CN110829990A - Small-signal electronic component - Google Patents
Small-signal electronic component Download PDFInfo
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- CN110829990A CN110829990A CN201911094380.9A CN201911094380A CN110829990A CN 110829990 A CN110829990 A CN 110829990A CN 201911094380 A CN201911094380 A CN 201911094380A CN 110829990 A CN110829990 A CN 110829990A
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- 239000003990 capacitor Substances 0.000 claims abstract description 45
- 230000003321 amplification Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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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
- H03F3/189—High frequency amplifiers, e.g. radio frequency amplifiers
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
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Abstract
The invention provides a small-signal electronic component which comprises resistors R1-R4, capacitors C1-C4, a potentiometer W1, a transformer T1, a transistor N1, an electrolytic capacitor E4, an interface end P1 and an interface end P3.
Description
Technical Field
The invention relates to an electronic component, in particular to a small-signal electronic component, and belongs to the technical field of electronic components.
Background
The development history of electronic components is actually a concentrated development history of electrons. The electronic technology is a new technology developed at the end of the nineteenth century and at the beginning of the twentieth century, is developed most rapidly in the twentieth century and is applied most widely, and becomes an important mark for the development of modern science and technology.
At present, electronic components only realize specific principle operation of functions in circuits, and do not have diversified functions.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a small-signal electronic component which can realize the functions of outputting a high-frequency small signal and coordinating an amplifier, and has the advantages of simple circuit structure and stable performance.
In order to achieve the purpose, the invention adopts the technical scheme that: a small-signal electronic component comprises resistors R1-R1, capacitors C1-C1, a potentiometer W1, a transformer T1, a transistor N1, an electrolytic capacitor E1, an interface terminal P1 and an interface terminal P1, wherein the anode of the electrolytic capacitor E1 is respectively connected with a sliding terminal of the potentiometer W1, a first fixed terminal of the potentiometer W1, one terminal of the resistor R1, one terminal of the capacitor C1 and a 2 pin of the transformer T1, the cathode of the electrolytic capacitor E1 is grounded, the other terminal of the resistor R1 is connected with a 12V power supply, the other terminal of the capacitor C1 is grounded, a second fixed terminal of the potentiometer W1 is connected with one terminal of the resistor R1, the base of the transistor N1 is respectively connected with the other terminal of the resistor R1, one terminal of the resistor R1 and one terminal of the capacitor C1, the other terminal of the capacitor C1 is connected with a 1 pin of the P1, the 2 pin and the interface terminal P1 of the transformer T1, and the other terminal of the collector of the capacitor T1 are respectively connected with the interface terminal T1, the 4 pin of the transformer T1 is connected with the 1 pin of the interface terminal P1, the 2 pin and the 3 pin of the interface terminal P1 are grounded, the 5 pin of the transformer T1 is grounded, the emitter of the transistor N1 is respectively connected with one end of the resistor R4 and one end of the capacitor C3, and the other end of the resistor R3, the other end of the resistor R4 and the other end of the capacitor C3 are grounded.
The transistor N1 is of the type MMBT 5551.
Transformer T1 is model 803TF 1.
The interface ports P1 and P3 are CON3 interfaces.
The invention has the advantages of simple circuit structure and stable performance, and can realize the functions of outputting high-frequency small signals and coordinating the amplifier.
Drawings
Fig. 1 is a schematic circuit diagram of the present invention.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in FIG. 1, a small-signal electronic component comprises resistors R1-R4, capacitors C1-C4, a potentiometer W1, a transformer T1, a transistor N1, an electrolytic capacitor E1, an interface terminal P1 and an interface terminal P1, wherein the anode of the electrolytic capacitor E1 is respectively connected with the sliding terminal of the potentiometer W1, the first fixed terminal of the potentiometer W1, one terminal of the resistor R1, one terminal of the capacitor C1 and the 2 pin of the transformer T1, the cathode of the electrolytic capacitor E1 is grounded, the other terminal of the resistor R1 is connected with a 12V power supply, the other terminal of the capacitor C1 is grounded, the second fixed terminal of the potentiometer W1 is connected with one terminal of the resistor R1, the base of the transistor N1 is respectively connected with the other terminal of the resistor R1, one terminal of the resistor R1 and one terminal of the capacitor C1, the other terminal of the capacitor C1 is connected with the 1 pin of the P1, the 2 pin of the interface terminal P1 and the interface pin of the N1, the collector of the transformer T1 are respectively connected, the other end of the capacitor C1 is connected to pin 3 of the transformer T1, pin 4 of the transformer T1 is connected to pin 1 of the interface P1, pins 2 and 3 of the interface P1 are grounded, pin 5 of the transformer T1 is grounded, the emitter of the transistor N1 is connected to one end of the resistor R4 and one end of the capacitor C3, and the other end of the resistor R3, the other end of the resistor R4, and the other end of the capacitor C3 are grounded.
The transistor N1 is of the type MMBT 5551.
Transformer T1 is model 803TF 1.
The interface ports P1 and P3 are CON3 interfaces.
The circuit is mainly used for linear amplification of high-frequency small signals or weak signals. Fig. 1 is a principle circuit of a single-tuned loop small-signal resonant amplifier, and an experimental unit circuit consists of a transistor N1 and a transformer T1, and not only amplifies a high-frequency small signal, but also has a frequency selection function. The potentiometer W1, the resistor R2, the resistor R3 and the resistor R4 are direct current bias resistors (the resistor R4 is connected with the capacitor C3 in parallel, so the resistor R4 only has direct current negative feedback function), and the adjusting potentiometer W1 can select a proper static working point for the amplifier. The capacitor C4 is a coupling capacitor for input signals, the electrolytic capacitor E4, the capacitor C3, the capacitor C2 are bypass filter capacitors, and the resistor R1 is a middle-cycle primary load. The capacitor C1 and the inductor L form a parallel resonant loop, and the loop can be resonated at the signal center frequency by adjusting the capacitor C1 or changing the position of the magnetic core of the transformer T1. The resonant frequency of single-tuned small-signal amplification in the circuit is fs-10.7 MHz. Therefore, a small signal with the frequency of 10.7 is coupled in from the capacitor C4, and after frequency selection and amplification, the middle secondary level can obtain the maximum output.
Claims (4)
1. A small-signal electronic component is characterized by comprising resistors R1-R4, capacitors C1-C4, a potentiometer W1, a transformer T1, a transistor N1, an electrolytic capacitor E1, an interface terminal P1 and an interface terminal P1, wherein the anode of the electrolytic capacitor E1 is respectively connected with the sliding terminal of the potentiometer W1, the first fixed terminal of the potentiometer W1, one terminal of the resistor R1, one terminal of the capacitor C1 and the 2 pin of the transformer T1, the cathode of the electrolytic capacitor E1 is grounded, the other terminal of the resistor R1 is connected with a 12V power supply, the other terminal of the capacitor C1 is grounded, the second fixed terminal of the potentiometer W1 is connected with one terminal of the resistor R1, the base of the transistor N1 is respectively connected with the other terminal of the resistor R1, one terminal of the resistor R1 and one terminal of the capacitor C1, the other terminal of the capacitor C1 is connected with the 1 pin of the P1, the 2 pin of the interface terminal P1 and the interface pin of the N1, the collector of the transistor T1 are respectively connected with the collector, the other end of the capacitor C1 is connected to pin 3 of the transformer T1, pin 4 of the transformer T1 is connected to pin 1 of the interface P1, pins 2 and 3 of the interface P1 are grounded, pin 5 of the transformer T1 is grounded, the emitter of the transistor N1 is connected to one end of the resistor R4 and one end of the capacitor C3, and the other end of the resistor R3, the other end of the resistor R4, and the other end of the capacitor C3 are grounded.
2. A small signal electronic component as claimed in claim 1, wherein the transistor N1 is of the type MMBT 5551.
3. A small signal electronic component as claimed in claim 1, wherein the transformer T1 is of type 803TF 1.
4. A small-signal electronic component as claimed in claim 1, wherein the interface terminals P1 and P3 are CON3 interfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911094380.9A CN110829990A (en) | 2019-11-11 | 2019-11-11 | Small-signal electronic component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911094380.9A CN110829990A (en) | 2019-11-11 | 2019-11-11 | Small-signal electronic component |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110829990A true CN110829990A (en) | 2020-02-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911094380.9A Pending CN110829990A (en) | 2019-11-11 | 2019-11-11 | Small-signal electronic component |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110829990A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1246571A (en) * | 1968-01-12 | 1971-09-15 | Ibm | Improvements in or relating to differential amplifiers |
| CN202696545U (en) * | 2012-07-30 | 2013-01-23 | 西安邮电大学 | Linear wideband high-frequency power amplifier |
| CN107067910A (en) * | 2017-04-18 | 2017-08-18 | 重庆工业职业技术学院 | Electronic circuits degisn system based on cloud service |
-
2019
- 2019-11-11 CN CN201911094380.9A patent/CN110829990A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1246571A (en) * | 1968-01-12 | 1971-09-15 | Ibm | Improvements in or relating to differential amplifiers |
| CN202696545U (en) * | 2012-07-30 | 2013-01-23 | 西安邮电大学 | Linear wideband high-frequency power amplifier |
| CN107067910A (en) * | 2017-04-18 | 2017-08-18 | 重庆工业职业技术学院 | Electronic circuits degisn system based on cloud service |
Non-Patent Citations (1)
| Title |
|---|
| 康华光 * |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200221 |
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| WD01 | Invention patent application deemed withdrawn after publication |