CN102520758A - Automatic current control circuit and circuit current control method - Google Patents
Automatic current control circuit and circuit current control method Download PDFInfo
- Publication number
- CN102520758A CN102520758A CN2011104180531A CN201110418053A CN102520758A CN 102520758 A CN102520758 A CN 102520758A CN 2011104180531 A CN2011104180531 A CN 2011104180531A CN 201110418053 A CN201110418053 A CN 201110418053A CN 102520758 A CN102520758 A CN 102520758A
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- circuit
- signal receiving
- current
- light emitting
- emitting diode
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Abstract
The invention relates to a circuit, in particular to an automatic current control circuit, which comprises an IC (integrated circuit), a signal receiving circuit and a variable resistor. A variable end of the variable resistor is connected with an input end of the signal receiving circuit, and an output end of the signal receiving circuit is connected with the IC. Capacity of the variable resistor can be effectively controlled so as to control light output of a light emitting diode, and input current of the IC is automatically controlled through a photosensitive transistor. The automatic current control circuit is simple in structure, scientific in design, flexible in control, optimally effective and delay-free.
Description
Technical field
The present invention relates to a kind of current control circuit and control circuit method of current.
Background technology
Along with the development and the technical progress of society, the variation of market environment, make many kinds, small batch produce in Universal Problems more serious, require automatic technology to its breadth and depth development, make its each correlation technique high integrity, bring into play whole best efficiency.Do not have signal receiving circuit in traditional electric current automatic control circuit, the control effect is insensitive, does not reach optimum efficiency, also has sometimes and incurs loss through delay so that occur peril.
Summary of the invention
The object of the invention is exactly for a kind of electric current automatic control circuit is provided, and is characterized in simple in structure, design science, and control is sensitive, and best results is not incured loss through delay.
Technical scheme provided by the invention is:
The electric current automatic control circuit comprises IC, also includes signal receiving circuit and variable resistor, and variable-resistance convertible tip connects the signal receiving circuit input end, and the output terminal of signal receiving circuit connects IC.
Concrete, said signal receiving circuit comprises light emitting diode and phototriode, light emitting diode and phototriode close on placement.
Concrete, the positive pole of light emitting diode connects variable-resistance convertible tip, minus earth; The collector of phototriode connects IC, grounded emitter.
Said control circuit method of current is through the size of current of the signal receiving circuit control integrated circuit IC input end that links to each other with variable resistor.
The control circuit method of current, the size of current of the luminous quantity control phototriode through the light emitting diode that links to each other with variable resistor, thereby the size of current of the input end of control integrated circuit IC.
Thereby the present invention can effectively control the luminous quantity of variable-resistance size control light emitting diode, reaches the purpose of the input current of automatic control integrated circuit through phototriode.
Description of drawings
Fig. 1 is an electrical block diagram of the present invention.
Embodiment
The electric current automatic control circuit comprises IC, signal receiving circuit and variable resistor.Variable-resistance convertible tip connects the signal receiving circuit input end, and the output terminal of signal receiving circuit connects IC.
Signal receiving circuit comprises light emitting diode and phototriode, and light emitting diode and phototriode close on placement.The positive pole of light emitting diode connects variable-resistance convertible tip, minus earth.The collector of phototriode connects IC, grounded emitter.
The control circuit method of current, the size of current of the luminous quantity control phototriode through the light emitting diode that links to each other with variable resistor, thereby the size of current of the input end of control integrated circuit IC.
Thereby this electric current automatic control circuit can effectively be controlled the luminous quantity of variable-resistance size control light emitting diode, reaches the purpose of the input current of automatic control integrated circuit through the effect of phototriode.
When the PN junction that phototriode has a light sensitive characteristic receives the optical radiation of light emitting diode, form photocurrent, consequent photocurrent gets into emitter by base stage, thereby in collector loop, obtains a marking current, and this signal has very high sensitivity.
Claims (5)
1. the electric current automatic control circuit comprises IC, it is characterized in that, also includes signal receiving circuit and variable resistor, and variable-resistance convertible tip connects the signal receiving circuit input end, and the output terminal of signal receiving circuit connects IC.
2. according to the said electric current automatic control circuit of claim 1, it is characterized in that said signal receiving circuit comprises light emitting diode and phototriode, light emitting diode and phototriode close on placement.
3. according to the said electric current automatic control circuit of claim 2, it is characterized in that the positive pole of light emitting diode connects variable-resistance convertible tip, minus earth; The collector of phototriode connects IC, grounded emitter.
4. the control circuit method of current is characterized in that, through the size of current of the signal receiving circuit control integrated circuit IC input end that links to each other with variable resistor.
5. according to the said control circuit method of current of claim 4, it is characterized in that the size of current of the luminous quantity control phototriode through the light emitting diode that links to each other with variable resistor, thereby the size of current of the input end of control integrated circuit IC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104180531A CN102520758A (en) | 2011-12-15 | 2011-12-15 | Automatic current control circuit and circuit current control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104180531A CN102520758A (en) | 2011-12-15 | 2011-12-15 | Automatic current control circuit and circuit current control method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102520758A true CN102520758A (en) | 2012-06-27 |
Family
ID=46291710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011104180531A Pending CN102520758A (en) | 2011-12-15 | 2011-12-15 | Automatic current control circuit and circuit current control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102520758A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH047382A (en) * | 1990-04-25 | 1992-01-10 | Sunstar Eng Inc | Adhesive for use i lining of water pipe |
| JPH09207382A (en) * | 1996-02-07 | 1997-08-12 | Ricoh Co Ltd | Image forming apparatus |
| US20100277081A1 (en) * | 2009-04-30 | 2010-11-04 | Shenzhen Great Power Enterprise Co., Limited | Clock brightness control circuit |
| CN202035185U (en) * | 2011-03-15 | 2011-11-09 | 深圳创维－Rgb电子有限公司 | Light-emitting diode (LED) current feedback control circuit and television |
| CN202351729U (en) * | 2011-12-15 | 2012-07-25 | 濮阳三友电器有限公司 | Automatic current control circuit |
-
2011
- 2011-12-15 CN CN2011104180531A patent/CN102520758A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH047382A (en) * | 1990-04-25 | 1992-01-10 | Sunstar Eng Inc | Adhesive for use i lining of water pipe |
| JPH09207382A (en) * | 1996-02-07 | 1997-08-12 | Ricoh Co Ltd | Image forming apparatus |
| US20100277081A1 (en) * | 2009-04-30 | 2010-11-04 | Shenzhen Great Power Enterprise Co., Limited | Clock brightness control circuit |
| CN202035185U (en) * | 2011-03-15 | 2011-11-09 | 深圳创维－Rgb电子有限公司 | Light-emitting diode (LED) current feedback control circuit and television |
| CN202351729U (en) * | 2011-12-15 | 2012-07-25 | 濮阳三友电器有限公司 | Automatic current control circuit |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120627 |