CN202463682U - Multi-rotation speed control circuit of automobile front lighting light-dimming device - Google Patents
Multi-rotation speed control circuit of automobile front lighting light-dimming device Download PDFInfo
- Publication number
- CN202463682U CN202463682U CN2012201253418U CN201220125341U CN202463682U CN 202463682 U CN202463682 U CN 202463682U CN 2012201253418 U CN2012201253418 U CN 2012201253418U CN 201220125341 U CN201220125341 U CN 201220125341U CN 202463682 U CN202463682 U CN 202463682U
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- direct current
- comparator
- current motor
- voltage
- control circuit
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Abstract
The utility model provides a multi-rotation speed control circuit of an automobile front lighting light-dimming device. The multi-rotation speed control circuit comprises a power supply module, a comparator, a voltage comparing circuit and a direct current motor module, wherein the power supply module is connected with the comparator; the voltage comparing circuit is connected with an input end of the comparator; and variable resistors are connected between two output ends of the comparator and two input ends of the direct current motor module in series. According to the utility model, as a group of variable resistors are connected between the two output ends of the comparator and the two input ends of the direct current motor module in series, the voltages at the two ends of the direct current motor can be adjusted through voltage divisions of the variable resistors, so that the rotation speed of the direct current motor is adjusted; moreover, the voltages at the two ends of the direct current motor are adjusted to adapt to the direct current motors with different rated voltages.
Description
Technical field:
The utility model relates to the vehicular spare parts field, specifically is a kind of multiple rotating-speed control circuit of automobile front lit light modulating device.
Background technology:
Automobile front lit light modulating device generally is that to be placed on automobile front inner or outside, when vehicle-mounted changing, regulates the position of light through the catadioptre of regulating head lamp, avoids causing opposite the dazzling of chaufeur of sending a car.The control circuit of the automobile front lit light modulating device of prior art generally comprises power module, comparator, voltage comparator circuit and Direct Current Motor module, and power module comprises direct supply and current rectifying and wave filtering circuit, and voltage comparator circuit comprises voltage value circuit and control end; Two input ends of voltage value circuit and control termination comparator, two output termination Direct Current Motor modules of comparator are when control end voltage and voltage value circuit are obtained voltage when identical; Two mouths of comparator are just exported identical voltage signal; Connect two input ends of Direct Current Motor module, Direct Current Motor is not worked, when control end voltage is obtained voltage greater than voltage value circuit; Two one high and one low voltage signals of mouth output of comparator; Driving Direct Current Motor just changes, when control end voltage is obtained voltage less than voltage value circuit, and the voltage signal that two mouths outputs of comparator one low are high; Even be added in the voltage reversal at Direct Current Motor two ends, drive the Direct Current Motor counter-rotating.
The control circuit of this automobile front lit light modulating device, the voltage of comparator output is non-adjustable, can not regulate the rotating speed of Direct Current Motor; And; Because the voltage of output is non-adjustable, therefore the Direct Current Motor that rated voltage matches with the comparator output voltage can only be installed, commonality is not high.
The utility model content:
The main purpose of the utility model is, overcomes existing technological deficiency, provides a kind of and can regulate the Direct Current Motor rotating speed, and be fit to the multiple rotating-speed control circuit of automobile front lit light modulating device of the Direct Current Motor of different rated voltages.
The technical scheme that the utility model provides is: the utility model provides a kind of multiple rotating-speed control circuit of automobile front lit light modulating device; It comprises power module, comparator, voltage comparator circuit and Direct Current Motor module; Power module is connected with comparator; Voltage comparator circuit connects the input end of comparator, the variable resistance of all connecting between two mouths of said comparator and two input ends of Direct Current Motor module.
Adopt said structure, the utlity model has following advantage:
The utility model one group of variable resistance of between two input ends of two mouths of comparator and Direct Current Motor module, all connecting; Through variable-resistance dividing potential drop; The voltage at scalable Direct Current Motor module two ends; Thereby regulate the rotating speed of Direct Current Motor, and, the different Direct Current Motor of rated voltage adapted to through the voltage of regulating Direct Current Motor module two ends.
Description of drawings:
Accompanying drawing is the schematic circuit diagram of the multiple rotating-speed control circuit of the utility model automobile front lit light modulating device;
As shown in the figure: 1, power module, 2, voltage comparator circuit, 3, comparator, 4, the Direct Current Motor module.
The specific embodiment:
Below in conjunction with accompanying drawing and specific embodiment the utility model is elaborated:
As shown in the figure; The utility model provides a kind of multiple rotating-speed control circuit of automobile front lit light modulating device; It comprises power module 1, comparator 3, voltage comparator circuit 2 and Direct Current Motor module 4; Power module 1 is connected with comparator 3, and voltage comparator circuit 2 connects the input end of comparator 3, the variable resistance of all connecting between two mouths of said comparator 3 and two input ends of Direct Current Motor module 4.
Said power module 1 adopts the direct supply of 12V, is connected with comparator 3 after the rectifying and wave-filtering through diode D1, rectifier diode D2 and filter capacitor E1, and said voltage comparator circuit 2 is a circuit common; Comprise voltage value circuit and control input circuit; Voltage value circuit is composed in series by the first variable resistance VR1 and the first divider resistance R1, and the control input circuit is composed in series by the control end and the second divider resistance R2, and voltage value circuit is connected with the SET end with two input end: FB ends of comparator 3 respectively with the control input circuit; The model of the comparator 3 that adopts in the present embodiment is TDA3629; Two mouths of comparator 3 are OUT1 end and OUT2 end, behind the OUT1 end series connection the second adjustable resistance VR2, connect the end of Direct Current Motor MD; Behind OUT2 end series connection the 3rd variable resistance VR3, connect the other end of Direct Current Motor MD.Said Direct Current Motor MD also capacitor C of parallel connection 1 forms Direct Current Motor module 4.
The principle of work of the utility model is: the utility model variable resistance of between two input ends of two mouths of comparator 3 and Direct Current Motor module, all connecting; Through variable-resistance dividing potential drop; The voltage at scalable Direct Current Motor module two ends; Thereby regulate the rotating speed of Direct Current Motor, and, the different Direct Current Motor of rated voltage adapted to through the voltage of regulating Direct Current Motor module two ends.For example: the voltage of comparator output is 12V, and the rated voltage of Direct Current Motor is 8V, and this moment, the resistance of adjustable variable resistance was big or small, and the voltage that makes the Direct Current Motor two ends is 8V.
Claims (1)
1. the multiple rotating-speed control circuit of an automobile front lit light modulating device; It comprises power module (1), comparator (3), voltage comparator circuit (2) and Direct Current Motor module (4); Power module (1) is connected with comparator (3); Voltage comparator circuit (2) connects the input end of comparator (3), it is characterized in that: the variable resistance of all connecting between two mouths of said comparator (3) and two input ends of Direct Current Motor module (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201253418U CN202463682U (en) | 2012-03-29 | 2012-03-29 | Multi-rotation speed control circuit of automobile front lighting light-dimming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201253418U CN202463682U (en) | 2012-03-29 | 2012-03-29 | Multi-rotation speed control circuit of automobile front lighting light-dimming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202463682U true CN202463682U (en) | 2012-10-03 |
Family
ID=46911868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201253418U Expired - Lifetime CN202463682U (en) | 2012-03-29 | 2012-03-29 | Multi-rotation speed control circuit of automobile front lighting light-dimming device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202463682U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105882500A (en) * | 2016-04-20 | 2016-08-24 | 宁波江北博通电子有限公司 | Automobile light height regulating system |
| WO2020107478A1 (en) * | 2018-11-30 | 2020-06-04 | 北京比特大陆科技有限公司 | Voltage equalization circuit, voltage equalization method and device |
-
2012
- 2012-03-29 CN CN2012201253418U patent/CN202463682U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105882500A (en) * | 2016-04-20 | 2016-08-24 | 宁波江北博通电子有限公司 | Automobile light height regulating system |
| WO2020107478A1 (en) * | 2018-11-30 | 2020-06-04 | 北京比特大陆科技有限公司 | Voltage equalization circuit, voltage equalization method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 315194 Zhejiang city of Ningbo province Yinzhou District South Street chating um Village Patentee after: NINGBO JINGHUA ELECTRONICS TECHNOLOGY CO., LTD. Address before: 315191 Zhejiang city of Ningbo province Yinzhou District South Street chating Industrial Zone, Xiao Gaolu Patentee before: NINGBO JINGHUA ELECTRONICS TECHNOLOGY CO., LTD. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |