CN205265633U - Anti interfering signal magnification system - Google Patents
Anti interfering signal magnification system Download PDFInfo
- Publication number
- CN205265633U CN205265633U CN201521106594.0U CN201521106594U CN205265633U CN 205265633 U CN205265633 U CN 205265633U CN 201521106594 U CN201521106594 U CN 201521106594U CN 205265633 U CN205265633 U CN 205265633U
- Authority
- CN
- China
- Prior art keywords
- resistance
- chip
- capacitor
- pin
- electric capacity
- 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 discloses an anti interfering signal magnification system, including resistance R1, resistance R2, resistance R3, electric capacity C1, electric capacity C2, chip IC1 and chip IC1, electric capacity C1, electric capacity C2 and signal input part IN are connected to resistance R1's one end, and electric capacity C1's the other end, electric capacity C4, resistance R2, resistance R7 and chip IC1's pin 2, electric capacity C2's other end connecting resistance R2's the other end and chip IC1's pin 1, chip IC1's pin 5 connecting resistance R6 and power VCC are connected to resistance R1's the other end. The utility model discloses audio signal enlargies system circuit simple structure, components and parts are few, has increased filtering high frequency interference's component in the circuit, and simultaneously the circuit adopts the two -stage to have an amplifier of feedback, and consequently the stability of add -on system have with low costs, stable performance and convenient to use's advantage.
Description
Technical field
The utility model relates to signal process field, specifically a kind of anti-jamming signal amplification system.
Background technology
After entering 21 century, various portable electronic equipments become a kind of important development trend of electronic equipment.From the mobile phone as means of communication, to the MP3 player as amusement equipment, become portable that almost everybody possessesFormula electronic equipment. The portable television in addition that will popularize successively, portable DVD player etc. All these portable electricityA common ground of subset, is exactly to have audio frequency output, and namely all needing has a signal amplifier, commonly uses nowThe most complex structure of amplifier circuit for sound frequency signal, volume is large, and in the process of conversion, there is larger decay in less stableAnd interference, and in signal, often there is High-frequency Interference, affect signal quality.
Utility model content
The purpose of this utility model is to provide a kind of anti-jamming signal amplification system, proposes in above-mentioned background technology to solveProblem.
For achieving the above object, the utility model provides following technical scheme:
A kind of anti-jamming signal amplification system, comprises resistance R 1, resistance R 2, resistance R 3, capacitor C 1, capacitor C 2, chipIC1 and chip IC 1, one end of described resistance R 1 connects capacitor C 1, capacitor C 2 and signal input part IN, resistance R 1The other end connects the pin 2 of the other end, capacitor C 4, resistance R 2, resistance R 7 and the chip IC 1 of capacitor C 1, capacitor C 2The other end of other end contact resistance R2 and the pin 1 of chip IC 1, pin 5 contact resistance R6 and the electricity of chip IC 1Source VCC, pin 3 contact resistance R3, resistance R 4 and the capacitor C 3 of chip IC 1, the other end of resistance R 3 connects electric capacityThe pin 4 of the other end, resistance R 5 and the chip IC 1 of C3, the other end of resistance R 4 connects the other end of capacitor C 4, electricityThe other end of resistance R5 connects capacitor C 5, the pin 3 of other end contact resistance R8, capacitor C 6 and the chip IC 2 of capacitor C 5,The other end of other end contact resistance R7 of resistance R 6 and the pin 1 of chip IC 2, the other end of resistance R 8 connects electric capacityThe other end of C6, the pin 4 of chip IC 2 and output OUT, the model of described chip IC 1 and chip IC 2 is LM321.
As preferred version of the present utility model: described power supply VCC is 9V direct current.
Compared with prior art, the beneficial effects of the utility model are: the utility model audio signal amplifying system circuit structureSimply, components and parts are few, have increased the element of filtering High-frequency Interference in circuit, circuit adopts two-stage putting with feedback simultaneouslyLarge device, the stability of increase system, therefore has advantages of that cost is low, stable performance and easy to use.
Brief description of the drawings
Fig. 1 is the circuit diagram of audio signal amplifying system.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out clearlyChu, intactly description, obviously, described embodiment is only the utility model part embodiment, instead of wholeEmbodiment. Based on the embodiment in the utility model, those of ordinary skill in the art are not making under creative work prerequisiteThe every other embodiment obtaining, belongs to the scope that the utility model is protected.
Refer to Fig. 1, a kind of anti-jamming signal amplification system, comprise resistance R 1, resistance R 2, resistance R 3, capacitor C 1,Capacitor C 2, chip IC 1 and chip IC 1, one end of described resistance R 1 connects capacitor C 1, capacitor C 2 and signal input partIN, the other end of resistance R 1 connects the drawing of the other end, capacitor C 4, resistance R 2, resistance R 7 and chip IC 1 of capacitor C 1Pin 2, the other end of other end contact resistance R2 of capacitor C 2 and the pin 1 of chip IC 1, the pin 5 of chip IC 1 connectsConnecting resistance R6 and power supply VCC, pin 3 contact resistance R3, resistance R 4 and the capacitor C 3 of chip IC 1, resistance R 3 anotherOne end connects the pin 4 of the other end, resistance R 5 and the chip IC 1 of capacitor C 3, and the other end of resistance R 4 connects capacitor C 4The other end, the other end of resistance R 5 connects capacitor C 5, other end contact resistance R8, capacitor C 6 and the chip of capacitor C 5The pin 3 of IC2, the other end of other end contact resistance R7 of resistance R 6 and the pin 1 of chip IC 2, resistance R 8 anotherOne end connects the other end of capacitor C 6, pin 4 and the output OUT of chip IC 2, described chip IC 1 and chip IC 2Model is LM321.
Power supply VCC is 9V direct current.
Operation principle of the present utility model is: the resistance R 1 in circuit and the existence of resistance R 2 can prevent self-excitation, and alsoBe input resistance, capacitor C 1 can prevent from sneaking into the High-frequency Interference of signal, while running into High-frequency Interference by its short circuit. Capacitor C 2Signal coupling electric capacity.
Chip IC 1 is above to have formed a voltage negative feedback circuit, and R3 and R4 are feedback resistances, and feedback voltage is to coreThe end of oppisite phase of sheet IC1. C3 plays frequency compensated effect: in the time that frequency is very high, the capacitive reactance of C3 reduces, and C3, R3's is totalImpedance reduces, and feedback quantity reduces, so the high frequency characteristics of this circuit is relatively good. C4 be reduce DC feedback and strengthen bass hand overStream feedback, adding of it can allow amplifier stable output. Chip IC 2 is reverse proportional amplifiers, prime process R5,C5 is coupled to its end of oppisite phase, and R8 is feedback resistance, and C5 is the same with C3, and R6 and R7 are divider resistances, the dividing potential drop obtainingBe added to the positive terminal of amplifier. Circuit structure is simple, components and parts are few, has increased the element of filtering High-frequency Interference in circuit, withTime circuit adopt the amplifier of two-stage with feedback, increase the stability of system, therefore have that cost is low, a stable performance and makingBy advantage easily.
Claims (2)
1. an anti-jamming signal amplification system, comprises resistance R 1, resistance R 2, resistance R 3, capacitor C 1, capacitor C 2, coreSheet IC1 and chip IC 1, is characterized in that, one end of described resistance R 1 connects capacitor C 1, capacitor C 2 and signal input partIN, the other end of resistance R 1 connects the drawing of the other end, capacitor C 4, resistance R 2, resistance R 7 and chip IC 1 of capacitor C 1Pin 2, the other end of other end contact resistance R2 of capacitor C 2 and the pin 1 of chip IC 1, the pin 5 of chip IC 1 connectsConnecting resistance R6 and power supply VCC, pin 3 contact resistance R3, resistance R 4 and the capacitor C 3 of chip IC 1, resistance R 3 anotherOne end connects the pin 4 of the other end, resistance R 5 and the chip IC 1 of capacitor C 3, and the other end of resistance R 4 connects capacitor C 4The other end, the other end of resistance R 5 connects capacitor C 5, other end contact resistance R8, capacitor C 6 and the chip of capacitor C 5The pin 3 of IC2, the other end of other end contact resistance R7 of resistance R 6 and the pin 1 of chip IC 2, resistance R 8 anotherOne end connects the other end of capacitor C 6, pin 4 and the output OUT of chip IC 2, described chip IC 1 and chip IC 2Model is LM321.
2. according to a kind of anti-jamming signal amplification system claimed in claim 1, it is characterized in that, described power supply VCC is 9VDirect current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521106594.0U CN205265633U (en) | 2015-12-28 | 2015-12-28 | Anti interfering signal magnification system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521106594.0U CN205265633U (en) | 2015-12-28 | 2015-12-28 | Anti interfering signal magnification system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205265633U true CN205265633U (en) | 2016-05-25 |
Family
ID=56007135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521106594.0U Expired - Fee Related CN205265633U (en) | 2015-12-28 | 2015-12-28 | Anti interfering signal magnification system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205265633U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106205026A (en) * | 2016-09-27 | 2016-12-07 | 北海益生源农贸有限责任公司 | A kind of household safe guard system based on Internet of Things |
| CN106846754A (en) * | 2017-02-27 | 2017-06-13 | 南京铁道职业技术学院 | A kind of wireless automatic safety-protection system based on Internet of Things |
| CN107360492A (en) * | 2017-07-03 | 2017-11-17 | 宁波泊人艾电子有限公司 | A kind of audio amplifier sound equalization controls amplification control circuit |
-
2015
- 2015-12-28 CN CN201521106594.0U patent/CN205265633U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106205026A (en) * | 2016-09-27 | 2016-12-07 | 北海益生源农贸有限责任公司 | A kind of household safe guard system based on Internet of Things |
| CN106846754A (en) * | 2017-02-27 | 2017-06-13 | 南京铁道职业技术学院 | A kind of wireless automatic safety-protection system based on Internet of Things |
| CN107360492A (en) * | 2017-07-03 | 2017-11-17 | 宁波泊人艾电子有限公司 | A kind of audio amplifier sound equalization controls amplification control circuit |
| CN107360492B (en) * | 2017-07-03 | 2019-06-21 | 宁波泊人艾电子有限公司 | A kind of speaker sound equalization control amplification control circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205265633U (en) | Anti interfering signal magnification system | |
| CN204761691U (en) | Intercom audio circuit | |
| CN205566235U (en) | Sound sound signal amplification control circuit | |
| CN202634379U (en) | Direct-current coupling low-pass RC (remote control) active filter | |
| CN203912161U (en) | Noise eliminating circuit | |
| CN203734825U (en) | Audio signal processing circuit and audio playing device | |
| CN202721728U (en) | Mobile phone and audio amplification output circuit thereof | |
| CN104300926A (en) | Audio power amplifier used for multimedia electronic equipment | |
| CN203491980U (en) | High-fidelity audio power amplification integrated circuit | |
| CN204697017U (en) | A kind of intercom audio amplifier circuit | |
| CN204206116U (en) | A kind of audio-frequency power amplifier for multimedia electronic equipment | |
| CN203027453U (en) | Filtering and denoising audio circuit | |
| CN203057083U (en) | High-accuracy negative feedback active audio machine | |
| CN203942638U (en) | A kind of audio input circuit | |
| CN204697021U (en) | A kind of multimedia active loundspeakers control circuit | |
| CN204559163U (en) | A kind of handset charging holder frame | |
| CN203057481U (en) | Anti-interference vocal apparatus | |
| CN202009242U (en) | Hand-held device charger adopting stereo system to supply power | |
| CN203027455U (en) | Dynamic filtering sounding device | |
| CN203181056U (en) | Novel anti-interference modem | |
| CN207854149U (en) | A kind of portable charged speaker circuit | |
| CN203027448U (en) | Audio device with noise reduction function | |
| CN203057466U (en) | Low noise active audio frequency machine | |
| CN203027450U (en) | Low-noise active audio machine | |
| CN203027452U (en) | Filtering type active sounding device |
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: 20160525 Termination date: 20161228 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |