CN204013410U - A kind of computer broadband signal amplifier - Google Patents
A kind of computer broadband signal amplifier Download PDFInfo
- Publication number
- CN204013410U CN204013410U CN201420376027.6U CN201420376027U CN204013410U CN 204013410 U CN204013410 U CN 204013410U CN 201420376027 U CN201420376027 U CN 201420376027U CN 204013410 U CN204013410 U CN 204013410U
- Authority
- CN
- China
- Prior art keywords
- resistance
- triode
- electric capacity
- signal
- amplifier
- 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
Abstract
The utility model discloses a kind of computer broadband signal amplifier, comprise the first resistance to the eight resistance, the first electric capacity to the five electric capacity, the first triode and the second triode, this amplifier has higher voltage amplification factor, working point is very stable again, that the common emitter amplifier with high voltage multiplication factor forms, so multiplication factor must be high; Secondly, owing to having saved base electrode bias resistance, the signal code of the collector electrode of the first triode output all flows into the base stage of the second triode, and signal code is loss not, so can obtain higher current amplification factor.Compared with prior art, the utility model can amplify broadband signal, uses wide band signal-strength to improve, and then improves the speed of signal transmission, multimedia equipment can be moved smooth and easy, easy to use, has the value of applying.
Description
Technical field
The utility model relates to a kind of computer-related devices, more relates to a kind of computer broadband signal amplifier.
Background technology
Broadband is not very strict definition in fact, be generally the dial up on the telephone upper limit 56Kbps of speed be boundary, 56Kbps and following access thereof are called to " arrowband ", on access way range " broadband ".The also generally acknowledged definition of neither one of broadband, understands from general angle, and it is can meet various media that people's sense organ can experience in the needed bandwidth of transmission over networks, so it is also dynamic, a to develop concept.Broadband refers to that for domestic consumer transmission rate surpasses 1M, can meet the demand that the bulk informations such as voice, image transmit.Yet broadband signal of the prior art does not reach requirement mostly, make when using multimedia equipment, transmission speed is slower, therefore, has room for improvement.
Summary of the invention
The purpose of this utility model provides a kind of computer broadband signal amplifier 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 the first resistance to the eight resistance, the first electric capacity to the five electric capacity, the first triode and the second triode, the first end of described the first electric capacity is the signal input part of described computer broadband signal amplifier, the second end while of described the first electric capacity and the base stage of described the first triode, the first end of described the first resistance is connected with the first end of described the second resistance, the second end while of described the first resistance and the first end of described the 3rd resistance, the first end of described the 4th resistance, the first end of described the 6th resistance is connected with positive source, the second end while of described the second resistance and the first end of described the 7th resistance, the first end of described the 4th electric capacity, the first end of described the 5th resistance, the first end of described the 8th resistance, described the 5th first end of electric capacity and the negative pole of power supply are connected, the emitter of described the first triode is connected with the second end of described the 4th electric capacity with the second end of described the 7th resistance simultaneously, the collector electrode of described the first triode is connected with the first end of described the second electric capacity in the second end of described the 3rd resistance simultaneously, the second end while of described the second electric capacity and the second end of described the 4th resistance, the second end of described the 5th resistance is connected with the base stage of described the second triode, the emitter of described the second triode is connected with the second end of described the 5th electric capacity with the second end of described the 8th resistance simultaneously, the collector electrode of described the second triode is connected with the second end of described the 6th resistance in the first end of described the 3rd electric capacity simultaneously, the second end of described the 3rd electric capacity is the signal output part of described computer broadband signal amplifier.
The beneficial effects of the utility model are:
The utility model is a kind of computer broadband signal amplifier, compared with prior art, the utility model can amplify broadband signal, use wide band signal-strength improves, and then the speed of raising signal transmission, multimedia equipment can be moved smooth and easy, easy to use, there is the value of applying.
Accompanying drawing explanation
Fig. 1 is circuit structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1: the utility model comprises that the first resistance R 1 is to the 8th resistance R 8, the first capacitor C 1 is to the 5th capacitor C 5, the first triode BG1 and the second triode BG2, the first end of the first capacitor C 1 is the signal input part IN of computer broadband signal amplifier, the second end while of the first capacitor C 1 and the base stage of the first triode BG1, the first end of the first resistance R 1 is connected with the first end of the second resistance R 2, the second end while of the first resistance R 1 and the first end of the 3rd resistance R 3, the first end of the 4th resistance R 4, the first end of the 6th resistance R 6 is connected with positive source, the second end while of the second resistance R 2 and the first end of the 7th resistance R 7, the first end of the 4th capacitor C 4, the first end of the 5th resistance R 5, the first end of the 8th resistance R 8, the 5th first end of capacitor C 5 and the negative pole of power supply are connected, the emitter of the first triode BG1 is connected with the second end of the 4th capacitor C 4 with the second end of the 7th resistance R 7 simultaneously, the collector electrode of the first triode BG1 is connected with the first end of the second capacitor C 2 in the second end of the 3rd resistance R 3 simultaneously, the second end while of the second capacitor C 2 and the second end of the 4th resistance R 4, the second end of the 5th resistance R 5 is connected with the base stage of the second triode BG2, the emitter of the second triode BG2 is connected with the second end of the 5th capacitor C 5 with the second end of the 8th resistance R 8 simultaneously, the collector electrode of the second triode BG2 is connected with the second end of the 6th resistance R 6 in the first end of the 3rd capacitor C 3 simultaneously, the second end of the 3rd capacitor C 3 is the signal output part OUT of computer broadband signal amplifier.
As shown in Figure 1: the second capacitor C 2, the 4th resistance R 4 are together with publishing in instalments with the 5th resistance R 5, and this connection is called resaistance-capacity coupling circuit, and the second electric capacity can be sent to the rear utmost point the alternating current output signal of pre-amplifier, and the direct voltage of the front and back utmost point is cut off; The 4th resistance R 4, the 5th resistance R 5 are base electrode bias resistances of the second triode BG2, and for stable base stage bias current being provided to the second triode BG2, these two resistance are absolutely necessary.The first triode BG1 and the second triode BG2 are linked together, and this amplifier has higher voltage amplification factor, and working point is very stable again, is that the common emitter amplifier with high voltage multiplication factor forms, so multiplication factor must be high; Secondly, owing to having saved base electrode bias resistance, the signal code of the collector electrode of the first triode BG1 output all flows into the base stage of the second triode BG2, and signal code is loss not, so can obtain higher current amplification factor.The utility model working stability is because be added with the cause of two-stage direct current negative-feedback circuit, the base stage bias current of the first triode BG1 is not to take from power supply, but by the first resistance R 1, take from the emitter of the second triode BG2, this has just formed two-stage direct current negative-feedback circuit, its feedback procedure is, if make for a certain reason the collector current of the first triode BG1 increase, can cause chain reaction, collector current is received and pind down and substantially remain unchanged, thereby guaranteed the working point quite stable of direct-coupled amplifier, this is an outstanding advantages of direct coupled amplifier.
Component parameter of the present utility model is chosen as:
The first resistance R 1 and the second resistance R 2 all adopt the resistance of 10 kilo-ohms, the 3rd resistance R 3 and the 7th resistance R 7 all adopt the resistance in 400 Europe, the 4th resistance R 4 adopts the resistance in 120 Europe, the 5th resistance R 5 and the 8th resistance R 8 all adopt the resistance of 20 kilo-ohms, the 6th resistance R 6 adopts the resistance in 800 Europe, the first capacitor C 1 adopts the electric capacity of 100uf, the second capacitor C 2 and the 3rd capacitor C 3 all adopt the electric capacity of 40uf, the 4th capacitor C 4 adopts the electric capacity of 500uf, the 5th capacitor C 5 adopts the electric capacity of 470uf, and the first triode BG1 and the second triode BG2 all adopt NPN type triode.
Claims (1)
1. a computer broadband signal amplifier, it is characterized in that: comprise the first resistance to the eight resistance, the first electric capacity to the five electric capacity, the first triode and the second triode, the first end of described the first electric capacity is the signal input part of described computer broadband signal amplifier, the second end while of described the first electric capacity and the base stage of described the first triode, the first end of described the first resistance is connected with the first end of described the second resistance, the second end while of described the first resistance and the first end of described the 3rd resistance, the first end of described the 4th resistance, the first end of described the 6th resistance is connected with positive source, the second end while of described the second resistance and the first end of described the 7th resistance, the first end of described the 4th electric capacity, the first end of described the 5th resistance, the first end of described the 8th resistance, described the 5th first end of electric capacity and the negative pole of power supply are connected, the emitter of described the first triode is connected with the second end of described the 4th electric capacity with the second end of described the 7th resistance simultaneously, the collector electrode of described the first triode is connected with the first end of described the second electric capacity in the second end of described the 3rd resistance simultaneously, the second end while of described the second electric capacity and the second end of described the 4th resistance, the second end of described the 5th resistance is connected with the base stage of described the second triode, the emitter of described the second triode is connected with the second end of described the 5th electric capacity with the second end of described the 8th resistance simultaneously, the collector electrode of described the second triode is connected with the second end of described the 6th resistance in the first end of described the 3rd electric capacity simultaneously, the second end of described the 3rd electric capacity is the signal output part of described computer broadband signal amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420376027.6U CN204013410U (en) | 2014-07-09 | 2014-07-09 | A kind of computer broadband signal amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420376027.6U CN204013410U (en) | 2014-07-09 | 2014-07-09 | A kind of computer broadband signal amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204013410U true CN204013410U (en) | 2014-12-10 |
Family
ID=52053345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420376027.6U Expired - Fee Related CN204013410U (en) | 2014-07-09 | 2014-07-09 | A kind of computer broadband signal amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204013410U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106656073A (en) * | 2016-10-28 | 2017-05-10 | 中州大学 | Sensor electronic signal amplifier |
-
2014
- 2014-07-09 CN CN201420376027.6U patent/CN204013410U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106656073A (en) * | 2016-10-28 | 2017-05-10 | 中州大学 | Sensor electronic signal amplifier |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204013410U (en) | A kind of computer broadband signal amplifier | |
| CN204578487U (en) | A kind of audio-frequency power amplifier | |
| CN104320091A (en) | Power amplifying circuit for computer speaker | |
| CN103546106A (en) | Signal amplification circuit | |
| CN203563019U (en) | Power amplification circuit for loudspeaker box loudspeaker | |
| CN203984359U (en) | A kind of onboard audio power amplification circuit | |
| CN203522658U (en) | Novel, simple power amplifier circuit | |
| CN104300926A (en) | Audio power amplifier used for multimedia electronic equipment | |
| CN104639057A (en) | Audio amplification circuit provided with simple structure and used for computer | |
| CN203057473U (en) | Active audio frequency amplifying circuit | |
| CN204334504U (en) | Easy Resistance and Capacitance Coupled Amplification Circuit | |
| CN203057083U (en) | High-accuracy negative feedback active audio machine | |
| CN203313128U (en) | Novel infrared amplifying circuit | |
| CN204206116U (en) | A kind of audio-frequency power amplifier for multimedia electronic equipment | |
| CN204290891U (en) | A kind of wideband power amplifer circuit | |
| CN103475317A (en) | Negative feedback amplifying circuit | |
| CN203057088U (en) | Sound-cracking-resistant type active audio machine | |
| CN203289441U (en) | Infrared receiving circuit | |
| CN203027463U (en) | Audio machine with voice crack preventing function | |
| CN204180024U (en) | A kind of multimedia high tone quality power amplifier | |
| CN203027451U (en) | Active audio amplifying circuit | |
| CN203057472U (en) | Dual-noise reduction sounding device | |
| CN203027452U (en) | Filtering type active sounding device | |
| CN203057466U (en) | Low noise active audio frequency machine | |
| CN203057474U (en) | Sounding device with dual-filtering function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Wang Huimin Document name: Notification of Termination of Patent Right |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141210 Termination date: 20170709 |