CN203849636U - Intelligent load power adjusting circuit - Google Patents
Intelligent load power adjusting circuit Download PDFInfo
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- CN203849636U CN203849636U CN201420003949.2U CN201420003949U CN203849636U CN 203849636 U CN203849636 U CN 203849636U CN 201420003949 U CN201420003949 U CN 201420003949U CN 203849636 U CN203849636 U CN 203849636U
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- coupler
- photo
- type triode
- chip microcomputer
- electronic potentiometer
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Abstract
The utility model discloses an intelligent load power adjusting circuit which comprises a single chip microcomputer, an electronic potentiometer, an optical coupler and an NPN-type triode Q1. A controlled end of the electronic potentiometer is connected with an output end of the single chip microcomputer while a high-voltage end of the same is connected with an anode of a power source, a grounding end of the electronic potentiometer is connected with the ground while a sliding end of the same is connected with a positive input end of the optical coupler, a negative input end of the optical coupler is grounded while a positive output end of the same is connected with a base electrode of the NPN-type triode Q1, the base electrode of the NPN-type triode Q1 is connected with the anode of the power source through a first resistor R1, a negative output end of the optical coupler is connected with an emitting electrode of the NPN-type triode Q1 through a second resistor R2, the emitting electrode of the NPN-type triode Q1 is connected with an input end of the single chip microcomputer, and the negative output end of the optical coupler is grounded. The intelligent load power adjusting circuit has the advantage that output power of corresponding gear positions is enabled to be maintained to be preset values stably.
Description
Technical field
The utility model relates to a kind of lithium ion cell charging circuit, is particularly applicable to the lithium ion battery Intelligent constant flow charging circuit of portable electric appts.
Background technology
Bearing power regulating circuit has purposes widely in various electronic and electrical equipments, it has been mainly used in using electric loading (as motor, heating resistor etc.) adjustment of power, make bearing power stable maintenance in predetermined value, and can make as required bearing power be set in each gear value, therefore often need bearing power regulating circuit to there is adjustable gear many, it is high that gear is adjusted precision, corresponding gear output power energy stable maintenance is in predetermined value, circuit design is simple, the advantage of strong anti-interference performance, only have in a word the high and circuit design of intelligent degree bearing power regulating circuit simple and working stability could adapt to application demand.
Bearing power regulating circuit of the prior art be take Power Regulation integrated circuit conventionally as core, coordinate discrete component (as controllable silicon) to realize power adjustments, but conventionally Power Regulation IC interior forms by controllable frequency divider, multiplexing gate output circuit and from clear circuit etc., its core that realizes power adjustments is controllable frequency division, because the restriction of frequency division precision must cause the adjustable gear of bearing power regulating circuit power limited, particularly owing to lacking, output power detects, feedback mechanism, and corresponding gear output power is difficult to stable maintenance in predetermined value.
Utility model content
For the problems referred to above and deficiency, technical problem to be solved in the utility model is: how to provide a kind of circuit design simple, strong anti-interference performance, adjustable gear is many, it is high that gear is adjusted precision, and have Intelligence Feedback mechanism and make corresponding gear output power energy stable maintenance at the bearing power regulating circuit of predetermined value.
In order to address the above problem, the utility model has adopted following technical scheme.
A bearing power intelligence regulating circuit, is characterized in that: comprise single-chip microcomputer, electronic potentiometer, photo-coupler and NPN type triode Q1, the controlled end of described electronic potentiometer and the output terminal of single-chip microcomputer be connected, the high voltage end of electronic potentiometer is connected with positive source, the earth terminal of electronic potentiometer is connected to the ground, the sliding end of electronic potentiometer is connected with the positive input terminal of photo-coupler, the negative input end ground connection of photo-coupler, between the positive input terminal of photo-coupler and negative input end, be connected to the first capacitor C 1, the positive output end of photo-coupler is connected with the base stage of NPN type triode Q1, the base stage of NPN type triode Q1 is connected with positive source by the first resistance R 1, the negative output terminal of photo-coupler is connected with the emitter of NPN type triode Q1 by the second resistance R 2, the emitter of NPN type triode Q1 is connected with the input end of single-chip microcomputer, the negative output terminal ground connection of photo-coupler, between the positive output end of photo-coupler and negative output terminal, be connected to the second capacitor C 2, the collector of NPN type triode Q1 is connected with one end of power termination, the other end of power termination is connected with positive source, analog-to-digital conversion module is contained in described single-chip microcomputer inside.
Wherein, described electronic potentiometer adopts X9C103, and described photo-coupler adopts PC817, and the resistance of described the second resistance R 2 is 0.01 ohm.
Compared to existing technology, the utlity model has following advantage:
Monolithic function of the present utility model is controlled electronic potentiometer and is revised its resistance, to control the photocurrent that flows through light emitting diode in photo-coupler, and then the conducting degree of phototriode in control photo-coupler, the conducting degree of phototriode has determined the base current of Q1, control the most at last the electric current that flows through load, it is point-earth that load current is got back to potential minimum through the second resistance R 2, and form small voltage difference, this voltage is sent to single-chip microcomputer sampling, single-chip microcomputer just can calculate the power of present load, if find that power is less than normal or bigger than normal, single-chip microcomputer regulates the resistance of electronic potentiometer can make real output get back to preset value according to actual conditions, therefore the utlity model has and can make corresponding gear output power energy stable maintenance in the advantage of predetermined value.
Accompanying drawing explanation
Fig. 1 is the utility model circuit theory diagrams.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, a kind of bearing power intelligence regulating circuit, comprises single-chip microcomputer 1, electronic potentiometer 2, photo-coupler 3 and NPN type triode Q1.
Described electronic potentiometer 2 adopts the 100 rank digital regulation resistances that model is X9C103, this electronic potentiometer has following pin: " increase input pin ", " lifting input pin ", " hot end VH ", " cold end VL ", " hold VSS ", " sliding end VW " and " sheet selects input end ", wherein " increase input pin ", " lifting input pin " is two controlled ends of electronic potentiometer.Photo-coupler 3 adopts the linear light lotus root that model is PC817, and single-chip microcomputer model is MSP430G2553.Physical circuit annexation is as follows:
Two controlled ends of electronic potentiometer 2 all with the output terminal of single-chip microcomputer 1 be connected, the high voltage end VH of electronic potentiometer 2 is connected with positive source VDD, the earth terminal VSS of electronic potentiometer 2 is connected to the ground, the sliding end VW of electronic potentiometer 2 is connected with the positive input terminal of photo-coupler 3, the negative input end ground connection of photo-coupler 3, between the positive input terminal of photo-coupler 3 (that is to say the anode of photo-coupler interior light emitting diodes) and negative input end (that is to say the negative electrode of photo-coupler interior light emitting diodes), be connected to the first capacitor C 1, the positive output end of photo-coupler 3 (that is to say the collector of the inner phototriode of photo-coupler) is connected with the base stage of NPN type triode Q1, the base stage of NPN type triode Q1 is connected with positive source VDD by the first resistance R 1, the negative output terminal of photo-coupler 3 (that is to say the emitter of the inner phototriode of photo-coupler) is connected with the emitter of NPN type triode Q1 by the second resistance R 2, the emitter of NPN type triode Q1 is connected with the input end of single-chip microcomputer 1, the negative output terminal ground connection of photo-coupler 3, between the positive output end of photo-coupler 3 and negative output terminal, be connected to the second capacitor C 2, the collector of NPN type triode Q1 is connected with one end of power termination, the other end of power termination is connected with positive source VDD.
The course of work of the present utility model is as follows:
Monolithic function is controlled electronic potentiometer and is revised its resistance, concrete, increasing input pin is triggered by negative edge, the negative edge occurring on this pin will make sliding end VW increase or the direction that reduces moves towards internal counter, and the logic level on lifting input pin is being controlled the direction that electronic potentiometer sliding end VW moves; The signal that increases input pin and lifting input pin provides by single-chip microcomputer, so single-chip microcomputer can be realized the control modification to electronic potentiometer resistance.
And then single-chip microcomputer can be realized: base current-final electric current that flows through load of controlling of controlling conducting degree-control Q1 of phototriode in the photocurrent-control photo-coupler that flows through light emitting diode in photo-coupler, it is point-earth that load current is got back to potential minimum through the second resistance R 2, and form small voltage difference, this voltage is sent to single-chip microcomputer sampling (the input port sampling by single-chip microcomputer is converted to digital quantity by the inner analog-to-digital conversion module of single-chip microcomputer by this magnitude of voltage after entering), single-chip microcomputer just can calculate the power of present load, if find that power is less than normal or bigger than normal, single-chip microcomputer regulates the resistance of electronic potentiometer can make real output get back to preset value according to actual conditions.
In addition, it is also to control by chip microcontroller that gear of the present utility model regulates, and concrete, driving switch is connected with the input port of single-chip microcomputer, and principle of work is shown in foregoing description, does not repeat them here.
Finally explanation is, above embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical solution of the utility model, and not departing from aim and the scope of technical solutions of the utility model, it all should be encompassed in the middle of claim scope of the present utility model.
Claims (3)
1. a bearing power intelligence regulating circuit, is characterized in that: comprise single-chip microcomputer (1), electronic potentiometer (2), photo-coupler (3) and NPN type triode Q1, the output terminal of the controlled end of described electronic potentiometer (2) and single-chip microcomputer (1) be connected, the high voltage end of electronic potentiometer (2) is connected with positive source, the earth terminal of electronic potentiometer (2) is connected to the ground, the sliding end of electronic potentiometer (2) is connected with the positive input terminal of photo-coupler (3), the negative input end ground connection of photo-coupler (3), between the positive input terminal of photo-coupler (3) and negative input end, be connected to the first capacitor C 1, the positive output end of photo-coupler (3) is connected with the base stage of NPN type triode Q1, the base stage of NPN type triode Q1 is connected with positive source by the first resistance R 1, the negative output terminal of photo-coupler (3) is connected with the emitter of NPN type triode Q1 by the second resistance R 2, the emitter of NPN type triode Q1 is connected with the input end of single-chip microcomputer (1), the negative output terminal ground connection of photo-coupler (3), between the positive output end of photo-coupler (3) and negative output terminal, be connected to the second capacitor C 2, the collector of NPN type triode Q1 is connected with one end of power termination, the other end of power termination is connected with positive source, analog-to-digital conversion module is contained in described single-chip microcomputer (1) inside.
2. a kind of bearing power intelligence regulating circuit according to claim 1, is characterized in that, described electronic potentiometer (2) adopts X9C103, and described photo-coupler (3) adopts PC817.
3. according to a kind of bearing power intelligence regulating circuit described in claim 1 or 2, it is characterized in that, the resistance of described the second resistance R 2 is 0.01 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420003949.2U CN203849636U (en) | 2014-01-03 | 2014-01-03 | Intelligent load power adjusting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420003949.2U CN203849636U (en) | 2014-01-03 | 2014-01-03 | Intelligent load power adjusting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203849636U true CN203849636U (en) | 2014-09-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420003949.2U Expired - Fee Related CN203849636U (en) | 2014-01-03 | 2014-01-03 | Intelligent load power adjusting circuit |
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| Country | Link |
|---|---|
| CN (1) | CN203849636U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106896854A (en) * | 2015-12-18 | 2017-06-27 | 中国科学院沈阳自动化研究所 | A kind of online dynamic continuously adjustabe out-put supply of high accuracy |
-
2014
- 2014-01-03 CN CN201420003949.2U patent/CN203849636U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106896854A (en) * | 2015-12-18 | 2017-06-27 | 中国科学院沈阳自动化研究所 | A kind of online dynamic continuously adjustabe out-put supply of high accuracy |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 Termination date: 20160103 |