CN202663531U - Power amplifier device with alt and bass adjustment - Google Patents
Power amplifier device with alt and bass adjustment Download PDFInfo
- Publication number
- CN202663531U CN202663531U CN 201220190689 CN201220190689U CN202663531U CN 202663531 U CN202663531 U CN 202663531U CN 201220190689 CN201220190689 CN 201220190689 CN 201220190689 U CN201220190689 U CN 201220190689U CN 202663531 U CN202663531 U CN 202663531U
- Authority
- CN
- China
- Prior art keywords
- resistance
- potentiometer
- electric capacity
- amplifier
- power supply
- 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
Images
Abstract
The utility model discloses a power amplifier device with alt and bass adjustment, which comprises a dc power supply, an amplifier, a first potentiometer, a second potentiometer, a third potentiometer, a first to a seventh capacitors, and a first to a tenth resistors. Circuit structure of the power amplifier device is composed of three main parts including an attenuated tone control circuit with respective control over alt and bass, an amplification circuit and a dc power supply circuit. According to the utility model, the prior power amplifier circuit is simplified, wherein a tuning device is integrated with an amplifier device, and part of unnecessary components are deleted; thus, the power amplifier device with alt and bass adjustment has advantages of simple structure, low cost, small size, convenient usage, and easy for popularization.
Description
Technical field
The utility model relates to a kind of audio power amplifier device, relates in particular to a kind of power amplification device with high low pitch joint.
Background technology
Existing audio power amplifier device forms but existing this device all is divided into two parts mostly all with the device of regulating the tone color tone, amplifier installation and tuning device, and obviously, just with complicated, cost is higher, and volume is also larger for circuit structure.
Summary of the invention
The purpose of this utility model provides a kind of power amplification device with high low pitch joint with regard to being in order to address the above problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
The utility model comprises DC power supply, amplifier, the first potentiometer, the second potentiometer, the 3rd potentiometer, the first electric capacity to the seven electric capacity, the first resistance to the ten resistance, the first end of described the first resistance is audio signal input end, the second end of described the first resistance is connected with the first end of described the first potentiometer, the second end while of described the first potentiometer and the negative pole of described DC power supply, the first end of described the 3rd resistance, the first end of described the 4th electric capacity, the first end of described the 7th resistance, the negative power supply input of described amplifier, the first end of described the 9th resistance, the first end of described the tenth resistance be connected the first end of loud speaker and connect, the sliding end of described the first potentiometer simultaneously with the first end of described the second resistance be connected the first end of the 3rd electric capacity and be connected, the second end of described the second resistance simultaneously with the first end of described the second potentiometer be connected the first end of the second electric capacity and be connected, the second end of described the second potentiometer simultaneously with the second end of described the 3rd resistance be connected the first end of the first electric capacity and be connected, the sliding end while of described the second potentiometer and the second end of described the second electric capacity, the second end of described the first electric capacity be connected the first end of the 4th resistance and connect, the second end of described the 4th resistance simultaneously with the first end of described the 5th resistance be connected the sliding end of the 3rd potentiometer and be connected, the first end of described the 3rd potentiometer is connected with the second end of described the 3rd electric capacity, the second end of described the 3rd potentiometer is connected with the second end of described the 4th electric capacity, the second end of described the 5th resistance is connected with the first end of described the 5th electric capacity, the second end of described the 5th electric capacity is connected with the first end of described the 6th resistance, the second end of described the 6th resistance simultaneously with the positive signal input of described amplifier be connected the second end of the 7th resistance and be connected, the negative signal input of described amplifier simultaneously with the first end of described the 8th resistance be connected the first end of the 6th electric capacity and be connected, the second end of described the 6th electric capacity is connected with the second end of described the 9th resistance, the second end while of described the 8th resistance and the signal output part of described amplifier, the first end of described the 7th electric capacity be connected the second end of loud speaker and connect, the second end of described the 7th electric capacity is connected with the second end of described the tenth resistance, and the cathode power supply input of described amplifier is connected with described dc power anode.
The beneficial effects of the utility model are:
The utility model is oversimplified existing power amplifier, tuning device and amplifier installation is incorporated into together, and deletes the original paper that a part is unnecessary, and therefore, the utility model is simple in structure, and cost is low, and volume is little, and is easy to use, is convenient to promote.
Description of drawings
Fig. 1 is circuit structure schematic diagram of the present utility model.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
As shown in Figure 1: comprise DC power supply, amplifier LM1875, the first potentiometer W1, the second potentiometer W2, the 3rd potentiometer W3, the first capacitor C 1 to the 7th capacitor C 7, the first resistance R 1 to the tenth resistance R 10, the first end of the first resistance R 1 is audio signal input end INPUT, the second end of the first resistance R 1 is connected with the first end of the first potentiometer W1, the second end while of the first potentiometer W1 and the negative pole-VCC of DC power supply, the first end of the 3rd resistance R 3, the first end of the 4th capacitor C 4, the first end of the 7th resistance R 7, the negative power supply input of amplifier LM1875, the first end of the 9th resistance R 9, the first end of the tenth resistance R 10 is connected first end and is connected with loud speaker SP, the sliding end of the first potentiometer W1 is connected with the first end of the second resistance R 2 and the first end of the 3rd capacitor C 3 simultaneously, the second end of the second resistance R 2 simultaneously with the first end of the second potentiometer W2 be connected the first end of capacitor C 2 and be connected, the second end of the second potentiometer W2 simultaneously with the second end of the 3rd resistance R 3 be connected the first end of capacitor C 1 and be connected, the sliding end while of the second potentiometer W2 and the second end of the second capacitor C 2, the first end of the second end of the first capacitor C 1 and the 4th resistance R 4 connects, the second end of the 4th resistance R 4 is connected with the first end of the 5th resistance R 5 and the sliding end of the 3rd potentiometer W3 simultaneously, the first end of the 3rd potentiometer W3 is connected with the second end of the 3rd capacitor C 3, the second end of the 3rd potentiometer W3 is connected with the second end of the 4th capacitor C 4, the second end of the 5th resistance R 5 is connected with the first end of the 5th capacitor C 5, the second end of the 5th capacitor C 5 is connected with the first end of the 6th resistance R 6, the second end of the 6th resistance R 6 is connected with the positive signal input of amplifier LM1875 and the second end of the 7th resistance R 7 simultaneously, the negative signal input of amplifier LM1875 is connected with the first end of the 8th resistance R 8 and the first end of the 6th capacitor C 6 simultaneously, the second end of the 6th capacitor C 6 is connected with the second end of the 9th resistance R 9, the second end while of the 8th resistance R 8 and the signal output part of amplifier LM1875, the first end of the 7th capacitor C 7 is connected the second end and is connected with loud speaker SP, the second end of the 7th capacitor C 7 is connected with the second end of the tenth resistance R 10, and the cathode power supply input of amplifier LM1875 is connected with dc power anode+VCC.
As shown in Figure 1: the utility model circuit structure is comprised of the height attenuation type tone control circuit do not controlled of cent and amplifying circuit and DC power supply circuit three parts.What tone partly adopted is the attenuation type tone circuit that the height cent is not controlled, and the second resistance R 2 wherein, the 3rd resistance R 3, the second capacitor C 2, the first capacitor C 1 and the second potentiometer W2 form the bass control circuit; The 3rd capacitor C 3, the 4th capacitor C 4 and the 3rd potentiometer W3 form the high pitch control circuit; The 4th resistance R 4 is isolation resistance, and the first potentiometer W1 is volume controller, the volume of resonance-amplifier LM1875, and the 5th capacitor C 5 is capacitance, prevents that the amplifier LM1875 DC potential of rear class is on the impact of prime tone circuit.Amplifying circuit mainly adopts amplifier LM1875 and the 8th resistance R 8, the 9th resistance R 9 and the 6th capacitor C 6 to form, the multiplication factor of circuit is determined by the ratio of the 8th resistance R 8 and the 9th resistance R 9, the 6th capacitor C 6 is used for the drift of the signal output part direct current zero potential of stabilizing amplifier LM1875, but tonequality is had certain impact, and the effect of the 7th capacitor C 7 and the tenth resistance R 10 is to prevent that amplifier from producing the low frequency self-excitation.The load impedance of amplifier LM1875 of the present utility model is 4 → 16 Ω.
Claims (1)
1. power amplification device with high low pitch joint, it is characterized in that: comprise DC power supply, amplifier, the first potentiometer, the second potentiometer, the 3rd potentiometer, the first electric capacity to the seven electric capacity, the first resistance to the ten resistance, the first end of described the first resistance is audio signal input end, the second end of described the first resistance is connected with the first end of described the first potentiometer, the second end while of described the first potentiometer and the negative pole of described DC power supply, the first end of described the 3rd resistance, the first end of described the 4th electric capacity, the first end of described the 7th resistance, the negative power supply input of described amplifier, the first end of described the 9th resistance, the first end of described the tenth resistance be connected the first end of loud speaker and connect, the sliding end of described the first potentiometer simultaneously with the first end of described the second resistance be connected the first end of the 3rd electric capacity and be connected, the second end of described the second resistance simultaneously with the first end of described the second potentiometer be connected the first end of the second electric capacity and be connected, the second end of described the second potentiometer simultaneously with the second end of described the 3rd resistance be connected the first end of the first electric capacity and be connected, the sliding end while of described the second potentiometer and the second end of described the second electric capacity, the second end of described the first electric capacity be connected the first end of the 4th resistance and connect, the second end of described the 4th resistance simultaneously with the first end of described the 5th resistance be connected the sliding end of the 3rd potentiometer and be connected, the first end of described the 3rd potentiometer is connected with the second end of described the 3rd electric capacity, the second end of described the 3rd potentiometer is connected with the second end of described the 4th electric capacity, the second end of described the 5th resistance is connected with the first end of described the 5th electric capacity, the second end of described the 5th electric capacity is connected with the first end of described the 6th resistance, the second end of described the 6th resistance simultaneously with the positive signal input of described amplifier be connected the second end of the 7th resistance and be connected, the negative signal input of described amplifier simultaneously with the first end of described the 8th resistance be connected the first end of the 6th electric capacity and be connected, the second end of described the 6th electric capacity is connected with the second end of described the 9th resistance, the second end while of described the 8th resistance and the signal output part of described amplifier, the first end of described the 7th electric capacity be connected the second end of loud speaker and connect, the second end of described the 7th electric capacity is connected with the second end of described the tenth resistance, and the cathode power supply input of described amplifier is connected with described dc power anode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220190689 CN202663531U (en) | 2012-05-02 | 2012-05-02 | Power amplifier device with alt and bass adjustment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220190689 CN202663531U (en) | 2012-05-02 | 2012-05-02 | Power amplifier device with alt and bass adjustment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202663531U true CN202663531U (en) | 2013-01-09 |
Family
ID=47458399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220190689 Expired - Fee Related CN202663531U (en) | 2012-05-02 | 2012-05-02 | Power amplifier device with alt and bass adjustment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202663531U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104300926A (en) * | 2014-11-05 | 2015-01-21 | 成都市幻多奇软件有限公司 | Audio power amplifier used for multimedia electronic equipment |
| CN104639272A (en) * | 2013-11-12 | 2015-05-20 | 博兴电子（恩平）有限公司 | Tuning console |
-
2012
- 2012-05-02 CN CN 201220190689 patent/CN202663531U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104639272A (en) * | 2013-11-12 | 2015-05-20 | 博兴电子（恩平）有限公司 | Tuning console |
| CN104639272B (en) * | 2013-11-12 | 2018-06-08 | 博兴电子（恩平）有限公司 | Sound console |
| CN104300926A (en) * | 2014-11-05 | 2015-01-21 | 成都市幻多奇软件有限公司 | Audio power amplifier used for multimedia electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202663531U (en) | Power amplifier device with alt and bass adjustment | |
| CN203933898U (en) | A kind of VGA CARD is eliminated circuit and active noise reduction earphone | |
| CN207354224U (en) | Power amplification circuit for speaker of voice box | |
| CN205265633U (en) | Anti interfering signal magnification system | |
| CN104682892A (en) | Audio frequency amplifier used for computer speakers | |
| CN204721585U (en) | Receiver amplifier | |
| CN203225871U (en) | Simplified audio frequency amplification circuit | |
| CN203563019U (en) | Power amplification circuit for loudspeaker box loudspeaker | |
| CN202634379U (en) | Direct-current coupling low-pass RC (remote control) active filter | |
| CN203120140U (en) | Audio amplification circuit with standby function | |
| CN204697021U (en) | A kind of multimedia active loundspeakers control circuit | |
| CN104300926A (en) | Audio power amplifier used for multimedia electronic equipment | |
| CN105487442A (en) | Reset switch mute function synchronous control circuit | |
| CN203491987U (en) | Adjustable audio frequency filter | |
| CN205039785U (en) | Portable instrument's power amplification circuit | |
| CN206923015U (en) | A kind of toy trumpet high pitch correcting module of Multifunctional audio integrated system | |
| CN204697020U (en) | A kind of dual output constant current-supplying circuit for preamplifier | |
| CN104639057A (en) | Audio amplification circuit provided with simple structure and used for computer | |
| CN203027461U (en) | Audio module and audio player | |
| CN204013410U (en) | A kind of computer broadband signal amplifier | |
| CN216356648U (en) | Power amplifying circuit | |
| CN203180847U (en) | Double audio power amplifying circuit for audio paying | |
| CN202652151U (en) | Novel full-balanced vacuum tube high fidelity power amplifier | |
| CN204697012U (en) | A kind of active loundspeakers amplification control circuit | |
| CN203563012U (en) | High-stability amplifier for mobile phone |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20130502 |