CN204859531U - A electron circuit of raising one's voice for intelligent house - Google Patents
A electron circuit of raising one's voice for intelligent house Download PDFInfo
- Publication number
- CN204859531U CN204859531U CN201520572271.4U CN201520572271U CN204859531U CN 204859531 U CN204859531 U CN 204859531U CN 201520572271 U CN201520572271 U CN 201520572271U CN 204859531 U CN204859531 U CN 204859531U
- Authority
- CN
- China
- Prior art keywords
- circuit
- electric capacity
- integrated circuit
- transformer
- audio
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Amplifiers (AREA)
Abstract
The utility model relates to an electron circuit of raising one's voice for intelligent house, including audio input circuit, audio frequency treatment circuit and audio output circuit, the audio output circuit passes through audio frequency treatment circuit and audio input circuit connection, the audio output circuit includes microphone connector and the second transformer, the second transformer is equipped with input of the same kind and output of the same kind, the second transformer's output and microphone connector are connected, the audio frequency treatment circuit includes an integrated circuit, first electric capacity, a controlling resistor and the 2nd controlling resistor, through the passive audio frequency compensating network in the audio frequency treatment circuit among this an electron circuit of raising one's voice for intelligent house, there is reduction noise to audio signal, promote the function of high bass, impedance match through audio input circuit and audio output circuit works simultaneously, and the reliability of the circuit is enhanced, and all adopted low temperature to float the electric capacity of coefficient in this circuit, the reliability and the stability of circuit have further been improved.
Description
Technical field
The utility model relates to a kind of electronics loudspeaker circuit for Smart Home.
Background technology
Along with the development of science and technology and the simultaneously progressive of society, power electronic technology have also been obtained and develops fast, and particularly in Smart Home field, people are also increasing for the dependence of power electronic technology.
In loudspeaker circuit at home, because present external wireless interference is more, result in loudspeaker circuit and often send noise because of the interference of signal, cause discomfort acoustically.
Utility model content
The technical problems to be solved in the utility model is: in order to overcome the deficiency of prior art for interference signal filtering, provide a kind of have reduce noise jamming and the high electronics loudspeaker circuit for Smart Home of stability.
The utility model solves the technical scheme that its technical problem adopts: a kind of electronics loudspeaker circuit for Smart Home, comprise audio input circuit, audio frequency processing circuit and audio output circuit, described audio output circuit is connected with audio input circuit by audio frequency processing circuit, described audio output circuit comprises microphone connector and the second transformer, described second transformer is provided with a road input and a road exports, the output of described second transformer is connected with microphone connector, described audio frequency processing circuit comprises the first integrated circuit, first electric capacity, second electric capacity, 3rd electric capacity, 4th electric capacity, 5th electric capacity, 6th electric capacity, 7th electric capacity, first resistance, second resistance, 3rd resistance, first adjustable resistance and the second adjustable resistance, the model of described first integrated circuit is TDA2822, second end of described first integrated circuit is by the 7th capacity earth, the external 5V DC voltage power supply of second end of described first integrated circuit, 4th end ground connection of described first integrated circuit, 3rd end of described first integrated circuit is connected with the first end of the first integrated circuit by the input of the second transformer, 3rd end of described first integrated circuit passes through the series circuit ground connection of the second resistance and the 5th electric capacity composition, the series circuit ground connection of the 3rd resistance of the first end of described first integrated circuit and the 6th electric capacity composition, the five terminal of described first integrated circuit is connected with the 8th end of the first integrated circuit by the 3rd electric capacity, 8th end of described first integrated circuit is by the 4th capacity earth, 6th end of described first integrated circuit is connected with the 7th end of the first integrated circuit by the first resistance, 6th end of described first integrated circuit is connected with the adjustable end of the first adjustable resistance with the parallel circuits that the second electric capacity forms by the second adjustable resistance, 6th end of described first integrated circuit is connected with the adjustable end of the second adjustable resistance, described audio input circuit comprises microphone and the first transformer, described first transformer is provided with a road input and a road exports, the input of described first transformer is connected with microphone, 7th end of described first integrated circuit passes through the output of the first transformer, the series circuit ground connection of the first adjustable resistance and the first electric capacity composition.
As preferably, in order to improve the voltage isolation capabilities of circuit, thus improve the reliability of circuit, one end ground connection of described microphone, the ground of the 4th termination of the ground that described microphone connects and the first integrated circuit is mutually isolated.
As preferably, in order to improve the stability of circuit, the temperature drift coefficient of described first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity and the 7th electric capacity is 5%ppm.
The beneficial effects of the utility model are, this is used in the electronics loudspeaker circuit of Smart Home by the passive audio frequency compensating network in audio frequency processing circuit, reduction noise jamming is had to audio signal, promote the function of high bass, simultaneously by the impedance matching work of audio input circuit and audio output circuit, improve the reliability of circuit, and all have employed the electric capacity of Low Drift Temperature coefficient in this circuit, further increase the reliability and stability of circuit.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 is the circuit theory diagrams of the electronics loudspeaker circuit for Smart Home of the present utility model;
In figure: A. audio input circuit, B. audio frequency processing circuit, C. audio output circuit, T1. first transformer, T2. the second transformer, Y. microphone, JK. microphone connector, U1. first integrated circuit, C1. the first electric capacity, C2. second electric capacity, C3. the 3rd electric capacity, C4. the 4th electric capacity, C5. the 5th electric capacity, C6. the 6th electric capacity, C7. the 7th electric capacity, R1. first resistance, R2. second resistance, R3. the 3rd resistance, Rp1. first adjustable resistance, Rp2. second adjustable resistance.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
As shown in Figure 1, a kind of electronics loudspeaker circuit for Smart Home, comprise audio input circuit A, audio frequency processing circuit B and audio output circuit C, described audio output circuit C is connected with audio input circuit A by audio frequency processing circuit B, described audio output circuit C comprises microphone connector JK and the second transformer T2, described second transformer T2 is provided with a road input and a road exports, the output of described second transformer T2 is connected with microphone connector JK, described audio frequency processing circuit B comprises the first integrated circuit U1, first electric capacity C1, second electric capacity C2, 3rd electric capacity C3, 4th electric capacity C4, 5th electric capacity C5, 6th electric capacity C6, 7th electric capacity C7, first resistance R1, second resistance R2, 3rd resistance R3, first adjustable resistance Rp1 and the second adjustable resistance Rp2, the model of described first integrated circuit U1 is TDA2822, second end of described first integrated circuit U1 is by the 7th electric capacity C7 ground connection, the external 5V DC voltage power supply of second end of described first integrated circuit U1, the 4th end ground connection of described first integrated circuit U1, 3rd end of described first integrated circuit U1 is connected with the first end of the first integrated circuit U1 by the input of the second transformer T2, 3rd end of described first integrated circuit U1 passes through the series circuit ground connection of the second resistance R2 and the 5th electric capacity C5 composition, the series circuit ground connection that 3rd resistance R3 of the first end of described first integrated circuit U1 and the 6th electric capacity C6 forms, the five terminal of described first integrated circuit U1 is connected with the 8th end of the first integrated circuit U1 by the 3rd electric capacity C3, 8th end of described first integrated circuit U1 is by the 4th electric capacity C4 ground connection, 6th end of described first integrated circuit U1 is connected with the 7th end of the first integrated circuit U1 by the first resistance R1, 6th end of described first integrated circuit U1 is connected with the adjustable end of the first adjustable resistance Rp1 with the parallel circuits that the second electric capacity C2 forms by the second adjustable resistance Rp2, 6th end of described first integrated circuit U1 is connected with the adjustable end of the second adjustable resistance Rp2, described audio input circuit A comprises microphone Y and the first transformer T1, described first transformer T1 is provided with a road input and a road exports, the input of described first transformer T1 is connected with microphone Y, 7th end of described first integrated circuit U1 passes through the output of the first transformer T1, the series circuit ground connection that first adjustable resistance Rp1 and the first electric capacity C1 forms.
As preferably, in order to improve the voltage isolation capabilities of circuit, thus improve the reliability of circuit, one end ground connection of described microphone Y, the ground of the 4th termination of the ground that described microphone Y connects and the first integrated circuit U1 is mutually isolated.
As preferably, in order to improve the stability of circuit, the temperature drift coefficient of described first electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4, the 5th electric capacity C5, the 6th electric capacity C6 and the 7th electric capacity C7 is 5%ppm.
This is used for input stage in the electronics loudspeaker circuit of Smart Home is microphone Y, receive the sound of performer on stage, and convert the signal of telecommunication to by the voice coil loudspeaker voice coil of microphone Y, send into the first transformer Tl input and carry out impedance matching, then export feeding next stage by output and carry out audio frequency amplification.Before amplification, by the first adjustable resistance RP1 and the first electric capacity C1, the passive audio frequency compensating network formed with the second adjustable resistance RP2 and the second electric capacity C2, its function has reduction noise jamming, promotes high bass, and post-amplifier forms BTL power amplifier by the first integrated circuit U1, the audio signal exported is Low ESR, input the second transformer T2 and carry out impedance transformation, the output of the second transformer T2 exports as high impedance, can mate with the microphone Y input of enlarger equipment.As long as microphone connector JK plug is inserted microphone socket during work.
Compared with prior art, this is used in the electronics loudspeaker circuit of Smart Home by the passive audio frequency compensating network in audio frequency processing circuit B, reduction noise jamming is had to audio signal, promote the function of high bass, simultaneously by the impedance matching work of audio input circuit A and audio output circuit C, improve the reliability of circuit, and all have employed the electric capacity of Low Drift Temperature coefficient in this circuit, further increase the reliability and stability of circuit.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on specification, must determine its technical scope according to right.
Claims (3)
1. the electronics loudspeaker circuit for Smart Home, it is characterized in that, comprise audio input circuit (A), audio frequency processing circuit (B) and audio output circuit (C), described audio output circuit (C) is connected with audio input circuit (A) by audio frequency processing circuit (B), described audio output circuit (C) comprises microphone connector (JK) and the second transformer (T2), described second transformer (T2) is provided with a road input and a road exports, the output of described second transformer (T2) is connected with microphone connector (JK), described audio frequency processing circuit (B) comprises the first integrated circuit (U1), first electric capacity (C1), second electric capacity (C2), 3rd electric capacity (C3), 4th electric capacity (C4), 5th electric capacity (C5), 6th electric capacity (C6), 7th electric capacity (C7), first resistance (R1), second resistance (R2), 3rd resistance (R3), first adjustable resistance (Rp1) and the second adjustable resistance (Rp2), the model of described first integrated circuit (U1) is TDA2822, second end of described first integrated circuit (U1) is by the 7th electric capacity (C7) ground connection, the external 5V DC voltage power supply of second end of described first integrated circuit (U1), 4th end ground connection of described first integrated circuit (U1), 3rd end of described first integrated circuit (U1) is connected with the first end of the first integrated circuit (U1) by the input of the second transformer (T2), the series circuit ground connection that 3rd end of described first integrated circuit (U1) consists of the second resistance (R2) and the 5th electric capacity (C5), the series circuit ground connection that 3rd resistance (R3) of the first end of described first integrated circuit (U1) and the 6th electric capacity (C6) form, the five terminal of described first integrated circuit (U1) is connected with the 8th end of the first integrated circuit (U1) by the 3rd electric capacity (C3), 8th end of described first integrated circuit (U1) is by the 4th electric capacity (C4) ground connection, 6th end of described first integrated circuit (U1) is connected with the 7th end of the first integrated circuit (U1) by the first resistance (R1), 6th end of described first integrated circuit (U1) is connected with the adjustable end of the first adjustable resistance (Rp1) with the parallel circuits that the second electric capacity (C2) forms by the second adjustable resistance (Rp2), 6th end of described first integrated circuit (U1) is connected with the adjustable end of the second adjustable resistance (Rp2), described audio input circuit (A) comprises microphone (Y) and the first transformer (T1), described first transformer (T1) is provided with a road input and a road exports, the input of described first transformer (T1) is connected with microphone (Y), 7th end of described first integrated circuit (U1) passes through the output of the first transformer (T1), the series circuit ground connection that first adjustable resistance (Rp1) and the first electric capacity (C1) form.
2. as claimed in claim 1 for the electronics loudspeaker circuit of Smart Home, it is characterized in that, one end ground connection of described microphone (Y), the ground of the 4th termination of the ground that described microphone (Y) connects and the first integrated circuit (U1) is mutually isolated.
3. as claimed in claim 1 for the electronics loudspeaker circuit of Smart Home, it is characterized in that, the temperature drift coefficient of described first electric capacity (C1), the second electric capacity (C2), the 3rd electric capacity (C3), the 4th electric capacity (C4), the 5th electric capacity (C5), the 6th electric capacity (C6) and the 7th electric capacity (C7) is 5%ppm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520572271.4U CN204859531U (en) | 2015-07-31 | 2015-07-31 | A electron circuit of raising one's voice for intelligent house |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520572271.4U CN204859531U (en) | 2015-07-31 | 2015-07-31 | A electron circuit of raising one's voice for intelligent house |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204859531U true CN204859531U (en) | 2015-12-09 |
Family
ID=54750041
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520572271.4U Expired - Fee Related CN204859531U (en) | 2015-07-31 | 2015-07-31 | A electron circuit of raising one's voice for intelligent house |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204859531U (en) |
-
2015
- 2015-07-31 CN CN201520572271.4U patent/CN204859531U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104333333B (en) | A kind of single-ended amplifier and its noise cancellation method | |
| CN102118668B (en) | Loudspeaker system and loudspeaker driving circuit | |
| CN204859531U (en) | A electron circuit of raising one's voice for intelligent house | |
| CN109962685A (en) | Wideband turns impedance amplifier circuit | |
| CN203933898U (en) | A kind of VGA CARD is eliminated circuit and active noise reduction earphone | |
| CN202014236U (en) | Input/output isolation module | |
| CN205430183U (en) | Intercom audio power amplifier circuit | |
| CN206117993U (en) | Audio frequency ground keeps apart differential circuit and audio amplifier | |
| CN204103866U (en) | 900MHz frequency range single-ended configuration low noise amplifier | |
| CN203225871U (en) | Simplified audio frequency amplification circuit | |
| CN203968074U (en) | A kind of Novel Filter circuit | |
| CN203608158U (en) | Ultralow noise analog amplifier of three-dimensional resistivity acquiring system | |
| CN208540147U (en) | A kind of digital audio power amplification system | |
| CN206196037U (en) | Electrodeless adjusting module of microphone signal | |
| CN107181997A (en) | A kind of audio de-noising circuit and with wheat audio amplifier | |
| CN201854247U (en) | Impedance matching power amplification output circuit | |
| CN203491980U (en) | High-fidelity audio power amplification integrated circuit | |
| CN204578484U (en) | A kind of amplifying circuit strengthened for electric capacity miaow head signal | |
| CN110120796B (en) | Voice signal amplifying and filtering circuit | |
| CN215871821U (en) | Multifunctional wireless microphone based on NFC pairing | |
| CN203813946U (en) | Natural sound effect processing circuit | |
| CN106454636A (en) | Amplifying device used for audio equipment | |
| CN203851106U (en) | Wave filter line | |
| CN103825560B (en) | For the signal amplification circuit of satellite audio | |
| CN208241861U (en) | high-fidelity omnidirectional microphone |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20160731 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |