CN107124143B - Bidirectional high-voltage output linear amplifying circuit - Google Patents
Bidirectional high-voltage output linear amplifying circuit Download PDFInfo
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- CN107124143B CN107124143B CN201710202939.XA CN201710202939A CN107124143B CN 107124143 B CN107124143 B CN 107124143B CN 201710202939 A CN201710202939 A CN 201710202939A CN 107124143 B CN107124143 B CN 107124143B
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
- H03F1/3211—Modifications of amplifiers to reduce non-linear distortion in differential amplifiers
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
- H03F3/4508—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier using bipolar transistors as the active amplifying circuit
Abstract
The invention relates to the technical field of electronic circuits, and particularly discloses a bidirectional high-voltage output linear amplification circuit which comprises a constant current source circuit, a differential input stage circuit, a series-stage common-emitter voltage amplification circuit, a feedback circuit and a current following output circuit. The circuit solves the problem that the traditional linear proportional amplifying circuit consisting of an operational amplifier and a peripheral circuit cannot realize high-voltage output because the power voltage of the operational amplifier is low. The invention is composed of high-voltage resistant triode, precision resistor and diode, and has high precision and stable performance.
Description
Technical Field
The invention relates to the technical field of electronic circuits, in particular to a bidirectional high-voltage output linear amplifying circuit which needs a high-precision linear adjustable power supply in a precise measuring instrument and meets the requirement of wide-range bidirectional voltage adjustability.
Background
With the development of electronic industry technology, the requirements on the measurement accuracy of instruments and meters are continuously increased, and the precise measurement of electronic components, whether active or passive, is essentially the measurement of voltage and current. The conventional proportional amplifier formed by using an operational amplifier cannot realize high-voltage amplification output due to the limitation of the power supply voltage and the operational amplifier.
Disclosure of Invention
In order to solve the problems of the prior art, the invention provides a bidirectional high-voltage output linear amplifying circuit, which can output an adjustable reference voltage signal with more than plus or minus 210V through linear amplification of the circuit, and a feedback circuit consisting of precision resistors can adjust the output high-precision voltage.
The invention adopts the following technical scheme: the bidirectional high-voltage output linear amplification circuit comprises a constant current source circuit, a differential input stage circuit, a series-connection level common-emitter voltage amplification circuit, a feedback circuit and a current following output circuit, wherein the constant current source circuit is connected with the differential input stage circuit, the differential input stage circuit is connected with the series-connection level common-emitter voltage amplification circuit, the series-connection level common-emitter voltage amplification circuit is connected with the current following output circuit, and the feedback circuit is respectively connected with the differential input stage circuit and the current following output circuit.
The constant current source circuit comprises a third triode, a first resistor, a second resistor, a first capacitor, a first diode group and a second diode, wherein the cathode of the first diode is connected with the anode of the second diode, one end of the first resistor is connected with a power supply I, the other end of the first resistor is connected with the emitting electrode of the third triode, the base electrode of the third triode is connected with one end of the second resistor, one end of the first capacitor and the anode of the first diode, the other end of the second resistor is grounded, and the other end of the first capacitor is connected with the cathode of the second diode and then is connected with a power supply II.
The differential input stage circuit comprises a first triode, a second triode, a fifth resistor, a third capacitor, a sixth resistor, a second capacitor, a fourth resistor and a third resistor, wherein an emitting electrode of the first triode and an emitting electrode of the second triode are connected with a collecting electrode of the first triode together, the collecting electrode of the first triode is connected with a power supply III, a base electrode of the first triode is connected with one end of the fifth resistor, the other end of the fifth resistor is connected with one end of the third capacitor and one end of the sixth resistor, the other end of the third capacitor and the other end of the sixth resistor are grounded, a base electrode of the second triode is connected with one end of the second capacitor and one end of the fourth resistor, the other end of the second capacitor is grounded, the other end of the fourth resistor is connected with one end of the third resistor and then connected with an input interface together, and the other end of the third resistor is grounded.
The series-connection level common-emitter voltage amplifying circuit comprises a fourth triode, a fifth triode, a fourth capacitor, a sixth capacitor, a tenth resistor, an eleventh resistor, a twelfth resistor, a seventh capacitor, a ninth resistor, a twenty-eighth resistor, a third diode, a fourth diode, wherein the cathodes of the third diode and the fourth diode are commonly connected with a power supply IV, the emitter of the fourth triode is connected with the collector of the second triode and the anode of the second diode, the base of the fourth triode is connected with one end of the fourth capacitor and one end of the ninth resistor, the other end of the ninth resistor is connected with the anode of the fourth diode and one end of the twenty-eighth resistor, the other end of the twenty-eighth resistor is connected with one end of the twelfth resistor and one end of the eleventh resistor, the collector of the fourth triode is connected with the emitter of the fifth triode and the other end of the fourth capacitor, the collector of the fifth triode is connected with one end of the sixth capacitor, the base electrode of the fifth triode is connected with the other end of the sixth capacitor and one end of the tenth resistor, the other end of the tenth resistor is connected with one end of the seventh capacitor and the other end of the eleventh resistor, and the other end of the seventh capacitor is grounded.
The feedback circuit comprises a seventh resistor, an eighth resistor, a third capacitor and a sixth resistor, one end of the sixth resistor is connected with one end of the third capacitor and one end of the seventh resistor, and the other end of the seventh resistor and the other end of the third capacitor are connected with one end of the eighth resistor.
The current following output circuit comprises a sixth triode, a seventh triode, an eighth triode, a ninth triode, a thirteenth triode, an eleventh triode, a twenty-seventh resistor, a twelfth capacitor, a sixteenth resistor, a seventeenth resistor, a fifteenth resistor, a twenty-sixth resistor, a twenty-fifth resistor, an eighteenth resistor, a fourteenth resistor, a nineteenth resistor, an eleventh capacitor, a twenty-first resistor, a twenty-second resistor, a twentieth resistor, a thirteenth resistor, a twenty-third resistor, a twenty-fourth resistor, an eighth capacitor, a ninth capacitor, a tenth capacitor, a fifth diode group, a sixth diode group, wherein the anode of the fifth diode is connected with the cathode of the sixth diode, the cathode of the sixth diode is connected with one end of the twelfth capacitor and one end of the twenty-seventh resistor, and is simultaneously connected with a negative 250V power supply, the anode of the fifth diode is connected with the other end of the twelfth capacitor and the base of the ninth triode, the base electrode of the ninth triode is grounded, the emitter electrode of the ninth triode is connected with the other end of the twenty-seventh resistor, the collector electrode of the ninth triode is connected with the emitter electrode of the eighth triode, the base electrode of the eighth triode is connected with one end of the sixteenth resistor, one end of the seventeenth resistor and one end of the fifteenth resistor, the other end of the sixteenth resistor is connected with the negative 250V power supply, the other end of the fifteenth resistor is grounded, the other end of the seventeenth resistor is connected with the other end of the eighth resistor, the output interface and one end of the eighteenth resistor, the other end of the eighteenth resistor is connected with one end of the fourteenth resistor, one end of the nineteenth resistor and the base electrode of the seventh triode, the other end of the fourteenth resistor is grounded, the other end of the nineteenth resistor is connected with the positive 250V power supply, the collector electrode of the eighth triode is connected with the emitter, the base electrode of the thirteenth polar tube is connected with the other end of the twenty-sixth resistor and one end of the twenty-fifth resistor, the collector electrode of the thirteenth polar tube is connected with the other end of the twenty-fifth resistor, the collector electrode of the seventh triode, the collector electrode output of the seventh triode, one end of the eleventh capacitor and one end of the eighth capacitor, the emitter electrode of the seventh triode is connected with the emitter electrode of the sixth triode, the base electrode of the sixth triode is connected with one end of the twenty-first resistor, the other end of the eleventh capacitor and one end of the twenty-second resistor, the other end of the twenty-second resistor is connected with a positive 250V power supply, and the other end of the twenty-first resistor is grounded; the collector of the sixth triode is connected with the collector of the eleventh triode, the base of the eleventh triode is connected with one end of the twentieth resistor, the other end of the twentieth resistor is connected with the other end of the eighth capacitor, one end of the thirteenth resistor and the collector of the fifth triode, the emitter of the eleventh triode is connected with one end of the twentieth resistor and one end of the ninth capacitor, the other end of the twentieth resistor is connected with one end of the twenty-third resistor, one end of the tenth capacitor, the other end of the thirteenth resistor and the other end of the twelfth resistor, meanwhile, the other end of the twentieth resistor, one end of the twenty-third resistor, one end of the tenth capacitor, the other end of the thirteenth resistor and the other end of the twelfth resistor are connected with a positive 250V power supply, and the other end of the ninth capacitor is connected with the other end.
And the power supply I and the power supply II are connected with a negative 15V power supply interface, and the power supply III and the power supply IV are connected with a positive 15V power supply interface.
The invention has the advantages that: certain small signals can be subjected to proportional linear amplification to achieve high-voltage output, and the voltage can reach up to plus-minus 210V output.
Drawings
Fig. 1 is a circuit diagram of the present invention.
FIG. 2 is a tuning tube circuit.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings 1 and 2.
The invention provides a bidirectional high-voltage output linear amplification circuit which comprises a constant current source circuit 1, a differential input stage circuit 2, a series-connection stage common-emitter voltage amplification circuit 3, a feedback circuit 4 and a current following output circuit 5, wherein the constant current source circuit 1 is connected with the differential input stage circuit 2, the differential input stage circuit 2 is connected with the series-connection stage common-emitter voltage amplification circuit 3, the series-connection stage common-emitter voltage amplification circuit 3 is connected with the current following output circuit 5, and the feedback circuit 4 is respectively connected with the differential input stage circuit 2 and the current following output circuit 5.
The constant current source circuit 1 comprises a third triode T3, a first resistor R1, a second resistor R2, a first capacitor C1, a first diode group D1 and a second diode D2, wherein the cathode of the first diode D1 is connected with the anode of the second diode D2, the anode of the first diode is connected with the base of the third triode, the cathode of the second diode is connected with a negative power supply, one end of the first resistor R1 is connected with a power supply I, namely a negative electrode interface of a 15V power supply, the other end of the first resistor R1 is connected with the emitter of a third triode T3, the base of the third triode T3 is connected with one end of the second resistor R2, one end of the first capacitor C1 and the anode of the first diode D1, the other end of the second resistor R2 is grounded, and the other end of the first capacitor C1 is connected with the cathode of the second diode D2 and then is connected with a power supply II, namely a negative electrode interface. The forward voltage drop is fixed in the first diode D1 and the second diode D2, so that a fixed voltage is formed in the first resistor R1, and thus the collector current of the third transistor T3 is constant, and the constant current source circuit 1 serves as a static bias of the differential input stage circuit 2.
The differential input stage circuit 2 comprises a first triode T1, a second triode T2, a fifth resistor R5, a third capacitor C3, a sixth resistor R6, a second capacitor C2, a fourth resistor R4 and a third resistor R3, wherein an emitter of the first triode T1 and an emitter of the second triode T3 are commonly connected with a collector of the first triode T1, a collector of the first triode T1 is connected with a power supply iii, namely a positive input interface of a 15V power supply, a base of the first triode T1 is connected with one end of the fifth resistor R5, the other end of the fifth resistor R5 is connected with one end of the third capacitor C3 and one end of the sixth resistor 686r 9, the other end of the third capacitor C3 and the other end of the sixth resistor R6 are grounded, a base of the second triode T2 is connected with one end of the second capacitor C2 and one end of the fourth resistor R4, the other end of the second capacitor C6957 is grounded, and the other end of the fourth resistor R87458 is connected with a rear end of the third resistor R3, the input interface Vin is connected in common, and the other end of the third resistor R3 is grounded. The base of the second transistor T2 is used as the inverting input terminal, and the base of the first transistor T1 is used as the non-inverting input terminal, and the differential input stage circuit 2 forms the input stage of the present invention.
The series-connected cascode voltage amplifying circuit 3 includes a fourth transistor T4, a fifth transistor T5, a fourth capacitor C4, a sixth capacitor C6, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a seventh capacitor C7, a ninth resistor R9, a twenty-eighth resistor R28, a third diode D3, a fourth diode D4, a third diode D3, and a cathode of the fourth diode D4 commonly connected to the power supply + Vcc, an emitter of the fourth transistor T4 connected to a collector of the second transistor T2 and an anode of the third diode D2, a base of the fourth transistor T2 connected to one end of the fourth capacitor C2 and one end of the ninth resistor R2, the other end of the ninth resistor R2 connected to an anode of the fourth diode D2, one end of the twenty-eighth resistor R2, the other end of the twenty-eighth resistor R2 connected to one end of the twelfth resistor R2 and one end of the eleventh resistor R2, and an emitter of the fifth transistor T2 connected to the emitter of the fourth transistor T2, The other end of the fourth capacitor C4, the collector of the fifth triode T5 is connected to one end of the sixth capacitor C6, the base of the fifth triode T5 is connected to the other end of the sixth capacitor C6 and one end of the tenth resistor R10, the other end of the tenth resistor R10 is connected to one end of the seventh capacitor C7 and the other end of the eleventh resistor R11, and the other end of the seventh capacitor C7 is grounded. The series-connected stage common-emitter voltage amplifying circuit amplifies voltage, the emitter electrode of the fourth triode T4 is used as input, and the collector electrode of the fifth triode is used as output.
The current following output circuit 5 includes a sixth transistor T6, a seventh transistor T6, an eighth transistor T6, a ninth transistor T6, a thirteenth transistor T6, an eleventh transistor T6, a twenty-seventh resistor R6, a twelfth capacitor C6, a sixteenth resistor R6, a seventeenth resistor R6, a fifteenth resistor R6, a twenty-sixth resistor R6, a twenty-fifth resistor R6, an eighteenth resistor R6, a fourteenth resistor R6, a nineteenth resistor R6, an eleventh capacitor C6, a twenty-first resistor R6, a twenty-second resistor R6, a twentieth resistor R6, a thirteenth resistor R6, a twenty-third resistor R6, a twenty-fourth resistor R6, an eighth capacitor C6, a ninth capacitor C6, a tenth capacitor C6, a fifth diode D6, a sixth diode D6, a fifth diode D6, a cathode C6, an anode of the fifth diode D6, a cathode C6 of the twelfth capacitor C6 and a cathode C6 are connected with the anode of the twenty-fifth diode D6, and a cathode of the twenty-fifth diode C6, meanwhile, a negative 250V power supply is connected, the anode of a fifth diode D5 is connected with the other end of a twelfth capacitor C12 and the base of a ninth triode T9, the voltage drop at the two ends is constant after the fifth diode D5 and a sixth diode D6 are connected in series, so that the voltage on a twenty-seventh resistor R27 is constant, the collector current of the ninth triode T9 is constant, the base thereof is grounded, the emitter of the ninth triode T9 is connected with the other end of a twenty-seventh resistor R27, the collector of the ninth triode T9 is connected with the emitter of an eighth triode T8, the base of an eighth triode T8 is connected with one end of a sixteenth resistor R16, one end of a seventeenth resistor R17 and one end of a fifteenth resistor R15, the other end of the sixteenth resistor R16 is connected with the negative 250V power supply, the other end of a fifteenth resistor R15 is grounded, the other end of the seventeenth resistor R17 is connected with the other end of the eighth resistor R8, an, the other end of the eighteenth resistor R18 is connected with one end of a fourteenth resistor R14, one end of a nineteenth resistor R19 and the base of a seventh triode T7, the other end of the fourteenth resistor R14 is grounded, the other end of the nineteenth resistor R19 is connected with a positive 250V power supply, the collector of an eighth triode T8 is connected with the emitter of a thirteenth diode T10 and one end of a twenty-sixth resistor R26, the base of a thirteenth diode T10 is connected with the other end of a twenty-sixth resistor R26 and one end of a twenty-fifth resistor R25, the collector of a thirteenth diode T10 is connected with the other end of a twenty-fifth resistor R25, the collector of a seventh triode T7, one end of an eleventh capacitor C11 and one end of an eighth capacitor C8, the emitter of the seventh triode T7 is connected with the emitter of a sixth triode T6, the base of a sixth triode T6 is connected with one end of a twenty-first resistor R21, the other end of an eleventh capacitor C11 and a twenty-second resistor R22, the other end of the twenty-second resistor R22 is connected with a positive 250V power supply, and the other end of the twenty-first resistor R21 is grounded; the collector of the sixth triode T6 is connected with the collector of the eleventh triode T11, the base of the eleventh triode T11 is connected with one end of a twentieth resistor R20, the other end of the twentieth resistor R20 is connected with the other end of an eighth capacitor C8, one end of a thirteenth resistor R13 and the collector of the fifth triode T5, the emitter of the eleventh triode T11 is connected with one end of a twentieth resistor R24 and one end of a ninth capacitor C9, the other end of the twentieth resistor R24 is connected with one end of a twenty-third resistor R23, one end of a tenth capacitor C10, the other end of a thirteenth resistor R13 and the other end of a twelfth resistor R12, the other end of a twentieth resistor R24, one end of a twenty-third resistor R23, one end of a tenth capacitor C10, the other end of a thirteenth resistor R13 and the other end of a twelfth resistor R12 are connected with a positive 250V power supply, and the other end of the ninth capacitor C9 is connected with the other, The other end of the tenth resistor R10. The thirteenth pole tube T10 and the twenty-fifth and twenty-sixth resistors R25 and R26 form a constant voltage drop. In the current following output, the base of the eleventh triode is used as an input end through a twenty-resistor R20, the collector and the emitter of the thirteenth triode T10 form a fixed voltage drop, the collector of the seventh triode T7 is used as a positive voltage output pushing stage, and the collector of the eighth triode T8 is used as a negative voltage output pushing stage. The output Vout of the regulating tube circuit shown in FIG. 2 is pushed.
The feedback circuit 4 comprises a seventh resistor R7, an eighth resistor R8, a third capacitor C3 and a sixth resistor R6, wherein one end of the sixth resistor R6 is connected with one end of the third capacitor C3 and one end of a seventh resistor R7, and is connected with the base of a first triode T1 at the non-inverting input end of the amplifier input stage through a fifth resistor R5 to form negative feedback; the other end of the seventh resistor R7 and the other end of the third capacitor C3 are commonly connected to one end of an eighth resistor R8. The other end of the eighth resistor R8 is connected with the output end; the output voltage is obtained by the sum of the resistance values of the seventh resistor and the eighth resistor: the proportional relation between the R7+ R8 and the sixth resistor R6 determines the amplification factor of the voltage, so that the ratio of the output voltage Vout of the output stage to the input Vin is equal to the ratio of R7+ R8 to R6.
When the voltage value of the output Vout fluctuates due to load changes, a circuit formed by a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, a seventeenth resistor R17, an eighteenth resistor R18 and a nineteenth resistor R19 changes the base potentials of a seventh triode T7 and an eighth triode T8, so that the collector output V1 of the seventh triode T7 and the collector output V2 of the eighth triode T8 are adjusted. The tuning tube circuit shown in fig. 2 is thus pushed by V1 and V2 to regulate the Vout output.
The circuit has the bidirectional voltage linear amplification function, and when a reference voltage signal of 0V to plus or minus 10V is input into an input port Vin, the linear amplification output Vout outputs a voltage of 0V to plus or minus 210V. The circuit solves the problem that the traditional linear proportional amplifying circuit consisting of an operational amplifier and a peripheral circuit cannot realize high-voltage output because the power voltage of the operational amplifier is low. The high-voltage resistant triode consists of high-voltage resistant triodes (T6, T7, T8, T9, T10 and T11), precise resistors (R6, R7 and R8) and diodes, and has the advantages of high precision and stable performance.
It should be noted that fig. 2 of the present invention is not intended to be a regulator circuit.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the overall concept of the present invention, and these should also be considered as the protection scope of the present invention.
Claims (2)
1. Two-way high voltage output linear amplification circuit, its characterized in that: the current-controlled power supply comprises a constant current source circuit (1), a differential input stage circuit (2), a series-connection stage common-emitter voltage amplification circuit (3), a feedback circuit (4) and a current following output circuit (5), wherein the constant current source circuit (1) is connected with the differential input stage circuit (2), the differential input stage circuit (2) is connected with the series-connection stage common-emitter voltage amplification circuit (3), the series-connection stage common-emitter voltage amplification circuit (3) is connected with the current following output circuit (5), and the feedback circuit (4) is respectively connected with the differential input stage circuit (2) and the current following output circuit (5); the constant current source circuit (1) comprises a third triode (T3), a first resistor (R1), a second resistor (R2), a first capacitor (C1), a first diode (D1) and a second diode (D2), wherein the cathode of the first diode (D1) is connected with the anode of the second diode (D2), one end of the first resistor (R1) is connected with a power supply I, the other end of the first resistor (R1) is connected with the emitter of the third triode (T3), the base of the third triode (T3) is connected with one end of the second resistor (R2), one end of the first capacitor (C1), the anode of the first diode (D1), the other end of the second resistor (R2) is grounded, and the other end of the first capacitor (C1) is connected with the cathode of the second diode (D2) and then is commonly connected with a power supply II; the differential input stage circuit (2) comprises a first triode (T1), a second triode (T2), a fifth resistor (R5), a third capacitor (C3), a sixth resistor (R6), a second capacitor (C2), a fourth resistor (R4) and a third resistor (R3), wherein an emitter of the first triode (T1) and an emitter of the second triode (T3) are connected with a collector of the third triode (T3) together, a collector of the first triode (T1) is connected with a power supply III, a base of the first triode (T1) is connected with one end of the fifth resistor (R5), the other end of the fifth resistor (R5) is connected with one end of the third capacitor (C3), one end of the sixth resistor (R6), the other end of the third capacitor (C3), the other end of the sixth resistor (R6) is grounded, the base of the second triode (T5) is connected with one end of the second capacitor (C3923) and one end of the fourth resistor (R57324, 2), the other end of the second capacitor (C2) is grounded, the other end of the fourth resistor (R4) is connected with one end of the third resistor (R3) and then is commonly connected with the input interface, and the other end of the third resistor (R3) is grounded; the series-stage cascode voltage amplifying circuit (3) comprises a fourth triode (T4), a fifth triode (T5), a fourth capacitor (C4), a sixth capacitor (C6), a tenth resistor (R10), an eleventh resistor (R11), a twelfth resistor (R12), a seventh capacitor (C7), a ninth resistor (R9), a twenty-eighth resistor (R28), a third diode group (D3) and a fourth diode (D4), wherein the cathodes of the third diode (D3) and the fourth diode (D4) are commonly connected with a power supply IV, the emitter of the fourth triode (T4) is connected with the collector of the second triode (T2) and the anode of the third diode (D3), the base of the fourth triode (T4) is connected with one end of the fourth capacitor (C4), one end of a ninth resistor (R9), the other end of the ninth resistor (R9) is connected with one end of the anode of the fourth diode (D4) and the anode of the twenty-eighth resistor (R28), the other end of the twenty-eighth resistor (R28) is connected with one end of a twelfth resistor (R12) and one end of an eleventh resistor (R11), the collector of a fourth triode (T4) is connected with the emitter of a fifth triode (T5) and the other end of a fourth capacitor (C4), the collector of a fifth triode (T5) is connected with one end of a sixth capacitor (C6), the base of the fifth triode (T5) is connected with the other end of a sixth capacitor (C6) and one end of a tenth resistor (R10), the other end of the tenth resistor (R10) is connected with one end of a seventh capacitor (C7) and the other end of an eleventh resistor (R11), and the other end of the seventh capacitor (C7) is grounded; the feedback circuit (4) comprises a seventh resistor (R7), an eighth resistor (R8), a third capacitor (C3) and a sixth resistor (R6), one end of the sixth resistor (R6) is connected with one end of the third capacitor (C3) and one end of the seventh resistor (R7), and the other end of the seventh resistor (R7) and the other end of the third capacitor (C3) are connected with one end of an eighth resistor (R8) in common; the current following output circuit (5) comprises a sixth triode (T6), a seventh triode (T7), an eighth triode (T8), a ninth triode (T9), a thirteenth triode (T10), an eleventh triode (T11), a twenty-seventh resistor (R27), a twelfth capacitor (C12), a sixteenth resistor (R16), a seventeenth resistor (R17), a fifteenth resistor (R15), a twenty-sixth resistor (R26), a twenty-fifth resistor (R25), an eighteenth resistor (R18), a fourteenth resistor (R14), a nineteenth resistor (R19), an eleventh capacitor (C11), a twenty-first resistor (R21), a twenty-second resistor (R22), a twentieth resistor (R22), a thirteenth resistor (R22), a twenty-third resistor (R22), a twenty-fourth resistor (R22), an eighth capacitor (C22), a ninth capacitor (C22), a tenth diode (C22), a twelfth diode (D) and a twelfth diode (R22), A sixth diode (D6), wherein the anode of the fifth diode (D5) is connected with the cathode of the sixth diode (D6), the cathode of the sixth diode (D6) is connected with one end of a twelfth capacitor (C12) and one end of a twenty-seventh resistor (R27), and is simultaneously connected with a negative 250V power supply, the anode of the fifth diode (D5) is connected with the other end of the twelfth capacitor (C12) and the base of a ninth triode (T9), the base of the ninth triode (T9) is grounded, the emitter of the ninth triode (T9) is connected with the other end of the twenty-seventh resistor (R27), the collector of the ninth triode (T9) is connected with the emitter of an eighth triode (T8), the base of the eighth triode (T8) is connected with one end of a sixteenth resistor (R16), one end of a seventeenth resistor (R17), one end of a fifteenth resistor (R15), and the other end of the sixteenth resistor (R16V power supply is connected with the negative 250V power supply, the other end of a fifteenth resistor (R15) is grounded, the other end of a seventeenth resistor (R17) is connected with the other end of an eighth resistor (R8), an output interface and one end of an eighteenth resistor (R18), the other end of the eighteenth resistor (R18) is connected with one end of a fourteenth resistor (R14), one end of a nineteenth resistor (R19) and the base of a seventh triode (T7), the other end of the fourteenth resistor (R14) is grounded, the other end of a nineteenth resistor (R19) is connected with a positive 250V power supply, the collector of an eighth triode (T8) is connected with the emitter of a thirteenth polar tube (T10) and one end of a twenty-sixth resistor (R26), the base of a thirteenth polar tube (T10) is connected with the other end of a twenty-sixth resistor (R26) and one end of a twenty-fifth resistor (R25), the collector of the thirteenth polar tube (T10) is connected with the other end of the twenty-fifth resistor (R25) and the collector of the seventh polar tube (T7), One end of an eleventh capacitor (C11), one end of an eighth capacitor (C8), an emitter of a seventh triode (T7) is connected with a collector of a sixth triode (T6), a base of the sixth triode (T6) is connected with one end of a twenty-first resistor (R21), the other end of an eleventh capacitor (C11) and one end of a twenty-second resistor (R22), the other end of the twenty-second resistor (R22) is connected with a positive 250V power supply, and the other end of the twenty-first resistor (R21) is grounded; the collector of the sixth triode (T6) is connected with the collector of the eleventh triode (T11), the base of the eleventh triode (T11) is connected with one end of a twentieth resistor (R20), the other end of the twentieth resistor (R20) is connected with the other end of an eighth capacitor (C8), one end of a thirteenth resistor (R13) and the collector of the fifth triode (T5), the emitter of the eleventh triode (T11) is connected with one end of a twentieth resistor (R24) and one end of a ninth capacitor (C9), the other end of the twentieth resistor (R24) is connected with one end of a twenty-third resistor (R23), one end of a tenth capacitor (C10), the other end of a thirteenth resistor (R13), the other end of a twelfth resistor (R12), the other end of the twentieth resistor (R24), one end of the twenty-third resistor (R23), one end of a tenth capacitor (C10) and the other end of a thirteenth resistor (R13), The other end of the twelfth resistor (R12) is connected with a positive 250V power supply, and the other end of the ninth capacitor (C9) is connected with the other end of the twenty-third resistor (R23) and the other end of the tenth resistor (R10).
2. The bi-directional high voltage output linear amplification circuit of claim 1, wherein: and the power supply I and the power supply II are connected with a negative 15V power supply interface, and the power supply III and the power supply IV are connected with a positive 15V power supply interface.
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| US7268625B2 (en) * | 2004-09-15 | 2007-09-11 | Broadcom Corporation | Method and apparatus for a linear transconductance device |
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