CN108966542A - A kind of multiplexer (MUX of music - Google Patents
A kind of multiplexer (MUX of music Download PDFInfo
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- CN108966542A CN108966542A CN201811073602.4A CN201811073602A CN108966542A CN 108966542 A CN108966542 A CN 108966542A CN 201811073602 A CN201811073602 A CN 201811073602A CN 108966542 A CN108966542 A CN 108966542A
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- interface
- electrically connected
- mux
- multiplexer
- circuit
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/0017—Casings, cabinets or drawers for electric apparatus with operator interface units
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0217—Mechanical details of casings
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0247—Electrical details of casings, e.g. terminals, passages for cables or wiring
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K5/00—Casings, cabinets or drawers for electric apparatus
- H05K5/02—Details
- H05K5/0256—Details of interchangeable modules or receptacles therefor, e.g. cartridge mechanisms
- H05K5/026—Details of interchangeable modules or receptacles therefor, e.g. cartridge mechanisms having standardized interfaces
Abstract
The present invention relates to a kind of multiplexer (MUX of music, including shell, the control circuit that is set in the housing；The shell is equipped with several key switches and interface；The interface includes signaling interface and power interface；The control circuit includes power circuit, signal switching circuit；The signal switching circuit is equipped with control unit；Described control unit is equipped with managing chip, model STC11F08XE；The signaling interface and signal switching circuit are electrically connected；The power interface and power circuit are electrically connected.The present invention is by power circuit set into multiplexer (MUX, and degree of integration is high, and small in size, wiring is few；In addition, production cost is low, it is easy for installation.
Description
Technical field
The present invention relates to instrument devices, more specifically refer to a kind of multiplexer (MUX of music.
Background technique
Multiplexer (MUX is without power supply function currently on the market, and the effect device connecting with multiplexer (MUX needs other outer
Power supply is connect, multiple conducting wires is needed to connect, complex in the process of connection, error rate is larger.Synthesis degree is low, practical not side
Just, and user needs in addition purchase power supply, increases cost.
Summary of the invention
It is an object of the invention to overcome the deficiencies of existing technologies, a kind of multiplexer (MUX of music is provided.
To achieve the above object, the invention adopts the following technical scheme:
A kind of multiplexer (MUX of music, including shell, the control circuit being set in the housing；The shell is equipped with several
A key switch and interface；The interface includes signaling interface and power interface；The control circuit includes power circuit, signal
Switching circuit；The signal switching circuit is equipped with control unit；Described control unit is equipped with managing chip, model
STC11F08XE；The signaling interface and signal switching circuit are electrically connected；The power interface and power circuit are electrically connected.
Its further technical solution are as follows: the signaling interface includes main signal input interface, main signal output interface, and is set
Several subsignal output interfaces being placed between main signal interface and main output signal interface；The subsignal output interface with
Corresponding effect device is electrically connected.
Its further technical solution are as follows: the key switch be set to main signal input interface and subsignal output interface it
Between, to control the closing or opening of corresponding subsignal output interface, so that signal is by the effect device of various combination from main letter
The output of number output interface.
Its further technical solution are as follows: relay is equipped between the main signal input interface and subsignal output interface；
The relay and managing chip are electrically connected；The relay controls the closing or opening of corresponding subsignal output interface,
So that signal is exported by the effect device of various combination from main signal output interface.
Its further technical solution are as follows: the subsignal output interface is four, and the relay is four；The relay
The anode of device is electrically connected with the power supply, and cathode is electrically connected with managing chip end feet P2.0, P2.1, P2.2, P2.3 respectively.Anode
Protection circuit is equipped between cathode；The protection circuit includes resistance R1 or resistance R2 or resistance R3 or resistance R4 or resistance
R5 is equipped with diode D1 or D2 or D3 or D4, prevents from burning out chip between resistance output end and cathode.
Its further technical solution are as follows: described control unit is additionally provided with display screen, edit key and saving button；It is described aobvious
Display screen, edit key and saving button and managing chip are electrically connected.P0.0, P0.1 of the display screen and managing chip,
P0.2, P0.3, P0.4, P0.5, P0.6, P0.7 are electrically connected；The P1.7 of the edit key and managing chip is electrically connected；Institute
The P1.6 for stating saving button and managing chip is electrically connected.
Its further technical solution are as follows: the key switch includes group column channel switching switch, four channel switch and auxiliary
Help signal output switch；The P1.2 of described group of column channel switching switch and managing chip is electrically connected；Four switching channels
It is electrically connected respectively with P1.0, P4.6, P4.1, P4.5 end feet of managing chip；The auxiliary signal output switch and management core
The P1.1 end feet of piece is electrically connected.
Its further technical solution are as follows: the power circuit includes metal-oxide-semiconductor H-bridge drive circuit, power management chip and more
Road isolated form decompression voltage regulator；Model EM78P301N -1 of the power management chip；The metal-oxide-semiconductor H bridge driving electricity
The output end on road and AD1, AD4 of managing chip are electrically connected.
Its further technical solution are as follows: the multi-path isolated decompression voltage regulator is provided by power interface to effect device
Electric power；The multi-path isolated decompression voltage regulator includes high frequency transformer, the rectifying schottky two connecting with high frequency transformer
Pole pipe, the capacitor of power filter, three linear voltage stabilizing chips；The three linear voltage stabilizing chip output end is through multiple filter capacitors
It is connect afterwards with power interface.
Its further technical solution are as follows: the shell includes upper housing and lower case；The key, which is opened, is fixed on upper housing
And extend to hull outside；The signaling interface and power interface are set to upper housing, and closely arrange.
Compared with the prior art, the invention has the advantages that: the present invention by power circuit set into multiplexer (MUX,
Degree of integration is high, and small in size, wiring is few；In addition, production cost is low, it is easy for installation.
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 three-dimensional structure diagram of the multiplexer (MUX of music of the present invention；
Fig. 2 is a kind of explosive view of the multiplexer (MUX of music of the present invention；
Fig. 3 is a kind of managing chip catenation principle figure of the multiplexer (MUX of music of the present invention；
Fig. 4 is a kind of relay catenation principle figure of the multiplexer (MUX of music of the present invention；
Fig. 5 is a kind of key switch circuit schematic diagram of the multiplexer (MUX of music of the present invention；
Fig. 6 is a kind of display screen circuit diagram of the multiplexer (MUX of music of the present invention；
Fig. 7 is a kind of reduction voltage circuit schematic diagram of the multiplexer (MUX of music of the present invention；
Fig. 8 is a kind of power management chip of multiplexer (MUX of music of the present invention and the principle of voltage detecting circuit
Figure；
Fig. 9 is the half-bridge circuit schematic diagram in a kind of full-bridge transformation of multiplexer (MUX of music of the present invention；
Figure 10 is another half-bridge circuit schematic diagram in a kind of full-bridge transformation of multiplexer (MUX of music of the present invention；
Figure 11 is a kind of metal-oxide-semiconductor H-bridge drive circuit of the multiplexer (MUX of music of the present invention wherein half schematic diagram；
Figure 12 is a kind of metal-oxide-semiconductor H-bridge drive circuit of the multiplexer (MUX of music of the present invention wherein the other half schematic diagram.
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.
Such as the drawing that Fig. 1 to Figure 12 is the embodiment of the present invention.
A kind of multiplexer (MUX of music, including shell 100, the control circuit 110 in shell 100.Shell 100
Equipped with several key switches and interface.Interface includes signaling interface and power interface.Control circuit 110 includes power circuit,
Signal switching circuit.Signal switching circuit is equipped with control unit.Control unit is equipped with managing chip U1, model
STC11F08XE.Signaling interface and signal switching circuit are electrically connected.Power interface and power circuit are electrically connected.
Shell 100 includes upper housing 101 and lower case 102, and upper housing 101 and lower case 102 are connected by screw to.On
Shell 101 is arranged to lateral U-shaped structure, and the inner wall of U-shaped structure is equipped with protruding block.Protruding block is equipped with connecting hole.Lower casing
Body 102 is again provided with vertical U-shaped structure, and the bottom of U-shaped structure is equipped with connecting hole.On the protruding block of upper housing 101
Connecting hole is aligned with the connecting hole of 102 bottom of lower case, is screwed connection.Upper housing 101 lateral U-shaped structure and lower casing
The vertical U-shaped structure of body 102 matches the inner-cavity structure to form shell 100.The inner cavity of the fixed shell 100 of control circuit 110.On
Shell 101 and lower case 102 are bent into the mutual cooperation of U-shaped structure, so that 100 neat appearance of shell, easy for installation.
Signaling interface includes main signal input interface 20, main signal output interface 05, and is set to main signal interface and master
Several subsignal output interfaces between output signal interface.In the present embodiment, subsignal output interface is four, respectively
L1,L2,L3,L4.Subsignal output interface is electrically connected with corresponding effect device, and occurs in pairs.Subsignal output interface
Interface is returned including signal transmission interface and signal.Wherein, the input terminal of signal transmission interface and effect device is electrically connected, signal
The output end for returning to interface and effect device is electrically connected.
Specifically, the signal transmission interface 17 of subsignal output interface L1, signal returns to interface 16；Subsignal output interface
The signal transmission interface 14 of L2, signal return to interface；The signal transmission interface 11 of subsignal output interface L3, signal return to interface
10；The signal transmission interface 7 of subsignal output interface L4, signal return to interface 8.
In the present embodiment, it is 4 pairs that signal transmission interface and signal, which return to interface, respectively controls different effect devices.Its
In, signal transmission interface 17 and signal return to interface 16 and control the effect device 1 connect in the circuit L1, signal transmission interface 14 and signal
It returns to Interface Controller and connects the effect device 2 in the circuit L2, signal transmission interface 11 and signal return to the control of interface 10 and connect in the circuit L3
Effect device 3, signal transmission interface 8 and signal return to interface 7 and control the effect device 4 connect in the circuit L4.
Key switch is set between main signal input interface 20 and subsignal output interface, defeated to control corresponding subsignal
The closing or opening of outgoing interface, so that signal is exported by the effect device of various combination from main signal output interface 05.
Specifically, key switch includes key switch A (22), key switch B (23), key switch C (24), key switch
D (25), wherein key switch A, key switch B, key switch C, key switch D control subsignal output interface L4, son respectively
Signal output interface L3, subsignal output interface L2, subsignal output interface L1 closing or opening, thus control effect device 4, effect
The on-off of fruit device 3, effect device 2, effect device 1.
Relay is equipped between main signal input interface 20 and subsignal output interface.Relay and managing chip U1 are electrical
Connection.Relay controls the closing or opening of corresponding subsignal output interface, so that the effect device that signal passes through various combination
It is exported from main signal output interface 05.
In the present embodiment, the function of relay and the function of key switch are close, control corresponding subsignal output and connect
The on-off of mouth, but relay also has the function of each subsignal output interface of editable.Wherein, relay RL1, RL2,
RL3, RL4 control subsignal output interface L4, subsignal output interface L3, subsignal output interface L2, subsignal output respectively
Interface L1 closing or opening, thus the on-off of control effect device 4, effect device 3, effect device 2, effect device 1.
Relay RL1, relay RL2, relay RL3, relay RL4 anode be electrically connected with the power supply, cathode difference
It is electrically connected with managing chip U1 end feet P2.0, P2.1, P2.2, P2.3.Protection circuit is equipped between positive electrode and negative electrode.Protection electricity
Road includes resistance R1 or resistance R2 or resistance R3 or resistance R4 or resistance R5, and diode D1 is equipped between resistance output end and cathode
Or D2 or D3 or D4, it prevents from burning out chip.
More specifically, as relay RL1, the end feet 4,5 and signal transmission interface 17 of relay RL1 is electrically connected,
End feet 6,7 and signal return to interface 16 and are electrically connected；End feet 3 and main signal input terminal are electrically connected, end feet 8 and main output signal
End is electrically connected；End feet 2 and 9 is connected with each other；End feet 1 and 10 is respectively the cathode and anode of relay RL1.Relay RL1 is not
It is electric in the case where, end feet 3,2,9,8 be interconnected, i.e., signal from end feet 3 pass through end feet 2 and 9, be transmitted to end feet 8, at this point,
Subsignal output interface L1 is disconnected, and the effect device 1 being electrically connected therewith disconnects, and the signal of input is without effect device 1.Work as relay
Device RL1 obtain it is electric in the case where, relay RL1 end feet 3,4,5 is interconnected, and end feet 6,7,8 is interconnected, i.e. signal is from end feet 3
It is transmitted to signal transmission interface 17 (S1) by end feet 4, then signal transmission interface 17 (S1) and the anode of effect device 1 electrically connect
It connects, after signal is handled in effect device 1, then from the sending of the cathode of effect device 1, returns to interface 16 (R1) by signal and receive return
It is exported to the end feet 7 of relay RL1, and by end feet 8, to complete processing of the effect device 1 to signal.In addition, relay
RL2, relay RL3, the work of relay RL4 are separate similar with the principle of relay RL1, do not make burden herein.
Specifically, the input terminal of relay RL1 is additionally provided with relay RL9, for controlling the defeated of auxiliary signal or main signal
Enter.The end feet 8 and main signal input terminal of relay RL9 is electrically connected, and end feet 3 is grounded；End feet 4,5,9 be connected with each other, and with after
The signal input part foot 3 of electric appliance RL1 connects；End feet 2,6,7 is connected with each other, and is electrically connected with auxiliary signal interface 19 (TUNER)
It connects.End feet 1 (i.e. cathode) and managing chip U1 end feet P4.4 are electrically connected, and end feet 10 connects to power supply.Equally, relay RL9
Protection circuit also is provided between positive electrode and negative electrode.Wherein, the end feet P1.1 of auxiliary signal interface 19 (TUNER) and managing chip U1
It is electrically connected.
Control unit is additionally provided with display screen 01, edit key 03 (EDIT) and saving button 02 (STORE).Display screen 01,
Edit key 03 and saving button 02 and managing chip U1 are electrically connected.P0.0, P0.1 of display screen 01 and managing chip U1,
P0.2, P0.3, P0.4, P0.5, P0.6, P0.7 are electrically connected.The P1.7 of edit key 03 and managing chip U1 are electrically connected.It protects
The P1.6 for depositing key 02 and managing chip U1 is electrically connected.It is closed by the corresponding subsignal output port of different key switch control
It closes or disconnects, so that control combination of the output signal by different effect devices, and different combined effect device states is passed through
Edit key 03 and saving button 02 are stored to the memory module being equipped with, in use, passing through pressing group column channel switching switch
(BANK) the different combination of 21 switchings.Wherein, the end feet P1.2 electricity of group column channel switching switch (BANK) 21 and managing chip U1
Property connection.Pressing group column channel switching switch (BANK) 21 sends signal to managing chip U1, and then managing chip U1 is sent not
Same signal controls corresponding relay on-off, so that signal passes through different effect devices.
Key switch A (22), key switch (is i.e. pressed in addition to group column channel switching switch (BANK) 21, four channel switch
Key switch B (23), key switch C (24), key switch D (25)), it further include auxiliary signal output switch MUTE (26).Auxiliary
The P1.2 of signal output switch MUTE (26) and managing chip U1 is electrically connected；Key switch A (22), it key switch B (23), presses
Key switch C (24), key switch D (25) are electrically connected with P1.0, P4.6, P4.1, P4.5 end feet of managing chip U1 respectively.It is auxiliary
The P1.1 end feet of signal output switch MUTE (26) and managing chip U1 is helped to be electrically connected.Key switch is for manually setting sub- letter
The on-off of number output interface, and the state of relay is synchronous with key switch, and so press of key switch is to edit, (editor is pressed
Key 03 (EDIT)) subsignal output interface on off operating mode, after relay synchronizes, the on off operating mode of relay is saved
(saving button 02 (STORE)) can be switched not using group column channel switching switch (BANK) 21 when in use to memory module
Same mode.
In circuit diagram, as shown in figure 5, group column channel switching switch (BANK) 21 is corresponding with BANK；Key switch A
(22) corresponding with PGM-D/L4, key switch B (23) is corresponding with PGM-C/L3, key switch C (24) and PGM-B/L2
Corresponding, key switch D (25) is corresponding with PGM-A/L1, and auxiliary signal exports switch MUTE (26) and MUTE (TUNER) phase
It is corresponding.
Power circuit includes metal-oxide-semiconductor H-bridge drive circuit, power management chip and multi-path isolated decompression voltage regulator.Electricity
Model EM78P301N -1 of source control chip U8.The output end of metal-oxide-semiconductor H-bridge drive circuit is with power management chip U8's
AD1, AD4 are electrically connected.
Multi-path isolated decompression voltage regulator provides electric power to effect device by power interface.Multi-path isolated lowering and stabilizing blood pressure
Circuit includes high frequency transformer, the Rectifying Schottky diodes (D5, D12, D13, D14, D15) connecting with high frequency transformer, electricity
The capacitor of source filtering, three linear voltage stabilizing chips.Three linear voltage stabilizing chips are (as shown in fig. 7, three linear voltage stabilizing chip difference
For U2, U4, U5, U6, U7, model is 78M09) output end connect after multiple filter capacitors with power interface.
Specifically, in the present embodiment, the connection of one of power interface is illustrated for example, and front end passes through coil
By voltage step-down, coil is depressured latter terminating diode D5 and is rectified, other end ground connection；The electrodeless electricity of the output end of diode D5
Hold C38, C37 and connect after having the filtering of electrode capacitance EC7 with three linear voltage stabilizing chip U2 input terminals, wherein three it is linear surely
Press the model 78M09 of chip U2.Non-polar capacitor C38, C37 and there is the one end electrode capacitance EC7 to connect with diode D5 output end, separately
One end and ground line connect.The effect of three linear voltage stabilizing chips is 12V voltage to be carried out decompression processing, and stabilize to 5V and fix
Value after export.The output end of three linear voltage stabilizing chip U2 by non-polar capacitor C36, have electrode capacitance C33, non-polar capacitor C35,
It is connect after having electrode capacitance C34 voltage regulation filtering with power interface.Non-polar capacitor C36, there is electrode capacitance C33, non-polar capacitor C35, have pole
The one end capacitor C34 ground connection.
Preferably, have and be equipped with resistance F5 between electrode capacitance C33 and non-polar capacitor C35.Moreover, being parallel with power interface
Light-emitting diode LED 15.Wherein, power interface is that it is defeated to be set to subsignal for providing the power interface 15 of 1 electric energy of effect device
The signal transmission interface 17 and signal of outgoing interface L1 returns to 16 side of interface.
In addition, the circuit of power interface 18,12,09,06 is identical as the circuit theory of power interface 15, do not make to tire out herein
It is superfluous.Wherein, power interface 18 is supplied to the power supply of stage tuner, and power interface 12 is powered to effect device 2, and power interface 09 is to effect
Fruit device 3 is powered, and power interface 06 is powered to effect device 4.Power interface 04 is general supply interface.
It wherein, further include voltage detecting circuit.The input voltage of voltage detecting circuit is 12V, is connect with general supply interface.
After having electrode capacitance EC2, having electrode capacitance EC8 and non-polar capacitor C32 voltage regulation filtering, then by resistance R15 be depressured after with three ends
The input terminal of linear regulator chip U3 is electrically connected.The output end of resistance R15 is connected with non-polar capacitor C9 filtering voltage regulation.Wherein,
The model 78L05 of three linear voltage stabilizing chip U3, output end are connect with the power supply end feet VDD of power management chip U8.It is excellent
Choosing, the power supply end feet VDD of power management chip U8 is 5V, and is equipped with non-polar capacitor C7 voltage regulation filtering.In addition, input voltage
After having electrode capacitance EC2, having electrode capacitance EC8 and non-polar capacitor C32 voltage regulation filtering, it is connected with after R14 is depressured and power supply
The end feet P70/AD5/CLK connection of managing chip, for detecting input voltage.Wherein, the end feet P70/ of power management chip
AD5/CLK is grounded by resistance R19 and non-polar capacitor C8.
In conclusion the present invention by power circuit set into multiplexer (MUX, degree of integration is high, and small in size, wiring is few；
In addition, production cost is low, it is easy for installation.
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 multiplexer (MUX of music, which is characterized in that including shell, the control circuit that is set in the housing；The shell
Body is equipped with several key switches and interface；The interface includes signaling interface and power interface；The control circuit includes electricity
Source circuit, signal switching circuit；The signal switching circuit is equipped with control unit；Described control unit is equipped with managing chip,
Model STC11F08XE；The signaling interface and signal switching circuit are electrically connected；The power interface and power circuit electricity
Property connection.
2. a kind of multiplexer (MUX of music according to claim 1, which is characterized in that the signaling interface includes master
Signal input interface, main signal output interface, and several height being set between main signal interface and main output signal interface
Signal output interface；The subsignal output interface is electrically connected with corresponding effect device.
3. a kind of multiplexer (MUX of music according to claim 2, which is characterized in that the key switch is set to master
Between signal input interface and subsignal output interface, to control the closing or opening of corresponding subsignal output interface, so that
Signal is exported by the effect device of various combination from main signal output interface.
4. a kind of multiplexer (MUX of music according to claim 3, which is characterized in that the main signal input interface
Relay is equipped between subsignal output interface；The relay and managing chip are electrically connected；The relay controls phase
The closing or opening for the subsignal output interface answered, so that signal is defeated from main signal output interface by the effect device of various combination
Out.
5. a kind of multiplexer (MUX of music according to claim 4, which is characterized in that the subsignal output interface
It is four, the relay is four；The anode of the relay is electrically connected with the power supply, cathode respectively with managing chip end feet
P2.0, P2.1, P2.2, P2.3 are electrically connected.Protection circuit is equipped between positive electrode and negative electrode；The protection circuit includes resistance R1
Or resistance R2 or resistance R3 or resistance R4 or resistance R5, between resistance output end and cathode be equipped with diode D1 or D2 or D3 or
D4 prevents from burning out chip.
6. a kind of multiplexer (MUX of music according to claim 1, which is characterized in that described control unit is additionally provided with
Display screen, edit key and saving button；The display screen, edit key and saving button and managing chip are electrically connected.Institute
P0.0, P0.1, P0.2, P0.3, P0.4, P0.5, P0.6, the P0.7 for stating display screen and managing chip are electrically connected；The editor
The P1.7 of key and managing chip is electrically connected；The P1.6 of the saving button and managing chip is electrically connected.
7. a kind of multiplexer (MUX of music according to claim 6, which is characterized in that the key switch includes group
Arrange channel switching switch, four channel switch and auxiliary signal output switch；Described group of column channel switching switch and managing chip
P1.2 be electrically connected；Four switching channels electrically connect with P1.0, P4.6, P4.1, P4.5 end feet of managing chip respectively
It connects；The P1.1 end feet of the auxiliary signal output switch and managing chip is electrically connected.
8. a kind of multiplexer (MUX of music according to claim 1, which is characterized in that the power circuit includes
Metal-oxide-semiconductor H-bridge drive circuit, power management chip and multi-path isolated decompression voltage regulator；The model of the power management chip
For EM78P301N -1；The output end of the metal-oxide-semiconductor H-bridge drive circuit and AD1, AD4 of managing chip are electrically connected.
9. a kind of multiplexer (MUX of music according to claim 1, which is characterized in that the multi-path isolated decompression
Voltage regulator circuit provides electric power to effect device by power interface；The multi-path isolated decompression voltage regulator includes high frequency transformation
Device, the Rectifying Schottky diodes being connect with high frequency transformer, the capacitor of power filter, three linear voltage stabilizing chips；Described three
Linear voltage stabilizing chip output end is connect after multiple filter capacitors with power interface.
10. the multiplexer (MUX of described in any item a kind of music according to claim 1-9, which is characterized in that the shell
Including upper housing and lower case；The key is opened being fixed on upper housing and extends to hull outside；The signaling interface and electricity
Source interface is set to upper housing, and closely arranges.
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| CN201811073602.4A CN108966542A (en) | 2018-09-14 | 2018-09-14 | A kind of multiplexer (MUX of music |
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| CN206042258U (en) * | 2016-08-08 | 2017-03-22 | 东莞市文诺电子科技有限公司 | Construction improvement's preceding stage effect ware |
| CN206559231U (en) * | 2016-10-09 | 2017-10-13 | 贾春桐 | Effect device power supply adaptor |
| CN209250950U (en) * | 2018-09-14 | 2019-08-13 | 深圳市威拓思音乐有限公司 | A kind of multiplexer (MUX of music |
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