CN204103879U - Audio signal source - Google Patents
Audio signal source Download PDFInfo
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- CN204103879U CN204103879U CN201420650343.8U CN201420650343U CN204103879U CN 204103879 U CN204103879 U CN 204103879U CN 201420650343 U CN201420650343 U CN 201420650343U CN 204103879 U CN204103879 U CN 204103879U
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- circuit
- audio signal
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- potentiometer
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Abstract
The utility model provides a kind of audio signal source, and its feature comprises: 6V DC power supply, multi-resonant oscillating circuit, audio signal output regulating circuitry; Described multi-resonant oscillating circuit is made up of time-base circuit IC1, resistance R1, resistance R2, electric capacity C1 and electric capacity C2, and the model that time-base circuit IC1 selects is NE555; Described audio signal output regulating circuitry is made up of electrochemical capacitor C3, potentiometer RP, time-base circuit IC1 the 3rd pin connects electrochemical capacitor C3 positive pole, electrochemical capacitor C3 negative pole connects potentiometer RP one end, potentiometer RP activity termination audio signal output terminal OUT, potentiometer RP other end connection circuit ground GND.Core parts of the present utility model adopt time-base circuit to form multi-resonant oscillating circuit, made audio signal source, measure the relevant technologies data of sound equipment or low-frequency channel with it with it.It is succinct that the utility model has circuit structure, and exempt from the advantages such as debugging.
Description
Technical field
The utility model belongs to electronics and power technique fields, is about a kind of audio signal source.
Background technology
Debugging or keeping in repair in the process of the equipment such as sound equipment, low-frequency channel, audio signal source has extremely important effect in the technical indicator measurement of these equipment.In fact common audio signal generator is exactly a low-frequency oscillatory network, and oscillating circuit kind mainly contains: LC oscillator; RC oscillator etc.Core parts of the present utility model adopt time-base circuit to form multi-resonant oscillating circuit, made audio signal source, measure the relevant technologies data of sound equipment or low-frequency channel with it with it.
Although audio signal generator function admirable professional on market, there are high, the general Electronics personnel of price and be difficult to the defects such as acceptance.In order to overcome and address these problems, develop that a kind of circuit structure is succinct, stable work in work, cheap, handy audio signal source are necessary.It is succinct that the utility model has circuit structure, and exempt from the advantage of debugging.
Below describe the core technology content that audio signal source described in the utility model is involved in implementation process in detail.
Utility model content
Goal of the invention and beneficial effect: debugging or keeping in repair in the process of the equipment such as sound equipment, low-frequency channel, audio signal source has extremely important effect in the technical indicator measurement of these equipment.In fact common audio signal generator is exactly a low-frequency oscillatory network, and oscillating circuit kind mainly contains: LC oscillator; RC oscillator etc.Core parts of the present utility model adopt time-base circuit to form multi-resonant oscillating circuit, made audio signal source, measure the relevant technologies data of sound equipment or low-frequency channel with it with it.Although audio signal generator function admirable professional on market, there are high, the general Electronics personnel of price and be difficult to the defects such as acceptance.It is succinct that the utility model has circuit structure, and exempt from advantages such as debugging, price is low.
Circuit working principle: audio signal source can be used for measurement to various voicefrequency circuit signal and maintenance.When after connection 6V DC power supply, time-base circuit IC1 starts to form audio oscillation, and audio signal is by electrochemical capacitor C2 coupling output.Its oscillatory process is: first charged to electric capacity C1 by resistance R1, resistance R2, when voltage on electric capacity C1 reach about 2/3 direct current power source voltage time, time-base circuit IC1 output the 3rd pin becomes low level from high level.7th pin of time-base circuit IC1 is to the 1st pin conducting, and then electric capacity C1 is discharged by resistance R2, and when the voltage drop on electric capacity C1 is to about 1/3 direct current power source voltage, the 7th pin of time-base circuit IC1 ends the 1st pin, and the 3rd pin of time-base circuit IC1 exports and becomes high level.As mentioned above, electric capacity C1 repeats charging ~ electric discharge and forms audio oscillation.Output oscillator signal high level is close to direct current power source voltage, and low level is close to 0V.Regulator potentiometer RP resistance can change the size of output audio signal.Frequency of oscillation is about 1.44/ (R1+2R2), provides components and parts technical parameter according to embodiment, and the frequency of oscillation of voicefrequency circuit is about 680Hz.
Accompanying drawing explanation
Accompanying drawing 1 is the embodiment circuit working schematic diagram that the utility model provides an audio signal source.
Embodiment
According to the audio signal source circuit working schematic diagram shown in accompanying drawing 1 and accompanying drawing explanation, and according to annexation between components and parts in each several part circuit described in utility model content, and components and parts technical parameter described in execution mode requires and circuit production main points are carried out enforcement and can be realized the utility model, is further described correlation technique of the present utility model below in conjunction with embodiment.
Technical characteristic: audio signal source, it comprises 6V DC power supply, multi-resonant oscillating circuit, audio signal output regulating circuitry, it is characterized in that:
Multi-resonant oscillating circuit: it is made up of time-base circuit IC1, resistance R1, resistance R2, electric capacity C1 and electric capacity C2, the model that time-base circuit IC1 selects is NE555, time-base circuit IC1 the 2nd pin and the 6th pin connect electric capacity C1 one end and resistance R2 one end, another termination time-base circuit of resistance R2 IC1 the 7th pin and resistance R1 one end, resistance R1 other end connection circuit positive pole VCC, time-base circuit IC1 the 4th pin and the 8th pin connection circuit positive pole VCC, the electric capacity C1 other end and time-base circuit IC1 the 1st pin connection circuit ground GND, time-base circuit IC1 the 5th pin by electric capacity C2 connection circuit ground GND;
Audio signal output regulating circuitry: it is made up of electrochemical capacitor C3, potentiometer RP, time-base circuit IC1 the 3rd pin connects electrochemical capacitor C3 positive pole, electrochemical capacitor C3 negative pole connects potentiometer RP one end, potentiometer RP activity termination audio signal output terminal OUT, potentiometer RP other end connection circuit ground GND;
The positive pole connection circuit positive pole VCC of 6V DC power supply, the negative pole connection circuit ground GND of 6V DC power supply.
Components and parts title and important technological parameters
| Element number | Components and parts title | Model or index | Quantity | Remarks |
| IC1 | Time-base circuit | NE555, dual inline type | 1 | DIP, 8 pins |
| R1 | Metalfilmresistor | 47KΩ | 1 | 1/4W |
| R2 | Metalfilmresistor | 100KΩ | 1 | 1/4W |
| C1 | Electric capacity | 0.01μF | 1 | Vertical |
| C2 | Electric capacity | 0.01μF | 1 | Vertical |
| C3 | Electrochemical capacitor | 2.2μF/10V | 1 | Vertical |
| RP | Potentiometer | 6.8KΩ | 1 | Vertical |
IC1 is time-base circuit, and the model selected is NE555, or selects KA555; Time-base circuit IC1 is that 8 pin dual inline type DIP encapsulate, and each pin function is: the 1st pin is circuit ground GND; 2nd pin is trigger end; 3rd pin output; 4th pin preset end; 5th pin is control voltage; 6th pin thresholding (threshold value); 7th pin is discharge end; 8th pin connection circuit positive pole VCC.
Circuit production main points and circuit debugging
Because the circuit structure of audio signal source is fairly simple, comparison is easy, as long as the electronic devices and components performance generally selected is intact, and the components and parts annexation to specifications in accompanying drawing 1 is welded, physical connection line and welding quality are through carefully checking correctly, and circuit of the present utility model does not substantially need to carry out debugging and can normally work;
The outward appearance of circuit components layout of the present utility model, board design, audio signal source and size etc. are not key technologies of the present utility model, neither the claimed technology contents of the utility model, therefore illustrate no longer one by one in the description.
Claims (1)
1. an audio signal source, it comprises 6V DC power supply, multi-resonant oscillating circuit, audio signal output regulating circuitry, it is characterized in that:
Described multi-resonant oscillating circuit is made up of time-base circuit IC1, resistance R1, resistance R2, electric capacity C1 and electric capacity C2, the model that time-base circuit IC1 selects is NE555, time-base circuit IC1 the 2nd pin and the 6th pin connect electric capacity C1 one end and resistance R2 one end, another termination time-base circuit of resistance R2 IC1 the 7th pin and resistance R1 one end, resistance R1 other end connection circuit positive pole VCC, time-base circuit IC1 the 4th pin and the 8th pin connection circuit positive pole VCC, the electric capacity C1 other end and time-base circuit IC1 the 1st pin connection circuit ground GND, time-base circuit IC1 the 5th pin by electric capacity C2 connection circuit ground GND;
Described audio signal output regulating circuitry is made up of electrochemical capacitor C3, potentiometer RP, time-base circuit IC1 the 3rd pin connects electrochemical capacitor C3 positive pole, electrochemical capacitor C3 negative pole connects potentiometer RP one end, potentiometer RP activity termination audio signal output terminal OUT, potentiometer RP other end connection circuit ground GND;
The positive pole connection circuit positive pole VCC of described 6V DC power supply, the negative pole connection circuit ground GND of 6V DC power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420650343.8U CN204103879U (en) | 2014-11-02 | 2014-11-02 | Audio signal source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420650343.8U CN204103879U (en) | 2014-11-02 | 2014-11-02 | Audio signal source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204103879U true CN204103879U (en) | 2015-01-14 |
Family
ID=52272278
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420650343.8U Expired - Fee Related CN204103879U (en) | 2014-11-02 | 2014-11-02 | Audio signal source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204103879U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104363007A (en) * | 2014-11-02 | 2015-02-18 | 王志 | Audio signal source |
-
2014
- 2014-11-02 CN CN201420650343.8U patent/CN204103879U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104363007A (en) * | 2014-11-02 | 2015-02-18 | 王志 | Audio signal source |
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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: 20150114 Termination date: 20151102 |
|
| EXPY | Termination of patent right or utility model |