CN103457578A - Feedback type signal generation circuit - Google Patents
Feedback type signal generation circuit Download PDFInfo
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- CN103457578A CN103457578A CN2013104077169A CN201310407716A CN103457578A CN 103457578 A CN103457578 A CN 103457578A CN 2013104077169 A CN2013104077169 A CN 2013104077169A CN 201310407716 A CN201310407716 A CN 201310407716A CN 103457578 A CN103457578 A CN 103457578A
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- electric capacity
- generation circuit
- signal generation
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- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 title abstract description 6
- 238000006757 chemical reactions by type Methods 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 abstract description 6
- 230000005284 excitation Effects 0.000 abstract 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
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Abstract
The invention discloses a feedback type signal generation circuit. The feedback type signal generation circuit comprises a capacitor, a reactor, a transformer and a triode. Phase balance and amplitude balance conditions are met through positive feedback, and self excitation is formed to generate signals; through the capacitor and an inductor, output signals of the feedback type signal generation circuit are stable, clutter components are small, and the feedback type signal generation circuit is suitable for being applied to small electronic systems.
Description
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Technical field
The present invention relates to a kind of signal generating circuit, particularly a kind of reaction type signal generating circuit.
Background technology
In the engineering application, for example, in the low frequency and high-frequency signal generation circuit of experiment use, often require signal generator can produce the frequency of oscillation of certain stability, the signal purer with output, and often filter can't filter out all useless signals or the part useful signal is filtered, to successive projects, application causes certain interference, affects the experimental data accuracy.
Therefore need a kind of new technical scheme to solve the problems referred to above.
Summary of the invention
Goal of the invention: the problem and shortage existed for above-mentioned prior art the purpose of this invention is to provide a kind of reaction type signal generating circuit, stable performance.
Technical scheme: the technical solution used in the present invention is a kind of reaction type signal generating circuit, comprise electric capacity, resistance, transformer and triode, the base stage of triode is connected with the different name end of the primary coil of transformer by the first electric capacity, the Same Name of Ends of primary coil is by the second grounding through resistance, the other end of the second resistance is connected with an end of the 3rd resistance, the other end access positive voltage of the 3rd resistance, the emitter of triode is by the first grounding through resistance, its collector electrode is connected with the Same Name of Ends of the secondary coil of transformer, and by the second capacity earth, the different name termination positive voltage of secondary coil.
Preferably, also comprise the 3rd electric capacity, a termination positive voltage of the 3rd electric capacity, its other end ground connection.
Preferably, also comprise the first inductance and the 4th resistance, an end of this first inductance is connected with the collector electrode of triode, and its other end is by the 4th grounding through resistance.
Preferably, also comprise the 4th electric capacity, the 4th Capacitance parallel connection is at the secondary coil two ends of transformer.
Beneficial effect: compared with prior art, its advantage is that the present invention adopts positive feedback to meet phase equilibrium and amplitude balance condition in the present invention, forms self-excitation to produce signal, by electric capacity and inductance, its stable output signal, clutter component is few, is applicable in the miniature electric system applies.
The accompanying drawing explanation
Fig. 1 is circuit diagram of the present invention.
Embodiment
As shown in Figure 1, the present invention includes electric capacity, resistance, transformer and triode, the base stage of triode Q1 is connected with the different name end of the primary coil of transformer by the first capacitor C 1, the Same Name of Ends of primary coil is by the second resistance R 2 ground connection, the other end of the second resistance R 2 is connected with an end of the 3rd resistance R 3, the other end access positive voltage of the 3rd resistance R 3, the emitter of triode Q1 is by the first resistance R 1 ground connection, its collector electrode is connected with the Same Name of Ends of the secondary coil of transformer, and by the second capacitor C 2 ground connection, the different name termination positive voltage of secondary coil, one termination positive voltage of the 3rd capacitor C 3, its other end ground connection, one end of the first inductance L 1 is connected with the collector electrode of triode Q1, its other end is by the 4th resistance R 4 ground connection, the 4th capacitor C 4 is connected in parallel on the secondary coil two ends of transformer.
The present invention adopts positive feedback to meet phase equilibrium and amplitude balance condition, forms self-excitation to produce signal, by electric capacity and inductance, and its stable output signal, clutter component is few, is applicable in the miniature electric system applies.
Claims (4)
1. reaction type signal generating circuit, it is characterized in that: comprise electric capacity, resistance, transformer and triode, the base stage of described triode (Q1) is connected with the different name end of the primary coil of transformer by the first electric capacity (C1), the Same Name of Ends of described primary coil is by the second resistance (R2) ground connection, the other end of described the second resistance (R2) is connected with an end of the 3rd resistance (R3), the other end access positive voltage of the 3rd resistance (R3), the emitter of described triode (Q1) is by the first resistance (R1) ground connection, its collector electrode is connected with the Same Name of Ends of the secondary coil of transformer, and by the second electric capacity (C2) ground connection, the different name termination positive voltage of described secondary coil.
2. reaction type signal generating circuit according to claim 1, is characterized in that: also comprise the 3rd electric capacity (C3), a termination positive voltage of described the 3rd electric capacity (C3), its other end ground connection.
3. reaction type signal generating circuit according to claim 1, it is characterized in that: also comprise the first inductance (L1) and the 4th resistance (R4), one end of described the first inductance (L1) is connected with the collector electrode of triode (Q1), and its other end is by the 4th resistance (R4) ground connection.
4. a kind of reaction type signal generating circuit according to claim 1, it is characterized in that: also comprise the 4th electric capacity (C4), described the 4th electric capacity (C4) is connected in parallel on the secondary coil two ends of transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104077169A CN103457578A (en) | 2013-09-10 | 2013-09-10 | Feedback type signal generation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104077169A CN103457578A (en) | 2013-09-10 | 2013-09-10 | Feedback type signal generation circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103457578A true CN103457578A (en) | 2013-12-18 |
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ID=49739618
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104077169A Pending CN103457578A (en) | 2013-09-10 | 2013-09-10 | Feedback type signal generation circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103457578A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB801602A (en) * | 1956-02-09 | 1958-09-17 | Philco Corp | Improvements in and relating to electrical systems |
| US3187271A (en) * | 1960-06-03 | 1965-06-01 | Philips Corp | Relaxation oscillator with timing capacitor charge path isolated from transistor leakage current |
| SU1725365A1 (en) * | 1989-12-08 | 1992-04-07 | Научно-Исследовательский Институт Автоматики И Электромеханики При Томском Институте Автоматизированных Систем Управления И Радиоэлектроники | Blocking oscillator |
| CN101883469A (en) * | 2010-03-15 | 2010-11-10 | 中国原子能科学研究院 | Method and device for eliminating amplitude-phase control crosstalk in self-excited mode |
-
2013
- 2013-09-10 CN CN2013104077169A patent/CN103457578A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB801602A (en) * | 1956-02-09 | 1958-09-17 | Philco Corp | Improvements in and relating to electrical systems |
| US3187271A (en) * | 1960-06-03 | 1965-06-01 | Philips Corp | Relaxation oscillator with timing capacitor charge path isolated from transistor leakage current |
| SU1725365A1 (en) * | 1989-12-08 | 1992-04-07 | Научно-Исследовательский Институт Автоматики И Электромеханики При Томском Институте Автоматизированных Систем Управления И Радиоэлектроники | Blocking oscillator |
| CN101883469A (en) * | 2010-03-15 | 2010-11-10 | 中国原子能科学研究院 | Method and device for eliminating amplitude-phase control crosstalk in self-excited mode |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131218 |