CN207427441U - A kind of power amplifier module of mobile pull rod speaker - Google Patents
A kind of power amplifier module of mobile pull rod speaker Download PDFInfo
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- CN207427441U CN207427441U CN201721258581.4U CN201721258581U CN207427441U CN 207427441 U CN207427441 U CN 207427441U CN 201721258581 U CN201721258581 U CN 201721258581U CN 207427441 U CN207427441 U CN 207427441U
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- 239000003990 capacitor Substances 0.000 claims abstract description 14
- 102100024452 DNA-directed RNA polymerase III subunit RPC1 Human genes 0.000 claims description 6
- 101000689002 Homo sapiens DNA-directed RNA polymerase III subunit RPC1 Proteins 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 5
- 230000005236 sound signal Effects 0.000 claims description 5
- 230000008030 elimination Effects 0.000 claims description 3
- 238000003379 elimination reaction Methods 0.000 claims description 3
- 230000003321 amplification Effects 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 238000001914 filtration Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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Abstract
A kind of power amplifier module of mobile pull rod speaker, the power amplifier module connect the loudspeaker and power module of the mobile pull rod speaker respectively, and the power module includes PVCC power supplys；The power amplifier module includes digital power amplifier chip U14, eliminates switching surge circuit, inductance L5, inductance L6, polar capacitor C164, polar capacitor C157 and needle stand CN2.The utility model provides a kind of power amplifier module of mobile pull rod speaker, and using digit chip, power consumption is small, and energy-efficient using power supply, circuit structure is simple, and tonequality is good, can effectively improve the cruising time of mobile pull rod speaker.
Description
Technical field
The utility model is related to speaker technology fields, particularly a kind of power amplifier module of mobile pull rod speaker.
Background technology
Modern society, Mobile loudspeaker box are widely applied in many different occasions, have become curbside sales field, square
The capital equipment that dance, the small-sized performance in field are used when needing public address.Storage is used when being used outdoors due to Mobile loudspeaker box mostly
Battery powered, and often power consumption is big for existing power amplifier module, causes the cruising time that Mobile loudspeaker box open air uses short, it is difficult
To meet the needs of user is to multi-functional, high-performance mobile sound-box device；And reserve of electricity it is big accumulator volume it is also big, can cause
Mobile loudspeaker box volume is big, inconvenient for use.
Utility model content
In order to overcome the disadvantages mentioned above of the prior art, the purpose of this utility model is to provide a kind of work(of mobile pull rod speaker
Rate amplification module, using digit chip, power consumption is small, and energy-efficient using power supply, circuit structure is simple, and tonequality is good, can have
Effect improves the cruising time of mobile pull rod speaker.
Technical solution is used by the utility model solves its technical problem：A kind of power amplification of mobile pull rod speaker
Module, the power amplifier module connect the loudspeaker and power module of the mobile pull rod speaker, the power module bag respectively
Include PVCC power supplys；The power amplifier module includes digital power amplifier chip U14, eliminates switching surge circuit, inductance L5, inductance
L6, polar capacitor C164, polar capacitor C157 and needle stand CN2；15 feet of the PVCC power supplys connection digital power amplifier chip U14,
16 feet, 27 feet and 28 feet, 15 feet, 16 feet of digital power amplifier chip U14 are connected and pass through capacitance C155 in parallel, capacitance
C156, polar capacitor C157 are grounded；27 feet, 28 feet of digital power amplifier chip U14 are connected and pass through capacitance C162 in parallel, electricity
Hold C163, polar capacitor C164 ground connection；The 7 feet connection AVCC power supplys of digital power amplifier chip U14, and pass through capacitance C151 and be grounded,
And pass through resistance R151 connection PVCC power supplys；5 feet of digital power amplifier chip U14 are grounded by resistance R155, and pass through resistance
R152 connection AVCC power supplys, 6 feet of digital power amplifier chip U14 are grounded by resistance R154, and pass through resistance R153 connections AVCC
Power supply；18 feet, 20 feet of digital power amplifier chip U14 are connected, and connect inductance L5, one end of capacitance C158, capacitance respectively
17 feet, 21 feet of the other end connection digital power amplifier chip U14 of C158,1 foot of the other end connection needle stand CN2 of inductance L5, and
It is grounded by capacitance C159；23 feet, 25 feet of digital power amplifier chip U14 are connected, and respectively connect inductance L6, capacitance C160
One end, 22 feet, 26 feet of the other end connection digital power amplifier chip U14 of capacitance C160, the other end connection needle stand CN2 of inductance L6
2 feet, and pass through capacitance C161 and be grounded.
As further improvement of the utility model：The elimination switching surge circuit includes diode D8, two pole of voltage stabilizing
Pipe D9, triode Q8, triode Q9, resistance R162 and capacitance C165；1 foot, 2 feet of the digital power amplifier chip U14 are connected
And the collector of connecting triode Q9, the collector of triode Q9 pass through resistance R161 connection PVCC power supplys；The hair of triode Q9
Emitter-base bandgap grading, the emitter of triode Q8 are connected and are grounded；The base stage of triode Q9 passes through resistance R162 connection MUTE signal outputs
End, and pass through the collector of resistance R160 connecting triodes Q8, the collector of triode Q8 passes through resistance R159 connections PVCC electricity
Source；The base stage of triode Q8 connects the anode of zener diode D9 and is grounded by resistance R158, the cathode of zener diode D9
By diode D8 in parallel, resistance R157 connection PVCC power supplys, and it is grounded by capacitance C165.
As further improvement of the utility model：15 feet, 16 feet, 27 feet and 28 feet of the digital power amplifier chip U14
For foot of powering；0 foot of digital power amplifier chip U14,3 feet, 4 feet, 8 feet, 19 feet, 24 feet ground connection；12 feet of digital power amplifier chip U14
Connect OUT_AMP audio signal input ends.
As further improvement of the utility model：9 feet, 10 feet of the digital power amplifier chip U14 are connected and pass through
Capacitance C152 is grounded, and 11 feet of digital power amplifier chip U14 are grounded by capacitance C153, and 14 feet of digital power amplifier chip U14 pass through
7 feet of resistance R156 connection digital power amplifier chips U14.
The needle stand CN2 connections loudspeaker.
Compared with prior art, the beneficial effects of the utility model are：A kind of power amplifier module of mobile pull rod speaker,
It uses digit chip, and power consumption is small, and energy-efficient using power supply, circuit structure is simple, and tonequality is good, can effectively improve mobile drawing
The cruising time of bar speaker.
Description of the drawings
Fig. 1 is the circuit structure diagram of the utility model.
Specific embodiment
The utility model is further illustrated with embodiment in conjunction with description of the drawings：
Case study on implementation one：With reference to figure 1, a kind of power amplifier module of mobile pull rod speaker, the power amplifier module point
The loudspeaker and power module of the mobile pull rod speaker are not connected, and the power module includes PVCC power supplys；The power amplification
Module includes digital power amplifier chip U14, eliminates switching surge circuit, inductance L5, inductance L6, polar capacitor C164, polar capacitor
C157 and needle stand CN2；15 feet, 16 feet, 27 feet and 28 feet of the PVCC power supplys connection digital power amplifier chip U14, digital power amplifier
15 feet, 16 feet of chip U14, which are connected and pass through capacitance C155 in parallel, capacitance C156, polar capacitor C157, to be grounded；Digital work(
27 feet of chip U14 are put, 28 feet are connected and pass through capacitance C162 in parallel, capacitance C163, polar capacitor C164 ground connection；Number
Power amplifier chips U14 is high efficiency high-quality digital power amplifier chip, and PVCC power supplys are for the power supply 15 of electrical connection digital power amplifier chip U14
Foot, 16 feet, 27 feet, 28 feet, and by capacitance C155, capacitance C156, capacitance C157, capacitance C162, capacitance C163, capacitance C164 into
Row filtering；
The 7 feet connection AVCC power supplys of digital power amplifier chip U14, and pass through capacitance C151 and be grounded, and pass through resistance R151 and connect
Connect PVCC power supplys；There is simulation preamplifying circuit in the inside of digital power amplifier chip U14 chips, to improve tonequality, analog portion
Power supply is separated, and obtaining AVCC power supply voltage supplyings after resistance R151, capacitance C151 filtering by PVCC power supplys is sent to number
7 feet of power amplifier chips U14 chips.
5 feet of digital power amplifier chip U14 are grounded by resistance R155, and pass through resistance R152 connection AVCC power supplys, number
6 feet of power amplifier chips U14 are grounded by resistance R154, and pass through resistance R153 connection AVCC power supplys；Digital power amplifier chip U14's
5th, 6 feet are that internal amplification factor gain is set, and are determined by external resistance R152, resistance R153, resistance R154, resistance R155 settings
It is fixed；
18 feet, 20 feet of digital power amplifier chip U14 are connected, and connect inductance L5, one end of capacitance C158, capacitance respectively
17 feet, 21 feet of the other end connection digital power amplifier chip U14 of C158,1 foot of the other end connection needle stand CN2 of inductance L5, and
It is grounded by capacitance C159；23 feet, 25 feet of digital power amplifier chip U14 are connected, and respectively connect inductance L6, capacitance C160
One end, 22 feet, 26 feet of the other end connection digital power amplifier chip U14 of capacitance C160, the other end connection needle stand CN2 of inductance L6
2 feet, and pass through capacitance C161 and be grounded.12 feet of OUT_AMP audio signals input digital power amplifier chip U14, digital power amplifier core
20 feet, 23 feet of piece U14 are PWM count word audio output, pass through inductance L5, capacitance C159, inductance L6, capacitance C161 number filters
Analog audio signal is reduced to after ripple, is inserted by CN2 needle stands on loudspeaker and restores sound broadcasting.
The elimination switching surge circuit includes diode D8, zener diode D9, triode Q8, triode Q9, resistance
R162 and capacitance C165；1 foot, 2 feet of the digital power amplifier chip U14 are connected and the collector of connecting triode Q9, three poles
The collector of pipe Q9 passes through resistance R161 connection PVCC power supplys；Emitter, the emitter of triode Q8 of triode Q9 is connected
And it is grounded；The base stage of triode Q9 passes through resistance R160 connecting triodes by resistance R162 connection MUTE signal output parts
The collector of Q8, the collector of triode Q8 pass through resistance R159 connection PVCC power supplys；The base stage connection voltage stabilizing two of triode Q8
It the anode of pole pipe D9 and is grounded by resistance R158, the cathode of zener diode D9 passes through diode D8, resistance R157 in parallel
PVCC power supplys are connected, and are grounded by capacitance C165.1 foot of the collector output control digital power amplifier chip U14 of triode Q9,
2 feet；The mute system of MUTE signal output parts connection microcontroller is made an uproar unit, and microcontroller can be sent quiet when using earphone as output
Sound control system.
15 feet, 16 feet, 27 feet and 28 feet of the digital power amplifier chip U14 are power supply foot；The 0 of digital power amplifier chip U14
Foot, 3 feet, 4 feet, 8 feet, 19 feet, 24 feet ground connection；The 12 feet connection OUT_AMP audio signal input ends of digital power amplifier chip U14.
9 feet, 10 feet of the digital power amplifier chip U14 are connected and are grounded by capacitance C152, digital power amplifier chip U14
11 feet be grounded by capacitance C153,14 feet of digital power amplifier chip U14 pass through resistance R156 connection digital power amplifier chips U14's
7 feet.
The needle stand CN2 connections loudspeaker.TP13, TP14 in Fig. 1 are the test points on wiring board, during for plant produced
It does fixture test and facilitates what repairman's repair used.
The major function of the utility model：A kind of power amplifier module of mobile pull rod speaker uses digit chip, consumption
Electricity is small, and energy-efficient using power supply, circuit structure is simple, and tonequality is good, can effectively improve the cruising time of mobile pull rod speaker.
In conclusion after those of ordinary skill in the art read the utility model file, skill according to the present utility model
Art scheme and technical concept make other various corresponding conversion schemes without creative mental labour, and it is new to belong to this practicality
The scope that type is protected.
Claims (5)
1. a kind of power amplifier module of mobile pull rod speaker, the power amplifier module connect the mobile pull rod speaker respectively
Loudspeaker and power module, it is characterised in that：The power module includes PVCC power supplys；The power amplifier module includes number
Power amplifier chips U14, switching surge circuit, inductance L5, inductance L6, polar capacitor C164, polar capacitor C157 and needle stand are eliminated
CN2；15 feet, 16 feet, 27 feet and 28 feet of the PVCC power supplys connection digital power amplifier chip U14, the 15 of digital power amplifier chip U14
Foot, 16 feet, which are connected and pass through capacitance C155 in parallel, capacitance C156, polar capacitor C157, to be grounded；Digital power amplifier chip U14's
27 feet, 28 feet, which are connected and pass through capacitance C162 in parallel, capacitance C163, polar capacitor C164, to be grounded；Digital power amplifier chip U14
7 feet connection AVCC power supplys, and pass through capacitance C151 and be grounded, and pass through resistance R151 connection PVCC power supplys；Digital power amplifier chip
5 feet of U14 are grounded by resistance R155, and pass through resistance R152 connection AVCC power supplys, and 6 feet of digital power amplifier chip U14 pass through
Resistance R154 is grounded, and passes through resistance R153 connection AVCC power supplys；18 feet, 20 feet of digital power amplifier chip U14 are connected, and point
Not Lian Jie inductance L5, one end of capacitance C158,17 feet, 21 feet of the other end connection digital power amplifier chip U14 of capacitance C158, electricity
Feel 1 foot of the other end connection needle stand CN2 of L5, and pass through capacitance C159 and be grounded；23 feet of digital power amplifier chip U14,25 foot phases
Connection, and inductance L6, one end of capacitance C160 are connected respectively, the 22 of the other end connection digital power amplifier chip U14 of capacitance C160
Foot, 26 feet, 2 feet of the other end connection needle stand CN2 of inductance L6, and pass through capacitance C161 and be grounded.
2. a kind of power amplifier module of mobile pull rod speaker according to claim 1, it is characterised in that：The elimination is opened
Jing-Well point Guanchon, which hits circuit, includes diode D8, zener diode D9, triode Q8, triode Q9, resistance R162 and capacitance C165；It is described
1 foot, 2 feet of digital power amplifier chip U14 are connected and the collector of connecting triode Q9, the collector of triode Q9 pass through resistance
R161 connection PVCC power supplys；Emitter, the emitter of triode Q8 of triode Q9 is connected and is grounded；The base stage of triode Q9
By resistance R162 connection MUTE signal output parts, and pass through the collector of resistance R160 connecting triodes Q8, triode Q8's
Collector passes through resistance R159 connection PVCC power supplys；The base stage of triode Q8 connects the anode of zener diode D9 and passes through resistance
R158 is grounded, and the cathode of zener diode D9 passes through capacitance by diode D8 in parallel, resistance R157 connection PVCC power supplys
C165 is grounded.
3. a kind of power amplifier module of mobile pull rod speaker according to claim 1, it is characterised in that：The number work(
15 feet, 16 feet, 27 feet and 28 feet of chip U14 are put as power supply foot；0 foot of digital power amplifier chip U14,3 feet, 4 feet, 8 feet, 19
Foot, 24 feet ground connection；The 12 feet connection OUT_AMP audio signal input ends of digital power amplifier chip U14.
4. a kind of power amplifier module of mobile pull rod speaker according to claim 1, it is characterised in that：The number work(
Put 9 feet of chip U14,10 feet are connected and are grounded by capacitance C152,11 feet of digital power amplifier chip U14 pass through capacitance C153
Ground connection, 7 feet that 14 feet of digital power amplifier chip U14 pass through resistance R156 connection digital power amplifier chips U14.
5. a kind of power amplifier module of mobile pull rod speaker according to claim 1, it is characterised in that：The needle stand
CN2 connection loudspeaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721258581.4U CN207427441U (en) | 2017-09-28 | 2017-09-28 | A kind of power amplifier module of mobile pull rod speaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721258581.4U CN207427441U (en) | 2017-09-28 | 2017-09-28 | A kind of power amplifier module of mobile pull rod speaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207427441U true CN207427441U (en) | 2018-05-29 |
Family
ID=62313221
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721258581.4U Active CN207427441U (en) | 2017-09-28 | 2017-09-28 | A kind of power amplifier module of mobile pull rod speaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207427441U (en) |
-
2017
- 2017-09-28 CN CN201721258581.4U patent/CN207427441U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 510000, 4th Floor, Longlian Technology Building, Qingbu Ping'an 1st Street, Xinya Street, Huadu District, Guangzhou City, Guangdong Province Patentee after: Guangzhou Zhongzhi Audio Technology Co.,Ltd. Country or region after: China Address before: B-01, F3, H5, No. 8 Jinghu Avenue, Xinya Street, Huadu District, Guangzhou, Guangdong Province, 510000 Patentee before: GUANGZHOU ODAK AUDIO TECHNOLOGY CO.,LTD. Country or region before: China |
|
| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240327 Address after: 511500 Building 2, Guangdong Huijie Intelligent Technology Co., Ltd., Guangzhou (Qingyuan) Industrial Transfer Industrial Park, Shijiao Town, Qingcheng District, Qingyuan City, Guangdong Province, China Patentee after: Guangdong Huijie Electronics Co.,Ltd. Country or region after: China Address before: 510000, 4th Floor, Longlian Technology Building, Qingbu Ping'an 1st Street, Xinya Street, Huadu District, Guangzhou City, Guangdong Province Patentee before: Guangzhou Zhongzhi Audio Technology Co.,Ltd. Country or region before: China |
|
| TR01 | Transfer of patent right |