CN104410372A - Logic protection amplifying circuit based switching power amplification system - Google Patents
Logic protection amplifying circuit based switching power amplification system Download PDFInfo
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- CN104410372A CN104410372A CN201410699833.1A CN201410699833A CN104410372A CN 104410372 A CN104410372 A CN 104410372A CN 201410699833 A CN201410699833 A CN 201410699833A CN 104410372 A CN104410372 A CN 104410372A
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Abstract
The invention discloses a logic protection amplifying circuit based switching power amplification system. The system mainly comprises a power amplifier P1, a power amplifier P2, a power amplifier P3, a resistor R1 and a capacitor C1 connected in series between the output end and the cathode input end of the power amplifier P1, a resistor R2 and a capacitor C2 connected in series between the output end and the anode input end of the power amplifier P2 and an audion Q1. A base electrode of the audion Q1 is connected with the output end of the power amplifier P1, and a collector electrode is connected with the anode input end of the power amplifier P3 after passing a resistor R3. Meanwhile, a logic protection amplification circuit is arranged. The system is simple in overall structure, convenient to fabricate and promote and apply and capable of reducing attenuation ranges of amplification signals effectively and guaranteeing the performances of the amplification signals.
Description
Technical field
The present invention relates to a kind of amplifying circuit, specifically refer to the switch power amplification system of a kind of logic-based protection 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.
Summary of the invention
The object of the invention 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, provide a kind of logic-based to protect the switch power amplification system of amplifying circuit.
Object of the present invention is achieved through the following technical solutions: a kind of switch power amplification system of logic-based protection 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.
Meanwhile, between the emitter and the base stage of triode Q2 of triode Q1, virtual protection amplifying circuit is also serially connected with, this virtual protection amplifying circuit is primarily of power amplifier P4, power amplifier P5, NAND gate IC1, NAND gate IC2, negative pole is connected with the electrode input end of power amplifier P4, the polar capacitor C6 that positive pole is connected with the negative input of NAND gate IC2 after resistance R12, one end is connected with the negative input of NAND gate IC1, the resistance R9 that the other end is connected with the electrode input end of power amplifier P4, be serially connected in the resistance R10 between the negative input of power amplifier P4 and output, one end is connected with the output of NAND gate IC1, the resistance R11 that the other end is connected with the negative input of power amplifier P5, be serially connected in the polar capacitor C7 between the electrode input end of power amplifier P5 and output, positive pole is connected with the output of NAND gate IC2, negative pole is in turn through electric capacity C8 that voltage stabilizing didoe D2 is connected with the output of power amplifier P4 after resistance R13, P pole is connected with the output of power amplifier P5, N pole is in turn through diode D3 that resistance R15 is connected with the tie point of resistance R13 with voltage stabilizing didoe D2 after resistance R14, and N pole is connected with the negative pole of electric capacity C8, the voltage stabilizing didoe D4 that P pole is connected with the tie point of resistance R15 with diode D3 forms, the electrode input end of described NAND gate IC1 is connected with the negative input of power amplifier P4, the electrode input end of the output NAND gate IC2 of power amplifier P5 is connected, and its electrode input end is then connected with the output of power amplifier P4, the positive pole of described polar capacitor C6 is connected with the emitter of triode Q1, and resistance R14 is then connected with the base stage of triode Q2 with the tie point of resistance R15.
Further, 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.
The resistance of described resistance R1, resistance R2 is 10 K Ω, and the resistance of resistance R3, resistance R4, resistance R5, resistance R6, resistance R7 and resistance R8 is 20 K Ω.
The present invention comparatively prior art compares, and has the following advantages and beneficial effect:
(1) overall structure of the present invention is comparatively simple, is convenient to make and apply.
(2) the present invention can effectively reduce the attenuation amplitude of amplifying signal, thus guarantees the performance of amplifying signal.
(3) the present invention 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 invention.
Fig. 2 is virtual protection amplification circuit structure schematic diagram of the present invention.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
As shown in Figure 1; the present invention is 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, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, electric capacity C3, electric capacity C4, electric capacity C5, diode D1 and virtual protection amplifying circuit 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 10 K Ω, the resistance of resistance R3, resistance R4, resistance R5, resistance R6, resistance R7 and resistance R8 is 20 K Ω.
The structure of described virtual protection amplifying circuit as shown in Figure 2, namely it is primarily of power amplifier P4, power amplifier P5, NAND gate IC1, NAND gate IC2, negative pole is connected with the electrode input end of power amplifier P4, the polar capacitor C6 that positive pole is connected with the negative input of NAND gate IC2 after resistance R12, one end is connected with the negative input of NAND gate IC1, the resistance R9 that the other end is connected with the electrode input end of power amplifier P4, be serially connected in the resistance R10 between the negative input of power amplifier P4 and output, one end is connected with the output of NAND gate IC1, the resistance R11 that the other end is connected with the negative input of power amplifier P5, be serially connected in the polar capacitor C7 between the electrode input end of power amplifier P5 and output, positive pole is connected with the output of NAND gate IC2, negative pole is in turn through electric capacity C8 that voltage stabilizing didoe D2 is connected with the output of power amplifier P4 after resistance R13, P pole is connected with the output of power amplifier P5, N pole is in turn through diode D3 that resistance R15 is connected with the tie point of resistance R13 with voltage stabilizing didoe D2 after resistance R14, and N pole is connected with the negative pole of electric capacity C8, the voltage stabilizing didoe D4 that P pole is connected with the tie point of resistance R15 with diode D3 forms.
Meanwhile, when connecting, the electrode input end of described NAND gate IC1 will be connected with the negative input of power amplifier P4; The electrode input end of the output NAND gate IC2 of power amplifier P5 is connected, and its electrode input end is then connected with the output of power amplifier P4.
The positive pole of described polar capacitor C6 is connected with the emitter of triode Q1, and resistance R14 is then connected with the base stage of triode Q2 with the tie point of resistance R15.
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 present invention can well be realized.
Claims (3)
1. the switch power amplification system of a logic-based protection 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, it is characterized in that, between the emitter and the base stage of triode Q2 of triode Q1, be also serially connected with virtual protection amplifying circuit, this virtual protection amplifying circuit is primarily of power amplifier P4, power amplifier P5, NAND gate IC1, NAND gate IC2, negative pole is connected with the electrode input end of power amplifier P4, the polar capacitor C6 that positive pole is connected with the negative input of NAND gate IC2 after resistance R12, one end is connected with the negative input of NAND gate IC1, the resistance R9 that the other end is connected with the electrode input end of power amplifier P4, be serially connected in the resistance R10 between the negative input of power amplifier P4 and output, one end is connected with the output of NAND gate IC1, the resistance R11 that the other end is connected with the negative input of power amplifier P5, be serially connected in the polar capacitor C7 between the electrode input end of power amplifier P5 and output, positive pole is connected with the output of NAND gate IC2, negative pole is in turn through electric capacity C8 that voltage stabilizing didoe D2 is connected with the output of power amplifier P4 after resistance R13, P pole is connected with the output of power amplifier P5, N pole is in turn through diode D3 that resistance R15 is connected with the tie point of resistance R13 with voltage stabilizing didoe D2 after resistance R14, and N pole is connected with the negative pole of electric capacity C8, the voltage stabilizing didoe D4 that P pole is connected with the tie point of resistance R15 with diode D3 forms, the electrode input end of described NAND gate IC1 is connected with the negative input of power amplifier P4, the electrode input end of the output NAND gate IC2 of power amplifier P5 is connected, and its electrode input end is then connected with the output of power amplifier P4, the positive pole of described polar capacitor C6 is connected with the emitter of triode Q1, and resistance R14 is then connected with the base stage of triode Q2 with the tie point of resistance R15.
2. the switch power amplification system of a kind of logic-based protection amplifying circuit according to claim 1, it 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. the switch power amplification system of a kind of logic-based protection amplifying circuit according to claim 2; it is characterized in that; the resistance of described resistance R1, resistance R2 is 10 K Ω, and the resistance of resistance R3, resistance R4, resistance R5, resistance R6, resistance R7 and resistance R8 is 20 K Ω.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410699833.1A CN104410372A (en) | 2014-11-27 | 2014-11-27 | Logic protection amplifying circuit based switching power amplification system |
| CN201510311692.6A CN104901640A (en) | 2014-11-27 | 2015-06-09 | Hybrid protection switching power amplifying system based on logical protection amplifying circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410699833.1A CN104410372A (en) | 2014-11-27 | 2014-11-27 | Logic protection amplifying circuit based switching power amplification system |
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| Publication Number | Publication Date |
|---|---|
| CN104410372A true CN104410372A (en) | 2015-03-11 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410699833.1A Pending CN104410372A (en) | 2014-11-27 | 2014-11-27 | Logic protection amplifying circuit based switching power amplification system |
| CN201510311692.6A Withdrawn CN104901640A (en) | 2014-11-27 | 2015-06-09 | Hybrid protection switching power amplifying system based on logical protection amplifying circuit |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510311692.6A Withdrawn CN104901640A (en) | 2014-11-27 | 2015-06-09 | Hybrid protection switching power amplifying system based on logical protection amplifying circuit |
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| Country | Link |
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| CN (2) | CN104410372A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107424280A (en) * | 2017-04-06 | 2017-12-01 | 广州网展网络科技有限公司 | Intelligent museum management system |
-
2014
- 2014-11-27 CN CN201410699833.1A patent/CN104410372A/en active Pending
-
2015
- 2015-06-09 CN CN201510311692.6A patent/CN104901640A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107424280A (en) * | 2017-04-06 | 2017-12-01 | 广州网展网络科技有限公司 | Intelligent museum management system |
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| CN104901640A (en) | 2015-09-09 |
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| PB01 | Publication | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150311 |