CN109873555A - A kind of pressure-stabilization filter of musical instrument - Google Patents
A kind of pressure-stabilization filter of musical instrument Download PDFInfo
- Publication number
- CN109873555A CN109873555A CN201910243561.7A CN201910243561A CN109873555A CN 109873555 A CN109873555 A CN 109873555A CN 201910243561 A CN201910243561 A CN 201910243561A CN 109873555 A CN109873555 A CN 109873555A
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- 238000011105 stabilization Methods 0.000 title claims abstract description 31
- 230000006837 decompression Effects 0.000 claims abstract description 21
- 238000001914 filtration Methods 0.000 claims abstract description 16
- 239000004065 semiconductor Substances 0.000 claims description 33
- 239000003990 capacitor Substances 0.000 claims description 22
- 230000005611 electricity Effects 0.000 claims description 4
- 230000006641 stabilisation Effects 0.000 abstract description 10
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
- Electrophonic Musical Instruments (AREA)
Abstract
The present invention relates to a kind of pressure-stabilization filters of musical instrument, including shell, are set in the housing the circuit board of side, and input interface, output interface on shell；The circuit board bearing has control circuit；The control circuit includes reverse-connection preventing circuit, is connected to the booster circuit of reverse-connection preventing circuit output end, is connected to the reduction voltage circuit of booster circuit output end, and is connected to the filtering reduction voltage circuit of reduction voltage circuit output end；The filtering reduction voltage circuit output end is connect with output interface.The present invention is filtered decompression after decompression and by filtering reduction voltage circuit, so that the voltage stabilization and current stabilization of output interface by being depressured after input voltage boosts.The present invention can be effectively by output interface Voltage Stability Control in 9V, and the control of ripple value plays better effect so that electronic musical instrument is significantly reduced by the interference of power supply in 6mv or so.
Description
Technical field
The present invention relates to musical instruments, more specifically refer to a kind of pressure-stabilization filter of musical instrument.
Background technique
Noise is least endurable for guitarist, and most clean power supply is 9V battery, ripple value in the world for this
For 6mv or so.
And the usual ripple of adapter, in 200mv or so, the Ripple Noise more than 80mv will be clearly.And existing mistake
Filter is difficult voltage stabilization in 9V, and ripple value controls 6mv or so.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of pressure-stabilization filter of musical instrument is provided.
To achieve the above object, the invention adopts the following technical scheme:
A kind of pressure-stabilization filter of musical instrument, including shell, are set in the housing the circuit board of side, and the input on shell
Interface, output interface；The circuit board bearing has control circuit；It is characterized in that, the control circuit includes reverse-connection preventing circuit,
It is connected to the booster circuit of reverse-connection preventing circuit output end, is connected to the reduction voltage circuit of booster circuit output end, and is connected to decompression
The filtering reduction voltage circuit of circuit output end；The filtering reduction voltage circuit output end is connect with output interface.
Its further technical solution are as follows: the reverse-connection preventing circuit includes metal-oxide-semiconductor Q3, model TDM3478；The MOS
The drain power end cathode of pipe Q3 connects, and grid is connect by resistance R20 with power end anode, source electrode ground connection；The metal-oxide-semiconductor Q3
Grid by diode D6, resistance R21 it is in parallel after be grounded；The diode D6 plus earth.
Its further technical solution are as follows: the booster circuit includes boost control chip U1, model XR4981；It is described
The end feet VISP of boost control chip U1 and the output end of reverse-connection preventing circuit connect, and end feet VISN, AVIN passes through resistance R1, R2 simultaneously
It is connect after connection with the output end of reverse-connection preventing circuit；The end feet SW of the boost control chip U1 is connect with output end；The boosting
The end feet MDRV of control chip U1 is connect with the grid for the metal-oxide-semiconductor Q2 being equipped with；The drain electrode of the metal-oxide-semiconductor Q2 and boost control chip
The output end of U1 connects, source electrode ground connection；When the voltage of the end feet MDRV is more than setting value, metal-oxide-semiconductor Q2 conducting；The boosting control
The end feet SDRV of coremaking piece U1 is connect by resistance R3 with the grid for the metal-oxide-semiconductor Q1 being equipped with；The source electrode of the metal-oxide-semiconductor Q1 and boosting
The output end connection of chip U1 is controlled, drain electrode is connect with next stage circuit；When the voltage of the end feet SDRV is in setting value,
Metal-oxide-semiconductor Q1 conducting.
Its further technical solution are as follows: be in series with boost inductance between the end feet AVIN and SW of the boost control chip U1
L1, inductance sword cutting edge of a knife or a sword absorbing circuit；End feet FB is connect by resistance R9 with the drain electrode of metal-oxide-semiconductor Q1, by Voltage Feedback to control of boosting
Coremaking piece U1.
Its further technical solution are as follows: capacitor C14 is equipped between the end feet BS and end feet SW of the boost control chip U1,
And it is connect by diode D5 with end feet VCC, PGOOD；The end feet VCC is grounded by capacitor C12.
Its further technical solution are as follows: the reduction voltage circuit includes decompression control chip U3, model AAP6034A；Institute
The output end of the end feet IN and booster circuit that state decompression control chip U3 connect；The output end inductance L2 of the end feet SW and filtering
Circuit connection.
Its further technical solution are as follows: the decompression control chip U3 end feet SW is grounded by diode D1；Two pole
The plus earth of pipe D1；The output end of the end feet FB connects, with feedback output end voltage.
Its further technical solution are as follows: the filtering reduction voltage circuit includes triode Q5, model 2SD1804L；It is described
The base stage of triode Q5 is grounded by capacitor C20 and passes through resistance R23 and connect with collector, collector and reduction voltage circuit output end
Connection, emitter are connect with output interface.
Its further technical solution are as follows: the output interface is equipped with self- recoverage protective tube F1.
Its further technical solution are as follows: further include input filter circuit and output filter circuit；Wherein, the input filter
Circuit is set to the input terminal of booster circuit, and output filter circuit is set to the output end of reduction voltage circuit；The input filter circuit packet
Capacitor C10, C2, C3, C4 are included, and capacitor C10, C2, C3, C4 are grounded；The filter circuit includes capacitor C9, C11, C8, and
Capacitor C9, C11, C8 are grounded.
Compared with the prior art, the invention has the advantages that: the present invention after input voltage boosts by dropping
Pressure is filtered decompression after decompression and by filtering reduction voltage circuit, so that the voltage stabilization and current stabilization of output interface.The present invention can be effective
By output interface Voltage Stability Control in 9V, the control of ripple value in 6mv or so so that electronic musical instrument by power supply interference substantially
Reduction, play better effect.
The invention will be further described in the following with reference to the drawings and specific embodiments.
Detailed description of the invention
Fig. 1 is a kind of exploded view of the pressure-stabilization filter of musical instrument of the present invention；
Fig. 2 is a kind of circuit block diagram of the pressure-stabilization filter of musical instrument of the present invention；
Fig. 3 is a kind of physical circuit figure of the pressure-stabilization filter of musical instrument of the present invention；
Fig. 4 is a kind of physical circuit figure of the pressure-stabilization filter of musical instrument of the present invention.
Specific embodiment
In order to more fully understand technology contents of the invention, combined with specific embodiments below to technical solution of the present invention into
One step introduction and explanation, but not limited to this.
The drawing of the embodiment of the present invention as shown in Figure 1 to Figure 4.
A kind of pressure-stabilization filter, as shown in Figure 1 to Figure 2, including shell 10, the circuit board 11 set on 10 inside of shell, and
Input interface, output interface 18 on shell 10.Circuit board 11 carries control circuit.Control circuit includes anti-reverse electricity
Road 12 is connected to the booster circuit 13 of 12 output end of reverse-connection preventing circuit, is connected to the reduction voltage circuit 14 of 13 output end of booster circuit,
And it is connected to the filtering reduction voltage circuit 15 of 14 output end of reduction voltage circuit.It filters 15 output end of reduction voltage circuit and output interface 18 connects
It connects.Output interface 18 be can be it is multiple so that multiple musical instruments can share (in the present embodiment output interface 18 be accessory power outlet
DC55*21mm)。
In the present embodiment, the DC voltage that external input voltage is 5 to 19V boosts to the straight of 22V by booster circuit 13
Galvanic electricity pressure, then the DC voltage of 10.5V is depressurized to by reduction voltage circuit 14, be then filtered by filtering reduction voltage circuit 15 and
So that voltage drops to 9V, finally making the voltage of output interface 18 is 9V for decompression.
As shown in figure 3, reverse-connection preventing circuit 12 includes metal-oxide-semiconductor Q3, model TDM3478.The drain power end of metal-oxide-semiconductor Q3
Cathode connection, grid are connect by resistance R20 with power end anode, source electrode ground connection.The grid of metal-oxide-semiconductor Q3 by diode D6,
It is grounded after resistance R21 is in parallel.Diode D6 plus earth.The metal-oxide-semiconductor Q3 of reverse-connection preventing circuit 12 plays the role of switch, reversed
In the case where, metal-oxide-semiconductor Q3 is disconnected, and circuit is not turned on.
Preferably, the output end of reverse-connection preventing circuit 12 is equipped with input filter circuit 16, is connect by capacitor C10, C2, C3, C4
Ground is filtered the voltage of input terminal.
As shown in figure 3, booster circuit 13 includes boost control chip U1, model XR4981.Boost control chip U1
End feet VISP connect with the output end of reverse-connection preventing circuit 12, end feet VISN, AVIN by resistance R1, R2 it is in parallel after with it is anti-reverse
The output end of circuit 12 connects.The end feet SW of boost control chip U1 is connect with output end.The end feet of boost control chip U1
MDRV is connect with the grid for the metal-oxide-semiconductor Q2 being equipped with.The drain electrode of metal-oxide-semiconductor Q2 is connect with the output end of boost control chip U1, source electrode
Ground connection, using as on-off action, when the voltage of end feet MDRV is more than setting value, metal-oxide-semiconductor Q2 is connected.The end of boost control chip U1
Foot SDRV is connect by resistance R3 with the grid for the metal-oxide-semiconductor Q1 being equipped with.The output of the source electrode and boost control chip U1 of metal-oxide-semiconductor Q1
End connection (i.e. end feet SW), drain electrode connect (i.e. reduction voltage circuit 14) with next stage circuit.The voltage of end feet SDRV is in setting value
When, metal-oxide-semiconductor Q1 conducting.Metal-oxide-semiconductor Q1, metal-oxide-semiconductor Q2 model be STN4260, as switch.
Boost inductance L1, inductance sword cutting edge of a knife or a sword absorbing circuit are in series between the end feet AVIN and SW of boost control chip U1.End
Foot FB is connect by resistance R9 with the drain electrode of metal-oxide-semiconductor Q1, by Voltage Feedback to boost control chip U1.
Resistance R1, resistance R2 are equipped between end feet VISP, VISN of boost control chip U1；The resistance R1, resistance R2
It is connected in parallel.Resistance R1, resistance R2 are for the detection to input current.
It is equipped with capacitor C14 between the end feet BS and end feet SW of boost control chip U1, and passes through diode D5 and end feet
VCC, PGOOD connection.End feet VCC is grounded by capacitor C12.
The end feet EN of boost control chip U1 is connect by resistance R5 with input filter circuit 15, for input voltage
Detection.
Booster circuit 13 boosts to filtered input voltage, and the voltage of 5-19V of input is risen to 22V output.
Preferably, output filter circuit 17 is provided between booster circuit 13 and reduction voltage circuit 14, for booster circuit
Output end is filtered.Wherein, filter circuit 17 includes capacitor C9, C11, C8, and capacitor C9, C11, C8 are connected to ground.
As shown in figure 4, reduction voltage circuit 14 includes decompression control chip U3, model AAP6034A.Decompression control chip
The end feet IN of U3 is connect with the output end of booster circuit 13.The output end inductance L2 of end feet SW is connect with filter circuit, to output
The electric current at end has the function of current stabilization.
Decompression control chip U3 end feet SW is grounded by diode D1.The plus earth of diode D1.The output of end feet FB
End connection, with feedback output end voltage.End feet BS is connect by capacitor C21 with output end.
Reduction voltage circuit 14 will be arranged after booster circuit 13, for being depressurized to the voltage 22V after boosting
10.5V, while current stabilization is carried out to electric current.
As shown in figure 4, filtering reduction voltage circuit 15 includes triode Q5, model 2SD1804L.The base stage of triode Q5
It is grounded by capacitor C20 and passes through resistance R23 and connect with collector, collector is connect with 14 output end of reduction voltage circuit, emitter
It is connect with output interface 18.Base stage is connect with access port, resistance R23 decompression, and capacitor C20 is filtered, so that base stage has
There is a stable voltage, so that collector is connected with emitter, to reach linear voltage stabilization and reduce output ripple.
Wherein, output interface 18 is equipped with self- recoverage protective tube F1, so that 18 short circuit of output interface or overcurrent can play guarantor
The effect of shield.
The output end of reduction voltage circuit 14 can be connect with multiple filtering reduction voltage circuits 15 so that output interface 18 be it is multiple,
Improve practicability.
The voltage of output interface 18 is 9V, and ripple value is 6mv or so, is used with adapting to different electronic musical instruments.
In conclusion the present invention by being depressured after input voltage boosts, after decompression and passes through filtering decompression electricity
Road is filtered decompression, so that the voltage stabilization and current stabilization of output interface.The present invention can effectively exist output interface Voltage Stability Control
9V, the control of ripple value play better effect so that electronic musical instrument is significantly reduced by the interference of power supply in 6mv or so.
It is above-mentioned that technology contents of the invention are only further illustrated with embodiment, in order to which reader is easier to understand, but not
It represents embodiments of the present invention and is only limitted to this, any technology done according to the present invention extends or recreation, by of the invention
Protection.Protection scope of the present invention is subject to claims.
Claims (10)
1. a kind of pressure-stabilization filter of musical instrument, including shell, are set in the housing the circuit board of side, and the input on shell connects
Mouth, output interface；The circuit board bearing has control circuit；It is characterized in that, the control circuit includes reverse-connection preventing circuit, even
It is connected to the booster circuit of reverse-connection preventing circuit output end, is connected to the reduction voltage circuit of booster circuit output end, and is connected to decompression electricity
The filtering reduction voltage circuit of road output end；The filtering reduction voltage circuit output end is connect with output interface.
2. a kind of pressure-stabilization filter of musical instrument according to claim 1, which is characterized in that the reverse-connection preventing circuit includes
Metal-oxide-semiconductor Q3, model TDM3478；The drain power end cathode of the metal-oxide-semiconductor Q3 connects, and grid passes through resistance R20 and power supply
Rectify pole connection, source electrode ground connection；The grid of the metal-oxide-semiconductor Q3 after diode D6, resistance R21 parallel connection by being grounded；Two pole
Pipe D6 plus earth.
3. a kind of pressure-stabilization filter of musical instrument according to claim 2, which is characterized in that the booster circuit includes boosting
Control chip U1, model XR4981；The end feet VISP of the boost control chip U1 and the output end of reverse-connection preventing circuit connect
It connects, end feet VISN, AVIN after resistance R1, R2 parallel connection with the output end of reverse-connection preventing circuit by connecting；The boost control chip
The end feet SW of U1 is connect with output end；The end feet MDRV of the boost control chip U1 is connect with the grid for the metal-oxide-semiconductor Q2 being equipped with；
The drain electrode of the metal-oxide-semiconductor Q2 is connect with the output end of boost control chip U1, source electrode ground connection；The voltage of the end feet MDRV is more than
When setting value, metal-oxide-semiconductor Q2 conducting；The end feet SDRV of the boost control chip U1 passes through the resistance R3's and metal-oxide-semiconductor Q1 being equipped with
Grid connection；The source electrode of the metal-oxide-semiconductor Q1 is connect with the output end of boost control chip U1, and drain electrode is connect with next stage circuit；
When the voltage of the end feet SDRV is in setting value, metal-oxide-semiconductor Q1 conducting.
4. a kind of pressure-stabilization filter of musical instrument according to claim 3, which is characterized in that the boost control chip U1's
Boost inductance L1, inductance sword cutting edge of a knife or a sword absorbing circuit are in series between end feet AVIN and SW；End feet FB passes through resistance R9's and metal-oxide-semiconductor Q1
Drain electrode connection, by Voltage Feedback to boost control chip U1.
5. a kind of pressure-stabilization filter of musical instrument according to claim 4, which is characterized in that the boost control chip U1's
It is equipped with capacitor C14 between end feet BS and end feet SW, and is connect by diode D5 with end feet VCC, PGOOD；The end feet VCC
It is grounded by capacitor C12.
6. a kind of pressure-stabilization filter of musical instrument according to claim 5, which is characterized in that the reduction voltage circuit includes decompression
Control chip U3, model AAP6034A；The end feet IN of the decompression control chip U3 and the output end of booster circuit connect；
The output end inductance L2 of the end feet SW is connect with filter circuit.
7. a kind of pressure-stabilization filter of musical instrument according to claim 6, which is characterized in that the decompression controls the end chip U3
Foot SW is grounded by diode D1；The plus earth of the diode D1；The output end of the end feet FB connects, with feedback output
Hold voltage.
8. a kind of pressure-stabilization filter of musical instrument according to claim 7, which is characterized in that the filtering reduction voltage circuit includes
Triode Q5, model 2SD1804L；The base stage of the triode Q5 is grounded by capacitor C20 and passes through resistance R23 and collection
Electrode connection, collector are connect with reduction voltage circuit output end, and emitter is connect with output interface.
9. a kind of pressure-stabilization filter of musical instrument according to claim 8, which is characterized in that the output interface is equipped with from extensive
Double insurance pipe F1.
10. a kind of pressure-stabilization filter of musical instrument according to claim 9, which is characterized in that further include input filter circuit
And output filter circuit；Wherein, the input filter circuit is set to the input terminal of booster circuit, and output filter circuit is set to decompression
The output end of circuit；The input filter circuit includes capacitor C10, C2, C3, C4, and capacitor C10, C2, C3, C4 are grounded；Institute
Stating filter circuit includes capacitor C9, C11, C8, and capacitor C9, C11, C8 are grounded.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910243561.7A CN109873555A (en) | 2019-03-28 | 2019-03-28 | A kind of pressure-stabilization filter of musical instrument |
| PCT/CN2019/113159 WO2020192104A1 (en) | 2019-03-28 | 2019-10-25 | Voltage-regulating filter of musical instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910243561.7A CN109873555A (en) | 2019-03-28 | 2019-03-28 | A kind of pressure-stabilization filter of musical instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109873555A true CN109873555A (en) | 2019-06-11 |
Family
ID=66921476
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910243561.7A Pending CN109873555A (en) | 2019-03-28 | 2019-03-28 | A kind of pressure-stabilization filter of musical instrument |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN109873555A (en) |
| WO (1) | WO2020192104A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111474875A (en) * | 2019-12-30 | 2020-07-31 | 湖北楚航电子科技有限公司 | Container monitoring device |
| WO2020192104A1 (en) * | 2019-03-28 | 2020-10-01 | 深圳市威拓思音乐有限公司 | Voltage-regulating filter of musical instrument |
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2019
- 2019-03-28 CN CN201910243561.7A patent/CN109873555A/en active Pending
- 2019-10-25 WO PCT/CN2019/113159 patent/WO2020192104A1/en active Application Filing
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| CN201252402Y (en) * | 2008-06-10 | 2009-06-03 | 许晓华 | Protective circuit for preventing reverse connection of power supply |
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| US20170019017A1 (en) * | 2015-07-17 | 2017-01-19 | Qualcomm Incorporated | Buck regulator with current cancellation |
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| WO2020192104A1 (en) * | 2019-03-28 | 2020-10-01 | 深圳市威拓思音乐有限公司 | Voltage-regulating filter of musical instrument |
| CN111474875A (en) * | 2019-12-30 | 2020-07-31 | 湖北楚航电子科技有限公司 | Container monitoring device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020192104A1 (en) | 2020-10-01 |
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