CN208158554U - A kind of programmable saw-toothed oscillator based on more vector error amplifiers - Google Patents
A kind of programmable saw-toothed oscillator based on more vector error amplifiers Download PDFInfo
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- CN208158554U CN208158554U CN201820583625.9U CN201820583625U CN208158554U CN 208158554 U CN208158554 U CN 208158554U CN 201820583625 U CN201820583625 U CN 201820583625U CN 208158554 U CN208158554 U CN 208158554U
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- 239000003990 capacitor Substances 0.000 claims description 31
- 238000001514 detection method Methods 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 11
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000012805 post-processing Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 1
- 210000000080 chela (arthropods) Anatomy 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
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Abstract
The utility model discloses a kind of programmable saw-toothed oscillators based on more vector error amplifiers, belong to electronic technology field, including PWM square-wave generator, saw-tooth wave generating circuit, multichannel vector error operational amplifier circuit, detect controller and analogue selector, solves low temperature influence, the technical issues of saw-toothed oscillator of low harmonics distortion electric current and high response speed, the saw-tooth wave generating circuit of the utility model can significantly improve influence of the temperature to output, the utility model is using multichannel vector error operational amplifier circuit as post-processing circuit, realize low harmonics distortion electric current and high response speed, improve the precision of sawtooth wave；The utility model provides flexible input signal interface for user, and user can overlap out PWM square wave as input signal by single-chip microcontroller or digital circuit, easy to operate.
Description
Technical field
The utility model belongs to electronic technology field, in particular to a kind of programmable sawtooth based on more vector error amplifiers
Wave oscillator.
Background technique
General saw-toothed wave generator be change is sent to capacitor charging by a transistor constant current source it is linear, but
That the voltage of base stage to the emitter of transistor constant current source changes with temperature funtion, output frequency can variation with temperature and
Variation.
And in the later period enhanced processing of the signal of saw-toothed wave generator, in order to make later period amplifying circuit stable state when
It waits and obtains very low harmonic distortion electric current, the error amplifier for needing a bandwidth very low, and in order to make the harmonic wave of input current
Distortion is minimum, it is also necessary to which the working frequency of guarantee error amplifier as far as possible is small as far as possible, if but error amplifier can make circuit
Low harmonic distortion electric current is obtained, it must be to the low-response of load variation.
Utility model content
The purpose of the utility model is to provide a kind of programmable saw-toothed oscillators based on more vector error amplifiers, solve
The technical issues of saw-toothed oscillator of low temperature influence, low harmonics distortion electric current and high response speed.
To achieve the above object, the utility model uses following technical scheme：
A kind of programmable saw-toothed oscillator based on more vector error amplifiers, including PWM square-wave generator, sawtooth wave hair
Raw circuit, multichannel vector error operational amplifier circuit, detection controller and analogue selector, PWM square-wave generator connect sawtooth wave hair
Raw circuit, saw-tooth wave generating circuit connect multichannel vector error operational amplifier circuit, and multichannel vector error operational amplifier circuit exports two-way mould
Analog quantity, respectively analog quantity OUT1 and analog quantity OUT2, analog quantity OUT1 and analog quantity OUT2 are output to analog selection respectively
Two input terminals of device, analog quantity OUT1 and analog quantity OUT2 are also respectively inputted to two AD sampling ends of detection controller
Mouthful, the control terminal of detection controller connection analogue selector；
Saw-tooth wave generating circuit includes resistance R1, resistance R2, resistance R7, capacitor C3, resistance R3, capacitor C1, triode Q2
It is that successively sequential series connect with resistance R8, resistance R1, resistance R2, resistance R7 and capacitor C3, wherein resistance R1 connection positive electricity
The connecting node of source, capacitor C3 connection ground wire, resistance R1 and resistance R2 also pass through the emitter of capacitor C1 connecting triode Q2, electricity
The connecting node for hindering R2 and resistance R7 passes through the base stage of resistance R3 connecting triode Q2, and the collector of triode Q2 connects positive electricity
Source, the emitter of triode Q2 also pass through resistance R8 connection ground wire, the transmitting extremely saw-tooth wave generating circuit of triode Q2 it is defeated
The connecting node of outlet, resistance R7 and capacitor C3 are the input terminal of saw-tooth wave generating circuit；
The input terminal of PWM square-wave generator connection saw-tooth wave generating circuit；
Multichannel vector error operational amplifier circuit include amplifier IC1, resistance R4, resistance R5, resistance R9, amplifier IC2, resistance R10,
1 foot of amplifier IC3 and capacitor C4, resistance R9 are the input terminal of multichannel vector error operational amplifier circuit, and 2 feet of resistance R9 pass through resistance
The negative input end of R4 connection amplifier IC1,2 feet of resistance R9 pass through the negative input end of resistance R10 connection amplifier IC2, and the 2 of resistance R9
Foot is also connected with the negative input end of amplifier IC3, and the positive input terminal of amplifier IC1 connects 2.6V voltage, amplifier IC1, resistance R4 and resistance
R5 constitutes the high voltage clamper path of multichannel vector error operational amplifier circuit, and the positive input terminal of amplifier IC2 connects 2.3V voltage, fortune
It puts IC2 and resistance R10 and constitutes the low pressure clamper path of multichannel vector error operational amplifier circuit, amplifier IC3 is then that multichannel vector misses
The main path of poor operational amplifier circuit, capacitor C4 are connected in parallel on the output end of amplifier IC3, and capacitor C4 is the compensating electric capacity of amplifier IC3；Amplifier
The output end of the output end connection amplifier IC2 of IC3；
The output end of amplifier IC1 and the output end of amplifier IC3 constitute two outputs of multichannel vector error operational amplifier circuit
End, the output end of amplifier IC1 export analog quantity OUT1, and the output end of amplifier IC3 exports analog quantity OUT2.
The PWM square-wave generator is single-chip microcontroller, and single-chip microcontroller passes through the port DA that PWM square-wave signal occurs to itself, institute
State 1 foot that the port DA connects the resistance R9.
The detection controller is the microcontroller at least provided with two AD input terminals, the analog quantity OUT1 and the mould
Analog quantity OUT2 is separately input to two AD input terminals of microcontroller, and microcontroller also passes through I/O port and connects the analogue selector
Control terminal.
The model CD4501 of the analogue selector, the analogue selector are equipped with control terminal A/B/C, path input
S0~S7 and output end IO, the analog quantity OUT1 and the analog quantity OUT2 are input into any of path input S0~S7
Connect in a, control terminal A/B/C connects the I/O port of the microcontroller.
A kind of programmable saw-toothed oscillator based on more vector error amplifiers described in the utility model, solves low temperature
The technical issues of saw-toothed oscillator of degree influence, low harmonics distortion electric current and high response speed, the sawtooth wave of the utility model
Circuit, which occurs, can significantly improve influence of the temperature to output, after the utility model is used as using multichannel vector error operational amplifier circuit
Phase processing circuit realizes low harmonics distortion electric current and high response speed, improves the precision of sawtooth wave；The utility model is to use
Family provides flexible input signal interface, and user can overlap out PWM square wave as input letter by single-chip microcontroller or digital circuit
Number, it is easy to operate.
Detailed description of the invention
Fig. 1 is the systematic schematic diagram block diagram of the utility model；
Fig. 2 is the saw-tooth wave generating circuit of the utility model and the circuit diagram of multichannel vector error operational amplifier circuit.
Specific embodiment
A kind of programmable saw-toothed oscillator based on more vector error amplifiers as depicted in figs. 1 and 2, including the side PWM
Wave producer, saw-tooth wave generating circuit, multichannel vector error operational amplifier circuit, detection controller and analogue selector, PWM square wave hair
Raw device connects saw-tooth wave generating circuit, and saw-tooth wave generating circuit connects multichannel vector error operational amplifier circuit, multichannel vector error fortune
Put circuit output two-way analog quantity, respectively analog quantity OUT1 and analog quantity OUT2, analog quantity OUT1 and analog quantity OUT2 difference
Two input terminals of analogue selector are output to, analog quantity OUT1 and analog quantity OUT2 are also respectively inputted to detection controller
Two AD sample ports, detection controller connection analogue selector control terminal；
Saw-tooth wave generating circuit includes resistance R1, resistance R2, resistance R7, capacitor C3, resistance R3, capacitor C1, triode Q2
It is that successively sequential series connect with resistance R8, resistance R1, resistance R2, resistance R7 and capacitor C3, wherein resistance R1 connection positive electricity
The connecting node of source, capacitor C3 connection ground wire, resistance R1 and resistance R2 also pass through the emitter of capacitor C1 connecting triode Q2, electricity
The connecting node for hindering R2 and resistance R7 passes through the base stage of resistance R3 connecting triode Q2, and the collector of triode Q2 connects positive electricity
Source, the emitter of triode Q2 also pass through resistance R8 connection ground wire, the transmitting extremely saw-tooth wave generating circuit of triode Q2 it is defeated
The connecting node of outlet, resistance R7 and capacitor C3 are the input terminal of saw-tooth wave generating circuit；
The input terminal of PWM square-wave generator connection saw-tooth wave generating circuit；
Multichannel vector error operational amplifier circuit include amplifier IC1, resistance R4, resistance R5, resistance R9, amplifier IC2, resistance R10,
1 foot of amplifier IC3 and capacitor C4, resistance R9 are the input terminal of multichannel vector error operational amplifier circuit, and 2 feet of resistance R9 pass through resistance
The negative input end of R4 connection amplifier IC1,2 feet of resistance R9 pass through the negative input end of resistance R10 connection amplifier IC2, and the 2 of resistance R9
Foot is also connected with the negative input end of amplifier IC3, and the positive input terminal of amplifier IC1 connects 2.6V voltage, amplifier IC1, resistance R4 and resistance
R5 constitutes the high voltage clamper path of multichannel vector error operational amplifier circuit, and the positive input terminal of amplifier IC2 connects 2.3V voltage, fortune
It puts IC2 and resistance R10 and constitutes the low pressure clamper path of multichannel vector error operational amplifier circuit, amplifier IC3 is then that multichannel vector misses
The main path of poor operational amplifier circuit, capacitor C4 are connected in parallel on the output end of amplifier IC3, and capacitor C4 is the compensating electric capacity of amplifier IC3；Amplifier
The output end of the output end connection amplifier IC2 of IC3；
The output end of amplifier IC1 and the output end of amplifier IC3 constitute two outputs of multichannel vector error operational amplifier circuit
End, the output end of amplifier IC1 export analog quantity OUT1, and the output end of amplifier IC3 exports analog quantity OUT2.
The PWM square-wave generator is single-chip microcontroller, and single-chip microcontroller passes through the port DA that PWM square-wave signal occurs to itself, institute
State 1 foot that the port DA connects the resistance R9.
The PWM square-wave generator can also be the digital circuit that user voluntarily builds.
The detection controller is the microcontroller at least provided with two AD input terminals, the analog quantity OUT1 and the mould
Analog quantity OUT2 is separately input to two AD input terminals of microcontroller, and microcontroller also passes through I/O port and connects the analogue selector
Control terminal.
The detection controller can also be the simulation new signal sample circuit that user voluntarily builds.
The model CD4501 of the analogue selector, the analogue selector are equipped with control terminal A/B/C, path input
S0~S7 and output end IO, the analog quantity OUT1 and the analog quantity OUT2 are input into any of path input S0~S7
Connect in a, control terminal A/B/C connects the I/O port of the microcontroller.
In saw-tooth wave generating circuit, capacitor C3 is to be filled by supply voltage VCC by resistance R1, resistance R2 and resistance R7
Electricity, the electric discharge of capacitor C3 are then directly sweared by the port of PWM square-wave generator after the electric discharge that continues, PWM square-wave generator and multichannel
Measuring also needs to increase a current-limiting resistance progress current limliting between the input terminal of error operational amplifier circuit (does not show in the current-limiting resistance figure
Out), the charging and discharging characteristic that the tie point between resistance R7 and resistance R3 can draw capacitor C3 generates sawtooth wave, which exists
It is exported after triode Q2 amplification, output frequency of oscillation is calculated by following formula：
F=[0.75 × (R1+R2)+0.693 × R7]/C3；Wherein R1 is the resistance value of resistance R1, and R2 is the resistance of resistance R2
Value, R7 are the resistance value of resistance R7, and C3 is the capacitance of capacitor C3, and user can be by changing resistance R1, resistance R2, resistance R7 and electricity
Hold the value of C3 to change the frequency of sawtooth wave, the utility model greatly improves sawtooth wave by the way of external PWM square wave
The temperature stability of circuit occurs.
In multichannel vector error operational amplifier circuit, when the output voltage of saw-tooth wave generating circuit is in 2.6V to 2.3V, amplifier
IC3 work, amplifier bandwidth is determined by amplifier IC3 and compensating electric capacity C4 at this time；
When the output voltage of saw-tooth wave generating circuit is greater than 2.6V, amplifier IC1, resistance R4 and resistance R5 work, amplifier
IC1, resistance R4 and resistance R5 constitute a low gain amplifier, realize to input voltage callipers brake vehicle, realize the pincers to high voltage
Position；
When the output voltage of saw-tooth wave generating circuit is less than 2.3V, amplifier IC2 and resistance R10 work, amplifier IC2 and electricity
Resistance R10 constitutes clamp circuit and the output electric current of error amplifier is increased, to increase amplifier input voltage clamper in 2.3V
Bandwidth.
The utility model can be using saw-tooth wave generating circuit and multichannel vector error operational amplifier circuit as individual integrated mould
Block uses, and user can be in such a way that the circuit of flexible choice PWM square-wave generator, detection controller and analogue selector be built.
A kind of programmable saw-toothed oscillator based on more vector error amplifiers described in the utility model, solves low temperature
The technical issues of saw-toothed oscillator of degree influence, low harmonics distortion electric current and high response speed, the sawtooth wave of the utility model
Circuit, which occurs, can significantly improve influence of the temperature to output, after the utility model is used as using multichannel vector error operational amplifier circuit
Phase processing circuit realizes low harmonics distortion electric current and high response speed, improves the precision of sawtooth wave；The utility model is to use
Family provides flexible input signal interface, and user can overlap out PWM square wave as input letter by single-chip microcontroller or digital circuit
Number, it is easy to operate.
Claims (4)
1. a kind of programmable saw-toothed oscillator based on more vector error amplifiers, it is characterised in that：Occur including PWM square wave
Device, saw-tooth wave generating circuit, multichannel vector error operational amplifier circuit, detection controller and analogue selector, PWM square-wave generator connect
Saw-tooth wave generating circuit is connect, saw-tooth wave generating circuit connects multichannel vector error operational amplifier circuit, multichannel vector error operational amplifier circuit
Two-way analog quantity is exported, respectively analog quantity OUT1 and analog quantity OUT2, analog quantity OUT1 and analog quantity OUT2 are exported respectively
To two input terminals of analogue selector, analog quantity OUT1 and analog quantity OUT2 are also respectively inputted to two of detection controller
AD sample port, the control terminal of detection controller connection analogue selector；
Saw-tooth wave generating circuit includes resistance R1, resistance R2, resistance R7, capacitor C3, resistance R3, capacitor C1, triode Q2 and electricity
R8 is hindered, resistance R1, resistance R2, resistance R7 and capacitor C3 are that successively sequential series connect, wherein resistance R1 connection positive supply, electricity
The connecting node of appearance C3 connection ground wire, resistance R1 and resistance R2 also pass through the emitter of capacitor C1 connecting triode Q2, resistance R2
Passing through the base stage of resistance R3 connecting triode Q2 with the connecting node of resistance R7, the collector of triode Q2 connects positive supply, and three
The emitter of pole pipe Q2 also passes through resistance R8 connection ground wire, the output end of the transmitting extremely saw-tooth wave generating circuit of triode Q2,
The connecting node of resistance R7 and capacitor C3 is the input terminal of saw-tooth wave generating circuit；
The input terminal of PWM square-wave generator connection saw-tooth wave generating circuit；
Multichannel vector error operational amplifier circuit includes amplifier IC1, resistance R4, resistance R5, resistance R9, amplifier IC2, resistance R10, amplifier
1 foot of IC3 and capacitor C4, resistance R9 are the input terminal of multichannel vector error operational amplifier circuit, and 2 feet of resistance R9 are connected by resistance R4
The negative input end of amplifier IC1 is connect, 2 feet of resistance R9 pass through the negative input end of resistance R10 connection amplifier IC2, and 2 feet of resistance R9 are also
The negative input end of amplifier IC3 is connected, the positive input terminal of amplifier IC1 connects 2.6V voltage, amplifier IC1, resistance R4 and resistance R5 structure
At the high voltage clamper path of multichannel vector error operational amplifier circuit, the positive input terminal of amplifier IC2 connects 2.3V voltage, amplifier
IC2 and resistance R10 constitutes the low pressure clamper path of multichannel vector error operational amplifier circuit, and amplifier IC3 is then multichannel vector error
The main path of operational amplifier circuit, capacitor C4 are connected in parallel on the output end of amplifier IC3, and capacitor C4 is the compensating electric capacity of amplifier IC3；Amplifier
The output end of the output end connection amplifier IC2 of IC3；
The output end of amplifier IC1 and the output end of amplifier IC3 constitute two output ends of multichannel vector error operational amplifier circuit, fortune
The output end for putting output end output the analog quantity OUT1, amplifier IC3 of IC1 exports analog quantity OUT2.
2. a kind of programmable saw-toothed oscillator based on more vector error amplifiers as described in claim 1, it is characterised in that：
The PWM square-wave generator is single-chip microcontroller, and single-chip microcontroller passes through the port DA that PWM square-wave signal occurs to itself, the port DA
Connect 1 foot of the resistance R9.
3. a kind of programmable saw-toothed oscillator based on more vector error amplifiers as described in claim 1, it is characterised in that：
The detection controller is the microcontroller at least provided with two AD input terminals, the analog quantity OUT1 and the analog quantity OUT2
Two AD input terminals of microcontroller are separately input to, microcontroller also passes through the control that I/O port connects the analogue selector
End.
4. a kind of programmable saw-toothed oscillator based on more vector error amplifiers as claimed in claim 3, it is characterised in that：
The model CD4501 of the analogue selector, the analogue selector be equipped with control terminal A/B/C, path input S0~S7 and
Output end IO, the analog quantity OUT1 and the analog quantity OUT2 are input into any of path input S0~S7 and connect in a,
Control terminal A/B/C connects the I/O port of the microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820583625.9U CN208158554U (en) | 2018-04-24 | 2018-04-24 | A kind of programmable saw-toothed oscillator based on more vector error amplifiers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820583625.9U CN208158554U (en) | 2018-04-24 | 2018-04-24 | A kind of programmable saw-toothed oscillator based on more vector error amplifiers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208158554U true CN208158554U (en) | 2018-11-27 |
Family
ID=64376230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820583625.9U Expired - Fee Related CN208158554U (en) | 2018-04-24 | 2018-04-24 | A kind of programmable saw-toothed oscillator based on more vector error amplifiers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208158554U (en) |
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2018
- 2018-04-24 CN CN201820583625.9U patent/CN208158554U/en not_active Expired - Fee Related
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Granted publication date: 20181127 |