CN204334495U - A kind of switch power amplifying circuit - Google Patents
A kind of switch power amplifying circuit Download PDFInfo
- Publication number
- CN204334495U CN204334495U CN201420707832.2U CN201420707832U CN204334495U CN 204334495 U CN204334495 U CN 204334495U CN 201420707832 U CN201420707832 U CN 201420707832U CN 204334495 U CN204334495 U CN 204334495U
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- resistance
- power amplifier
- electric capacity
- triode
- output
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Abstract
The utility model discloses a kind of switch power amplifying circuit, it is characterized in that, primarily of power amplifier P1, power amplifier P2, power amplifier P3, be serially connected in the resistance R1 between the output of power amplifier P1 and negative input and electric capacity C1, be serially connected in the resistance R2 between the output of power amplifier P2 and electrode input end and electric capacity C2, base stage be connected with the output of power amplifier P1, the composition such as triode Q1 that collector electrode is connected with the electrode input end of power amplifier P3 after resistance R3.Overall structure of the present utility model is comparatively simple, is convenient to make and apply.Meanwhile, the utility model can effectively reduce the attenuation amplitude of amplifying signal, thus guarantees the performance of amplifying signal.
Description
Technical field
The utility model relates to a kind of amplifying circuit, specifically refers to a kind of switch power amplifying circuit.
Background technology
At present, widely, relevant voltage signal, current signal and other pulse signals are mainly carried out power amplification by according to demand in the utilization of power amplification circuit.But, traditional power amplification circuit is after carrying out power drive amplification, and not only the attenuation amplitude of its amplifying signal is comparatively large, but also can be subject to outside electromagnetic interference, and then make amplifying signal performance comparatively unstable, serious constrains using and promoting of its profound level.
Utility model content
The purpose of this utility model is to overcome the defect of the comparatively large and amplified signal unstable properties of signal attenuation amplitude after the amplification that current power amplification circuit exists, provides a kind of brand-new switch power amplifying circuit.
The purpose of this utility model is achieved through the following technical solutions: a kind of switch power amplifying circuit, primarily of power amplifier P1, power amplifier P2, power amplifier P3, be serially connected in the resistance R1 between the output of power amplifier P1 and negative input and electric capacity C1, be serially connected in the resistance R2 between the output of power amplifier P2 and electrode input end and electric capacity C2, base stage is connected with the output of power amplifier P1, the triode Q1 that collector electrode is connected with the electrode input end of power amplifier P3 after resistance R3, base stage is connected with the emitter of triode Q1, the triode Q2 that collector electrode is connected with the negative input of power amplifier P3 after resistance R4, base stage is connected with the output of power amplifier P2 after resistance R6, the triode Q3 that collector electrode is connected with the base stage of triode Q2 after resistance R5, positive pole is connected with the negative input of power amplifier P3, and negative pole is connected with the emitter of triode Q2 and the electric capacity C4 of ground connection, the electric capacity C3 be in parallel with resistance R6, one end is connected with the base stage of triode Q3, the resistance R7 of the external-4V voltage of the other end, one end is connected with the emitter of triode Q3, the resistance R8 of the external-4V voltage of the other end, the electric capacity C5 be in parallel with resistance R8, and N pole is connected with the collector electrode of triode Q1, the diode D1 of the extremely external-4V voltage of P forms, the negative input of described power amplifier P1 is also connected with the electrode input end of power amplifier P2.
For guaranteeing result of use, described electric capacity C1 and electric capacity C2 is patch capacitor, and described electric capacity C3, electric capacity C4 and electric capacity C5 are then electrochemical capacitor.
Further, the resistance of described resistance R1, resistance R2 is 10K Ω, and the resistance of resistance R3, resistance R4, resistance R5, resistance R6, resistance R7 and resistance R8 is 20K Ω.
The utility model comparatively prior art is compared, and has the following advantages and beneficial effect:
(1) overall structure of the present utility model is comparatively simple, is convenient to make and apply.
(2) the utility model can effectively reduce the attenuation amplitude of amplifying signal, thus guarantees the performance of amplifying signal.
(3) the utility model can effectively reduce the interference of external electromagnetic environment, thus avoids amplifying signal to mix remaining electromagnetic wave, ensures the purity of amplifying signal.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with embodiment, the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
Embodiment
As shown in Figure 1, switch power amplifying circuit described in the utility model, primarily of power amplifier P1, power amplifier P2, power amplifier P3, triode Q1, triode Q2, triode Q3, be serially connected in the one-level RC filter circuit between the output of power amplifier P1 and negative input, be serially connected in the secondary RC filter circuit between the output of power amplifier P2 and electrode input end, and resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, electric capacity C3, electric capacity C4, electric capacity C5 and diode D1 form.
Wherein, described one-level RC filtered electrical routing resistance R1 and electric capacity C1 is formed in parallel, namely between resistance R1 and the electric capacity C1 negative input that is all serially connected in power amplifier P1 and output; Described secondary RC filter circuit is then formed in parallel by resistance R2 and electric capacity C2, namely between resistance R2 and the electric capacity C2 electrode input end that is all serially connected in power amplifier P2 and output.Meanwhile, the negative input of power amplifier P1 is also connected with the electrode input end of power amplifier P2.
The base stage of triode Q1 is connected with the output of power amplifier P1, and its collector electrode is connected with the electrode input end of power amplifier P3 after resistance R3, and its emitter is then connected with the base stage of triode Q2; The collector electrode of triode Q2 is connected with the negative input of power amplifier P3 after resistance R4, meanwhile, and the collector electrode also external+10V voltage of this triode Q2.
The base stage of triode Q3 is connected with the output of power amplifier P2 after resistance R6, and its collector electrode is then connected with the base stage of triode Q2 after resistance R5.Electric capacity C3 is then in parallel with resistance R6, and for guaranteeing effect, this electric capacity C3 preferentially adopts electrochemical capacitor to realize.During connection, the negative pole of electric capacity C3 is connected with the base stage of triode Q3, and its positive pole is then connected with the output of power amplifier P2.The positive pole of electric capacity C4 is connected with the negative input of power amplifier P3, and its negative pole is then connected with the emitter of triode Q2.Meanwhile, the negative pole of this electric capacity C4 and the equal ground connection of emitter of triode Q2.
One end of resistance R7 is connected with the base stage of triode Q3, the voltage of the external-4V of its other end; And one end of resistance R8 is connected with the emitter of triode Q3, the voltage of its other end then external equally-4V.Electric capacity C5 is then in parallel with resistance R8.Equally, described electric capacity C4 and electric capacity C5 also all adopts electrochemical capacitor to realize.
The N pole of described diode D1 is connected with the collector electrode of triode Q1, and its P pole is at the voltage of external-4V.
For guaranteeing the normal operation of power amplifier P1 and power amplifier P2, this electric capacity C1 and electric capacity C2 all preferentially adopts patch capacitor to realize.And the resistance of resistance R1, resistance R2 is 10K Ω, the resistance of resistance R3, resistance R4, resistance R5, resistance R6, resistance R7 and resistance R8 is 20K Ω.
Now, the electrode input end of power amplifier P1 draws the input forming whole switch power amplifying circuit together with the negative input of power amplifier P2, and the output of power amplifier P3 then forms the output of whole switch power amplifying circuit.
As mentioned above, just the utility model can well be realized.
Claims (3)
1. a switch power amplifying circuit, it is characterized in that, primarily of power amplifier P1, power amplifier P2, power amplifier P3, be serially connected in the resistance R1 between the output of power amplifier P1 and negative input and electric capacity C1, be serially connected in the resistance R2 between the output of power amplifier P2 and electrode input end and electric capacity C2, base stage is connected with the output of power amplifier P1, the triode Q1 that collector electrode is connected with the electrode input end of power amplifier P3 after resistance R3, base stage is connected with the emitter of triode Q1, the triode Q2 that collector electrode is connected with the negative input of power amplifier P3 after resistance R4, base stage is connected with the output of power amplifier P2 after resistance R6, the triode Q3 that collector electrode is connected with the base stage of triode Q2 after resistance R5, positive pole is connected with the negative input of power amplifier P3, and negative pole is connected with the emitter of triode Q2 and the electric capacity C4 of ground connection, the electric capacity C3 be in parallel with resistance R6, one end is connected with the base stage of triode Q3, the resistance R7 of the external-4V voltage of the other end, one end is connected with the emitter of triode Q3, the resistance R8 of the external-4V voltage of the other end, the electric capacity C5 be in parallel with resistance R8, and N pole is connected with the collector electrode of triode Q1, the diode D1 of the extremely external-4V voltage of P forms, the negative input of described power amplifier P1 is also connected with the electrode input end of power amplifier P2.
2. a kind of switch power amplifying circuit according to claim 1, is characterized in that, described electric capacity C1 and electric capacity C2 is patch capacitor; Described electric capacity C3, electric capacity C4 and electric capacity C5 are then electrochemical capacitor.
3. a kind of switch power amplifying circuit according to claim 2, is characterized in that, the resistance of described resistance R1, resistance R2 is 10K Ω, and the resistance of resistance R3, resistance R4, resistance R5, resistance R6, resistance R7 and resistance R8 is 20K Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420707832.2U CN204334495U (en) | 2014-11-22 | 2014-11-22 | A kind of switch power amplifying circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420707832.2U CN204334495U (en) | 2014-11-22 | 2014-11-22 | A kind of switch power amplifying circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204334495U true CN204334495U (en) | 2015-05-13 |
Family
ID=53170802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420707832.2U Expired - Fee Related CN204334495U (en) | 2014-11-22 | 2014-11-22 | A kind of switch power amplifying circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204334495U (en) |
-
2014
- 2014-11-22 CN CN201420707832.2U patent/CN204334495U/en not_active Expired - Fee Related
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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: 20150513 Termination date: 20151122 |
|
| EXPY | Termination of patent right or utility model |