CN106169912A - Pulse wave generation circuit - Google Patents
Pulse wave generation circuit Download PDFInfo
- Publication number
- CN106169912A CN106169912A CN201610518503.7A CN201610518503A CN106169912A CN 106169912 A CN106169912 A CN 106169912A CN 201610518503 A CN201610518503 A CN 201610518503A CN 106169912 A CN106169912 A CN 106169912A
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- China
- Prior art keywords
- circuit
- resistance
- amplifier
- output
- audion
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/20—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator
- H03B5/24—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator active element in amplifier being semiconductor device
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Abstract
The invention discloses a kind of pulse wave generation circuit, be mainly made up of DA circuit, filter circuit, discharge circuit, metal-oxide-semiconductor circuit.By regulating D/A output voltage, being filtered by filter circuit, then amplify and metal-oxide-semiconductor constant current through amplifier after DA output, the output waveform obtained controls output pulse width and cycle by clock circuit, thus obtains final impulse output circuit.Circuit DA uses high accuracy chip, additional metal-oxide-semiconductor circuit, and circuit is simple, and reliability is high, and filter circuit uses capacitance-resistance filter mode, and during metal-oxide-semiconductor work, quiescent current is minimum, the traditional transistor circuit of ratio, has less quiescent current, and conducting speed is faster.This circuit is high to temperature stability, and current loss is little, and precision is high, can bear the advantages such as broader input voltage range.Improving DA precision makes circuit output current stepping thinner, and output electric current is more steady, and circuit works long hours reliable and stable.
Description
Technical field
The present invention relates to electricity field, particularly relate to a kind of pulse wave generation circuit.
Background technology
For traditional pulse wave generation circuit, the DA output accuracy used due to system is low, causes whole pulse generation
The shortcomings such as circuit precision is low, and the Ic current vs. temperature of audion is sensitive.The precision of the pulse generator DA precision to whole product
Impact is very big, the present invention is directed to disadvantages mentioned above, has invented a kind of Novel pulse wave generation circuit, uses high accuracy DA, additional
Metal-oxide-semiconductor circuit, circuit is simple, and reliability is high, and high to temperature stability, and current loss is little, and circuit can bear broader defeated
Enter the advantages such as voltage range.Improving DA precision makes circuit output current stepping thinner, and output electric current is more stable.Metal-oxide-semiconductor has work
Make electric current extremely low, the advantages such as Ron conducting resistance is little, and in-fighting is little.Use metal-oxide-semiconductor to drive and make whole pulse-generator circuit power consumption more
Low, the advantages such as caloric value is little.
Summary of the invention
Present invention aims to the deficiencies in the prior art, it is provided that a kind of pulse wave generation circuit.
It is an object of the invention to be achieved through the following technical solutions: a kind of pulse wave generation circuit, described generation circuit
Including DA numeral turn analog circuit, resistance R0, electric capacity C3, amplifier, resistance R1, resistance R3, electric capacity C1, PMOS, resistance R80,
Resistance Rs, output transformator T1, audion Q1, audion Q2, resistance R8, resistance R9, clock pins 1 and clock pins 2.Described
One end of outfan and R0 that DA numeral turns analog circuit is connected, and the other end of R0 is connected with the positive input terminal of amplifier, electric capacity C3
One end ground connection, the other end is connected with the positive input terminal of amplifier；The power pin of amplifier is connected with 9v power supply, the ground pin of amplifier
Ground connection, one end of electric capacity C1 is connected with the outfan of amplifier, and the other end is connected with the negative input end of amplifier；The outfan of amplifier with
One end of resistance R1 is connected, and the other end of resistance R1 connects the G pole of PMOS, after the d pole of PMOS connects resistance R80, with 9v
Power supply is connected；After the s pole of PMOS connects resistance Rs, it is connected with the centre cap of output transformator T1；Resistance R3 one end and fortune
The negative input end put is connected, and the other end is extremely connected with the s of PMOS；Output transformator T1 two inputs respectively with audion Q1
Colelctor electrode, audion Q2 colelctor electrode be connected；The emitter stage of audion Q1, the equal ground connection of emitter stage of audion Q2；Audion
After the base stage of Q1 is connected with resistance R8, it is connected with clock pins 1, after the base stage of audion Q2 is connected with resistance R9, draws with clock
Foot 2 is connected.
The beneficial effects of the present invention is: it is defeated that this high-precision constant flow source circuit can realize 0-4V Control of Voltage 0-50mA electric current
Go out, drive as constant-current source output using operational amplifier, in conjunction with the low impedance characteristic of metal-oxide-semiconductor, be particularly suitable for constant-current source output
In circuit, and whole system activated amplifier is as driving, and the temperature that works long hours is waftd little, and output is stable, battery life is longer.
Make the circuit stability exported of audion high than traditional, and precision is high.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the present invention.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings.
As it is shown in figure 1, one pulse wave generation circuit of the present invention, turn analog circuit, resistance R0, electric capacity including DA numeral
C3, amplifier, resistance R1, resistance R3, electric capacity C1, PMOS, resistance R80, resistance Rs, output transformator T1, audion Q1, three poles
Pipe Q2, resistance R8, resistance R9, clock pins 1 and clock pins 2.
DA numeral in the present invention turns analog circuit can use the products such as ti, maxim, and amplifier can use OPA211；
Resistance R0 is generally 1k～3k；Resistance R1 is generally 33～100ohm, and resistance R3 is generally 10～20k, resistance R8 and resistance R9
Generally 1k～3k, resistance Rs are generally 80～100ohm, resistance R80 is generally 80ohm；Electric capacity C1 is generally 270pf, electric capacity
C3 is generally 0.1uf；The turn ratio of output transformator T1 is 1:100～120.
One end of outfan and R0 that DA numeral turns analog circuit is connected, the positive input terminal phase of the other end of R0 and amplifier
Even, one end ground connection of electric capacity C3, the other end is connected with the positive input terminal of amplifier；The power pin of amplifier is connected with 9v power supply, fortune
The ground pin ground connection put, one end of electric capacity C1 is connected with the outfan of amplifier, and the other end is connected with the negative input end of amplifier；Amplifier
Outfan be connected with one end of resistance R1, the other end of resistance R1 connects the G pole of PMOS, and the d pole of PMOS connects resistance
After R80, it is connected with 9v power supply；After the s pole of PMOS connects resistance Rs, it is connected with the centre cap of output transformator T1；Resistance
R3 one end is connected with the negative input end of amplifier, and the other end is extremely connected with the s of PMOS；Two inputs of output transformator T1 are respectively
It is connected with colelctor electrode, the colelctor electrode of audion Q2 of audion Q1；The emitter stage of audion Q1, the emitter stage of audion Q2 all connect
Ground；After the base stage of audion Q1 is connected with resistance R8, it is connected with clock pins 1, after the base stage of audion Q2 is connected with resistance R9,
It is connected with clock pins 2.
After system electrification, input signal, after DA numeral revolving die intends circuit conversion, forms analogue signal, and analogue signal is passed through
After the filter circuit filtering of resistance R0 and electric capacity C3 composition, amplify through amplifier, formed and amplify signal；Through PMOS output perseverance
Stream source, is input to export transformator T1, meanwhile, connects clock pins 1 and clock pins 2 by extraneous single-chip microcomputer, to output
The output sequence of transformator T1 regulates and controls, thus obtains the waveform of high accuracy and high stability.
Claims (1)
1. a pulse wave generation circuit, it is characterised in that described generation circuit include DA numeral turn analog circuit, resistance R0,
Electric capacity C3, amplifier, resistance R1, resistance R3, electric capacity C1, PMOS, resistance R80, resistance Rs, output transformator T1, audion Q1,
Audion Q2, resistance R8, resistance R9, clock pins 1 and clock pins 2.Described DA numeral turns outfan and the R0 of analog circuit
One end be connected, the other end of R0 is connected with the positive input terminal of amplifier, one end ground connection of electric capacity C3, and the other end is the most defeated with amplifier
Enter end to be connected；The power pin of amplifier is connected with 9v power supply, the ground pin ground connection of amplifier, one end of electric capacity C1 and the output of amplifier
End is connected, and the other end is connected with the negative input end of amplifier；The outfan of amplifier is connected with one end of resistance R1, another of resistance R1
End connects the G pole of PMOS, after the d pole of PMOS connects resistance R80, is connected with 9v power supply；The s pole of PMOS connects resistance Rs
After, it is connected with the centre cap of output transformator T1；Resistance R3 one end is connected with the negative input end of amplifier, the other end and PMOS
S the most connected；Two inputs of output transformator T1 are connected with colelctor electrode, the colelctor electrode of audion Q2 of audion Q1 respectively；
The emitter stage of audion Q1, the equal ground connection of emitter stage of audion Q2；After the base stage of audion Q1 is connected with resistance R8, draw with clock
Foot 1 is connected, and after the base stage of audion Q2 is connected with resistance R9, is connected with clock pins 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610518503.7A CN106169912B (en) | 2016-06-28 | 2016-06-28 | Pulse wave generation circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610518503.7A CN106169912B (en) | 2016-06-28 | 2016-06-28 | Pulse wave generation circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106169912A true CN106169912A (en) | 2016-11-30 |
| CN106169912B CN106169912B (en) | 2018-03-16 |
Family
ID=58064575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610518503.7A Active CN106169912B (en) | 2016-06-28 | 2016-06-28 | Pulse wave generation circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106169912B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0532164A3 (en) * | 1991-07-12 | 1994-07-20 | Matsushita Electric Ind Co Ltd | Parabolic signal generator |
| EP1420263A3 (en) * | 2002-11-18 | 2004-12-29 | National Institute of Advanced Industrial Science and Technology | Voltage standard apparatus |
| CN201145864Y (en) * | 2007-12-03 | 2008-11-05 | 北京康拓科技开发总公司 | Numeric control constant-current source |
| EP1585302A3 (en) * | 1996-06-26 | 2010-05-26 | Oki Electric Industry Company, Limited | Telemetry apparatus |
| EP2293423B1 (en) * | 2009-08-28 | 2012-10-10 | Nxp B.V. | Power supply and DC-DC conversion |
| CN203070143U (en) * | 2012-12-11 | 2013-07-17 | 安徽华东光电技术研究所 | Constant current source with adjustable output currents |
| CN203535528U (en) * | 2013-08-02 | 2014-04-09 | 中国矿业大学 | Numerical control DC constant current source circuit |
| CN104617939A (en) * | 2014-12-31 | 2015-05-13 | 上海自动化仪表股份有限公司 | PWM (Pulse Width Modulation) analog quantity based channel switching device |
| CN105510720A (en) * | 2014-10-14 | 2016-04-20 | 北京谊安医疗系统股份有限公司 | Grounding resistance pulse detection and alarm circuit of anaesthesia machine |
| CN205811961U (en) * | 2016-06-28 | 2016-12-14 | 浙江中医药大学 | A kind of pulse wave generation circuit |
-
2016
- 2016-06-28 CN CN201610518503.7A patent/CN106169912B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0532164A3 (en) * | 1991-07-12 | 1994-07-20 | Matsushita Electric Ind Co Ltd | Parabolic signal generator |
| EP1585302A3 (en) * | 1996-06-26 | 2010-05-26 | Oki Electric Industry Company, Limited | Telemetry apparatus |
| EP1420263A3 (en) * | 2002-11-18 | 2004-12-29 | National Institute of Advanced Industrial Science and Technology | Voltage standard apparatus |
| CN201145864Y (en) * | 2007-12-03 | 2008-11-05 | 北京康拓科技开发总公司 | Numeric control constant-current source |
| EP2293423B1 (en) * | 2009-08-28 | 2012-10-10 | Nxp B.V. | Power supply and DC-DC conversion |
| CN203070143U (en) * | 2012-12-11 | 2013-07-17 | 安徽华东光电技术研究所 | Constant current source with adjustable output currents |
| CN203535528U (en) * | 2013-08-02 | 2014-04-09 | 中国矿业大学 | Numerical control DC constant current source circuit |
| CN105510720A (en) * | 2014-10-14 | 2016-04-20 | 北京谊安医疗系统股份有限公司 | Grounding resistance pulse detection and alarm circuit of anaesthesia machine |
| CN104617939A (en) * | 2014-12-31 | 2015-05-13 | 上海自动化仪表股份有限公司 | PWM (Pulse Width Modulation) analog quantity based channel switching device |
| CN205811961U (en) * | 2016-06-28 | 2016-12-14 | 浙江中医药大学 | A kind of pulse wave generation circuit |
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| Publication number | Publication date |
|---|---|
| CN106169912B (en) | 2018-03-16 |
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Application publication date: 20161130 Assignee: Dalishen Medical Apparatus & Instruments Co., Ltd., Hangzhou City Assignor: Zhejiang Chinese Medicine University Contract record no.: 2018330000116 Denomination of invention: Pulse wave generation circuit Granted publication date: 20180316 License type: Exclusive License Record date: 20181031 |