CN103475312A - Signal source circuit - Google Patents
Signal source circuit Download PDFInfo
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- CN103475312A CN103475312A CN2013104077099A CN201310407709A CN103475312A CN 103475312 A CN103475312 A CN 103475312A CN 2013104077099 A CN2013104077099 A CN 2013104077099A CN 201310407709 A CN201310407709 A CN 201310407709A CN 103475312 A CN103475312 A CN 103475312A
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- resistance
- field effect
- electric capacity
- triode
- signal source
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Abstract
The invention discloses a signal source circuit which comprises a triode, a field-effect tube, a resistor and a capacitor. The signal source circuit is simple in structure, signals are output stably, the number of clutter is small, and noise is low. The signal source circuit is suitable for being used in a low-power electronic system.
Description
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Technical field
The present invention relates to a kind of signal source circuit, particularly a kind of generation sine wave signal source circuit.
Background technology
Signal source circuit is the core unit circuit of analog integrated circuit; especially in power management class chip; signal source has often determined the performance index of this type of chip, and it is widely used in the various simulations such as oscillator, phase-locked loop and data converter and hybrid digital-analog integrated circuit.But its circuit complexity, power consumption is large, is not easy to the low-power system application.
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 signal source circuit, its signal produces stable, and noise is low.
Technical scheme: a kind of signal source circuit of the present invention, this circuit comprises triode, field effect transistor, resistance and electric capacity, the base stage of the first triode is connected with the drain electrode of the first field effect transistor, the drain electrode of the first field effect transistor is by the second resistance access positive voltage, the collector electrode of the first triode is by the first resistance access positive voltage, the emitter of the first triode is connected with the drain electrode of the second field effect, the grid of the second field effect is by the series connection ground connection of the 3rd resistance and the 5th resistance, the source electrode of the first field effect transistor is by the 5th grounding through resistance, the grid of the first field effect transistor is by the series connection ground connection of the 7th resistance and the 6th resistance.
Preferably, the collector electrode of the first triode is by the 5th electric capacity, the second electric capacity, the 4th resistance, the 5th grounding through resistance.
Preferably, an end of the 6th resistance is connected with an end of the 4th electric capacity, and the other end of the 4th electric capacity is connected with an end of the 8th resistance, and the other end of the 8th resistance is connected with the 5th electric capacity.
Preferably, the two ends of the 6th resistance are parallel with the 3rd electric capacity.
Beneficial effect: compared with prior art, its advantage is that circuit structure of the present invention is simple in the present invention, stable output signal, and clutter is few,, noise is low, is applicable in the small power electric subsystem.
The accompanying drawing explanation
Fig. 1 is circuit diagram of the present invention.
Embodiment
As shown in Figure 1, circuit triode of the present invention, field effect transistor, resistance and electric capacity, the base stage of the first triode Q1 is connected with the drain electrode of the first field effect transistor Q2, the drain electrode of the first field effect transistor Q2 is by the second resistance R 2 access positive voltages, the collector electrode of the first triode Q1 is by the first resistance R 1 access positive voltage, the emitter of the first triode Q1 is connected with the drain electrode of the second field effect Q3, the grid of the second field effect Q3 is by the series connection ground connection of the 3rd resistance R 3 and the 5th resistance R 5, the source electrode of the first field effect transistor Q2 is by the 5th resistance R 5 ground connection, the grid of the first field effect transistor Q2 is by the series connection ground connection of the 7th resistance R 7 and the 6th resistance R 6.
The collector electrode of the first triode Q1 is by the 5th capacitor C 5, the second capacitor C 2, the 4th resistance R 4, the 5th resistance R 5 ground connection, one end of the 6th resistance R 6 is connected with an end of the 4th capacitor C 4, the other end of the 4th capacitor C 4 is connected with an end of the 8th resistance R 8, the other end of the 8th resistance R 8 is connected with the 5th capacitor C 5, the other end that the two ends of the 6th resistance R 6 are parallel with the 3rd capacitor C 3, the eight resistance R 8 is output of the present invention.
Circuit structure of the present invention is simple, stable output signal, and clutter is few,, noise is low, is applicable in the small power electric subsystem.
Claims (4)
1. a signal source circuit, it is characterized in that: comprise triode, field effect transistor, resistance and electric capacity, the base stage of described the first triode (Q1) is connected with the drain electrode of the first field effect transistor (Q2), the drain electrode of described the first field effect transistor (Q2) is by the second resistance (R2) access positive voltage, the collector electrode of described the first triode (Q1) is by the first resistance (R1) access positive voltage, the emitter of the first triode (Q1) is connected with the drain electrode of the second field effect (Q3), the grid of described the second field effect (Q3) is by the series connection ground connection of the 3rd resistance (R3) and the 5th resistance (R5), the source electrode of the first field effect transistor (Q2) is by the 5th resistance (R5) ground connection, the grid of described the first field effect transistor (Q2) is by the series connection ground connection of the 7th resistance (R7) and the 6th resistance (R6).
2. a kind of signal source circuit according to claim 1 is characterized in that: the collector electrode of described the first triode (Q1) is by the 5th electric capacity (C5), the second electric capacity (C2), the 4th resistance (R4), the 5th resistance (R5) ground connection.
3. a kind of voltage source circuit according to claim 1, it is characterized in that: an end of described the 6th resistance (R6) is connected with an end of the 4th electric capacity (C4), the other end of the 4th electric capacity (C4) is connected with an end of the 8th resistance (R8), and the other end of described the 8th resistance (R8) is connected with the 5th electric capacity (C5).
4. according to claim 1 or 3 described a kind of voltage source circuits, it is characterized in that: the two ends of described the 6th resistance (R6) are parallel with the 3rd electric capacity (C3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104077099A CN103475312A (en) | 2013-09-10 | 2013-09-10 | Signal source circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104077099A CN103475312A (en) | 2013-09-10 | 2013-09-10 | Signal source circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103475312A true CN103475312A (en) | 2013-12-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104077099A Pending CN103475312A (en) | 2013-09-10 | 2013-09-10 | Signal source circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103475312A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070229153A1 (en) * | 2004-08-02 | 2007-10-04 | Yan Yuejun | Fet Bias Circuit |
| CN201489647U (en) * | 2009-08-31 | 2010-05-26 | 李艳军 | TV remote control device |
| CN101826862A (en) * | 2009-03-06 | 2010-09-08 | 中兴通讯股份有限公司 | Method for reducing power supply power consumption, zero-current self-lock switch and power supply device |
-
2013
- 2013-09-10 CN CN2013104077099A patent/CN103475312A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070229153A1 (en) * | 2004-08-02 | 2007-10-04 | Yan Yuejun | Fet Bias Circuit |
| CN101826862A (en) * | 2009-03-06 | 2010-09-08 | 中兴通讯股份有限公司 | Method for reducing power supply power consumption, zero-current self-lock switch and power supply device |
| CN201489647U (en) * | 2009-08-31 | 2010-05-26 | 李艳军 | TV remote control device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20131225 |