CN203711156U - Secondary voltage conditioning circuit of high-frequency dust removing power supply - Google Patents
Secondary voltage conditioning circuit of high-frequency dust removing power supply Download PDFInfo
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- CN203711156U CN203711156U CN201420045675.3U CN201420045675U CN203711156U CN 203711156 U CN203711156 U CN 203711156U CN 201420045675 U CN201420045675 U CN 201420045675U CN 203711156 U CN203711156 U CN 203711156U
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Abstract
The utility model discloses a secondary voltage conditioning circuit of a high-frequency dust removing power supply. The secondary voltage conditioning circuit comprises a filter suppression circuit, an RC (Resistor Capacitor) filter circuit, a second-order Butterworth filter circuit, an inverting and amplifying circuit, an opto-coupler isolation circuit and a following amplitude limiting circuit which are connected in sequence. An input signal is filtered by the RC filter circuit after being subjected to filter suppression by the filter suppression circuit, a signal is input to the inverting and amplifying circuit after being filtered by the second-order Butterworth filter circuit, is output to the following amplitude limiting circuit through optoelectronic signal conversion of the opto-coupler isolation circuit after being output by the inverting and amplifying circuit, and input to a digital signal processor after being filtered by the RC filter circuit. The secondary voltage conditioning circuit comprises multiple filter circuits so that the accuracy of the signal input to the digital signal processor can be ensured. The secondary voltage conditioning circuit is small in circuit high-order wave distortion, good in high-frequency attenuation characteristic and good in interference resistance.
Description
Technical field
The utility model belongs to high-frequency dust removing field of power supplies, relates in particular to a kind of secondary voltage modulate circuit of the high-frequency dust removing power supply being comprised of optocoupler HCPL-600 and second order Butterworth filter circuit.
Background technology
Along with the progressively raising of industrial level, the development of Power Electronic Technique, traditional power frequency dedusting power source cannot meet the power demands of present stage.It is high that the high-frequency dust removing power supply that replaces power frequency supply has delivery efficiency, and the little raising efficiency of dust collection that can be by a relatively large margin of output ripple is realized energy-conservationly, but high frequency power supply mode also increases with respect to the system complexity of power frequency power supply mode thereupon.High-frequency electrostatic dedusting power source system is a kind of high frequency, miniaturization, light-weighted power-supply system, and the switching frequency of system is very high, and therefore, system also increases accordingly at the electromagnetic interference signal of work, thereby makes the collection difficulty of analog signal strengthen.
Summary of the invention
The purpose of this utility model is to provide a kind of secondary voltage modulate circuit of high-frequency dust removing power supply, the secondary voltage signal that this circuit carrys out collection plate collection after filtering, after multiple filter, make signal more stable, by after light-coupled isolation, digital and analogue signals isolation not being interfere with each other, direct supplied with digital signal processor after following amplitude limiter circuit processing.
The purpose of this utility model is achieved through the following technical solutions:
A secondary voltage modulate circuit for high-frequency dust removing power supply, is characterized in that: this circuit comprises that the filtering being linked in sequence successively suppresses circuit, RC filter circuit, second order Butterworth filter circuit, see-saw circuit, optical coupling isolation circuit and follows amplitude limiter circuit.
In the utility model, filtering suppresses circuit and comprises the first electric capacity, transient diode, the first Capacitance parallel connection be connected on signal input part and in analog between.Transient Suppression Diode negative electrode connects in analog.
Described RC filter circuit comprises the 1st resistance, the 2nd electric capacity, forms single order RC low pass filter, and the second electric capacity connects in analog.
Described second order Butterworth filter circuit comprises the 2nd resistance, the 3rd resistance, the 3rd electric capacity, the 4th electric capacity, the 5th electric capacity, the 6th electric capacity and the 1st amplifier.It is little that circuit adopts multiple feedback low-pass filter circuit structure to have higher-order wave distortion, and attenuation characteristics is good, and DC current gain can be from the advantage of setting.
Described see-saw circuit comprises the 4th resistance, the 5th resistance, the 6th resistance, potentiometer and the 2nd amplifier.Wherein the 4th resistance is connected to 2 pin and the second order Butterworth filtered electrical terminal of the 2nd amplifier.The 5th resistance is just joining in analog, and the 6th resistance series resistor device is connected across inverting input and output.This circuit is by regulating the 4th resistance and the 6th resistance value can change anti-phase multiplication factor.
Described optical coupling isolation circuit comprises the 7th resistance, the 8th resistance, the 9th resistance, the 5th electric capacity, the 6th electric capacity, the 3rd amplifier, the 4th amplifier and optocoupler.The main feature of this circuit is to realize the transformation of photosignal, realizes the isolation of signal, digitally clearly demarcated in analog, and the yield value of circuit is determined by the resistance of the 7th resistance and the 9th resistance.With an adjusting resistance ratio, signal being carried out to corresponding amplification dwindles.
The described amplitude limiter circuit of following comprises the 5th amplifier, the 10th resistance, the 7th electric capacity and voltage-stabiliser tube.Amplifier is exported external RC low pass filter, voltage-stabiliser tube be connected to circuit output end and digitally between.
In the utility model, input signal suppresses after filtering circuit signal filtering is suppressed afterwards through the filtering of RC filter circuit, signal is carried out to photosignal conversion output by optical coupling isolation circuit after input inversion amplifying circuit, anti-phase output after second order Butterworth filter circuit carries out filtering and enter and follow amplitude limiter circuit, and carry out being again input to digital signal processor after RC filtering.
The utility model comprises the accuracy that multiple filter circuit can guarantee to be input to the signal of digital signal processor.The distortion of circuit higher-order wave is little, and attenuation characteristics is good, has good anti-interference.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing 1 and Fig. 2, the utility model is described in detail:
As shown in Figure 1, a secondary voltage modulate circuit for high-frequency dust removing power supply, this circuit comprises that the filtering being linked in sequence successively suppresses circuit 1, RC filter circuit 2, second order Butterworth filter circuit 3, see-saw circuit 4, optical coupling isolation circuit 5 and follows amplitude limiter circuit 6.
Filtering suppresses circuit, comprises the 1st capacitor C 1, transient diode T, the 1st Capacitance parallel connection be connected on signal input part and in analog between, Transient Suppression Diode negative electrode connects in analog.For guaranteeing input signal amplitude and reducing, disturb, selected the 1st capacitor C 1 value is at 10nf-20nf, with guarantee can filtering higher than the interfering signal of 20khz, the Transient Suppression Diode voltage limit value of getting is 5v.
RC filter circuit, comprises the 1st resistance R the 1, the 2nd capacitor C 2, forms single order RC low pass filter, and the 2nd electric capacity connects and forms in analog single order low pass RC wave filter input signal is carried out to filtering.
Second order Butterworth filter circuit, comprises the 2nd resistance R the 2, the 3rd resistance R the 3, the 3rd capacitor C the 3, the 4th capacitor C 4 and the 1st amplifier U1A.The design of circuit adopts normalized method, consults resistance capacitance standard value, and in selecting circuit, the resistance of resistance all equates for R, and the capacitance of the 4th electric capacity equates with the capacitance of the 3rd electric capacity.For improving the precision of filter circuit, it is 1% Chip-R that resistance is chosen precision, and electric capacity is chosen the patch capacitor of 5% precision.
See-saw circuit, comprises the 4th resistance R the 4, the 5th resistance R the 5, the 6th resistance R 6, potentiometer and the 2nd amplifier U1B.Wherein the 4th resistance is connected to 2 pin and the second order Butterworth filtered electrical terminal of the 2nd amplifier.The 5th resistance is just joining in analog, and the 6th resistance series resistor device is connected across inverting input and output.By changing the reverse multiplication factor of this circuit that the resistance of the 4th resistance and the 6th resistance is, be 0.2 times, the effect of resistor is to regulate multiplication factor, gets 0-500 ohm of its scopes.
Optical coupling isolation circuit, comprises the 7th resistance R the 7, the 8th resistance R the 8, the 9th resistance R the 9, the 5th capacitor C the 5, the 6th electric capacity, the 3rd amplifier U2A, the 4th amplifier U4A and optocoupler U3.The optocoupler model of herein selecting is HCPL-600, by regulating the resistance value ratio of the 7th resistance and the 9th resistance to carry out corresponding amplification to signal, dwindles.The main feature of this circuit is to realize the transformation of photosignal, realizes the isolation of signal, digitally clearly demarcated in analog.
Follow amplitude limiter circuit, comprise the 5th amplifier U2B, the 10th resistance R the 10, the 8th capacitor C 8 and voltage-stabiliser tube.The 7th capacitor C 7 and the 10th resistance form single order RC filter circuit output signal are carried out to filtering, voltage-stabiliser tube be connected to circuit output end and digitally between, the voltage-stabiliser tube that its model is 5.1v.
Claims (7)
1. a secondary voltage modulate circuit for high-frequency dust removing power supply, is characterized in that: this circuit comprises that the filtering being linked in sequence successively suppresses circuit (1), RC filter circuit (2), second order Butterworth filter circuit (3), see-saw circuit (4), optical coupling isolation circuit (5) and follows amplitude limiter circuit (6).
2. according to the secondary voltage modulate circuit of the high-frequency dust removing power supply described in claims 1, it is characterized in that: described filtering suppresses circuit (1) and comprises the 1st electric capacity, transient diode, the first Capacitance parallel connection be connected on signal input part and in analog between; Transient Suppression Diode negative electrode connects in analog.
3. according to the secondary voltage modulate circuit of the high-frequency dust removing power supply described in claims 1, it is characterized in that: described RC filter circuit (2), comprise the 1st resistance, the 2nd electric capacity, and the 1st resistance and the 2nd electric capacity formation single order RC low pass filter.
4. according to the secondary voltage modulate circuit of the high-frequency dust removing power supply described in claims 1, it is characterized in that: described second order Butterworth filter circuit (3), comprises the 2nd resistance, the 3rd resistance, the 3rd electric capacity, the 4th electric capacity and the 1st amplifier; Second order Butterworth filter circuit (3) adopts multiple feedback low-pass filter circuit structure, and higher-order wave distortion is little, and attenuation characteristics is good, and DC current gain can be from setting.
5. according to the secondary voltage modulate circuit of the high-frequency dust removing power supply described in claims 1, it is characterized in that: described see-saw circuit (4), comprises the 4th resistance, the 5th resistance, the 6th resistance, potentiometer and the 2nd amplifier; Wherein the 4th resistance is connected to 2 pin and second order Butterworth filter circuit (3) end of the 2nd amplifier; The 5th resistance is just joining in analog, and the 6th resistance series resistor device is connected across inverting input and output; This circuit is by regulating the 4th resistance and the 6th resistance value to change anti-phase multiplication factor.
6. according to the secondary voltage modulate circuit of the high-frequency dust removing power supply described in claims 1, it is characterized in that: described optical coupling isolation circuit (5), comprises the 7th resistance, the 8th resistance, the 9th resistance, the 5th electric capacity, the 6th electric capacity, the 3rd amplifier, the 4th amplifier and optocoupler; The transformation that optical coupling isolation circuit (5) is realized photosignal, realizes the isolation of signal, digitally clearly demarcated in analog, and the yield value of circuit is determined by the resistance of the 7th resistance and the 9th resistance; By regulating resistance ratio to carry out corresponding amplification to signal, dwindle.
7. according to the secondary voltage modulate circuit of the high-frequency dust removing power supply described in claims 1, it is characterized in that: the described amplitude limiter circuit (6) of following, comprises the 5th amplifier, the 10th resistance, the 7th electric capacity and voltage-stabiliser tube; Amplifier is exported external RC low pass filter, voltage-stabiliser tube be connected to circuit output end and digitally between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420045675.3U CN203711156U (en) | 2014-01-24 | 2014-01-24 | Secondary voltage conditioning circuit of high-frequency dust removing power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420045675.3U CN203711156U (en) | 2014-01-24 | 2014-01-24 | Secondary voltage conditioning circuit of high-frequency dust removing power supply |
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| Publication Number | Publication Date |
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| CN203711156U true CN203711156U (en) | 2014-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420045675.3U Expired - Fee Related CN203711156U (en) | 2014-01-24 | 2014-01-24 | Secondary voltage conditioning circuit of high-frequency dust removing power supply |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752413A (en) * | 2014-01-24 | 2014-04-30 | 镇江天力变压器有限公司 | Secondary voltage conditioning circuit of high frequency dust removal power supply |
| CN106788383A (en) * | 2016-11-16 | 2017-05-31 | 天津市盛丹电子技术发展有限公司 | A kind of small-signal modulate circuit of non-electrical sensor |
| CN107645899A (en) * | 2017-08-31 | 2018-01-30 | 广东欧珀移动通信有限公司 | Electrostatic protection apparatus and electronic equipment |
-
2014
- 2014-01-24 CN CN201420045675.3U patent/CN203711156U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103752413A (en) * | 2014-01-24 | 2014-04-30 | 镇江天力变压器有限公司 | Secondary voltage conditioning circuit of high frequency dust removal power supply |
| CN103752413B (en) * | 2014-01-24 | 2016-03-23 | 镇江天力变压器有限公司 | A kind of secondary voltage modulate circuit of high-frequency dust removing power supply |
| CN106788383A (en) * | 2016-11-16 | 2017-05-31 | 天津市盛丹电子技术发展有限公司 | A kind of small-signal modulate circuit of non-electrical sensor |
| CN106788383B (en) * | 2016-11-16 | 2024-01-26 | 天津市盛丹电子技术发展有限公司 | Weak signal conditioning circuit of non-electric quantity sensor |
| CN107645899A (en) * | 2017-08-31 | 2018-01-30 | 广东欧珀移动通信有限公司 | Electrostatic protection apparatus and electronic equipment |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20190124 |