the inductance L3 is connected to bass power amplifier
U5 output end.
Operation principle：
This patent is connected to frequency divider U2, the frequency divider U2 by pre-amplification circuit output and exports connection respectively
In high pitch power amplifier U3, middle pitch power amplifier U4, bass power amplifier U5, the high pitch power amplifier U3 outputs are connected to height
Sound loudspeaker T1, the middle pitch power amplifier U4 outputs are connected to Squawker T2, and the bass power amplifier U5 outputs connect
Woofer T3 is connected to, because the frequency divider of speaker system is divided into prime frequency dividing and the class of Passive 2, traditional preceding fraction
Frequency is to be divided in front stage circuits as caused by electronic component, then drives Gao ﹑ Zhong ﹑ woofers system respectively by respective power amplifier
System, belongs to small-signal Active crossover；And Passive is then to be located at power amplifier with raising one's voice by what inductance, electric capacity, resistive element were formed
Passive frequency dividing circuit between device, the utility model solve prior art and have that power amplifier is complicated, cost is high and not
The problem of preferable playing quality can be obtained, have that simple in construction, cost is low, and and can obtains having for very high playing quality
Beneficial technique effect.
Using the technical solution of the utility model, or those skilled in the art is in the inspiration of technical solutions of the utility model
Under, similar technical scheme is designed, and reach above-mentioned technique effect, it is to fall into the scope of protection of the utility model.
Claims (4)
1. a kind of power three frequency division power amplification system, it is characterised in that including pre-amplification circuit U1, the pre-amplification circuit is defeated
Go out to be connected to frequency divider U2, the frequency divider U2 is exported respectively is connected to high pitch power amplifier U3, middle pitch power amplifier U4, bass
Power amplifier U5, the high pitch power amplifier U3 outputs are connected to high pitch loudspeaker T1, and the middle pitch power amplifier U4 outputs connect
Squawker T2 is connected to, the bass power amplifier U5 outputs are connected to woofer T3.
A kind of 2. power three frequency division power amplification system according to claim 1, it is characterised in that the high pitch power amplifier U3
One end including electric capacity C1 and inductance L1, the electric capacity C1 is connected to high pitch power amplifier U3 input, the connection of its other end
In inductance L1 one end, the other end of the inductance L1 is connected to high pitch power amplifier U3 output end.
A kind of 3. power three frequency division power amplification system according to claim 1, it is characterised in that the middle pitch power amplifier U4
One end including electric capacity C2 and inductance L2, the electric capacity C2 is connected to middle pitch power amplifier U4 input, the connection of its other end
In inductance L2 one end, the other end of the inductance L2 is connected to middle pitch power amplifier U4 output end.
A kind of 4. power three frequency division power amplification system according to claim 1, it is characterised in that the bass power amplifier U5
One end including electric capacity C3 and inductance L3, the electric capacity C3 is connected to bass power amplifier U5 input, the connection of its other end
In inductance L3 one end, the other end of the inductance L3 is connected to bass power amplifier U5 output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720692962.7U CN206908816U (en) | 2017-06-15 | 2017-06-15 | A kind of power three frequency division power amplification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720692962.7U CN206908816U (en) | 2017-06-15 | 2017-06-15 | A kind of power three frequency division power amplification system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206908816U true CN206908816U (en) | 2018-01-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720692962.7U Active CN206908816U (en) | 2017-06-15 | 2017-06-15 | A kind of power three frequency division power amplification system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206908816U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108833815A (en) * | 2018-07-10 | 2018-11-16 | 深圳创维－Rgb电子有限公司 | TV set built-in sound box and television set |
| WO2019153123A1 (en) * | 2018-02-06 | 2019-08-15 | 万魔声学科技有限公司 | Frequency division modular earphones and audio control method |
-
2017
- 2017-06-15 CN CN201720692962.7U patent/CN206908816U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019153123A1 (en) * | 2018-02-06 | 2019-08-15 | 万魔声学科技有限公司 | Frequency division modular earphones and audio control method |
| CN108833815A (en) * | 2018-07-10 | 2018-11-16 | 深圳创维－Rgb电子有限公司 | TV set built-in sound box and television set |
| CN108833815B (en) * | 2018-07-10 | 2021-01-12 | 深圳创维－Rgb电子有限公司 | Television built-in sound box and television |
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