CN106169912B - Pulse wave generation circuit - Google Patents
Pulse wave generation circuit Download PDFInfo
- Publication number
- CN106169912B CN106169912B CN201610518503.7A CN201610518503A CN106169912B CN 106169912 B CN106169912 B CN 106169912B CN 201610518503 A CN201610518503 A CN 201610518503A CN 106169912 B CN106169912 B CN 106169912B
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- Prior art keywords
- circuit
- resistance
- amplifier
- output
- triode
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Classifications
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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
Abstract
The invention discloses a kind of pulse wave generation circuit, is mainly made up of DA circuits, filter circuit, discharge circuit, metal-oxide-semiconductor circuit.By being adjusted to D/A output voltage, filtered after DA outputs by filter circuit, then by amplifier amplification and metal-oxide-semiconductor constant current, obtained output waveform controls output pulse width and cycle by clock circuit, so as to obtain final impulse output circuit.Circuit DA uses high-precision chip, and additional metal-oxide-semiconductor circuit, circuit is simple, and reliability is high, and filter circuit uses capacitance-resistance filter mode, and quiescent current is minimum when metal-oxide-semiconductor works, and than traditional transistor circuit, has smaller quiescent current, conducting speed is faster.This circuit is high to temperature stability, and current loss is small, and precision is high, the advantages that bearing broader input voltage range.Improving DA precision makes that circuit output current stepping is thinner, and output current is more steady, and circuit works long hours reliable and stable.
Description
Technical field
The present invention relates to electricity field, more particularly to a kind of pulse wave generation circuit.
Background technology
For traditional pulse wave generation circuit, because the DA output accuracies that system uses are low, cause whole pulse generation
Circuit precision is low, the shortcomings of the Ic current vs. temperature sensitivities of triode.Precision of the impulse generator DA precision to whole product
Influence is very big, and the present invention is directed to disadvantages mentioned above, has invented a kind of novel pulse wave generation circuit, additional using high-precision DA
Metal-oxide-semiconductor circuit, circuit is simple, and reliability is high, and high to temperature stability, and current loss is small, and circuit can bear broader defeated
The advantages that entering voltage range.Improving DA precision makes that circuit output current stepping is thinner, and output current is more stable.Metal-oxide-semiconductor has work
It is extremely low to make electric current, the advantages that Ron conducting resistances are small, and in-fighting is small.Whole pulse-generator circuit power consumption is made more using metal-oxide-semiconductor driving
It is low, the advantages that caloric value is small.
The content of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a kind of pulse wave generation circuit.
The purpose of the present invention is achieved through the following technical solutions：A kind of pulse wave generation circuit, the generation circuit
Including DA numerals turn analog circuit, resistance R0, electric capacity C3, amplifier, resistance R1, resistance R3, electric capacity C1, PMOS, resistance R80,
Resistance Rs, output transformer T1, triode Q1, triode Q2, resistance R8, resistance R9, clock pins 1 and clock pins 2.It is described
DA numerals turn the output end of analog circuit and are connected with R0 one end, and the R0 other end 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 supplys, the ground pin of amplifier
Ground connection, electric capacity C1 one end are connected with the output end of amplifier, and the other end is connected with the negative input end of amplifier；The output end of amplifier with
Resistance R1 one end is connected, the G poles of resistance R1 other end connection PMOS, after the d poles connection resistance R80 of PMOS, with 9v
Power supply is connected；After the s poles connection resistance Rs of PMOS, it is connected with the centre cap for exporting transformer 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；Export transformer T1 two inputs respectively with triode Q1
Colelctor electrode, triode Q2 colelctor electrode is connected；Triode Q1 emitter stage, triode Q2 emitter stage is grounded；Triode
After Q1 base stage is connected with resistance R8, it is connected with clock pins 1, after triode Q2 base stage is connected with resistance R9, draws with clock
Pin 2 is connected.
The beneficial effects of the present invention are：The high-precision constant flow source circuit can realize that 0-4V voltages control 0-50mA electric currents are defeated
Go out, using operational amplifier as constant-current source output driving, 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, as driving, the temperature drift that works long hours is small, and output is stable, battery life is longer.
Higher than traditional circuit stability exported of being made of triode, precision is high.
Brief description of the drawings
Fig. 1 is the circuit diagram of the present invention.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in figure 1, a kind of pulse wave generation circuit of the present invention, including DA numerals turn analog circuit, resistance R0, electric capacity
C3, amplifier, resistance R1, resistance R3, electric capacity C1, PMOS, resistance R80, resistance Rs, output transformer T1, triode Q1, three poles
Pipe Q2, resistance R8, resistance R9, clock pins 1 and clock pins 2.
DA numerals in the present invention, which turn analog circuit, to use product, the amplifiers such as ti, maxim to 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 for exporting transformer T1 is 1:100~120.
DA numerals turn the output end of analog circuit and are connected with R0 one end, the R0 other end and the positive input terminal phase of amplifier
Even, electric capacity C3 one end ground connection, the other end are connected with the positive input terminal of amplifier；The power pin of amplifier is connected with 9v power supplys, fortune
The ground pin ground connection put, electric capacity C1 one end are connected with the output end of amplifier, and the other end is connected with the negative input end of amplifier；Amplifier
Output end be connected with resistance R1 one end, the G poles of resistance R1 other end connection PMOS, the d poles connection resistance of PMOS
After R80, it is connected with 9v power supplys；After the s poles connection resistance Rs of PMOS, it is connected with the centre cap for exporting transformer 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；Export transformer T1 two inputs difference
Colelctor electrode, triode Q2 colelctor electrode with triode Q1 are connected；Triode Q1 emitter stage, triode Q2 emitter stage connects
Ground；After triode Q1 base stage is connected with resistance R8, it is connected with clock pins 1, after triode Q2 base stage is connected with resistance R9,
It is connected with clock pins 2.
After system electrification, input signal forms analog signal after DA numerals revolving die intends circuit conversion, and analog signal passes through
After the filter circuit filtering of resistance R0 and electric capacity C3 compositions, amplify through amplifier, form amplified signal；Permanent by PMOS output
Stream source, output transformer T1 is input to, meanwhile, clock pins 1 and clock pins 2 are connected by the single-chip microcomputer in the external world, to output
Transformer T1 output sequence is regulated and controled, so as to obtain the waveform of high accuracy and high stability.
Claims (1)
- A kind of 1. pulse wave generation circuit, it is characterised in that it is described generation circuit including DA numerals turn analog circuit, resistance R0, Electric capacity C3, amplifier, resistance R1, resistance R3, electric capacity C1, PMOS, resistance R80, resistance Rs, output transformer T1, triode Q1, Triode Q2, resistance R8, resistance R9, clock pins 1 and clock pins 2；The DA numerals turn the output end and R0 of analog circuit One end be connected, the R0 other end is connected with the positive input terminal of amplifier, electric capacity C3 one end ground connection, the other end and amplifier it is just defeated Enter end to be connected；The power pin of amplifier is connected with 9v power supplys, the ground pin ground connection of amplifier, electric capacity C1 one end and the output of amplifier End is connected, and the other end is connected with the negative input end of amplifier；The output end of amplifier is connected with resistance R1 one end, and resistance R1's is another The G poles of end connection PMOS, after the d poles connection resistance R80 of PMOS, it is connected with 9v power supplys；The s poles connection resistance Rs of PMOS Afterwards, it is connected with exporting transformer T1 centre cap；Resistance R3 one end is connected with the negative input end of amplifier, the other end and PMOS S extremely be connected；The colelctor electrode with triode Q1, triode Q2 colelctor electrode are connected output transformer T1 two inputs respectively； Triode Q1 emitter stage, triode Q2 emitter stage is grounded；After triode Q1 base stage is connected with resistance R8, draw with clock Pin 1 is connected, and after triode Q2 base stage 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 CN106169912A (en) | 2016-11-30 |
| CN106169912B true CN106169912B (en) | 2018-03-16 |
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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 |
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| CN (1) | CN106169912B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3318932B2 (en) * | 1991-07-12 | 2002-08-26 | 松下電器産業株式会社 | Parabolic signal generator |
| JP3834635B2 (en) * | 2002-11-18 | 2006-10-18 | 独立行政法人産業技術総合研究所 | Voltage standard equipment |
| CN201145864Y (en) * | 2007-12-03 | 2008-11-05 | 北京康拓科技开发总公司 | Numeric control constant-current source |
| 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 |
-
2016
- 2016-06-28 CN CN201610518503.7A patent/CN106169912B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN106169912A (en) | 2016-11-30 |
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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 |