CN201926947U - Duty ratio adjustable current source based on singlechip control - Google Patents
Duty ratio adjustable current source based on singlechip control Download PDFInfo
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- CN201926947U CN201926947U CN2010206861020U CN201020686102U CN201926947U CN 201926947 U CN201926947 U CN 201926947U CN 2010206861020 U CN2010206861020 U CN 2010206861020U CN 201020686102 U CN201020686102 U CN 201020686102U CN 201926947 U CN201926947 U CN 201926947U
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- duty ratio
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Abstract
The utility model relates to the constant current source field of current output, particularly relates to a duty ratio adjustable current source based on singlechip control and is characterized in that the current source comprises a constant current source circuit, wherein the constant current source circuit is connected with a current sampling circuit and a voltage sampling circuit; the current sampling circuit and the voltage sampling circuit are connected with a programmed singlechip; the singlechip is coupled with a function regulation key and a display screen, and controls and is connected with a current feedback control circuit and a reference voltage control circuit; and the current feedback control circuit and the reference voltage control circuit control and are coupled with the constant current source circuit. The duty ratio adjustable current source based on the singlechip control has the advantages that: an adjustable plus-minus impulse source is added on the basis of an ordinary constant current source, and the size of the plus-minus impulse source and the duty ratio can be adjusted; in addition, the precise closed ring feedback control function is added on the signal control treatment, so that the output current source is more stabile and reliable.
Description
Technical field
The utility model relates to the continuous current source domain of electric current output, is specifically related to a kind of current source based on monolithic processor controlled EDM Generator of Adjustable Duty Ratio joint.
Background technology
In the current source field of constant current output, the electric current of output is direct current normally, and size of current can be controlled.But for electroplating microwave electrodes, because its request for utilization difference, common constant current source can only guarantee the precision of output current and the size of electric current, but can't guarantee the positive negative pulse stuffing source that output current is constant, and pulse width also can't be adjusted, so common constant current source can't satisfy application requirements.
Summary of the invention
The purpose of this utility model is according to above-mentioned the deficiencies in the prior art, and a kind of current source based on monolithic processor controlled EDM Generator of Adjustable Duty Ratio joint is provided, and this current source is by accurate FEEDBACK CONTROL link, the positive negative pulse stuffing source that can export high stable.。
The utility model purpose realizes being finished by following technical scheme:
A kind of current source based on monolithic processor controlled EDM Generator of Adjustable Duty Ratio joint, it is characterized in that: described current source comprises a constant-current source circuit, described constant-current source circuit is connected with a current sampling circuit and a voltage sampling circuit, described current sampling circuit and voltage sampling circuit are connected with a single-chip microcomputer that is programmed, described single-chip microcomputer is coupled with a function and regulates a button and a display screen, and control linkage has a Current Feedback Control circuit and a reference voltage control circuit, and described Current Feedback Control circuit and reference voltage control circuit control are coupled with described constant-current source circuit.
Described constant-current source circuit is made of precision instrument amplifier and high-power darlington pipe.
Described current source comprises a non-volatile storer, and this storer establishes with described single-chip microcomputer and is connected.
The utility model has the advantages that: on the basis of common constant current source, added adjustable positive negative pulse stuffing source, and the size in positive negative pulse stuffing source and dutycycle can be adjusted; Added the function of accurate close-loop feedback control in addition on signal controlling is handled, Shu Chu current source can be more reliable and stable like this.
Description of drawings
Fig. 1 is the utility model constant current source theory diagram.
Embodiment
Feature of the present invention and other correlated characteristics are described in further detail by example below in conjunction with accompanying drawing, so that technician's of the same trade understanding:
As shown in Figure 1, label 1-8 represents respectively: current sampling circuit 1, voltage sampling circuit 2, single-chip microcomputer 3, Current Feedback Control circuit 4, reference voltage control circuit 5, function are regulated button 6, LCD display 7, constant-current source circuit 8.
Principle of the present utility model is as follows:
Use single-chip microcomputer 3 to produce the adjustable positive negative pulse stuffing signal of dutycycle, drive the constant-current source circuit of being made up of Darlington transistor 8, the current value of current output simultaneously and magnitude of voltage enter single-chip microcomputer 3 through current sampling circuit 1, voltage sampling circuit 2.After single-chip microcomputer 3 processing, generate positive negative pulse stuffing signal and the voltage voltage regulation signal that has feedback quantity once more, output signal to be regulated, this has just formed a close-loop feedback control, makes output current value more stable, and has improved the reliability of system.
Referring to Fig. 1, the concrete structure in the present embodiment is as follows:
Constant-current source circuit 8 is made up of precision instrument amplifier, high-power darlington pipe, current sampling circuit 1 and voltage sampling circuit 2 take out electric current and voltage signal respectively from constant-current source circuit 8, send into after the pre-service in the single-chip microcomputer 3, single-chip microcomputer 3 produces the electric current and the voltage signal of Error Feedback respectively according to sampled signal, and is fed back in the constant-current source circuit 8 by Current Feedback Control circuit 4 and reference voltage control circuit 5.The controlled constant current positive negative pulse stuffing source of constant-current source circuit 8 outputs.In addition, the dutycycle of two-way sampled signal and impulse source can show on the LCD display 7 that plate carries in real time; Regulate button 6 by function, can preset pulse current value, dutycycle and the reference voltage level of output, preset value can also be stored in the non-volatile storer of a slice on the circuit board, open constant current source once more after, can load the preset value of last time automatically.
Claims (3)
1. current source based on monolithic processor controlled EDM Generator of Adjustable Duty Ratio joint, it is characterized in that: described current source comprises a constant-current source circuit, described constant-current source circuit is connected with a current sampling circuit and a voltage sampling circuit, described current sampling circuit and voltage sampling circuit are connected with a single-chip microcomputer that is programmed, described single-chip microcomputer is coupled with a function and regulates a button and a display screen, and control linkage has a Current Feedback Control circuit and a reference voltage control circuit, and described Current Feedback Control circuit and reference voltage control circuit control are coupled with described constant-current source circuit.
2. a kind of current source based on monolithic processor controlled EDM Generator of Adjustable Duty Ratio joint according to claim 1, it is characterized in that: described constant-current source circuit is made of precision instrument amplifier and high-power darlington pipe.
3. a kind of current source according to claim 1 based on monolithic processor controlled EDM Generator of Adjustable Duty Ratio joint, it is characterized in that: described current source comprises a non-volatile storer, this storer establishes with described single-chip microcomputer and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206861020U CN201926947U (en) | 2010-12-29 | 2010-12-29 | Duty ratio adjustable current source based on singlechip control |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206861020U CN201926947U (en) | 2010-12-29 | 2010-12-29 | Duty ratio adjustable current source based on singlechip control |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201926947U true CN201926947U (en) | 2011-08-10 |
Family
ID=44430789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206861020U Expired - Lifetime CN201926947U (en) | 2010-12-29 | 2010-12-29 | Duty ratio adjustable current source based on singlechip control |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201926947U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102413608A (en) * | 2011-10-31 | 2012-04-11 | 杭州矽力杰半导体技术有限公司 | Reference voltage regulation method and circuit as well as constant-current source driving circuit utilizing same |
| CN103066492A (en) * | 2012-12-14 | 2013-04-24 | 青岛镭创光电技术有限公司 | Laser device wide-temperature circuit |
| CN108680286A (en) * | 2018-07-04 | 2018-10-19 | 杭州盘古自动化***有限公司 | One kind is for high-resolution heat flow signal measuring system under the wide warm area of high magnetic environment |
-
2010
- 2010-12-29 CN CN2010206861020U patent/CN201926947U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102413608A (en) * | 2011-10-31 | 2012-04-11 | 杭州矽力杰半导体技术有限公司 | Reference voltage regulation method and circuit as well as constant-current source driving circuit utilizing same |
| CN102413608B (en) * | 2011-10-31 | 2014-02-05 | 矽力杰半导体技术(杭州)有限公司 | Reference voltage regulation method and circuit as well as constant-current source driving circuit utilizing same |
| CN103066492A (en) * | 2012-12-14 | 2013-04-24 | 青岛镭创光电技术有限公司 | Laser device wide-temperature circuit |
| CN108680286A (en) * | 2018-07-04 | 2018-10-19 | 杭州盘古自动化***有限公司 | One kind is for high-resolution heat flow signal measuring system under the wide warm area of high magnetic environment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110810 |
|
| CX01 | Expiry of patent term |