CN104485905A - High-stability amplifier - Google Patents
High-stability amplifier Download PDFInfo
- Publication number
- CN104485905A CN104485905A CN201410574628.2A CN201410574628A CN104485905A CN 104485905 A CN104485905 A CN 104485905A CN 201410574628 A CN201410574628 A CN 201410574628A CN 104485905 A CN104485905 A CN 104485905A
- Authority
- CN
- China
- Prior art keywords
- amplifier
- electric capacity
- triode
- resistance
- inductance
- 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.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F3/213—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only in integrated circuits
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/20—Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F2203/21—Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F2203/211—Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
- H03F2203/21103—An impedance adaptation circuit being added at the input of a power amplifier stage
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2203/00—Indexing scheme relating to amplifiers with only discharge tubes or only semiconductor devices as amplifying elements covered by H03F3/00
- H03F2203/20—Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F2203/21—Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
- H03F2203/211—Indexing scheme relating to power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several amplifiers
- H03F2203/21139—An impedance adaptation circuit being added at the output of a power amplifier stage
Abstract
The invention discloses a high-stability amplifier. The high-stability amplifier comprises a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a first inductor, a second inductor, a first amplifier, a first triode and a second triode. According to the high-stability amplifier, signals of circuits are stable and not easy to disturb due to adjustment of an input stage matching circuit and an output stage matching circuit, meanwhile the first amplifier, the first triode and the second triode are good in stability performance, and accordingly leading in of new clutter caused by signal shaking is avoided.
Description
Technical field
The invention discloses a kind of amplifier of high stability, belong to amplifier design techniques field.
Background technology
Power amplifier, English name: power amplifier, is called for short " power amplifier ", refers under given distortion rate condition, can produce maximum power output to drive the amplifier of a certain load.Power amplifier serves in whole sound system " tissue, coordination " pivotal role, can dominate whole system to a certain extent provide good tonequality to export.
The scope of application of amplifier widely, in all trades and professions, every needs carries out signal amplification, power amplification, the equipment that gain is amplified or device, all be unable to do without amplifier, although existing amplifier chip is very many, but the performance of amplifier chip itself is not also very perfect, so need the coupling of peripheral circuit and equilibrium, but because the characteristic of signal, some change in circuit just may cause varying of result, so also need to mate the peripheral circuit of amplifier accurately.
The patent No. is CN103269205A, patent name is a kind of power amplifier, this patent indicates that existing stack power amplifier is by the stacking Problems existing that is formed by connecting of several power unit cascade, and propose the mode of improvement, but this patent does not clearly provide the side circuit of coupling input impedance or actual means, still can not effectively deal with problems.
The patent No. is CN1926760A, patent name is a kind of power amplifier, efficiency when this patent indicates that existing high output amplifier is devoted to by carrying out reducing the design of idle current and improving low output, although this patent effectively raises power output, but well do not solve the problem of circuit stability, raising delivery efficiency simply only can cause the stability of circuit poorer.
In sum, need a kind of good stability, the sufficiently high amplifier circuit of output power of circuit.
Summary of the invention
Technical problem to be solved by this invention is: for the defect of prior art, a kind of amplifier of high stability is provided, by the adjustment to input stage match circuit and output stage match circuit, make the signal of circuit highly stable, not easily be disturbed, the first amplifier simultaneously selected, the first triode and the second triode have a lot of stabilities, can not bring the shake of signal, and introduce new clutter.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
An amplifier for high stability, comprises the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the first inductance, the second inductance, the first amplifier, the first triode, the second triode;
Wherein, one end of first resistance is connected with one end of the first electric capacity, the other end of described first electric capacity connects one end of the 3rd electric capacity respectively, one end of 4th resistance and the normal phase input end of the first amplifier, the inverting input of described first amplifier is connected with one end of the second resistance, the other end ground connection of described second resistance, the output of described first amplifier connects one end of the 4th electric capacity respectively, one end of 5th resistance, the other end ground connection of described 5th resistance, the other end of the 4th electric capacity connects the other end of the 3rd electric capacity respectively, the other end of the 4th circuit, the collector electrode of the first triode, the collector electrode of the second triode,
The positive power source terminal of described first amplifier is connected with one end of the first inductance, the other end of described first inductance connects one end of the second electric capacity, one end of the 3rd resistance and the base stage of the first triode, the other end of described second electric capacity, the other end of the 3rd resistance, the emitter of the first triode are all connected with positive voltage;
The negative power end of described first amplifier connects one end of the second inductance, the base stage of the second triode respectively, the emitter of described second triode connects the other end of the second inductance, one end of the 5th electric capacity and negative voltage, the other end ground connection of described 5th electric capacity respectively.
As further prioritization scheme of the present invention, the chip model that described first amplifier adopts is UA759.
As further prioritization scheme of the present invention, the model of described first triode is 2N3790.
As further prioritization scheme of the present invention, the model of described second triode is 2N3055.
As further prioritization scheme of the present invention, described positive voltage is+15V, and negative voltage is-13V.
The present invention adopts above technical scheme compared with prior art, there is following technique effect: the present invention is by the adjustment to input stage match circuit and output stage match circuit, make the signal of circuit highly stable, not easily be disturbed, the first amplifier simultaneously selected, the first triode and the second triode have a lot of stabilities, the shake of signal can not be brought, and introduce new clutter.
Accompanying drawing explanation
Fig. 1 is modular structure schematic diagram of the present invention.
Embodiment
Be described below in detail embodiments of the present invention, the example of described execution mode is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.
Being exemplary below by the execution mode be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
System configuration schematic diagram of the present invention as shown in Figure 1, comprises the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the first inductance, the second inductance, the first amplifier, the first triode, the second triode;
Wherein, one end of first resistance is connected with one end of the first electric capacity, the other end of described first electric capacity connects one end of the 3rd electric capacity, one end of the 4th resistance and the normal phase input end of the first amplifier respectively, and the inverting input of described first amplifier is connected with one end of the second resistance;
The other end ground connection of described second resistance, the output of described first amplifier connects one end of the 4th electric capacity, one end of the 5th resistance respectively, and the other end ground connection of described 5th resistance, the other end of the 4th electric capacity connect the other end, the other end of the 4th circuit, the collector electrode of the first triode, the collector electrode of the second triode of the 3rd electric capacity respectively;
The positive power source terminal of described first amplifier is connected with one end of the first inductance, the other end of described first inductance connects one end of the second electric capacity, one end of the 3rd resistance and the base stage of the first triode, the other end of described second electric capacity, the other end of the 3rd resistance, the emitter of the first triode are all connected with positive voltage;
The negative power end of described first amplifier connects one end of the second inductance, the base stage of the second triode respectively, the emitter of described second triode connects the other end of the second inductance, one end of the 5th electric capacity and negative voltage, the other end ground connection of described 5th electric capacity respectively.
As further prioritization scheme of the present invention, the chip model that described first amplifier adopts is UA759, and this chip stability is good, power is large, and load capacity is strong, is not easy to damage, the match circuit of chip internal is very perfect simultaneously, effectively can avoid the interference of clutter.
As further prioritization scheme of the present invention, the model of described first triode is 2N3790.
As further prioritization scheme of the present invention, the model of described second triode is 2N3055.
First diode and the second triode all have good stability, easily by the impact of extraneous factor, effectively can not can improve the stationary performance of circuit, and can not introduce other clutter, the amplification of interference signal during use.
As further prioritization scheme of the present invention, described positive voltage is+15V, and negative voltage is-13V.
The positive supply input of the first amplifier, except divider resistance, also adds the second electric capacity in parallel and the first inductance of series connection, plays the effect of filtering clutter, prevent the ripple of power supply from introducing in the first amplifier, disturb the performance of the first amplifier.
A shunt capacitance can also be added at the resistance two ends of the inverting input of the first amplifier simultaneously, some interfering clutters of filtering, thus reduce the introducing of clutter, improve the stability of amplifier, all can add the inductance of multiple earth in addition at the input of positive supply and the input of negative supply, carry out the clutter in filter out power.
The mode of this circuit synthesis plurality of stable circuit improves the stability of amplifying circuit, can not increase complexity and the antijamming capability of circuit simultaneously, better provide the circuit of high-quality stable.
By reference to the accompanying drawings embodiments of the present invention are explained in detail above, but the present invention is not limited to above-mentioned execution mode, in the ken that those of ordinary skill in the art possess, can also makes a variety of changes under the prerequisite not departing from present inventive concept.The above is only preferred embodiment of the present invention, not does any pro forma restriction to the present invention, although the present invention discloses as above with preferred embodiment, but and is not used to limit the present invention, any those skilled in the art.
Do not departing within the scope of technical solution of the present invention; make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations; in every case be do not depart from technical solution of the present invention content; according to technical spirit of the present invention; within the spirit and principles in the present invention; the any simple amendment that above embodiment is done, equivalently replace and improve, within the protection range all still belonging to technical solution of the present invention.
Claims (5)
1. an amplifier for high stability, is characterized in that: comprise the first resistance, the second resistance, the 3rd resistance, the 4th resistance, the 5th resistance, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the first inductance, the second inductance, the first amplifier, the first triode, the second triode;
Wherein, one end of first resistance is connected with one end of the first electric capacity, the other end of described first electric capacity connects one end of the 3rd electric capacity respectively, one end of 4th resistance and the normal phase input end of the first amplifier, the inverting input of described first amplifier is connected with one end of the second resistance, the other end ground connection of described second resistance, the output of described first amplifier connects one end of the 4th electric capacity respectively, one end of 5th resistance, the other end ground connection of described 5th resistance, the other end of the 4th electric capacity connects the other end of the 3rd electric capacity respectively, the other end of the 4th circuit, the collector electrode of the first triode, the collector electrode of the second triode,
The positive power source terminal of described first amplifier is connected with one end of the first inductance, the other end of described first inductance connects one end of the second electric capacity, one end of the 3rd resistance and the base stage of the first triode, the other end of described second electric capacity, the other end of the 3rd resistance, the emitter of the first triode are all connected with positive voltage;
The negative power end of described first amplifier connects one end of the second inductance, the base stage of the second triode respectively, the emitter of described second triode connects the other end of the second inductance, one end of the 5th electric capacity and negative voltage, the other end ground connection of described 5th electric capacity respectively.
2. the amplifier of a kind of high stability as claimed in claim 1, is characterized in that: the chip model that described first amplifier adopts is UA759.
3. the amplifier of a kind of high stability as claimed in claim 1 or 2, is characterized in that: the model of described first triode is 2N3790.
4. the amplifier of a kind of high stability as claimed in claim 1, is characterized in that: the model of described second triode is 2N3055.
5. the amplifier of a kind of high stability as claimed in claim 4, it is characterized in that: described positive voltage is+15V, negative voltage is-13V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410574628.2A CN104485905A (en) | 2014-10-24 | 2014-10-24 | High-stability amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410574628.2A CN104485905A (en) | 2014-10-24 | 2014-10-24 | High-stability amplifier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104485905A true CN104485905A (en) | 2015-04-01 |
Family
ID=52760422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410574628.2A Pending CN104485905A (en) | 2014-10-24 | 2014-10-24 | High-stability amplifier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104485905A (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 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4366442A (en) * | 1979-09-19 | 1982-12-28 | Tokyo Shibaura Denki Kabushiki Kaisha | Amplifier with muting circuit |
| CN1926760A (en) * | 2004-07-14 | 2007-03-07 | 三菱电机株式会社 | High output amplifier |
| JP2012138860A (en) * | 2010-12-27 | 2012-07-19 | Jvc Kenwood Corp | Amplification circuit |
| CN103269205A (en) * | 2013-06-04 | 2013-08-28 | 苏州英诺迅科技有限公司 | Power amplifier |
-
2014
- 2014-10-24 CN CN201410574628.2A patent/CN104485905A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4366442A (en) * | 1979-09-19 | 1982-12-28 | Tokyo Shibaura Denki Kabushiki Kaisha | Amplifier with muting circuit |
| CN1926760A (en) * | 2004-07-14 | 2007-03-07 | 三菱电机株式会社 | High output amplifier |
| JP2012138860A (en) * | 2010-12-27 | 2012-07-19 | Jvc Kenwood Corp | Amplification circuit |
| CN103269205A (en) * | 2013-06-04 | 2013-08-28 | 苏州英诺迅科技有限公司 | Power amplifier |
Non-Patent Citations (4)
| Title |
|---|
| FAIRCHILD: "uA750·uA77000 Power Operational Amplifiers", 《HTTP://WENKU.BAIDU.COM/VIEW/AA26713B3968011CA3009125.HTML?FROM=SEARCH》 * |
| 从余: "全场效应管全对称型漏极输出 甲类50W/甲乙类120W直流功放", 《实用电子文摘》 * |
| 张正苏等: "基于SEPP的音频功率放大器的研究", 《黑龙江工程学院学报（自然科学版）》 * |
| 曹曙光: "新型功率放大器", 《电测与仪表》 * |
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 |
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Application publication date: 20150401 |
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| RJ01 | Rejection of invention patent application after publication |