CN209105422U - Portable music signal source - Google Patents
Portable music signal source Download PDFInfo
- Publication number
- CN209105422U CN209105422U CN201821968627.6U CN201821968627U CN209105422U CN 209105422 U CN209105422 U CN 209105422U CN 201821968627 U CN201821968627 U CN 201821968627U CN 209105422 U CN209105422 U CN 209105422U
- Authority
- CN
- China
- Prior art keywords
- circuit
- socket
- music signal
- signal source
- microusb
- 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
Links
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 14
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 5
- 239000004411 aluminium Substances 0.000 claims abstract description 5
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 2
- 229920003229 poly(methyl methacrylate) Polymers 0.000 claims 1
- 239000004926 polymethyl methacrylate Substances 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 7
- 230000005236 sound signal Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 5
- 239000011521 glass Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009533 lab test Methods 0.000 description 2
- 240000005979 Hordeum vulgare Species 0.000 description 1
- 235000007340 Hordeum vulgare Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Reverberation, Karaoke And Other Acoustics (AREA)
Abstract
The utility model provides a kind of portable music signal source, the device is made of integrated aluminium section shell, digital sound source module, D class small power amplifier module, Microspeaker, binaural signal output interface, the circuit motherboard for being equipped with volt circuit and charge management circuit, single-unit poly-lithium battery seven, interior band lithium battery Charge Management, music signal is derived from digital storage, and audio signal output interface includes MICROUSB socket, two-channel 3.5mm audio socket, XH2.54-3P socket three classes.The usefulness of utility model is that Miniature musical box has concentrated each element needed for music signal source, easy to assembly, and compact can monitor digital music content in memory at any time, can provide music signal for testing audio power amplifier using simply.
Description
Technical field
The content that the utility model portable music signal source is related to belongs to electronic technology field, is as a kind of signal source
It measures sound system and music signal is provided.
Background technique
When the audio-frequency power amplifier or sound system of the new design assembly of test, first link of laboratory test be by
Sine signal source provides input signal, needs to input music signal progress measure of merit after reaching preliminary aim.Although having at present
Many big devices of music can provide sound-source signal, such as CD player, walkman, recorder and terminal etc., but
The line for using them to need as sound source device is more, and the big use of volume is not convenient enough.Mobile phone can also be used as sound equipment and set
Sound source when standby test, but since the interface specification of mobile phone is various, it generally requires to remake patchcord, then have new design assembly
Audio frequency apparatus functional reliability cannot still trust, once break down may be damaged mobile phone, therefore, new equipment test in one
As mobile phone should not be used as sound source.
The interface specification for transmitting audio signal is mostly a burden in, is generally inserted using row's needle or pin type on circuit board
Seat, the specification of traditional cable terminal have 2.5mm, 3.5mm, 6.35mm earphone plug, RCA connector, Card connector, newly
That releases has USB connector, HDMI connector etc..Laboratory test preferably selectes a standard connector, other interface systems
One transfers in standard connector.
It is frequently necessary to temporarily assemble some related devices in the case where no dedicated test equipment, in test process,
It dismantles, arrange again after use, more time and energy can be wasted.At this point, if there is a dedicated test is filled with sound source
It sets, it will be conveniently very much.
It is substantially in the modern life using digital sound source, conveniently takes, deposited to U because being stored in digital storage
It is convenient for carrying, has been widely used in disk, TF card.The decoding of digital music file is needed through corresponding decoder, and is solved
Code device has an a large amount of ready-made module, small volume and facilitates Circuit assembly, therefore has applied a surveying for sound system
Examination provides the music signal source structure of sound source for routine use.But this wiring is more mixed and disorderly, and functional reliability is still
It is defective, it can improve again on this basis.
Summary of the invention
The utility model portable music signal source is used as sound system music signal source, from technological layer, tool
There are following characteristics:
Portable music signal source by integrated aluminium section shell, digital sound source module, D class small power amplifier module, miniature raise
Sound device, binaural signal output interface, the circuit motherboard for being equipped with volt circuit and charge management circuit, single-unit poly-lithium battery
Seven parts composition, digital sound source module, lithium battery, D class small power amplifier module, binaural signal output interface is suitable by left and right
Sequence arrangement is welded on circuit motherboard by arranging needle, and as shown in Fig. 1, circuit motherboard one end placement operating element and number are deposited
Cable connector is arranged in memory interface, the other end, and circuit motherboard insertion shell notch mode is fixed, and shell two end cover plate, which opens up, to be connect
Jack.
The signal output interface of the portable music signal source include MICROUSB socket, two-channel 3.5mm audio insert
Seat, XH2.54-3P socket three classes, the ground wire and signal wire of three classes socket are in parallel relationship, and wherein MICROUSB socket doubles as sound
The charging input port of happy box, box is interior to be furnished with lithium battery charging management circuit.
The portable music signal source charge management circuit is matched there are two the red and green luminous diode of patch type, independent to weld
On one piece of small circuit board, circuit motherboard is connected to row's needle and is across the top of MICROUSB socket, light-emitting surface direction
MICROUSB socket, as shown in Fig. 2, being embedded in a piece of colourless transparent resin glass between small circuit board and MICROUSB socket
Block.Two red and green luminous diodes indicate respectively two states that charging or charging, the presence or absence of here color transparent plane glass blocks
As indicator light leaded light.
The portable music signal source carries small power amplifier and small loudspeaker, and when outside, insertion two-channel 3.5mm audio is inserted
After head, the signal input signal of included small power amplifier is truncated.
Caused by portable music signal source the utility model has the advantages that
Portable music signal source has concentrated each circuit element needed for music signal source, and there are three types of basic audios for outfit
Signaling interface, compact is more convenient using simply, to assemble using row's needle connection circuit module, and circuit is cleaner and tidier.
Two-channel small power amplifier and loudspeaker have been carried inside portable music signal source, can have been monitored at any time digital in memory
Whether music content, detection Miniature musical signal source itself work are normal.
Digital sound source module in the utility model is WAV+MP3 decoding deck, slot containing TF card, USB socket and infrared is connect
Receive head.It is USB port charging in order to balance and D class small power amplifier module operating voltage needs using the power supply of single-unit poly-lithium battery.
Used D class small power amplifier module operating voltage requirement is 2.5~5V, can be powered using single lithium battery.But MP3 decoding plate
It needs 5V to power, can only in addition use DC voltage booster circuit for the power supply of MP3 decoding plate, boost for example, by using TPS61070 chip
Deng.
Poly-lithium battery must be avoided overcharging, lithium battery Charge Management electricity is provided in the utility model
Road, settable charging current can be automatically stopped charging after full charge, so that charging process is safe and reliable.Charge Management core
Piece uses AP5056, and chip exterior includes that filter capacitor only needs 5 elements, and application circuit structure is simple.
Detailed description of the invention
Attached drawing 1 is portable music signal source internal circuit blocks layout structure figure.
1 is digital sound source module in figure, and 2 be flat type lithium battery, and 3 be D class small power amplifier module, and 4 be audio output XH2.54-
3P socket, 5 be two-channel 3.5mm audio output socket, and 6 be audio output MICROUSB interface and charging input port, and 7 be electricity
Road motherboard, 8 be power switch.
Attached drawing 2 is portable music signal source charge management circuit charging indicator light installation diagram.
6 be audio output MICROUSB interface and charging input port in figure, and 7 be circuit motherboard, and 9 be row's needle, and 10 be colourless
Transparent organic glass block, 11 be the small circuit board for welding light emitting diode.
Attached drawing 3 is portable music signal source front end view.
12 be integrated aluminium section shell in figure, and 13 be sound transmission aperture group, and 14 be infrared receiving terminal, and 15 be TF card slot, 16
It is USB socket, 17 be power switch button.
Attached drawing 4 is portable music signal source rear end view.
12 be integrated aluminium section shell in figure, and 18 be audio output MICROUSB interface and charging input interface, and 19 are
Two-channel 3.5mm audio output socket, 20 be audio output XH2.54-3P socket.
Attached drawing 5 is portable music signal source rear end face bore size figure.
Attached drawing 6 is portable music signal source front end face bore size figure.
Specific embodiment
Below with reference to the attached drawing of the utility model, the implementation of the utility model is described further.
The shell dimension of the utility model is 91 × 70 × 22mm, as shown in attached drawing 3 and attached drawing 4.The size of circuit motherboard
It is 88 × 66.5 × 1mm, digital sound source module uses 48 × 28mm size, and is fixed with screw help；Binaural signal output
Interface is all welded on circuit motherboard.Microspeaker uses 1511 double magnetic types, and outer dimension is 15 × 11 × 4mm, with bubble
Celloidin band is padded and sticks on circuit motherboard, and conducting wire is welded in small power amplifier module exit point；Lithium battery using 50 × 33 ×
The flat packaged structure of 5mm, is pasted onto circuit motherboard middle section, when being packed into shell above battery padding high temperature sponge, to solid
Determine battery.All electronic component concentrations are each attached on circuit motherboard in this way, assembly and disassembly are all very convenient.In order to protect
The reliable insulation between circuit motherboard and shell is demonstrate,proved, one layer of highland barley paper should be filled in circuit motherboard bottom.
The enclosure volume of the utility model portable music signal source is smaller, and the audio output for not accommodating more specifications connects
Mouthful, it such as can not install because basic RCA audio interface (lotus flower socket) volume is excessive, not be used, when actual needs can lead to
Cross External cable switching.It is limited by the area of end plates, not set operation button on panel, when using portable music signal source
Remote controler matched with digital sound source module is needed to be remotely controlled operation.
Digital sound source module i.e. decoder module, its built-in linear voltage reduction module, the input suitable for 6~12V voltage
And it is down to 5V, after 5V DC voltage booster circuit, it is no longer necessary to built-in decompression chip.Built-in drop should be removed in assembling process
Chip is pressed, uses the input/output terminal that chip inductor connects former chip instead.
The position of opening size of shell two end cover plate is as shown in attached drawing 5 and attached drawing 6.
The TF card for having music file or the USB flash disk for having music file are inserted into while use, music box can be searched automatically
Rope music file plays out.When music signal is sent by XH mouthfuls or MICROUSB mouthfuls to tested sound amplifier, by external speaker
When broadcasting, the sound that portable music signal source carries loudspeaker can generate interference, can use one two-channel 3.5mm sound of insertion
The method of frequency plug cuts off the sound of itself.
Claims (3)
1. portable music signal source, it is characterized in that: by integrated aluminium section shell, digital sound source module, D class small power amplifier mould
Block, Microspeaker, binaural signal output interface, the circuit motherboard for being equipped with booster circuit and charge management circuit, single-unit
Seven part of poly-lithium battery composition, by digital sound source module, lithium battery, D class small power amplifier module, binaural signal output interface
Four are arranged by left and right sequence, are welded on circuit motherboard by arranging needle, and circuit motherboard one end placement operating element and number are deposited
Cable connector is arranged in memory interface, the other end, and circuit motherboard insertion shell notch mode is fixed, and shell two end cover plate, which opens up, to be connect
Jack.
2. portable music signal source according to claim 1, it is characterized in that: signal output interface includes that MICROUSB is inserted
Seat, two-channel 3.5mm audio socket, XH2.54-3P socket three classes, wherein MICROUSB socket is inputted as the charging of music box
Mouthful, it is furnished with lithium battery charging management circuit in box.
3. portable music signal source according to claim 1, it is characterized in that: charge management circuit is matched, there are two patch type
Red and green luminous diode is individually welded on one piece of small circuit board, is connected to circuit motherboard with row's needle and is across MICROUSB
The top of socket, light-emitting surface are embedded in a piece of colourless towards MICROUSB socket between small circuit board and MICROUSB socket
Bright poly (methyl methacrylate) plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821968627.6U CN209105422U (en) | 2018-11-15 | 2018-11-15 | Portable music signal source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821968627.6U CN209105422U (en) | 2018-11-15 | 2018-11-15 | Portable music signal source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209105422U true CN209105422U (en) | 2019-07-12 |
Family
ID=67161640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821968627.6U Expired - Fee Related CN209105422U (en) | 2018-11-15 | 2018-11-15 | Portable music signal source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209105422U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110809218A (en) * | 2019-11-22 | 2020-02-18 | 广东联晟通信科技有限公司 | DSP power amplifier device based on truck |
-
2018
- 2018-11-15 CN CN201821968627.6U patent/CN209105422U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110809218A (en) * | 2019-11-22 | 2020-02-18 | 广东联晟通信科技有限公司 | DSP power amplifier device based on truck |
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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: 20190712 Termination date: 20191115 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |