CN103475313A - Signal source circuit - Google Patents
Signal source circuit Download PDFInfo
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- CN103475313A CN103475313A CN2013104113038A CN201310411303A CN103475313A CN 103475313 A CN103475313 A CN 103475313A CN 2013104113038 A CN2013104113038 A CN 2013104113038A CN 201310411303 A CN201310411303 A CN 201310411303A CN 103475313 A CN103475313 A CN 103475313A
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- resistance
- triode
- signal source
- inductance
- source circuit
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Abstract
The invention discloses a signal source circuit. The signal source circuit comprises a resistor, a capacitor, a diode, an inductor and an audion, wherein one end of the capacitor in a parallel-connection resonant circuit is connected to the diode, the resonant circuit is good in oscillation starting effect, the range of input signals is regulated and output voltage signals are controlled by regulating two slide rheostats, and controllability is strong. The signal source circuit is simple in structure, low in cost, strong in stability, and suitable for small laboratories.
Description
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Technical field
The present invention relates to a kind of measuring circuit, particularly a kind of 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 cost is low, waveform stabilization output.
Technical scheme: the technical solution adopted in the present invention is a kind of signal source circuit, comprise resistance, electric capacity, diode, inductance and triode, the first inductance and the 5th inductance form shunt-resonant circuit, the second slide rheostat, the 6th resistance and the 7th resistance are in series, positive voltage is inputed to shunt-resonant circuit, the base stage of triode is by the first resistance and the first slide rheostat access positive voltage, the base stage of triode is by the first capacity earth, the emitter of triode is by the 4th grounding through resistance, the collector electrode of triode is by the 5th resistance access positive voltage, the collector electrode of triode and the 6th capacitances in series form output, the collector electrode of triode is by the emitter of the 3rd electric capacity and triode, one end of the first inductance is connected with the collector electrode of triode by the 4th electric capacity, its other end ground connection, and the 5th inductance is by the ground connection that is connected of the negative pole with diode (D1).
Preferably, the two ends of the first electric capacity are parallel with the second resistance.
Preferably, the 4th resistance two ends are parallel with the second inductance.
Preferably, an end of the 6th resistance is by the 8th grounding through resistance.
Beneficial effect: the present invention compared with prior art, its advantage is that in shunt-resonant circuit, a termination of electric capacity enters diode, the resonant tank starting of oscillation is effective, by regulating two slide rheostats, regulates the amplitude of input signal, with the control output voltage signal, controllability is strong, and circuit structure of the present invention is simple, and cost is low, stability is strong, is applicable to small-size laboratory.
The accompanying drawing explanation
Fig. 1 is circuit diagram of the present invention.
Embodiment
As shown in Figure 1, the present invention includes resistance, electric capacity, diode, inductance and triode, the first inductance L 1 and the 5th inductance C5 form shunt-resonant circuit, the second slide rheostat R9, the 6th resistance R 6 and the 7th resistance R 7 are in series, positive voltage VCC is inputed to shunt-resonant circuit, the base stage of triode Q1 is by the first resistance R 1 and the first slide rheostat R3 access positive voltage VCC, the base stage of triode Q1 is by the first capacitor C 1 ground connection, the two ends of the first capacitor C 1 are parallel with the second resistance R 2, the emitter of triode Q1 is by the 4th resistance R 4 ground connection, the 4th resistance R 4 two ends are parallel with the second inductance C2, the collector electrode of triode Q1 is by the 5th resistance R 5 access positive voltages, the collector electrode of triode Q1 and the 6th capacitor C 6 output in series, the collector electrode of triode Q1 is the emitter with triode Q1 by the 3rd capacitor C 3, one end of the first inductance L 1 is connected with the collector electrode of triode Q1 by the 4th capacitor C 4, its other end ground connection, and the 5th inductance C5 is by the ground connection that is connected of the negative pole with diode D1, and an end of the 6th resistance R 6 passes through the 8th resistance R 8 ground connection.
Regulate input voltage by regulating the second slide rheostat R9, make the shunt-resonant circuit starting of oscillation, the sine wave signal of its generation, by the amplification of triode, through the 6th capacitor filtering, obtains stable sine wave source.
The present invention enters diode by a termination of electric capacity in shunt-resonant circuit, the resonant tank starting of oscillation is effective, by regulating two slide rheostats, regulate the amplitude of input signal, and control output voltage signal, controllability is strong, circuit structure of the present invention is simple, cost is low, and stability is strong, is applicable to small-size laboratory.
Claims (4)
1. a signal source circuit, it is characterized in that: comprise resistance, electric capacity, diode, inductance and triode, the first inductance (L1) and the 5th inductance (C5) form shunt-resonant circuit, the second slide rheostat (R9), the 6th resistance (R6) and the 7th resistance (R7) are in series, positive voltage (VCC) is inputed to shunt-resonant circuit, the base stage of described triode (Q1) is by the first resistance (R1) and the first slide rheostat (R3) access positive voltage (VCC), the base stage of triode (Q1) is by the first electric capacity (C1) ground connection, the emitter of triode (Q1) is by the 4th resistance (R4) ground connection, the collector electrode of triode (Q1) is by the 5th resistance (R5) access positive voltage, the collector electrode of triode (Q1) and the 6th electric capacity (C6) output in series, the collector electrode of described triode (Q1) is the emitter with triode (Q1) by the 3rd electric capacity (C3), one end of described the first inductance (L1) is connected with the collector electrode of triode (Q1) by the 4th electric capacity (C4), its other end ground connection, and described the 5th inductance (C5) is by the ground connection that is connected of the negative pole with diode (D1).
2. a kind of signal source circuit according to claim 1, it is characterized in that: the two ends of described the first electric capacity (C1) are parallel with the second resistance (R2).
3. a kind of signal source circuit according to claim 1, it is characterized in that: described the 4th resistance (R4) two ends are parallel with the second inductance (C2).
4. a kind of signal source circuit according to claim 1 is characterized in that: an end of described the 6th resistance (R6) is by the 8th resistance (R8) ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104113038A CN103475313A (en) | 2013-09-11 | 2013-09-11 | Signal source circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104113038A CN103475313A (en) | 2013-09-11 | 2013-09-11 | Signal source circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103475313A true CN103475313A (en) | 2013-12-25 |
Family
ID=49800045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104113038A Pending CN103475313A (en) | 2013-09-11 | 2013-09-11 | Signal source circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103475313A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1370345A (en) * | 2000-05-10 | 2002-09-18 | 索尼公司 | Resonant switching power supply circuit with voltage double output |
| US20100327773A1 (en) * | 2009-06-30 | 2010-12-30 | Wei Gu | Method and system for dimming an offline led driver |
-
2013
- 2013-09-11 CN CN2013104113038A patent/CN103475313A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1370345A (en) * | 2000-05-10 | 2002-09-18 | 索尼公司 | Resonant switching power supply circuit with voltage double output |
| US20100327773A1 (en) * | 2009-06-30 | 2010-12-30 | Wei Gu | Method and system for dimming an offline led driver |
Non-Patent Citations (1)
| Title |
|---|
| 高吉祥: "《模拟电子线路设计》", 31 July 2013, 高等教育出版社 * |
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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 |