CN205249580U - Light modulation control circuit with fan and shutoff function - Google Patents
Light modulation control circuit with fan and shutoff function Download PDFInfo
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- CN205249580U CN205249580U CN201521081018.5U CN201521081018U CN205249580U CN 205249580 U CN205249580 U CN 205249580U CN 201521081018 U CN201521081018 U CN 201521081018U CN 205249580 U CN205249580 U CN 205249580U
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Abstract
The utility model discloses a light modulation control circuit with fan and shutoff function, including LED constant current source, PWM reverse circuit, dimmer circuit, switch circuit, fan speed adjustment circuit, PWM signal device, take the LED lamps and lanterns of fan, the constant current source is connected with fan speed adjustment circuit, dimmer circuit, switch circuit respectively, again with take fan LED lamps and lanterns series connection, the reverse circuit connection of fan speed adjustment circuit, dimmer circuit, switch circuit and PWM wherein, the reverse circuit other end of PWM is connected with external PWM signal device. The utility model discloses a circuit structure is simple, and components and parts are very few, has reduced loss and cost, the reverse circuit of PWM wherein enables the PWM signal backward, makes fan wind speed and luminance follow, adjust luminance and open and close and to go on in step, dimmer circuit wherein, the linearity of adjusting luminance is stable, the proportion of adjusting luminance accuracy, opening and the pass circuit wherein, the loss is little, wherein fan speed adjustment circuit plus divider resistance realize the PWM speed governing.
Description
Technical field
The utility model relates to adjusting control circuit, is specifically related to a kind of adjusting control circuit that is provided with fan and turn-off function.
Background technology
LED lighting field constantly develops at present, along with the lifting of technology, the heat radiation of product, expensive, intelligent, power source life, energy saving become the development bottleneck in field, so launched a series of Development Schemes around this bottleneck, there are the various light modulation schemes that strengthen fin, make single-chip microcomputer and cut off input power and could realize Push And Release function etc., all unavoidably in high costs, wiring construction complexity, increase loss, light modulation scheme disunity.
Utility model content
Main purpose of the present utility model is to provide a kind of fan that rotating speed synchronizes with brightness and adjusting control circuit of turn-off function of being provided with. By using the general light-adjusting module such as PWM light modulating device and WIFI, DALI on market to be connected with the utility model, can realize rotation speed of the fan simultaneously and follow brightness adjustment speed and dispel the heat, realize accurate ratio light modulation, realize power supply Push And Release function and can many synchronous parallel connection uses of products.
The technical solution adopted in the utility model is: a kind of adjusting control circuit that is provided with fan and turn-off function, comprises LED constant-current source, PWM negater circuit, light adjusting circuit, on-off circuit, speed regulation circuit for fan, pwm signal device, LED light fixture with fan; Described constant-current source is connected with speed regulation circuit for fan, light adjusting circuit, on-off circuit respectively, be connected in series with band fan LED light fixture again, wherein speed regulation circuit for fan, light adjusting circuit, on-off circuit are connected with PWM negater circuit, and the PWM negater circuit other end is connected with extraneous pwm signal device.
Further, described PWM negater circuit comprises triode Q3, resistance R 4, resistance R 5, triode Q4, resistance R 7, resistance R 8; Described triode Q3 base stage is connected with resistance R 4, and colelctor electrode is connected with resistance R 5, and resistance R 5 other ends connect ground, and described triode Q4 base stage is connected with resistance R 7, and colelctor electrode is connected with resistance R 8, and resistance R 8 other ends connect ground.
Further, described light adjusting circuit comprises transport and placing device U2, resistance R 9; Described transport and placing device U2 is anodal to be connected with resistance R 9, and transport and placing device U2 output is connected with negative pole, and resistance R 9 other ends connect outside PWM dim signal.
Further, described on-off circuit comprises metal-oxide-semiconductor Q2, Zener diode ZD1, triode Q1, resistance R 1; Described metal-oxide-semiconductor Q2 drain electrode connects with LED light fixture series winding, metal-oxide-semiconductor Q2 source electrode is connected with ground, described resistance R 1 is connected with metal-oxide-semiconductor Q2 grid, resistance R 1 other end is connected with VCC, described Zener diode ZD1 anodal be connected the connection of metal-oxide-semiconductor Q2 grid, negative pole is connected with ground, and described triode Q1 colelctor electrode is connected with metal-oxide-semiconductor Q2 grid, emitter stage is connected with ground, base stage is connected with pwm signal.
Further, described speed regulation circuit for fan comprises step-down chip U3A, capacitor C 60, capacitor C 22, resistance R 10, resistance R 11, resistance R 12, resistance R 13, diode D20, inductance L 8A, described capacitor C 60 is in parallel with resistance R 13, described resistance R 10 is connected with resistance R 11, one end connects the FB feedback pin of step-down chip U3A, the other end is connected with reverse pwm signal, the anodal step-down chip U3A three-prong that connects of described diode D20, negative pole connects step-down chip U3A the second pin, described inductance L 8A one end connects step-down chip U3A the second pin, the other end is contact resistance R13 respectively, capacitor C 60, capacitor C 22 positive poles, described resistance R 12 one end connect respectively diode D20 positive pole, capacitor C 22 negative poles, the other end is contact resistance R10 respectively, resistance R 13, capacitor C 60.
Advantage of the present utility model:
Circuit structure of the present utility model is simple, and components and parts are considerably less, has reduced loss and cost; PWM negater circuit wherein can make pwm signal reverse, makes that fan wind speed is followed with brightness, light modulation and Push And Release can synchronize and carry out; Light adjusting circuit wherein, the light modulation linearity is stable, and light modulation is accurate in scale; Push And Release circuit wherein, loss is little; The additional divider resistance of speed regulation circuit for fan is wherein realized PWM speed governing.
Except object described above, feature and advantage, the utility model also has other object, feature and advantage. Below with reference to figure, the utility model is described in further detail.
Brief description of the drawings
The accompanying drawing that forms the application's a part is used to provide further understanding of the present utility model, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.
The structured flowchart of Fig. 1 adjusting control circuit that is provided with fan and turn-off function of the present utility model;
Fig. 2 PWM negater circuit of the present utility model schematic diagram;
Fig. 3 light adjusting circuit schematic diagram of the present utility model;
Fig. 4 on-off circuit schematic diagram of the present utility model;
Fig. 5 the utility model fan alignment circuit schematic diagram.
Detailed description of the invention
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated. Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Referring to figs. 1 to Fig. 5, a kind of adjusting control circuit that is provided with fan and turn-off function as shown in Figures 1 to 5, comprises LED constant-current source, PWM negater circuit, light adjusting circuit, on-off circuit, speed regulation circuit for fan, pwm signal device, LED light fixture with fan; Described constant-current source is connected with speed regulation circuit for fan, light adjusting circuit, on-off circuit respectively, be connected in series with band fan LED light fixture again, wherein speed regulation circuit for fan, light adjusting circuit, on-off circuit are connected with PWM negater circuit, and the PWM negater circuit other end is connected with extraneous pwm signal device.
Described PWM negater circuit comprises triode Q3, resistance R 4, resistance R 5, triode Q4, resistance R 7, resistance R 8; Described triode Q3 base stage is connected with resistance R 4, and colelctor electrode is connected with resistance R 5, and resistance R 5 other ends connect ground, and described Q4 base stage is connected with resistance R 7, colelctor electrode and being connected with resistance R 8, and resistance R 8 other ends connect ground.
Described light adjusting circuit comprises transport and placing device U2, resistance R 9; Described transport and placing device U2 is anodal to be connected with resistance R 9, and transport and placing device U2 output is connected with negative pole, and resistance R 9 other ends connect outside PWM dim signal.
Described on-off circuit comprises metal-oxide-semiconductor Q2, Zener diode ZD1, triode Q1, resistance R 1; Described metal-oxide-semiconductor Q2 drain electrode connects with LED light fixture series winding, metal-oxide-semiconductor Q2 source electrode is connected with ground, described resistance R 1 is connected with metal-oxide-semiconductor Q2 grid, resistance R 1 other end is connected with VCC, the anodal metal-oxide-semiconductor Q2 grid that connects of described Zener diode ZD1, negative pole is connected with ground, and described triode Q1 colelctor electrode is connected with metal-oxide-semiconductor Q2 grid, emitter stage is connected with ground, base stage is connected with pwm signal.
Described speed regulation circuit for fan comprises step-down chip U3A, capacitor C 60, capacitor C 22, resistance R 10, resistance R 11, resistance R 12, resistance R 13, diode D20, inductance L 8A, described capacitor C 60 is in parallel with resistance R 13, described resistance R 10 is connected with resistance R 11, one end connects the FB feedback pin of step-down chip U3A, the other end is connected with reverse pwm signal, the anodal step-down chip U3A three-prong that connects of described diode D20, negative pole connects step-down chip U3A the second pin, described inductance L 8A one end connects step-down chip U3A the second pin, the other end is contact resistance R13 respectively, capacitor C 60, capacitor C 22 positive poles, described resistance R 12 one end connect respectively diode D20 positive pole, capacitor C 22 negative poles, the other end is contact resistance R10 respectively, resistance R 13, capacitor C 60.
With reference to figure 2, PWM negater circuit operation principle as shown in Figure 2:
In the time that the 5V of pwm signal voltage enters resistance R 4, the B utmost point of triode Q3 is identical with E pole tension, and triode Q3 is obstructed, resistance R 5 ground connection, export reverse 0V, in the time that the 0V of pwm signal enters resistance R 4, the B utmost point and the E utmost point of triode Q3 have voltage difference, and are greater than 0.7V, triode Q3 conducting, resistance R 5 meets 5V, is output as reverse 5V, thereby makes pwm signal reverse in the time adjusting. Triode Q4, resistance R 7, resistance R 8 operation principles are identical therewith.
With reference to figure 3, light adjusting circuit operation principle as shown in Figure 3: (voltage follower circuit)
When pwm signal enters resistance R 9, carry out voltage follow by transport and placing device U2 transport and placing device pwm signal is strengthened, make pwm signal originally be not easy distortion, the REF of transport and placing device U2 output is connected with the current reference point of constant-current source, thereby change accurately output current, play light modulation effect.
With reference to figure 4, on-off circuit figure operation principle as shown in Figure 4:
When normal work, VCC voltage enters resistance R 1 step-down and enters metal-oxide-semiconductor Q2 grid, through Zener diode ZD1 voltage stabilizing, and driven MOS pipe Q2 conducting, LED light fixture is opened and is lit; In the time that reverse PWM enables, triode Q1 conducting, the voltage that resistance R 1 is entered to the mos gate utmost point is pulled to ground, and metal-oxide-semiconductor cuts, and LED light fixture turn-offs breath and goes out. Therefore in the time that reverse PWM enables, LED lamp is closed; In the time that reverse PWM does not enable, LED lamp is opened.
With reference to figure 5, speed regulation circuit for fan figure operation principle as shown in Figure 5:
Step-down chip U3A in this figure is the logical step-down chip in market, chip the 4th pin FB is feedback pin, can set output voltage size for fan power supply, in the utility model, in chip feedback pin series resistance R10, resistance R 11 to reverse PWM, in the time that reverse pwm signal enables dutycycle generation change, enter resistance R 10, resistance R 11 to feedback pin, thereby change the output voltage setting, rotation speed of the fan is changed, play adjustment fan speed wind-force is changed.
Circuit structure of the present utility model is simple, and components and parts are considerably less, has reduced loss and cost; PWM negater circuit wherein can make pwm signal reverse, makes that fan wind speed is followed with brightness, light modulation and Push And Release can synchronize and carry out; Light adjusting circuit wherein, the light modulation linearity is stable, and light modulation is accurate in scale; Push And Release circuit wherein, loss is little; The additional divider resistance of speed regulation circuit for fan is wherein realized PWM speed governing.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
Claims (5)
1. an adjusting control circuit that is provided with fan and turn-off function, is characterized in that, comprises LED
Constant-current source, PWM negater circuit, light adjusting circuit, on-off circuit, speed regulation circuit for fan, pwm signal device, LED light fixture with fan; Described constant-current source is connected with speed regulation circuit for fan, light adjusting circuit, on-off circuit respectively, be connected in series with band fan LED light fixture again, wherein speed regulation circuit for fan, light adjusting circuit, on-off circuit are connected with PWM negater circuit, and the PWM negater circuit other end is connected with extraneous pwm signal device.
2. the adjusting control circuit that is provided with fan and turn-off function according to claim 1, its spy
Levy and be, described PWM negater circuit comprises triode Q3, resistance R 4, resistance R 5, triode Q4, resistance R 7, resistance R 8; Described triode Q3 base stage is connected with resistance R 4, and colelctor electrode is connected with resistance R 5, and resistance R 5 other ends connect ground, and described triode Q4 base stage is connected with resistance R 7, and colelctor electrode is connected with resistance R 8, and resistance R 8 other ends connect ground.
3. the adjusting control circuit that is provided with fan and turn-off function according to claim 1, its spy
Levy and be, described light adjusting circuit comprises transport and placing device U2, resistance R 9; Described transport and placing device U2 is anodal to be connected with resistance R 9, and transport and placing device U2 output is connected with negative pole, and resistance R 9 other ends connect outside PWM dim signal.
4. the adjusting control circuit that is provided with fan and turn-off function according to claim 1, its spy
Levy and be, described on-off circuit comprises metal-oxide-semiconductor Q2, Zener diode ZD1, triode Q1, resistance R 1; Described metal-oxide-semiconductor Q2 drain electrode connects with LED light fixture series winding, metal-oxide-semiconductor Q2 source electrode is connected with ground, described resistance R 1 is connected with metal-oxide-semiconductor Q2 grid, resistance R 1 other end is connected with VCC, described Zener diode ZD1 anodal be connected the connection of metal-oxide-semiconductor Q2 grid, negative pole is connected with ground, and described triode Q1 colelctor electrode is connected with metal-oxide-semiconductor Q2 grid, emitter stage is connected with ground, base stage is connected with pwm signal.
5. according to the arbitrary described adjusting control circuit that is provided with fan and turn-off function of claim 1-4,
It is characterized in that, described speed regulation circuit for fan comprises step-down chip U3A, capacitor C 60, capacitor C 22, resistance R 10, resistance R 11, resistance R 12, resistance R 13, diode D20, inductance L 8A, described capacitor C 60 is in parallel with resistance R 13, described resistance R 10 is connected with resistance R 11, one end connects the FB feedback pin of step-down chip U3A, the other end is connected with reverse pwm signal, the anodal step-down chip U3A three-prong that connects of described diode D20, negative pole connects step-down chip U3A the second pin, described inductance L 8A one end connects step-down chip U3A the second pin, the other end is contact resistance R13 respectively, capacitor C 60, capacitor C 22 positive poles, described resistance R 12 one end connect respectively diode D20 positive pole, capacitor C 22 negative poles, the other end is contact resistance R10 respectively, resistance R 13, capacitor C 60.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521081018.5U CN205249580U (en) | 2015-12-23 | 2015-12-23 | Light modulation control circuit with fan and shutoff function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521081018.5U CN205249580U (en) | 2015-12-23 | 2015-12-23 | Light modulation control circuit with fan and shutoff function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205249580U true CN205249580U (en) | 2016-05-18 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521081018.5U Withdrawn - After Issue CN205249580U (en) | 2015-12-23 | 2015-12-23 | Light modulation control circuit with fan and shutoff function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205249580U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105407614A (en) * | 2015-12-23 | 2016-03-16 | 深圳市中孚光电科技有限公司 | Dimming control circuit provided with fan and having turn-off function |
| CN107035707A (en) * | 2017-04-27 | 2017-08-11 | 广州市荣峰电子有限公司 | A kind of guide-lighting fan control circuitrys of LED, control method and guide-lighting fan |
-
2015
- 2015-12-23 CN CN201521081018.5U patent/CN205249580U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105407614A (en) * | 2015-12-23 | 2016-03-16 | 深圳市中孚光电科技有限公司 | Dimming control circuit provided with fan and having turn-off function |
| CN107035707A (en) * | 2017-04-27 | 2017-08-11 | 广州市荣峰电子有限公司 | A kind of guide-lighting fan control circuitrys of LED, control method and guide-lighting fan |
| CN107035707B (en) * | 2017-04-27 | 2023-07-18 | 广州市荣峰电子有限公司 | LED light guide fan control circuit, control method and light guide fan |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160518 Effective date of abandoning: 20171229 |
|
| AV01 | Patent right actively abandoned |