CN204906807U - Sound console level display module - Google Patents
Sound console level display module Download PDFInfo
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- CN204906807U CN204906807U CN201520653368.8U CN201520653368U CN204906807U CN 204906807 U CN204906807 U CN 204906807U CN 201520653368 U CN201520653368 U CN 201520653368U CN 204906807 U CN204906807 U CN 204906807U
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Abstract
The utility model discloses a sound console level display module, including active rectifier circuit, single chip circuit and LED circuit, sound console output level is connected to active rectifier circuit's input, and single chip circuit, LED circuit and singlechip circuit connection are connected to the output, the single chip circuit includes the M37549 chip, and 1 foot, 2 feet, 3 feet and 4 feet of M37549 chip are connected active rectifier circuit, 19 foot, 18 feet, 11 feet, 20 feet, 24 feet, 13 feet, 12 feet, 15 feet, 16 feet and 17 feet and are connected the LED circuit. After active rectifier circuit changed the audio signal of sound console into the DC level signal, the AD who gives the M37549 singlechip inputed, through procedure operation back, finally lighted emitting diode with scan driving's mode. This scheme is applicable to all sound console circuit.
Description
Technical field
The utility model relates to sound console status indicating device, especially relates to a kind of sound console level display module.
Background technology
Sound console has output level display circuit, the level value of display is used to teaching process person, the level value of current sound console output signal.
In early days, the general VU of use table shows level, and UV table is a kind of gauge outfit display mode of machinery.Use VU table, the peripheral circuit simplicity of design of level display, but VU table has a lot of shortcoming, greatly, because these two defects, VU table is progressively eliminated, and the substitute is the mode of LED light-emitting diode for such as mechanical structure poor reliability, volume.
Use multiple light-emitting diode arranged side by side, be arranged in strip, and represent no level value with green, yellow, red light-emitting diode, display is both directly perceived and more beautiful than VU table.
The flat table-driven circuit of traditional LED electrical, uses LM339 comparator circuit, a LM339 chip, there are 4 comparator ports, the LED electrical flat table show bar of one two 12 sections, just needs 24 comparator ports, altogether 6 LM339 chips, circuit is more loaded down with trivial details, components and parts are many, and the reliability of circuit is not very high, in the light-emitting diode of often connecting, if one of them luminous tube has been broken, subsequent light-emitting diode just can not be lit.And after light-emitting diode series connection, total conduction voltage drop is larger, reaches 1.7V*12=20.4V, needs the power voltage supply of use ± 15V.If the audio frequency apparatus that a low dc voltage is powered, such as supply power voltage only has 5V, so just can not use this circuit.
Summary of the invention
The utility model mainly solves the technical problem that circuit existing for prior art is complicated, reliability is low, can not use low voltage power supply etc., provides that a kind of circuit is simple, reliability is high, can use the sound console level display module of low-voltage power supply.
The utility model is mainly solved by following technical proposals for above-mentioned technical problem: a kind of sound console level display module, comprise active rectifying circuit, single chip circuit and LED circuit, the input of described active rectifying circuit connects sound console output level, output connects single chip circuit, and LED circuit is connected with single chip circuit; Single chip circuit comprises M37549 chip, and 1 pin of M37549 chip, 2 pin, 3 pin are connected active rectifying circuit with 4 pin, and 19 pin, 18 pin, 11 pin, 20 pin, 24 pin, 13 pin, 12 pin, 15 pin, 16 pin are connected LED circuit with 17 pin.
After active rectifying circuit changes into DC level signal the audio signal of sound console, give the A/D input of M37549 single-chip microcomputer, after sequential operation, finally light light-emitting diode in the mode of turntable driving.
As preferably, active rectifying circuit comprises L channel rectification circuit and R channel rectification circuit, and described L channel rectification circuit comprises electric capacity C7, electric capacity C9, resistance R20, resistance R24, resistance R26, resistance R28, resistance R32, diode D5, diode D7, voltage stabilizing didoe ZD1 and operational amplifier; The first end of described resistance R24 is connected to the L channel of sound console output level by resistance C7, the second end is connected to the inverting input of operational amplifier, the in-phase input end ground connection of operational amplifier, and output connects the positive pole of diode D7; The inverting input of the positive pole concatenation operation amplifier of diode D5, the output of negative pole concatenation operation amplifier; The inverting input of resistance R26 one end concatenation operation amplifier, the other end connects the negative pole of diode D7; The first end of resistance R20 connects the negative pole of diode D7, and the second end connects 2 pin of M37549 chip; The first end of resistance R28 connects the negative pole of diode D7, and the second end connects 1 pin of M37549 chip; Second end of the first end contact resistance R20 of resistance R32, the second end ground connection of resistance R32; The first end of electric capacity C9 connects the negative pole of diode D7, the second end ground connection; The plus earth of voltage stabilizing didoe ZD1, second end of negative pole contact resistance R28; The structure of R channel rectification circuit is identical with the structure of L channel rectification circuit.
As preferably, described LED circuit comprises 24 light-emitting diodes, and LED 5, LED 6, LED 7 are connected 24 pin of M37549 chip with the negative pole of LED 8; LED 9, LED 10, LED 11 are connected 13 pin of M37549 chip with the negative pole of LED 12; LED 13, LED 14, LED 15 are connected 12 pin of M37549 chip with the negative pole of LED 16; LED 17, LED 18, LED 19 are connected 15 pin of M37549 chip with the negative pole of LED 20; LED 21, LED 22, LED 23 are connected 16 pin of M37549 chip with the negative pole of LED 24; LED 25, LED 26, LED 27 are connected 17 pin of M37549 chip with the negative pole of LED 28; The positive pole of LED 5, LED 9, LED 13 and LED 17, LED 21, LED 25 is all connected to the first end of resistance R2, and second end of resistance R2 connects 19 pin of M37549 chip; The positive pole of LED 7, LED 11, LED 15 and LED 19, LED 23, LED 27 is all connected to the first end of resistance R3, and second end of resistance R3 connects 18 pin of M37549 chip; The positive pole of LED 8, LED 12, LED 16 and LED 20, LED 24, LED 28 is all connected to the first end of resistance R4, and second end of resistance R4 connects 11 pin of M37549 chip; The positive pole of LED 6, LED 10, LED 14 and LED 18, LED 22, LED 26 is all connected to the first end of resistance R9, and second end of resistance R9 connects 20 pin of M37549 chip.
Light-emitting diode is lighted under the control of single-chip microcomputer, and can realize peak value display stop.
The beneficial effect that the utility model brings is, circuit structure is simple, and the components and parts of use are few, and reliability is high, and cost is low, can use low-voltage power supply.
Accompanying drawing explanation
Fig. 1 is a kind of structured flowchart of the present utility model;
Fig. 2 is a kind of single chip circuit figure of the present utility model;
Fig. 3 is a kind of L channel rectification circuit figure of the present utility model;
Fig. 4 is a kind of LED circuit figure of the present utility model;
In figure: 1, active rectifying circuit, 2, single chip circuit, 3, LED circuit.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: a kind of sound console level display module of the present embodiment, as shown in Figure 1, comprise active rectifying circuit 1, single chip circuit 2 and LED circuit 3, the input of described active rectifying circuit connects sound console output level, output connects single chip circuit, and LED circuit is connected with single chip circuit.
As shown in Figure 2, single chip circuit comprises M37549 chip, and 1 pin of M37549 chip, 2 pin, 3 pin are connected active rectifying circuit with 4 pin, and 19 pin, 18 pin, 11 pin, 20 pin, 24 pin, 13 pin, 12 pin, 15 pin, 16 pin are connected LED circuit with 17 pin.
Active rectifying circuit comprises L channel rectification circuit and R channel rectification circuit, as shown in Figure 3, described L channel rectification circuit comprises electric capacity C7, electric capacity C9, resistance R20, resistance R24, resistance R26, resistance R28, resistance R32, diode D5, diode D7, voltage stabilizing didoe ZD1 and operational amplifier; The first end of described resistance R24 is connected to the L channel of sound console output level by resistance C7, the second end is connected to the inverting input of operational amplifier, the in-phase input end ground connection of operational amplifier, and output connects the positive pole of diode D7; The inverting input of the positive pole concatenation operation amplifier of diode D5, the output of negative pole concatenation operation amplifier; The inverting input of resistance R26 one end concatenation operation amplifier, the other end connects the negative pole of diode D7; The first end of resistance R20 connects the negative pole of diode D7, and the second end connects 2 pin of M37549 chip; The first end of resistance R28 connects the negative pole of diode D7, and the second end connects 1 pin of M37549 chip; Second end of the first end contact resistance R20 of resistance R32, the second end ground connection of resistance R32; The first end of electric capacity C9 connects the negative pole of diode D7, the second end ground connection; The plus earth of voltage stabilizing didoe ZD1, second end of negative pole contact resistance R28.The structure of R channel rectification circuit is identical with the structure of L channel rectification circuit.
As shown in Figure 4, LED circuit comprises 24 light-emitting diodes, and LED 5, LED 6, LED 7 are connected 24 pin of M37549 chip with the negative pole of LED 8; LED 9, LED 10, LED 11 are connected 13 pin of M37549 chip with the negative pole of LED 12; LED 13, LED 14, LED 15 are connected 12 pin of M37549 chip with the negative pole of LED 16; LED 17, LED 18, LED 19 are connected 15 pin of M37549 chip with the negative pole of LED 20; LED 21, LED 22, LED 23 are connected 16 pin of M37549 chip with the negative pole of LED 24; LED 25, LED 26, LED 27 are connected 17 pin of M37549 chip with the negative pole of LED 28; The positive pole of LED 5, LED 9, LED 13 and LED 17, LED 21, LED 25 is all connected to the first end of resistance R2, and second end of resistance R2 connects 19 pin of M37549 chip; The positive pole of LED 7, LED 11, LED 15 and LED 19, LED 23, LED 27 is all connected to the first end of resistance R3, and second end of resistance R3 connects 18 pin of M37549 chip; The positive pole of LED 8, LED 12, LED 16 and LED 20, LED 24, LED 28 is all connected to the first end of resistance R4, and second end of resistance R4 connects 11 pin of M37549 chip; The positive pole of LED 6, LED 10, LED 14 and LED 18, LED 22, LED 26 is all connected to the first end of resistance R9, and second end of resistance R9 connects 20 pin of M37549 chip.
After active rectifying circuit changes into DC level signal the audio signal of sound console, give the A/D input of M37549 single-chip microcomputer, after sequential operation, finally light light-emitting diode in the mode of turntable driving.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ the term such as active rectifying circuit, single chip circuit herein, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.
Claims (3)
1. a sound console level display module, it is characterized in that, comprise active rectifying circuit, single chip circuit and LED circuit, the input of described active rectifying circuit connects sound console output level, output connects single chip circuit, and LED circuit is connected with single chip circuit; Single chip circuit comprises M37549 chip, and 1 pin of M37549 chip, 2 pin, 3 pin are connected active rectifying circuit with 4 pin, and 19 pin, 18 pin, 11 pin, 20 pin, 24 pin, 13 pin, 12 pin, 15 pin, 16 pin are connected LED circuit with 17 pin.
2. a kind of sound console level display module according to claim 1, it is characterized in that, active rectifying circuit comprises L channel rectification circuit and R channel rectification circuit, and described L channel rectification circuit comprises electric capacity C7, electric capacity C9, resistance R20, resistance R24, resistance R26, resistance R28, resistance R32, diode D5, diode D7, voltage stabilizing didoe ZD1 and operational amplifier; The first end of described resistance R24 is connected to the L channel of sound console output level by resistance C7, the second end is connected to the inverting input of operational amplifier, the in-phase input end ground connection of operational amplifier, and output connects the positive pole of diode D7; The inverting input of the positive pole concatenation operation amplifier of diode D5, the output of negative pole concatenation operation amplifier; The inverting input of resistance R26 one end concatenation operation amplifier, the other end connects the negative pole of diode D7; The first end of resistance R20 connects the negative pole of diode D7, and the second end connects 2 pin of M37549 chip; The first end of resistance R28 connects the negative pole of diode D7, and the second end connects 1 pin of M37549 chip; Second end of the first end contact resistance R20 of resistance R32, the second end ground connection of resistance R32; The first end of electric capacity C9 connects the negative pole of diode D7, the second end ground connection; The plus earth of voltage stabilizing didoe ZD1, second end of negative pole contact resistance R28; The structure of R channel rectification circuit is identical with the structure of L channel rectification circuit.
3. a kind of sound console level display module according to claim 1 and 2, it is characterized in that, described LED circuit comprises 24 light-emitting diodes, and LED 5, LED 6, LED 7 are connected 24 pin of M37549 chip with the negative pole of LED 8; LED 9, LED 10, LED 11 are connected 13 pin of M37549 chip with the negative pole of LED 12; LED 13, LED 14, LED 15 are connected 12 pin of M37549 chip with the negative pole of LED 16; LED 17, LED 18, LED 19 are connected 15 pin of M37549 chip with the negative pole of LED 20; LED 21, LED 22, LED 23 are connected 16 pin of M37549 chip with the negative pole of LED 24; LED 25, LED 26, LED 27 are connected 17 pin of M37549 chip with the negative pole of LED 28; The positive pole of LED 5, LED 9, LED 13 and LED 17, LED 21, LED 25 is all connected to the first end of resistance R2, and second end of resistance R2 connects 19 pin of M37549 chip; The positive pole of LED 7, LED 11, LED 15 and LED 19, LED 23, LED 27 is all connected to the first end of resistance R3, and second end of resistance R3 connects 18 pin of M37549 chip; The positive pole of LED 8, LED 12, LED 16 and LED 20, LED 24, LED 28 is all connected to the first end of resistance R4, and second end of resistance R4 connects 11 pin of M37549 chip; The positive pole of LED 6, LED 10, LED 14 and LED 18, LED 22, LED 26 is all connected to the first end of resistance R9, and second end of resistance R9 connects 20 pin of M37549 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520653368.8U CN204906807U (en) | 2015-08-27 | 2015-08-27 | Sound console level display module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520653368.8U CN204906807U (en) | 2015-08-27 | 2015-08-27 | Sound console level display module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204906807U true CN204906807U (en) | 2015-12-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520653368.8U Expired - Fee Related CN204906807U (en) | 2015-08-27 | 2015-08-27 | Sound console level display module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204906807U (en) |
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2015
- 2015-08-27 CN CN201520653368.8U patent/CN204906807U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170927 Address after: Hangzhou City, Zhejiang Province, the 311201 economic and Technological Development Zone Xiaoshan District Road No. 77 Patentee after: Hangzhou Manko Technology Co.,Ltd. Address before: Hangzhou City, Zhejiang Province, the 311201 economic and Technological Development Zone Xiaoshan District Road No. 77 Patentee before: HANGZHOU MANKO ELECTRONICS CO., LTD. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20200827 |
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| CF01 | Termination of patent right due to non-payment of annual fee |