CN103475340A - Signal generating circuit - Google Patents
Signal generating circuit Download PDFInfo
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- CN103475340A CN103475340A CN2013104082754A CN201310408275A CN103475340A CN 103475340 A CN103475340 A CN 103475340A CN 2013104082754 A CN2013104082754 A CN 2013104082754A CN 201310408275 A CN201310408275 A CN 201310408275A CN 103475340 A CN103475340 A CN 103475340A
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- resistance
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- diode
- signal generating
- generating circuit
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Abstract
The invention discloses a signal generating circuit which comprises an operational amplifier, a voltage-regulator tube, a resistor, a diode and a capacitor. The signal generating circuit is simple in structure, stable in signal generating waveform, capable of regulating the waveform output amplitude through the variable resistor, wide in application range, small in temperature coefficient and good in temperature stability, has few noise waves and is suitable for small-size electronic systems.
Description
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Technical field
The present invention relates to a kind of signal source, particularly a kind of signal generating circuit.
Background technology
Signal source 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, unsteadiness is strong, and clutter component is too many, affects the entire system operation.
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 generating circuit, produce signal stabilization, clutter is few.
Technical scheme: the technical solution used in the present invention is a kind of signal generating circuit, this circuit comprises amplifier, voltage-stabiliser tube, resistance, diode and electric capacity, the inverting input of the first amplifier is by the 4th grounding through resistance, its output is connected with variable-resistance adjustable side, a variable-resistance end is connected with the normal phase input end of the first amplifier by the second resistance, a variable-resistance end is by voltage-stabiliser tube ground connection, and be connected with the normal phase input end of the second amplifier by the 6th resistance, the inverting input of the second amplifier is by the 7th grounding through resistance, its output is connected with its normal phase input end by the first electric capacity.
Preferably, an end of the 6th resistance is connected with an end of the 5th resistance, and the other end of the 5th resistance is connected with the positive pole of the first diode, and the negative pole of the first diode is connected with the other end of the 6th resistance, and is connected with the normal phase input end of the second amplifier.
Preferably, an end of the 6th resistance is connected with an end of the 5th resistance, and the other end of the 5th resistance is connected with the positive pole of the first diode, and the negative pole of the first diode is connected with the other end of the 6th resistance, and is connected with the normal phase input end of the second amplifier.
Preferably, the output of the second amplifier is connected with the positive pole of the 3rd diode, and the negative pole of the 3rd diode is connected with the negative pole of the second diode, and the positive pole of this second diode is connected with the normal phase input end of the first amplifier by the first resistance
Beneficial effect: compared with prior art, its advantage is that circuit structure of the present invention is simple in the present invention, and signal produces waveform stabilization, can regulate the output waveform amplitude by variable resistor, applied range, and temperature coefficient is little, temperature stability is good, and clutter is less, is applicable in the miniature electric system.
The accompanying drawing explanation
Fig. 1 is circuit diagram of the present invention.
Embodiment
As shown in Figure 1, circuit of the present invention comprises amplifier, voltage-stabiliser tube, resistance, diode and electric capacity, the inverting input of the first amplifier U1 is by the 4th resistance R 4 ground connection, its output is connected with the adjustable side of variable resistor R3, the end of variable resistor R3 is connected with the normal phase input end of the first amplifier U1 by the second resistance R 2, the end of variable resistor R3 is by voltage-stabiliser tube ground connection, and be connected with the normal phase input end of the second amplifier U2 by the 6th resistance R 6, the inverting input of the second amplifier U2 is by the 7th resistance R 7 ground connection, its output is connected with its normal phase input end by the first capacitor C 1.
One end of the 6th resistance R 6 is connected with an end of the 5th resistance R 5, and the other end of the 5th resistance R 5 is connected with the positive pole of the first diode D1, and the negative pole of the first diode D1 is connected with the other end of the 6th resistance, and is connected with the normal phase input end of the second amplifier U2; The output of the second amplifier U2 is connected with the positive pole of the 3rd diode D3, and the negative pole of the 3rd diode D3 is connected with the negative pole of the second diode D2, and the positive pole of this second diode D2 is connected with the normal phase input end of the first amplifier U1 by the first resistance R 1.
Circuit structure of the present invention is simple, and signal produces waveform stabilization, by variable resistor, can regulate the output waveform amplitude, applied range, and temperature coefficient is little, and temperature stability is good, and clutter is less, is applicable in the miniature electric system.
Claims (3)
1. signal generating circuit, it is characterized in that: comprise amplifier, voltage-stabiliser tube, resistance, diode and electric capacity, the inverting input of described the first amplifier (U1) is by the 4th resistance (R4) ground connection, its output is connected with the adjustable side of variable resistor (R3), one end of described variable resistor (R3) is connected with the normal phase input end of the first amplifier (U1) by the second resistance (R2), one end of described variable resistor (R3) is by voltage-stabiliser tube ground connection, and be connected with the normal phase input end of the second amplifier (U2) by the 6th resistance (R6), the inverting input of described the second amplifier (U2) is by the 7th resistance (R7) ground connection, its output is connected with its normal phase input end by the first electric capacity (C1).
2. signal generating 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 5th resistance (R5), the other end of described the 5th resistance (R5) is connected with the positive pole of the first diode (D1), the negative pole of described the first diode (D1) is connected with the other end of the 6th resistance, and is connected with the normal phase input end of the second amplifier (U2).
3. signal generating circuit according to claim 1, it is characterized in that: the output of described the second amplifier (U2) is connected with the positive pole of the 3rd diode (D3), the negative pole of described the 3rd diode (D3) is connected with the negative pole of the second diode (D2), and the positive pole of this second diode (D2) is connected with the normal phase input end of the first amplifier (U1) by the first resistance (R1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104082754A CN103475340A (en) | 2013-09-10 | 2013-09-10 | Signal generating circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104082754A CN103475340A (en) | 2013-09-10 | 2013-09-10 | Signal generating circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103475340A true CN103475340A (en) | 2013-12-25 |
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ID=49800069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104082754A Pending CN103475340A (en) | 2013-09-10 | 2013-09-10 | Signal generating circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103475340A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7046053B2 (en) * | 2004-02-27 | 2006-05-16 | The Boeing Company | Total harmonic distortion standard |
| CN101867366A (en) * | 2010-07-02 | 2010-10-20 | 北京联合大学生物化学工程学院 | Triangular wave generator with variable frequency and amplitude |
| CN102427347A (en) * | 2011-09-30 | 2012-04-25 | 中国兵器工业集团第二一四研究所苏州研发中心 | Truncated triangular wave generating circuit |
| CN102436772A (en) * | 2011-09-07 | 2012-05-02 | 北京联合大学 | Voltage-frequency converter controlled by single chip computer and experimental box provided with module |
-
2013
- 2013-09-10 CN CN2013104082754A patent/CN103475340A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7046053B2 (en) * | 2004-02-27 | 2006-05-16 | The Boeing Company | Total harmonic distortion standard |
| CN101867366A (en) * | 2010-07-02 | 2010-10-20 | 北京联合大学生物化学工程学院 | Triangular wave generator with variable frequency and amplitude |
| CN102436772A (en) * | 2011-09-07 | 2012-05-02 | 北京联合大学 | Voltage-frequency converter controlled by single chip computer and experimental box provided with module |
| CN102427347A (en) * | 2011-09-30 | 2012-04-25 | 中国兵器工业集团第二一四研究所苏州研发中心 | Truncated triangular wave generating circuit |
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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: 20131225 |