CN209320883U - A kind of vehicle mounted MP 3 circuit - Google Patents
A kind of vehicle mounted MP 3 circuit Download PDFInfo
- Publication number
- CN209320883U CN209320883U CN201822277477.0U CN201822277477U CN209320883U CN 209320883 U CN209320883 U CN 209320883U CN 201822277477 U CN201822277477 U CN 201822277477U CN 209320883 U CN209320883 U CN 209320883U
- Authority
- CN
- China
- Prior art keywords
- resistance
- module
- pin
- capacitor
- key
- 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
Landscapes
- Telephone Function (AREA)
Abstract
The utility model discloses a kind of vehicle mounted MP 3 circuits, including Power Entry Module, key module, MCU module, speech reception module, TF card input module, FM transmission module, Bluetooth communication modules, wired input module, external hoot device；The output end of the Power Entry Module and the input terminal of key module are electrically connected, the output end input terminal electric connection corresponding with MCU module respectively of the output end of the key module, the output end of speech reception module, the output end of TF card input module, Bluetooth communication modules, the output end of the MCU module and the input terminal of FM transmission module are electrically connected, and the output end of the FM transmission module outputs signal to external hoot device and plays；The utility model has the advantages that can the transmission of FM signal, a variety of audio input modes, voice communication.
Description
Technical field
The utility model belongs to mobile unit technical field, and in particular to a kind of vehicle mounted MP 3 circuit.
Background technique
As automobile is more and more, demand of the people to the various functions of automobile is more and more finer, wherein with automobile audio
It is the most prominent.User puts the music on for convenience in driving procedure, can generally open the Bluetooth function and vapour of smart machine
The bluetooth module of vehicle connects, and the sound equipment of smart machine and automobile is connected, realizes the broadcasting of audio.Since many automobiles use the longevity
Order it is long, most of crates only equipped with FM function, therefore, can not with smart machine without bluetooth, USB interface etc.
Connection, use are quite inconvenient；User can only play music outside or using earphone, then play music outside not no automobile audio
Effect is good, again inconvenient using wired earphone, therefore, listens to music and receives calls for convenience, can generally select using bluetooth
Earphone.For bluetooth headset since volume is smaller, inside is arranged many electronic devices, the size of battery also with regard to very little, reserve of electricity compared with
It is low, several hours can only be generally used, are charged fairly cumbersome.
Utility model content
The utility model is directed to above-described deficiency, and providing one kind can the transmission of FM signal, a variety of audio input modes, language
The vehicle mounted MP 3 circuit of sound call.
To achieve the above object, the utility model provides the following technical solutions: a kind of vehicle mounted MP 3 circuit, including power supply are defeated
Enter module, key module, MCU module, speech reception module, TF card input module, FM transmission module, Bluetooth communication modules, have
Line input module, external hoot device；The output end of the Power Entry Module and the input terminal of key module are electrical
Connection, the output end of the key module, the output end of speech reception module, the output end of TF card input module, Bluetooth transmission
Input terminal corresponding with MCU module is electrically connected the output end of module respectively, the output end and FM transmission module of the MCU module
Input terminal be electrically connected, the FM transmission module outputs signal to external hoot device and plays.
Preferably, the Power Entry Module includes USB interface, lithium battery, diode D4, triode Q1, resistance R9, electricity
Hinder R10, resistance R11, resistance R12, light emitting diode D2；The positive terminal of the USB interface be separately connected diode D4 one end,
The emitter of triode Q1, the other end of the diode D4 are separately connected positive terminal, the key module of lithium battery through resistance R9
Input terminal, the negative pole end of the lithium battery, the negative pole end of USB interface be grounded, and the positive terminal of the lithium battery is through resistance R10
It is connect with the base stage of triode Q1, the collector of the triode Q1 is sent out through one end of resistance R11 connection light-emitting diodes D2 pipe
Emitter of the one end of optical diode D2 through resistance R12 connecting triode Q1, the other end ground connection of the light emitting diode D2.
Preferably, the key module includes on/off circuit, button inputting circuits；The on/off circuit includes field effect
It should pipe Q3, triode Q2, diode D3, resistance R22, resistance R23, resistance R24；The model of the diode D2 is set as
The positive terminal of the drain electrode connection lithium battery of BAT54C, the field-effect tube Q3, and the drain electrode of field-effect tube Q3 is connected through resistance R22
The grid of field-effect tube Q3, the corresponding input terminal of source electrode connection MCU module of the field-effect tube Q3, the collection of the triode Q2
Electrode is through the corresponding output end of resistance R24 connection MCU module, and the base stage of the triode Q2 is through resistance R23 connecting triode Q2
Collector, and the base earth of triode Q2, the emitter of the triode Q2 are separately connected the grid of field-effect tube Q3, two
The first pin of pole pipe D3, the corresponding output end of second pin connection button inputting circuits of the diode D3, two pole
The corresponding input terminal of third pin connection button inputting circuits of pipe D3, the corresponding output end connection of the button inputting circuits
The corresponding input terminal of MCU module.
Preferably, the button inputting circuits include key K1, key K2, key K3, key K4, light emitting diode D1,
Resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R15, resistance R16；One end of the key K1 connects diode
The third pin of D3, the other end ground connection of key K1, one end of the key K2, one end of key K3, one end of key K4 are equal
Ground connection, the other end of the key K2, the other end of key K3, key K4 the other end respectively through corresponding resistance R2, resistance
After R3, resistance R4, it is all connected with one end of resistance R5, and one end of resistance R5 is separately connected the corresponding input terminal of MCU module, resistance
One end of R1, one end of resistance R15, resistance R16 one end, the other end of the resistance R5 is through light emitting diode D1 connection MCU
The corresponding output end of module, the corresponding output end of other end connection MCU module of the resistance R1, the resistance R15's is another
End connects the output end of wired input module, the second pin of the other end connection diode D3 of the resistance R16.
Preferably, the speech reception module includes microphone, resistance R8, capacitor C14；Distinguish one end of the microphone
One end of resistance R8, one end of capacitor C14, the other end ground connection of the microphone are connected, the other end of the resistance R8 connects
Connect the corresponding output end of MCU module, the corresponding input terminal of other end connection MCU module of the capacitor C14.
Preferably, the TF card input module includes card slot TF1, resistance R6, resistance R7；The third of the card slot TF1 is drawn
Foot, the 5th pin, the 7th pin are separately connected the corresponding input terminal of MCU module, and the 5th pin of the card slot TF1 is also through resistance
The 9th pin of R7 connection card slot TF1, the 4th pin of the card slot TF1 through the corresponding output end of resistance R6 connection MCU module,
The 6th pin, the 11st pin of the card slot TF1 is grounded.
Preferably, the FM transmission module includes antenna ANT2, inductance L3, inductance L4, triode Q4, resistance R17, resistance
R18, capacitor C9, capacitor C24；The one end of the antenna ANT2 through capacitor C9 connection inductance L4, the other end point of the inductance L4
One end of the collector of other connecting triode Q4, resistance R17, the corresponding output of other end connection MCU module of the resistance R17
End, and the other end of resistance R17 be separately connected through resistance R8 the emitter of triode Q4, one end of inductance L3, capacitor C24 one
End, the base stage of the triode Q4, the other end of inductance L3 are grounded, and the other end connection MCU module of the capacitor C24 is corresponding
Output end.
Preferably, the Bluetooth communication modules include antenna BT-ANT, capacitor C1, inductance L2；The antenna BT-ANT's
One end is separately connected one end of one end of capacitor C1, inductance L2；The other end, the other end of inductance L2 of the antenna BT-ANT is equal
Ground connection, the corresponding input terminal of other end connection MCU module of the capacitor C1.
Preferably, the wired input module includes input interface J1, capacitor C20, capacitor C21；The input interface J1
The first pin ground connection, the second pin of the input interface J1, third pin are respectively through capacitor C20, capacitor C21 connection MCU
The corresponding input terminal of module, one end of the 4th pin connection resistance R15 of the input interface J1.
Preferably, the MCU module includes MCU chip U1 and its MCU chip U1 peripheral circuit；The MCU chip U1's
Model is set as AC6905A, one end of the 5th pin connection capacitor C14 of the MCU chip U1, and the 6th of the MCU chip U1 the
Pin, the 7th pin are separately connected one end of one end of capacitor C20, capacitor C21, the 8th pin difference of the MCU chip U1
Be correspondingly connected with one end of resistance R8, one end of resistance R17, resistance R24 one end, the MCU chip U1 the tenth pin connection
One end of capacitor C24, the 12nd pin of the MCU chip U1 be separately connected one end of resistance R1, resistance R6 one end, shine
One end of diode D1, the 13rd pin, the 14th pin, the 15th pin of the MCU chip U1 are connected respectively card
The 5th pin, third pin, the 7th pin of slot TF1, one end of the 16th pin connection resistance R5 of the MCU chip U1,
The source electrode of the 18th pin connection field-effect tube Q3 of the MCU chip U1, the 21st pin connection of the MCU chip U1
One end of capacitor C1.
The utility model compared with prior art, has the advantages that
The utility model controls FM transmission module by MCU module, realizes and the hoot device with FM function
Between connection；By Bluetooth communication modules, wired input module, TF card input module, bluetooth, wireline audio, TF are realized
The input of a variety of audibles such as card；By the cooperation of speech reception module, Bluetooth communication modules, FM transmission module, to make
When connecting cell phone apparatus, there is voice call function；Therefore, the utility model have can FM signal transmission, a variety of audios it is defeated
Enter mode, the beneficial effect of voice communication.
Detailed description of the invention
Fig. 1 is the frame principle figure of the utility model；
Fig. 2 is the circuit diagram of the utility model Power Entry Module, wired input module；
Fig. 3 be the utility model key module, speech reception module, TF card input module circuit diagram；
Fig. 4 is the circuit diagram of the utility model MCU module, Bluetooth communication modules, FM transmission module.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Shown in please referring to Fig.1 to Fig.4, the utility model is provided the following technical solutions: a kind of vehicle mounted MP 3 circuit, including electricity
Source input module 1, key module 2, MCU module 3, speech reception module 4, TF card input module 5, FM transmission module 6, bluetooth pass
Defeated module 7, wired input module 8, external hoot device；The output end and key module 2 of the Power Entry Module 1
Input terminal be electrically connected, the output end of the key module 2, the output end of speech reception module 4, TF card input module 5
Output end, the input terminal that the output end of Bluetooth communication modules 7 is answered with MCU module 3 respectively are electrically connected, the MCU module 3
Output end and the input terminal of FM transmission module 6 are electrically connected, and the FM transmission module 6 outputs signal to external automobile audio and sets
It is standby to play.
The Power Entry Module 1 include USB interface, lithium battery, diode D4, triode Q1, resistance R9, resistance R10,
Resistance R11, resistance R12, light emitting diode D2；The positive terminal of the USB interface is separately connected one end of diode D4, triode
The emitter of Q1, the other end of the diode D4 are separately connected the input of the positive terminal, key module 2 of lithium battery through resistance R9
End, the negative pole end of the lithium battery, the negative pole end of USB interface are grounded, and the positive terminal of the lithium battery is through resistance R10 and three poles
The base stage of pipe Q1 connects, and the collector of the triode Q1 is through one end of resistance R11 connection light-emitting diodes D2 pipe, and light-emitting diodes
Emitter of the one end of pipe D2 through resistance R12 connecting triode Q1, the other end ground connection of the light emitting diode D2.
The key module 2 includes on/off circuit 21, button inputting circuits 22；The on/off circuit 21 is imitated including field
It should pipe Q3, triode Q2, diode D3, resistance R22, resistance R23, resistance R24；The model of the diode D2 is set as
The positive terminal of the drain electrode connection lithium battery of BAT54C, the field-effect tube Q3, and the drain electrode of field-effect tube Q3 is connected through resistance R22
The source electrode of the grid of field-effect tube Q3, the field-effect tube Q3 connects the corresponding input terminal of MCU module 3, the triode Q2's
Collector is through the corresponding output end of resistance R24 connection MCU module, and the base stage of the triode Q2 is through resistance R23 connecting triode
The collector of Q2, and the base earth of triode Q2, the emitter of the triode Q2 be separately connected the grid of field-effect tube Q3,
The first pin of diode D3, the second pin of the diode D3 connects the corresponding output end of button inputting circuits 22, described
The third pin of diode D3 connects the corresponding input terminal of button inputting circuits 22, the corresponding output of the button inputting circuits 22
The end connection corresponding input terminal of MCU module 3.
The button inputting circuits 22 include key K1, key K2, key K3, key K4, light emitting diode D1, resistance
R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R15, resistance R16；One end connection diode D3's of the key K1
Third pin, key K1 the other end ground connection, one end of the key K2, one end of key K3, key K4 one end be grounded,
The other end of the key K2, the other end of key K3, key K4 the other end respectively through corresponding resistance R2, resistance R3, electricity
After hindering R4, it is all connected with one end of resistance R5, and one end of resistance R5 is separately connected the corresponding input terminal of MCU module 3, resistance R1
One end, one end of resistance R15, resistance R16 one end, the other end of the resistance R5 is through light emitting diode D1 connection MCU module 3
Corresponding output end, the other end of the resistance R1 connect the corresponding output end of MCU module 3, and the other end of the resistance R15 connects
It is connected to the output end of line input module 8, the second pin of the other end connection diode D3 of the resistance R16.
The speech reception module 4 includes microphone, resistance R8, capacitor C14；One end of the microphone is separately connected electricity
One end of R8, one end of capacitor C14, the other end ground connection of the microphone are hindered, the other end of the resistance R8 connects MCU mould
The other end of the corresponding output end of block 3, the capacitor C14 connects the corresponding input terminal of MCU module 3.
The TF card input module 5 includes card slot TF1, resistance R6, resistance R7；The third pin of the card slot TF1, the 5th
Pin, the 7th pin are separately connected the corresponding input terminal of MCU module 3, and the 5th pin of the card slot TF1 is also connected through resistance R7
The 9th pin of card slot TF1, the 4th pin of the card slot TF1 are described through the corresponding output end of resistance R6 connection MCU module 3
The 6th pin, the 11st pin of card slot TF1 is grounded.
The FM transmission module 6 includes antenna ANT2, inductance L3, inductance L4, triode Q4, resistance R17, resistance R18, electricity
Hold C9, capacitor C24；The one end of the antenna ANT2 through capacitor C9 connection inductance L4, the other end of the inductance L4 are separately connected
One end of the collector of triode Q4, resistance R17, the other end of the resistance R17 connect the corresponding output end of MCU module 3, and
The other end of resistance R17 is separately connected one end of the emitter of triode Q4, one end of inductance L3, capacitor C24, institute through resistance R8
The other end of the base stage, inductance L3 of stating triode Q4 is grounded, and the other end connection MCU module 3 of the capacitor C24 is corresponding defeated
Outlet.
The Bluetooth communication modules 7 include antenna BT-ANT, capacitor C1, inductance L2；One end of the antenna BT-ANT point
Not Lian Jie one end of capacitor C1, inductance L2 one end；The other end of the antenna BT-ANT, the other end of inductance L2 are grounded,
The other end of the capacitor C1 connects the corresponding input terminal of MCU module 3.
The wired input module 8 includes input interface J1, capacitor C20, capacitor C21；The first of the input interface J1
Pin ground connection, the second pin of the input interface J1, third pin are respectively through capacitor C20, capacitor C21 connection MCU module to 3
The input terminal answered, one end of the 4th pin connection resistance R15 of the input interface J1.
The MCU module 3 includes MCU chip U1 and its MCU chip U1 peripheral circuit；The model of the MCU chip U1 is set
For AC6905A, one end of the 5th pin connection capacitor C14 of the MCU chip U1, the 6th pin of the MCU chip U1, the
Seven pins are separately connected one end of one end of capacitor C20, capacitor C21, and the 8th pin of the MCU chip U1 is connected respectively
One end of resistance R8, one end of resistance R17, resistance R24 one end, the tenth pin connection capacitor C24 of the MCU chip U1
12nd pin of one end, the MCU chip U1 is separately connected one end of resistance R1, one end of resistance R6, light emitting diode D1
One end, the 13rd pin, the 14th pin, the 15th pin of the MCU chip U1 be connected respectively the of card slot TF1
Five pins, third pin, the 7th pin, one end of the 16th pin connection resistance R5 of the MCU chip U1, the MCU core
The source electrode of the 18th pin connection field-effect tube Q3 of piece U1, the 21st pin connection capacitor C1's of the MCU chip U1
One end.
Embodiment 1:
Working principle of the utility model is:
Plant-grid connection module 1 is started by key module 2, to provide required working power, MCU mould for MCU module 3
Block 3 receives TF card input module 5, Bluetooth communication modules 7, audio-frequency information provided by wired input module 8, passes through key module
The corresponding audio-frequency information output of 2 selections, external hoot device is transferred to through FM transmission module 6, realizes audio-frequency information
It plays；
When connecting smart phone by Bluetooth communication modules 7, MCU module 3 selects the information output of Bluetooth communication modules
External hoot device plays out, and received information after MCU module 3, is passed through Bluetooth transmission by speech reception module 4
Module 7 is transferred to smart phone, to realize voice communication.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (10)
1. a kind of vehicle mounted MP 3 circuit, which is characterized in that including Power Entry Module, key module, MCU module, phonetic incepting mould
Block, TF card input module, FM transmission module, Bluetooth communication modules, wired input module, external hoot device；It is described
The output end of Power Entry Module and the input terminal of key module are electrically connected, output end, the phonetic incepting of the key module
The output end input corresponding with MCU module respectively of the output end of module, the output end of TF card input module, Bluetooth communication modules
End is electrically connected, and the input terminal of the output end of the MCU module and FM transmission module is electrically connected, the FM transmission module it is defeated
Outlet outputs signal to external hoot device and plays.
2. vehicle mounted MP 3 circuit according to claim 1, it is characterised in that: the Power Entry Module include USB interface,
Lithium battery, diode D4, triode Q1, resistance R9, resistance R10, resistance R11, resistance R12, light emitting diode D2；The USB
The positive terminal of interface is separately connected the emitter of one end of diode D4, triode Q1, and the other end of the diode D4 is through electricity
Resistance R9 is separately connected the input terminal of the positive terminal of lithium battery, key module, the cathode of the negative pole end of the lithium battery, USB interface
End is grounded, and the positive terminal of the lithium battery is connect through resistance R10 with the base stage of triode Q1, the collector of the triode Q1
One end through resistance R11 connection light-emitting diodes D2 pipe, and hair of the one end of light emitting diode D2 through resistance R12 connecting triode Q1
Emitter-base bandgap grading, the other end ground connection of the light emitting diode D2.
3. vehicle mounted MP 3 circuit according to claim 2, it is characterised in that: the key module include on/off circuit, by
Key input circuit；The on/off circuit includes field-effect tube Q3, triode Q2, diode D3, resistance R22, resistance R23, electricity
Hinder R24；The model of the diode D2 is set as BAT54C, and the drain electrode of the field-effect tube Q3 connects the positive terminal of lithium battery, and
The source electrode of grid of the drain electrode of field-effect tube Q3 through resistance R22 connection field-effect tube Q3, the field-effect tube Q3 connects MCU module
Corresponding input terminal, the collector of the triode Q2 is through the corresponding output end of resistance R24 connection MCU module, the triode
Collector of the base stage of Q2 through resistance R23 connecting triode Q2, and the base earth of triode Q2, the transmitting of the triode Q2
Pole is separately connected the first pin of the grid of field-effect tube Q3, diode D3, and the second pin of the diode D3 connects key
The corresponding output end of input circuit, the corresponding input terminal of third pin connection button inputting circuits of the diode D3 are described
The corresponding input terminal of the corresponding output end connection MCU module of button inputting circuits.
4. vehicle mounted MP 3 circuit according to claim 3, it is characterised in that: the button inputting circuits include key K1, by
Key K2, key K3, key K4, light emitting diode D1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R15, electricity
Hinder R16；The third pin of one end connection diode D3 of the key K1, the other end ground connection of key K1, the key K2's
One end, one end of key K3, key K4 one end be grounded, the other end of the key K2, the other end of key K3, key K4
The other end respectively after corresponding resistance R2, resistance R3, resistance R4, be all connected with one end of resistance R5, and one end of resistance R5
It is separately connected one end of the corresponding input terminal of MCU module, one end of resistance R1, one end of resistance R15, resistance R16, the resistance
The other end of R5 connects MCU module through the corresponding output end of light emitting diode D1 connection MCU module, the other end of the resistance R1
Corresponding output end, the other end of the resistance R15 connect the output end of wired input module, the other end of the resistance R16
Connect the second pin of diode D3.
5. vehicle mounted MP 3 circuit according to claim 4, it is characterised in that: the speech reception module includes microphone, electricity
Hinder R8, capacitor C14；One end of the microphone is separately connected one end of one end of resistance R8, capacitor C14, the microphone
Other end ground connection, the corresponding output end of other end connection MCU module of the resistance R8, the other end of the capacitor C14 connects
Connect the corresponding input terminal of MCU module.
6. vehicle mounted MP 3 circuit according to claim 5, it is characterised in that: the TF card input module include card slot TF1,
Resistance R6, resistance R7；The third pin of the card slot TF1, the 5th pin, that the 7th pin is separately connected MCU module is corresponding defeated
Enter end, nineth pin of the 5th pin of the card slot TF1 also through resistance R7 connection card slot TF1, the 4th of the card slot TF1 draws
Foot is grounded through the corresponding output end of resistance R6 connection MCU module, the 6th pin, the 11st pin of the card slot TF1.
7. vehicle mounted MP 3 circuit according to claim 6, it is characterised in that: the FM transmission module includes antenna ANT2, electricity
Feel L3, inductance L4, triode Q4, resistance R17, resistance R18, capacitor C9, capacitor C24；The antenna ANT2 is connected through capacitor C9
The other end of one end of inductance L4, the inductance L4 is separately connected one end of the collector of triode Q4, resistance R17, the electricity
The corresponding output end of other end connection MCU module of R17 is hindered, and the other end of resistance R17 is separately connected triode through resistance R8
The emitter of Q4, one end of inductance L3, capacitor C24 one end, the base stage of the triode Q4, the other end of inductance L3 connect
Ground, the corresponding output end of other end connection MCU module of the capacitor C24.
8. vehicle mounted MP 3 circuit according to claim 7, it is characterised in that: the Bluetooth communication modules include antenna BT-
ANT, capacitor C1, inductance L2；One end of the antenna BT-ANT is separately connected one end of one end of capacitor C1, inductance L2；It is described
The other end of antenna BT-ANT, the other end of inductance L2 are grounded, and the other end connection MCU module of the capacitor C1 is corresponding defeated
Enter end.
9. vehicle mounted MP 3 circuit according to claim 8, it is characterised in that: the wired input module includes input interface
J1, capacitor C20, capacitor C21；The first pin of the input interface J1 is grounded, second pin, the third of the input interface J1
Respectively through capacitor C20, the corresponding input terminal of capacitor C21 connection MCU module, the 4th pin of the input interface J1 connects pin
One end of resistance R15.
10. vehicle mounted MP 3 circuit according to claim 9, it is characterised in that: the MCU module include MCU chip U1 and its
MCU chip U1 peripheral circuit；The model of the MCU chip U1 is set as AC6905A, the 5th pin connection of the MCU chip U1
One end of capacitor C14, the 6th pin, the 7th pin of the MCU chip U1 are connected respectively one end of capacitor C20, capacitor
One end of C21, the 8th pin of the MCU chip U1 are separately connected one end of resistance R8, one end of resistance R17, resistance R24
One end, one end of the tenth pin connection capacitor C24 of the MCU chip U1, the 12nd pin of the MCU chip U1 connect respectively
One end of connecting resistance R1, one end of resistance R6, light emitting diode D1 one end, the 13rd pin of the MCU chip U1, the tenth
Four pins, the 15th pin are connected respectively the 5th pin, third pin, the 7th pin of card slot TF1, the MCU chip
One end of the 16th pin connection resistance R5 of U1, the source electrode of the 18th pin connection field-effect tube Q3 of the MCU chip U1,
One end of the 21st pin connection capacitor C1 of the MCU chip U1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822277477.0U CN209320883U (en) | 2018-12-29 | 2018-12-29 | A kind of vehicle mounted MP 3 circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822277477.0U CN209320883U (en) | 2018-12-29 | 2018-12-29 | A kind of vehicle mounted MP 3 circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209320883U true CN209320883U (en) | 2019-08-30 |
Family
ID=67730325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822277477.0U Expired - Fee Related CN209320883U (en) | 2018-12-29 | 2018-12-29 | A kind of vehicle mounted MP 3 circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209320883U (en) |
-
2018
- 2018-12-29 CN CN201822277477.0U patent/CN209320883U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204408593U (en) | A kind of bluetooth earphone that can be changed into wired earphone | |
| CN203289499U (en) | Multi-functional mobile phone protective sleeve | |
| CN203368084U (en) | Multifunctional intelligent charging device | |
| CN205336513U (en) | Outdoor bluetooth sound's circuit | |
| CN209320883U (en) | A kind of vehicle mounted MP 3 circuit | |
| CN205812361U (en) | A kind of multifunctional sound box | |
| CN209845221U (en) | Multifunctional Bluetooth sound equipment | |
| CN204538756U (en) | A kind of embedded hand casing with charge function | |
| CN207652629U (en) | A kind of intelligent radio microphone | |
| CN207720371U (en) | Bluetooth headset based on power line communication | |
| CN205812360U (en) | A kind of Multifunctional blue tooth loudspeaker box | |
| CN210840009U (en) | Take wireless bluetooth headset charging seat of in-ear touch of portable function of charging | |
| CN210444040U (en) | Cartoon is aerifyd and is taken 12V multifunctional battery case | |
| CN208657022U (en) | A kind of novel Bluetooth earphone | |
| CN105872889A (en) | Mobile sound box control circuit and mobile sound box | |
| CN205902043U (en) | Bluetooth sound that can give out light | |
| CN210745535U (en) | Outdoor bluetooth sound with plug-in function of charging | |
| CN206100096U (en) | Lid behind multifunctional mobile phone and connection fittings thereof | |
| CN105516852A (en) | Bluetooth sound box | |
| CN211556343U (en) | Voice socket | |
| CN201063799Y (en) | Vehicle-mounted telephone | |
| CN204131672U (en) | Multifunctional ball-shaped audio amplifier | |
| CN205160726U (en) | Bluetooth player | |
| CN216086190U (en) | Battery management system with voice interaction function | |
| CN204291279U (en) | Realize the hand miaow that mobile phone remote intercommunication, sound control and load are charged |
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: 20190830 Termination date: 20211229 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |