CN104467697A - Linear drive based bias current source amplifier system - Google Patents
Linear drive based bias current source amplifier system Download PDFInfo
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- CN104467697A CN104467697A CN201410714806.7A CN201410714806A CN104467697A CN 104467697 A CN104467697 A CN 104467697A CN 201410714806 A CN201410714806 A CN 201410714806A CN 104467697 A CN104467697 A CN 104467697A
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Abstract
The invention discloses a linear drive based bias current source amplifier system. The linear drive based bias current source amplifier system mainly consists of a field-effect tube Q1, a polar capacitor C1, a resistor R4, a current source circuit and an amplification circuit, wherein the negative pole of the polar capacitor C1 is connected with the grid electrode of the field-effect tube Q1, the positive pole of the polar capacitor C1 serves as a signal input end, one end of the resistor R4 is connected with the grid electrode of the field-effect tube Q1, the other end of the resistor R4 is grounded, and the current source circuit is connected with the source electrode of the field-effect tube Q1. The linear drive based bias current source amplifier system is characterized in that a linear drive circuit is further connected between the drain electrode of the field-effect tube Q1 and the amplification circuit and consists of a drive chip U, an audion VT3, an audion VT4, an audion VT5, an audion VT6 and the like. The linear drive circuit of the linear drive based bias current source amplifier system can stably drive the amplifier system, and accordingly the amplification effect of an amplifier is improved.
Description
Technical field
The present invention relates to electronic applications, specifically refer to a kind of bias current sources amplifier system based on Linear Driving.
Background technology
Amplifier is the circuit unit with very high-amplification-factor.In side circuit, usually jointly form certain functional module in conjunction with feedback network.Amplifier is the circuit unit that an angle from function is named, and can be realized, also can be implemented in the middle of semiconductor chip by discrete device.Along with the development of semiconductor technology, most amplifier exists with the form of single-chip.Along with the development of electronic technology, amplifier has been widely used in the middle of electron trade.But the amplifier used at present signal is amplified after through often there will be the situation of distorted signals, bring very large trouble to the follow-up process to signal.
Summary of the invention
The object of the invention is to overcome the defect that distortion appears in current amplifier institute amplifying signal, provide a kind of can the distortionless bias current sources amplifier system based on Linear Driving that signal is amplified.
The following technical scheme of object of the present invention realizes: based on the bias current sources amplifier system of Linear Driving, primarily of field effect transistor Q1, negative pole is connected with the grid of field effect transistor Q1, positive pole is as the polar capacitor C1 of signal input part, one end is connected with the grid of field effect transistor Q1, the resistance R4 of other end ground connection, the current source circuit be connected with the source electrode of field effect transistor Q1, and amplifying circuit composition, be also connected with linear drive circuit between the drain electrode of scene effect pipe Q1 and amplifying circuit, described linear drive circuit is by driving chip U, triode VT3, triode VT4, triode VT5, triode VT6, positive pole is connected with the drain electrode of field effect transistor Q1, the polar capacitor C3 that negative pole is connected with the IN1 pin of driving chip U after resistance R10, one end is connected with the collector electrode of triode VT6, the resistance R11 that the other end is connected with the base stage of triode VT3 after resistance R12, positive pole is connected with the base stage of triode VT6, the polar capacitor C5 that negative pole is connected with the IN1 pin of driving chip U, positive pole is connected with the IN2 pin of driving chip U, the polar capacitor C4 of minus earth, one end is connected with the emitter of triode VT6, the resistance R14 that the other end is connected with the base stage of triode VT5, one end is connected with the base stage of triode VT5, the resistance R13 that the other end is connected with the base stage of triode VT3, N pole is connected with the collector electrode of triode VT6, the diode D2 that P pole is connected with the collector electrode of triode VT5, positive terminal is connected with the collector electrode of triode VT6, the not gate K that end of oppisite phase is connected with triode VT4 collector electrode, one end is connected with triode VT4 emitter, the resistance R16 that the other end is connected with the emitter of triode VT3 after resistance R15, the end of oppisite phase of P pole NAND gate K is connected, the diode D3 that N pole is connected with the tie point of resistance R16 with resistance R15 forms, the VCC pin of described driving chip U is connected with the base stage of triode VT6, END pin ground connection, OUT pin are connected with the collector electrode of triode VT5, the collector electrode of triode VT5 is also connected with the base stage of triode VT4, its emitter is connected with the base stage of triode VT3, the grounded collector of triode VT3, the N pole of diode D3 is connected with amplifying circuit.
Described current source circuit is by triode VT1, triode VT2, the voltage stabilizing didoe D1 that N pole is connected with the base stage of triode VT1, P pole is connected with the emitter of triode VT1 after resistance R2, one end is connected with the base stage of triode VT1, the resistance R1 of other end ground connection, and the polar capacitor C2 that negative pole is connected with the drain electrode of field effect transistor Q1, positive pole is connected with the emitter of triode VT2 after resistance R3 forms; The described collector electrode of triode VT1 is connected with the source electrode of field effect transistor Q1, its emitter is then connected with the base stage of triode VT2, the grounded collector of triode VT2, and the P pole of voltage stabilizing didoe D1 is connected with external power source.
Described amplifying circuit is by amplification chip P, one end is connected with the forward end of amplification chip P after resistance R7, the resistance R5 of other end ground connection, the resistance R6 that one end is connected with the tie point of resistance R7 with resistance R5, the other end is connected with the backward end of amplification chip P after resistance R8, the resistance R9 be serially connected with between the backward end of amplification chip P and output form; Resistance R5 is connected with the N pole of diode D3 with the tie point of resistance R7, the tie point ground connection of resistance R6 and resistance R8.
Described driving chip U is LM387 integrated chip.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) the driving amplifier system that linear drive circuit of the present invention can be stable, thus the amplification effect of improvement amplifier.
(2) the present invention adopts LM387 chip as driving chip, its highly sensitive, low price.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 is the structural representation of linear drive circuit of the present invention.
Embodiment
Below in conjunction with specific 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, bias current sources amplifier system based on Linear Driving of the present invention, primarily of field effect transistor Q1, negative pole is connected with the grid of field effect transistor Q1, positive pole is as the polar capacitor C1 of signal input part, one end is connected with the grid of field effect transistor Q1, the resistance R4 of other end ground connection, the current source circuit be connected with the source electrode of field effect transistor Q1, and amplifying circuit composition, be also connected with linear drive circuit between the drain electrode of scene effect pipe Q1 and amplifying circuit.
As shown in Figure 2, described linear drive circuit is by driving chip U, triode VT3, triode VT4, triode VT5, triode VT6, positive pole is connected with the drain electrode of field effect transistor Q1, the polar capacitor C3 that negative pole is connected with the IN1 pin of driving chip U after resistance R10, one end is connected with the collector electrode of triode VT6, the resistance R11 that the other end is connected with the base stage of triode VT3 after resistance R12, positive pole is connected with the base stage of triode VT6, the polar capacitor C5 that negative pole is connected with the IN1 pin of driving chip U, positive pole is connected with the IN2 pin of driving chip U, the polar capacitor C4 of minus earth, one end is connected with the emitter of triode VT6, the resistance R14 that the other end is connected with the base stage of triode VT5, one end is connected with the base stage of triode VT5, the resistance R13 that the other end is connected with the base stage of triode VT3, N pole is connected with the collector electrode of triode VT6, the diode D2 that P pole is connected with the collector electrode of triode VT5, positive terminal is connected with the collector electrode of triode VT6, the not gate K that end of oppisite phase is connected with triode VT4 collector electrode, one end is connected with triode VT4 emitter, the resistance R16 that the other end is connected with the emitter of triode VT3 after resistance R15, the end of oppisite phase of P pole NAND gate K is connected, the diode D3 that N pole is connected with the tie point of resistance R16 with resistance R15 forms, the VCC pin of described driving chip U is connected with the base stage of triode VT6, END pin ground connection, OUT pin are connected with the collector electrode of triode VT5, the collector electrode of triode VT5 is also connected with the base stage of triode VT4, its emitter is connected with the base stage of triode VT3, the grounded collector of triode VT3, the N pole of diode D3 is connected with amplifying circuit.Linear drive circuit can be stable driving amplifier system, thus improvement amplifier amplification effect.Meanwhile, described driving chip U is LM387 integrated chip, its highly sensitive, low price.
Described current source circuit is by triode VT1, triode VT2, the voltage stabilizing didoe D1 that N pole is connected with the base stage of triode VT1, P pole is connected with the emitter of triode VT1 after resistance R2, one end is connected with the base stage of triode VT1, the resistance R1 of other end ground connection, and the polar capacitor C2 that negative pole is connected with the drain electrode of field effect transistor Q1, positive pole is connected with the emitter of triode VT2 after resistance R3 forms; The described collector electrode of triode VT1 is connected with the source electrode of field effect transistor Q1, its emitter is then connected with the base stage of triode VT2, the grounded collector of triode VT2, and the P pole of voltage stabilizing didoe D1 is connected with external power source.
Described amplifying circuit is by amplification chip P, one end is connected with the forward end of amplification chip P after resistance R7, the resistance R5 of other end ground connection, the resistance R6 that one end is connected with the tie point of resistance R7 with resistance R5, the other end is connected with the backward end of amplification chip P after resistance R8, the resistance R9 be serially connected with between the backward end of amplification chip P and output form; Resistance R5 is connected with the N pole of diode D3 with the tie point of resistance R7, the tie point ground connection of resistance R6 and resistance R8.
As mentioned above, just well the present invention can be realized.
Claims (4)
1. based on the bias current sources amplifier system of Linear Driving, primarily of field effect transistor Q1, negative pole is connected with the grid of field effect transistor Q1, positive pole is as the polar capacitor C1 of signal input part, one end is connected with the grid of field effect transistor Q1, the resistance R4 of other end ground connection, the current source circuit be connected with the source electrode of field effect transistor Q1, and amplifying circuit composition, it is characterized in that: between the drain electrode of scene effect pipe Q1 and amplifying circuit, be also connected with linear drive circuit, described linear drive circuit is by driving chip U, triode VT3, triode VT4, triode VT5, triode VT6, positive pole is connected with the drain electrode of field effect transistor Q1, the polar capacitor C3 that negative pole is connected with the IN1 pin of driving chip U after resistance R10, one end is connected with the collector electrode of triode VT6, the resistance R11 that the other end is connected with the base stage of triode VT3 after resistance R12, positive pole is connected with the base stage of triode VT6, the polar capacitor C5 that negative pole is connected with the IN1 pin of driving chip U, positive pole is connected with the IN2 pin of driving chip U, the polar capacitor C4 of minus earth, one end is connected with the emitter of triode VT6, the resistance R14 that the other end is connected with the base stage of triode VT5, one end is connected with the base stage of triode VT5, the resistance R13 that the other end is connected with the base stage of triode VT3, N pole is connected with the collector electrode of triode VT6, the diode D2 that P pole is connected with the collector electrode of triode VT5, positive terminal is connected with the collector electrode of triode VT6, the not gate K that end of oppisite phase is connected with triode VT4 collector electrode, one end is connected with triode VT4 emitter, the resistance R16 that the other end is connected with the emitter of triode VT3 after resistance R15, the end of oppisite phase of P pole NAND gate K is connected, the diode D3 that N pole is connected with the tie point of resistance R16 with resistance R15 forms, the VCC pin of described driving chip U is connected with the base stage of triode VT6, END pin ground connection, OUT pin are connected with the collector electrode of triode VT5, the collector electrode of triode VT5 is also connected with the base stage of triode VT4, its emitter is connected with the base stage of triode VT3, the grounded collector of triode VT3, the N pole of diode D3 is connected with amplifying circuit.
2. the bias current sources amplifier system based on Linear Driving according to claim 1, it is characterized in that: described current source circuit is by triode VT1, triode VT2, the voltage stabilizing didoe D1 that N pole is connected with the base stage of triode VT1, P pole is connected with the emitter of triode VT1 after resistance R2, one end is connected with the base stage of triode VT1, the resistance R1 of other end ground connection, and the polar capacitor C2 that negative pole is connected with the drain electrode of field effect transistor Q1, positive pole is connected with the emitter of triode VT2 after resistance R3 forms; The described collector electrode of triode VT1 is connected with the source electrode of field effect transistor Q1, its emitter is then connected with the base stage of triode VT2, the grounded collector of triode VT2, and the P pole of voltage stabilizing didoe D1 is connected with external power source.
3. the bias current sources amplifier system based on Linear Driving according to claim 2, it is characterized in that: described amplifying circuit is by amplification chip P, one end is connected with the forward end of amplification chip P after resistance R7, the resistance R5 of other end ground connection, the resistance R6 that one end is connected with the tie point of resistance R7 with resistance R5, the other end is connected with the backward end of amplification chip P after resistance R8, the resistance R9 be serially connected with between the backward end of amplification chip P and output form; Resistance R5 is connected with the N pole of diode D3 with the tie point of resistance R7, the tie point ground connection of resistance R6 and resistance R8.
4. the bias current sources amplifier system based on Linear Driving according to any one of claims 1 to 3, is characterized in that: described driving chip U is LM387 integrated chip.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410714806.7A CN104467697A (en) | 2014-11-29 | 2014-11-29 | Linear drive based bias current source amplifier system |
| CN201510321293.8A CN104967413A (en) | 2014-11-29 | 2015-06-12 | Amplifier system for bias current source based on step-down constant current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410714806.7A CN104467697A (en) | 2014-11-29 | 2014-11-29 | Linear drive based bias current source amplifier system |
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| Publication Number | Publication Date |
|---|---|
| CN104467697A true CN104467697A (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410714806.7A Pending CN104467697A (en) | 2014-11-29 | 2014-11-29 | Linear drive based bias current source amplifier system |
| CN201510321293.8A Withdrawn CN104967413A (en) | 2014-11-29 | 2015-06-12 | Amplifier system for bias current source based on step-down constant current |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510321293.8A Withdrawn CN104967413A (en) | 2014-11-29 | 2015-06-12 | Amplifier system for bias current source based on step-down constant current |
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| CN (2) | CN104467697A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104835496A (en) * | 2015-05-30 | 2015-08-12 | 宁波摩米创新工场电子科技有限公司 | High-definition voice recognition system based on linear driving |
| CN104848907A (en) * | 2015-04-13 | 2015-08-19 | 成都诚邦动力测试仪器有限公司 | Engine fuel consumption measuring system based on trigger booster circuit |
| CN104967413A (en) * | 2014-11-29 | 2015-10-07 | 成都颉盛科技有限公司 | Amplifier system for bias current source based on step-down constant current |
| CN109379095A (en) * | 2018-09-30 | 2019-02-22 | 张健 | A kind of construction of the highway monitoring system based on Internet of Things |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2199636Y (en) * | 1994-03-29 | 1995-05-31 | 许天昀 | Current transformer |
| US6724556B2 (en) * | 2001-06-29 | 2004-04-20 | Texas Instruments Incorporated | Single pole voltage bias loop for increased stability |
| CN103440011B (en) * | 2013-08-29 | 2015-05-06 | 上海芯芒半导体有限公司 | Linear constant-current-source circuit having voltage difference compensation |
| CN104467697A (en) * | 2014-11-29 | 2015-03-25 | 成都思茂科技有限公司 | Linear drive based bias current source amplifier system |
-
2014
- 2014-11-29 CN CN201410714806.7A patent/CN104467697A/en active Pending
-
2015
- 2015-06-12 CN CN201510321293.8A patent/CN104967413A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104967413A (en) * | 2014-11-29 | 2015-10-07 | 成都颉盛科技有限公司 | Amplifier system for bias current source based on step-down constant current |
| CN104848907A (en) * | 2015-04-13 | 2015-08-19 | 成都诚邦动力测试仪器有限公司 | Engine fuel consumption measuring system based on trigger booster circuit |
| CN104835496A (en) * | 2015-05-30 | 2015-08-12 | 宁波摩米创新工场电子科技有限公司 | High-definition voice recognition system based on linear driving |
| CN109379095A (en) * | 2018-09-30 | 2019-02-22 | 张健 | A kind of construction of the highway monitoring system based on Internet of Things |
| CN109379095B (en) * | 2018-09-30 | 2020-05-29 | 南通诚友信息技术有限公司 | Highway construction monitored control system based on thing networking |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104967413A (en) | 2015-10-07 |
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Application publication date: 20150325 |