CN204632339U - A kind of high-power audio playing circuit and audio playing apparatus - Google Patents
A kind of high-power audio playing circuit and audio playing apparatus Download PDFInfo
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- CN204632339U CN204632339U CN201520092326.1U CN201520092326U CN204632339U CN 204632339 U CN204632339 U CN 204632339U CN 201520092326 U CN201520092326 U CN 201520092326U CN 204632339 U CN204632339 U CN 204632339U
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- 238000006243 chemical reaction Methods 0.000 claims description 31
- 238000005070 sampling Methods 0.000 claims description 9
- 230000000087 stabilizing Effects 0.000 claims description 9
- WHXSMMKQMYFTQS-UHFFFAOYSA-N lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
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- 238000004458 analytical method Methods 0.000 abstract description 9
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- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 101710005265 pgdP Proteins 0.000 description 2
- 101710005262 GND1 Proteins 0.000 description 1
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Abstract
The utility model provides a kind of high-power audio playing circuit and audio playing apparatus, relates to electric charging technique field.This circuit comprises: for accessing the first galvanic power input interface module of external power source input; Be connected with the output terminal of power supply interface module, after the first direct current is boosted, export the second galvanic switching mode boost module; Be connected with the output terminal of switching mode boost module, for exporting the switching mode charging module of charging current according to the second direct current; Being connected with the output terminal of switching mode charging module, utilizing charging current to charge for connecing, and export the power storage module of supply current when charge capacity reaches threshold value; Be connected for the power amplifier module utilizing supply current to carry out audio frequency broadcasting with the output terminal of power storage module.The small area analysis that the utility model can make external power source provide also is well positioned to meet the charge requirement of high-power audio equipment, and can make high-power audio equipment that small area analysis also can be utilized to charge to carry out audio frequency broadcasting.
Description
Technical field
The utility model belongs to electric charging technique field, particularly relates to a kind of high-power audio playing circuit.
Background technology
Along with the development of science and technology, audio-frequence player device becomes the necessity of the cultural life of people gradually.At present, in some audio-frequence player devices, power amplifier module, audio decoder module and power module is all integrated with.These audio-frequence player devices are generally all provided with power input interface, can be charge in batteries in power module by this power input interface, and be that audio decoder module and power amplifier module are powered by accumulator, form an independently audio-frequence player device.
At present, the electric current that some audio-frequence player devices on market mainly adopt the USB interface on computer to export is charge in batteries, and USB interface can only provide the direct current of 5V voltage, the charge requirement of the audio-frequence player device being built-in with single-unit accumulator can only be met, the charge requirement of the high-power audio playback equipment being built-in with more piece accumulator cannot be met, charging limit, high-power audio playing device limit more can not be made to carry out audio frequency broadcasting.
Utility model content
The purpose of this utility model is to provide a kind of high-power audio playing circuit and audio playing apparatus, the direct current being intended to solve 5V voltage in prior art cannot meet the charge requirement of high-power audio playback equipment, and charging limit, high-power audio playing device limit more can not be made to carry out the problem of audio frequency broadcasting.
It is construct a kind of high-power audio playing circuit, comprising that the utility model solves the technical scheme that its technical matters adopts:
For accessing the first galvanic power input interface module of external power source input;
Being connected with the output terminal of described power supply interface module, for receiving described first direct current, and exporting the second galvanic switching mode boost module after described first direct current is boosted;
Being connected with the output terminal of described switching mode boost module, for receiving described second direct current, and exporting the switching mode charging module of charging current according to described second direct current;
Being connected with the output terminal of described switching mode charging module, for receiving described charging current, utilizing described charging current to charge, and export the power storage module of supply current when charge capacity reaches threshold value;
Be connected for receiving described supply current with the output terminal of described power storage module, and utilize described supply current to carry out the power amplifier module of audio frequency broadcasting.
In high-power audio playing circuit described in the utility model, described power storage module is the battery pack be made up of two to three joint lithium batteries, the positive pole of described battery pack is connected to the output terminal of described switching mode charging module and the input end of described power amplifier module, the minus earth of described battery pack.
In high-power audio playing circuit described in the utility model, also comprise and being connected with described switching mode charging module, for the charging current adjustment module of the charging current that regulates described switching mode charging module to export according to the charge capacity in described second direct current and described power storage module.
In high-power audio playing circuit described in the utility model, described charging current adjustment module comprises a software interface, and the software program stored in described software interface for the charging current regulating described switching mode charging module to export according to the charge capacity in described second direct current and described power storage module, the software interface of described charging current adjustment module is connected with described switching mode charging module.
In high-power audio playing circuit described in the utility model, also comprise and being connected with described switching mode charging module and described power storage module, for the charging current adjustment module of the charging current that regulates described switching mode charging module to export according to the charge capacity in described second direct current and described power storage module.
In high-power audio playing circuit described in the utility model, described charging current adjustment module comprises current sense resistor, the first end of described current sense resistor is connected to one end of described switching mode charging module, and the second end of described current sense resistor is connected to the positive pole of battery pack in the output terminal of described switching mode charging module and described power storage module.
In high-power audio playing circuit described in the utility model, described switching mode charging module is made up of charging chip, state-of-charge indicator, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the 6th resistance, thermistor, the 4th inductance and voltage stabilizing diode;
Described charging chip comprises voltage input end, voltage output end, compensation end, Thermal feedback end, current sense resistor sampling end, charging end, charged state indication end and earth terminal; the voltage input end of described charging chip and the first end of described 5th electric capacity connect the output terminal that the input end forming described switching mode charging module is connected to described switching mode boost module altogether, second end ground connection of described 5th electric capacity, the compensation end of described charging chip is by the 6th electric capacity and the 6th resistance eutral grounding, the voltage output end of described charging chip is connected to the current sense resistor sampling end of described charging chip by the 4th inductance, and the common contact of the current sense resistor sampling end of described 4th inductance and described charging chip is connected to the first end of described current sense resistor, the voltage output end of described switching mode charging module is also connected to the negative electrode of described voltage stabilizing diode, the plus earth of described voltage stabilizing diode, the charging end of described switching mode charging module is by described 7th capacity earth, and the output terminal that the common contact of the charging end of described switching mode charging module and described 7th electric capacity forms described switching mode charging module is connected to the second end of described current sense resistor, the positive pole of battery pack and the input end of described power amplifier module in described power storage module, the charged state indication end of described charging chip is connected to described state-of-charge indicator, the Thermal feedback end of described switching mode charging module is connected to described thermistor, the earth terminal ground connection of described charging chip.
In high-power audio playing circuit described in the utility model, described power input interface module is made up of USB interface, the first inductance, the second inductance and the first electric capacity; The power supply terminal of described USB interface is connected to one end of described first inductance, the other end of described first inductance is by described first capacity earth, and the output terminal that the common contact of described first inductance and described first electric capacity forms described power input interface module is connected to the input end of described switching mode boost module, the ground terminal of described USB interface is by the second inductance ground connection.
In high-power audio playing circuit described in the utility model, described switching mode boost module is made up of voltage conversion chip, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 3rd inductance, the second electric capacity, the 3rd electric capacity, the 4th electric capacity and the first diode;
Described voltage conversion chip comprises voltage input end, voltage output end, frequency of operation selecting side, Enable Pin, feedback end, electric capacity terminals, compensates end and earth terminal, the voltage input end of described voltage conversion chip, frequency of operation selecting side, the first end of described first resistance and the first end of described 3rd inductance connect the output terminal that the input end forming described switching mode boost module is connected to described power input interface module jointly altogether, second end of described first resistance is connected to the Enable Pin of described voltage conversion chip, and also by the second resistance eutral grounding, second end of described 3rd inductance is connected to the voltage output end of described voltage conversion chip and the anode of described first diode, the negative electrode of described first diode is respectively by described 4th capacity earth, by described 4th resistance and described 5th resistance eutral grounding, and the output terminal that the common contact of described first diode and described 4th resistance and described 4th electric capacity forms described switching mode boost module is connected to the input end of described switching mode charging module, the feedback end of described voltage conversion chip is connected to the common contact of described 4th resistance and described 5th resistance, the compensation end of described voltage conversion chip is by the 3rd electric capacity and the 3rd resistance eutral grounding, the electric capacity terminals of described voltage conversion chip are by described second capacity earth, the earth terminal ground connection of described voltage conversion chip.
In high-power audio playing circuit described in the utility model, described charging chip is EUP8209 chip, and described voltage conversion chip is MP1542 chip.
The utility model also provides a kind of audio playing apparatus, comprises housing, and the inside of the housing of described audio playing apparatus comprises above-mentioned high-power audio playing circuit.
The high-power audio playing circuit that enforcement the utility model provides and audio playing apparatus have following beneficial effect:
The high power acoustics control circuit of the utility model design, first direct current inputted by external power source by switching mode boost module of employing carries out boost conversion and exports the second direct current, exports charging current by switching mode charging module according to the second direct current; Utilize charging current to charge by battery module, and export supply current when charge capacity reaches threshold value; This supply current is utilized to carry out audio frequency broadcasting by power amplifier module, thus the small area analysis making external power source provide also is well positioned to meet the charge requirement of high-power audio equipment, and make high-power audio equipment that small area analysis also can be utilized to charge to carry out audio frequency broadcasting.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the high-power audio playing circuit that the utility model embodiment 1 provides;
Fig. 2 is the structured flowchart of the high-power audio playing circuit that the utility model embodiment 2 provides;
Fig. 3 is the structured flowchart of the high-power audio playing circuit that the utility model embodiment 3 provides;
Fig. 4 is power storage module and the schematic diagram of annexation between switching mode charging module, charging current adjustment module and power amplifier module in embodiment 3;
Fig. 5 is the specific implementation circuit diagram of the high-power audio playing circuit that the utility model embodiment 3 provides.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
Fig. 1 is the structured flowchart of the high-power audio playing circuit that the utility model embodiment provides.Shown in Figure 1, the high-power audio playing circuit that the utility model embodiment provides comprises: for accessing the first galvanic power input interface module 1 of external power source input; Being connected with the output terminal of power input interface module 1, for receiving the first direct current, and exporting the second galvanic switching mode boost module 2 after the first direct current is boosted; Being connected with the output terminal of switching mode boost module 2, for receiving the second direct current, and exporting the switching mode charging module 3 of charging current according to the second direct current; Being connected with the output terminal of switching mode charging module 3, for receiving charging current, utilizing charging current to charge, and export the power storage module 4 of supply current when charge capacity reaches threshold value; Being connected with the output terminal of power storage module 4, for receiving supply current, and utilizing supply current to carry out the power amplifier module 5 of audio frequency broadcasting.
The direct current of the first direct current can be voltage be 5V in the present embodiment, it can be accessed by the power supply interface of data line from external unit by power input interface module 1, such as: can access the first direct current by USB data line from the USB interface of computing machine; The direct current of the second direct current can be voltage be 9V or 14V; Charging current is after the drainage process of switching mode charging module 3, and voltage is slightly smaller than the second direct current, and certainly, switching mode charging module 3 also can not do any process to the second direct current, directly exports the second direct current as charging current.
In the present embodiment, power storage module 4 is the battery pack BATT1 be made up of two to three joint lithium batteries, and the positive pole of battery pack BATT1 is connected to the output terminal of switching mode charging module 3 and the input end of power amplifier module 5, the minus earth of battery pack BATT1.
The high-power audio playing circuit designed in the present embodiment, power storage module 4 can be made to carry out electric power storage in the mode of cistern, and automatically outwards export supply current when charge capacity reaches threshold value, thus the small area analysis making external power source provide also is well positioned to meet the charge requirement of high-power audio equipment, and make high-power audio equipment that small area analysis also can be utilized to charge to carry out audio frequency broadcasting.
Fig. 2 is the structured flowchart of the high-power audio playing circuit that the utility model embodiment 2 provides.Shown in Figure 2, also comprise relative to the high-power audio playing circuit in embodiment 1 the present embodiment and being connected with switching mode charging module 3, for the charging current adjustment module 6 of the charging current that the charge capacity by-pass cock type charging module 3 in the second direct current of exporting according to switching mode boost module 2 and power storage module 4 exports.
In the present embodiment, charging current adjustment module 6 comprises a software interface, and the software program stored in software interface for the charging current exported according to the charge capacity by-pass cock type charging module 3 in the second direct current and power storage module 4, the software interface of charging current adjustment module 6 is connected with switching mode charging module 3.
Here it should be noted that, switching mode charging module 3 in the present embodiment charging process in can automatically detector switch type boost module 2 input the second galvanic size and power storage module 4 in charge capacity, and utilize the software program that stores in software interface in charging current adjustment module 6 automatically to regulate the size of charging current according to above-mentioned the second direct current of detecting and charge capacity, make this charging current improve charge efficiency further while the charge requirement meeting power storage module 4 and power amplifier module 5.
Fig. 3 is the structured flowchart of the high-power audio playing circuit that the utility model embodiment 3 provides.Shown in Figure 3, also comprise relative to the high-power audio playing circuit in embodiment 1 the present embodiment and being connected with switching mode charging module 3 and power storage module 4, for the charging current adjustment module 6 of the charging current that the charge capacity by-pass cock type charging module 3 in the second direct current of exporting according to switching mode boost module 2 and power storage module 4 exports.
In the present embodiment, this charging current adjustment module 6 comprises current sense resistor Rsense, the first end of current sense resistor Rsense is connected to one end of switching mode charging module 3, and second end of current sense resistor Rsense is connected to the positive pole of battery pack in the output terminal of switching mode charging module 3 and power storage module 4.
The current sense resistor Rsense adopted in the present embodiment is as charging current adjustment module 6, the charging current that can export according to the charge capacity by-pass cock type charging module 3 in the second direct current and power storage module 4 equally, makes this charging current further increase charge efficiency while the charge requirement meeting power storage module 4 and power amplifier module 5.
Fig. 4 is power storage module and the schematic diagram of annexation between switching mode charging module, charging current adjustment module and power amplifier module in embodiment 3.
Shown in Figure 4, switching mode charging module 3 is made up of charging chip U2, state-of-charge indicator CHRG1, the 5th electric capacity C5, the 6th electric capacity C6, the 7th electric capacity C7, the 6th resistance R6, thermistor R9, the 4th inductance L 4 and voltage stabilizing diode D2 in the present embodiment; Charging chip U2 comprises voltage input end Vcc, voltage output end SW2, compensates end COMP2, Thermal feedback end NTC, current sense resistor sampling end SENSE, charging end BAT, charged state indication end CHRG and earth terminal GND2; the voltage input end of charging chip U2 and the first end of the 5th electric capacity C5 connect the output terminal that the input end forming switching mode charging module 3 is connected to switching mode boost module 2 altogether, the second end ground connection of the 5th electric capacity C5, the compensation end COMP2 of charging chip U2 is by the 6th electric capacity C6 and the 6th resistance R6 ground connection, the voltage output end Vcc of charging chip U2 is connected to the current sense resistor sampling end SENSE of charging chip U2 by the 4th inductance L 4, and the 4th inductance L 4 and the common contact of the current sense resistor sampling end SENSE of charging chip U2 are connected to the first end of current sense resistor Rsense, the voltage output end SW2 of switching mode charging module 3 is also connected to the negative electrode of voltage stabilizing diode D2, the plus earth of voltage stabilizing diode D2, the charging end BAT of switching mode charging module 3 is by the 7th electric capacity C7 ground connection, and the output terminal that the common contact of the charging end BAT of switching mode charging module 3 and the 7th electric capacity C7 forms switching mode charging module 3 is connected to second end of current sense resistor Rsense, the positive pole of battery pack BATT1 and the input end of power amplifier module 5 in power storage module 4, the charged state indication end CHRG of charging chip U2 is connected to state-of-charge indicator CHRG1, the Thermal feedback end NTC of switching mode charging module 3 is connected to thermistor R9, the earth terminal GND2 ground connection of charging chip U2.When specific implementation, charging chip U2 can be but be not limited to EUP8209 chip.
Fig. 5 is the specific implementation circuit diagram of the high-power audio playing circuit that the utility model embodiment 3 provides.
Shown in Figure 5, when specific implementation, current sense resistor also can be made up of the 7th resistance R7 and the 8th resistance R8, now, the positive pole of battery pack BATT1 in the output terminal of switching mode charging module 3 and power storage module 4 is connected to after second end of the second end and the 8th resistance R8 that are connected to switching mode charging module the 3, seven resistance R7 after the first end of the 7th resistance R7 and the first end of the 8th resistance R8 connect altogether connects altogether.
Further, shown in Figure 5, when specific implementation, the power input interface module 1 in the present embodiment can be made up of USB interface, the first inductance L 1, second inductance L 2 and the first electric capacity C1; The power supply terminal of USB interface is connected to one end of the first inductance L 1, the other end of the first inductance L 1 is by the first electric capacity C1 ground connection, and the output terminal that the common contact of the first inductance L 1 and the first electric capacity C1 forms power input interface module 1 is connected to the input end of switching mode boost module 2, the ground terminal of USB interface is by the second inductance L 2 ground connection.When needs charge, we can adopt USB line to be coupled together by the power supply interface of the USB interface in power input interface module 1 and external unit, to access the first direct current that external unit provides, and the filtering circuit be made up of the first inductance, the second inductance and the first electric capacity exports switching mode boost module 2 to after its filtering.
Further, shown in Figure 5, when specific implementation, the switching mode boost module 2 in the present embodiment can be made up of voltage conversion chip U1, the first resistance R1, the second resistance R2, the 3rd resistance R3, the 4th resistance R4, the 5th resistance R5, the 3rd inductance L 3, second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4 and the first diode D1, voltage conversion chip U1 comprises voltage input end IN, voltage output end SW2, frequency of operation selecting side FSEL, Enable Pin EN, feedback end FB, electric capacity terminals SS, compensates end COMP1 and earth terminal GND, the voltage input end IN of voltage conversion chip U1, frequency of operation selecting side FSEL, the first end of the first resistance R1 and the first end of the 3rd inductance L 3 connect the output terminal that the input end forming switching mode boost module 2 is connected to power input interface module jointly altogether, second end of the first resistance R1 is connected to the Enable Pin EN of voltage conversion chip U1, and also by the second resistance R2 ground connection, second end of the 3rd inductance L 3 is connected to the voltage output end SW1 of voltage conversion chip U1 and the anode of the first diode D1, the negative electrode of the first diode D1 is respectively by the 4th electric capacity C4 ground connection, by the 4th resistance R4 and the 5th resistance R5 ground connection, and the output terminal that the common contact of the first diode D1 and the 4th resistance R4 and the 4th electric capacity C4 forms switching mode boost module 2 is connected to the input end of switching mode charging module 3, the feedback end FB of voltage conversion chip U1 is connected to the common contact of the 4th resistance R4 and the 5th resistance R5, the compensation end COMP1 of voltage conversion chip U1 is by the 3rd electric capacity C3 and the 3rd resistance R3 ground connection, the electric capacity terminals SS of voltage conversion chip U1 is by the second electric capacity C2 ground connection, the earth terminal GND1 ground connection of voltage conversion chip U1.When specific implementation, this voltage conversion chip exports the second direct current to switching mode charging module 3 after can carrying out boosting process to the first direct current, and the charging current that further guarantee switching mode charging module exports can meet the charge requirement of more piece accumulator.In the present embodiment, this voltage conversion chip U1 can be but be not limited to MP1542 chip.
To sum up, the high-power audio playing circuit that the utility model provides, power storage module 4 can be made to carry out electric power storage in the mode of cistern, and automatically outwards export supply current when charge capacity reaches threshold value, thus the small area analysis making external power source provide also is well positioned to meet the charge requirement of high-power audio equipment, and make high-power audio equipment that small area analysis can be utilized to charge to carry out audio frequency broadcasting.
Another object of the utility model embodiment is also to provide a kind of audio playing apparatus.
The audio playing apparatus that the utility model embodiment provides comprises housing, and the inside of housing comprises any one audio playing circuit in above-described embodiment 1-3.The audio playing apparatus that the present embodiment provides is high-power audio playing device, and its small area analysis that external power source can be utilized to provide by above-mentioned audio playing circuit charges and carries out audio frequency broadcasting.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (10)
1. a high-power audio playing circuit, is characterized in that, comprising:
For accessing the first galvanic power input interface module of external power source input;
Being connected with the output terminal of described power supply interface module, for receiving described first direct current, and exporting the second galvanic switching mode boost module after described first direct current is boosted;
Being connected with the output terminal of described switching mode boost module, for receiving described second direct current, and exporting the switching mode charging module of charging current according to described second direct current;
Being connected with the output terminal of described switching mode charging module, for receiving described charging current, utilizing described charging current to charge, and export the power storage module of supply current when charge capacity reaches threshold value;
Be connected for receiving described supply current with the output terminal of described power storage module, and utilize described supply current to carry out the power amplifier module of audio frequency broadcasting.
2. high-power audio playing circuit as claimed in claim 1, it is characterized in that, described power storage module is the battery pack be made up of two to three joint lithium batteries, the positive pole of described battery pack is connected to the output terminal of described switching mode charging module and the input end of described power amplifier module, the minus earth of described battery pack.
3. high-power audio playing circuit as claimed in claim 2, it is characterized in that, also comprise and being connected with described switching mode charging module, for the charging current adjustment module of the charging current that regulates described switching mode charging module to export according to the charge capacity in described second direct current and described power storage module.
4. high-power audio playing circuit as claimed in claim 3, it is characterized in that, described charging current adjustment module comprises a software interface, and described software interface is connected with described switching mode charging module.
5. high-power audio playing circuit as claimed in claim 2, it is characterized in that, also comprise and being connected with described switching mode charging module and described power storage module, for the charging current adjustment module of the charging current that regulates described switching mode charging module to export according to the charge capacity in described second direct current and described power storage module.
6. high-power audio playing circuit as claimed in claim 5, it is characterized in that, described charging current adjustment module comprises current sense resistor, the first end of described current sense resistor is connected to one end of described switching mode charging module, and the second end of described current sense resistor is connected to the positive pole of battery pack in the output terminal of described switching mode charging module and described power storage module.
7. high-power audio playing circuit as claimed in claim 6, it is characterized in that, described switching mode charging module is made up of charging chip, state-of-charge indicator, the 5th electric capacity, the 6th electric capacity, the 7th electric capacity, the 6th resistance, thermistor, the 4th inductance and voltage stabilizing diode;
Described charging chip comprises voltage input end, voltage output end, compensation end, Thermal feedback end, current sense resistor sampling end, charging end, charged state indication end and earth terminal; the voltage input end of described charging chip and the first end of described 5th electric capacity connect the output terminal that the input end forming described switching mode charging module is connected to described switching mode boost module altogether, second end ground connection of described 5th electric capacity, the compensation end of described charging chip is by the 6th electric capacity and the 6th resistance eutral grounding, the voltage output end of described charging chip is connected to the current sense resistor sampling end of described charging chip by the 4th inductance, and the common contact of the current sense resistor sampling end of described 4th inductance and described charging chip is connected to the first end of described current sense resistor, the voltage output end of described switching mode charging module is also connected to the negative electrode of described voltage stabilizing diode, the plus earth of described voltage stabilizing diode, the charging end of described switching mode charging module is by described 7th capacity earth, and the output terminal that the common contact of the charging end of described switching mode charging module and described 7th electric capacity forms described switching mode charging module is connected to the second end of described current sense resistor, the positive pole of battery pack and the input end of described power amplifier module in described power storage module, the charged state indication end of described charging chip is connected to described state-of-charge indicator, the Thermal feedback end of described switching mode charging module is connected to described thermistor, the earth terminal ground connection of described charging chip.
8. the high-power audio playing circuit as described in claim 4 or 7, is characterized in that, described power input interface module is made up of USB interface, the first inductance, the second inductance and the first electric capacity; The power supply terminal of described USB interface is connected to one end of described first inductance, the other end of described first inductance is by described first capacity earth, and the output terminal that the common contact of described first inductance and described first electric capacity forms described power input interface module is connected to the input end of described switching mode boost module, the ground terminal of described USB interface is by the second inductance ground connection.
9. high-power audio playing circuit as claimed in claim 8, it is characterized in that, described switching mode boost module is made up of voltage conversion chip, the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the 3rd inductance, the second electric capacity, the 3rd electric capacity, the 4th electric capacity and the first diode;
Described voltage conversion chip comprises voltage input end, voltage output end, frequency of operation selecting side, Enable Pin, feedback end, electric capacity terminals, compensates end and earth terminal, the voltage input end of described voltage conversion chip, frequency of operation selecting side, the first end of described first resistance and the first end of described 3rd inductance connect the output terminal that the input end forming described switching mode boost module is connected to described power input interface module jointly altogether, second end of described first resistance is connected to the Enable Pin of described voltage conversion chip, and also by the second resistance eutral grounding, second end of described 3rd inductance is connected to the voltage output end of described voltage conversion chip and the anode of described first diode, the negative electrode of described first diode is respectively by described 4th capacity earth, by described 4th resistance and described 5th resistance eutral grounding, and the output terminal that the common contact of described first diode and described 4th resistance and described 4th electric capacity forms described switching mode boost module is connected to the input end of described switching mode charging module, the feedback end of described voltage conversion chip is connected to the common contact of described 4th resistance and described 5th resistance, the compensation end of described voltage conversion chip is by the 3rd electric capacity and the 3rd resistance eutral grounding, the electric capacity terminals of described voltage conversion chip are by described second capacity earth, the earth terminal ground connection of described voltage conversion chip.
10. an audio playing apparatus, comprises housing, it is characterized in that, the inside of described housing comprises the high-power audio playing circuit as described in any one of claim 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520092326.1U CN204632339U (en) | 2015-02-09 | 2015-02-09 | A kind of high-power audio playing circuit and audio playing apparatus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520092326.1U CN204632339U (en) | 2015-02-09 | 2015-02-09 | A kind of high-power audio playing circuit and audio playing apparatus |
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| CN204632339U true CN204632339U (en) | 2015-09-09 |
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| CN201520092326.1U Expired - Fee Related CN204632339U (en) | 2015-02-09 | 2015-02-09 | A kind of high-power audio playing circuit and audio playing apparatus |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105872889A (en) * | 2016-03-30 | 2016-08-17 | 来安县新元机电设备设计有限公司 | Mobile sound box control circuit and mobile sound box |
| CN110649311A (en) * | 2019-09-04 | 2020-01-03 | 上海智汇电器有限公司 | Battery pack |
-
2015
- 2015-02-09 CN CN201520092326.1U patent/CN204632339U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105872889A (en) * | 2016-03-30 | 2016-08-17 | 来安县新元机电设备设计有限公司 | Mobile sound box control circuit and mobile sound box |
| CN110649311A (en) * | 2019-09-04 | 2020-01-03 | 上海智汇电器有限公司 | Battery pack |
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