CN207266340U - Without stroboscopic LED light adjusting circuits - Google Patents
Without stroboscopic LED light adjusting circuits Download PDFInfo
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- CN207266340U CN207266340U CN201721052562.6U CN201721052562U CN207266340U CN 207266340 U CN207266340 U CN 207266340U CN 201721052562 U CN201721052562 U CN 201721052562U CN 207266340 U CN207266340 U CN 207266340U
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Abstract
The utility model discloses no stroboscopic LED light adjusting circuits, it includes power supply module, PWM control modules, on-off circuit, LED light, integrating circuit and pwm signal end, and the output terminal of the power supply module is connected with the input terminal of the PWM control modules and the input terminal of on-off circuit respectively；The pwm signal end is connected by integrating circuit with the input terminal of the PWM control modules, and pwm signal is inputted to PWM control modules；The output terminal of the PWM control modules and the input terminal of on-off circuit connect, and controlling switch circuit is cut-off, and the output terminal of the on-off circuit is connected with the LED light.Make the linear smoothing for the signal that pwm signal end inputted to PWM control modules by integrating circuit so that dim signal is finer and smoother, and dims when reaching 0 7%, and product is not in that lamp dodges or cisco unity malfunction phenomenon.
Description
Technical field
LED light regulating technologies field is the utility model is related to, more particularly to without stroboscopic LED light adjusting circuits.
Background technology
Light modulation depth is light modulation ratio when being transferred to minimum.
Since human consciousness is to every possible means energy-saving and emission-reduction are had to, after the pressing issues that atmospheric warming could be solved, such as
What reduce electric consumption on lighting just as one it is important the problem of put on the agenda come.Because electric consumption on lighting accounts for 20%. good fortunes of total energy consumption
Energy-efficient LED occurred easily, and LED is in itself than more than 5 times of incandescent streetlamp energy-saving, than also energy saving one times of fluorescent lamp, energy-saving lamp
Left and right, it is also mercurous unlike fluorescent lamp, energy-saving lamp.If can also be using light modulation come energy saving, then be also very important
Energy saving means.But the past, all light sources were all not easily accomplished light modulation very much, and easily dimmed the advantages of exactly the one of LED very big,
The brightness of LED light can be adjusted by light modulation, while can be energy saving.
Existing market has the LED product of dimming function, and light modulation depth is unable to reach 1-10%. reasons and reaches 0- for light modulation
When 7%, lamp sudden strain of a muscle or cisco unity malfunction phenomenon occurs in product.
Utility model content
In order to solve the above-mentioned technical problem, the purpose of this utility model is to provide no stroboscopic LED light adjusting circuits.
Technical solution is used by the utility model：Without stroboscopic LED light adjusting circuits, it includes power supply module, PWM controls
Module, on-off circuit, LED light, integrating circuit and pwm signal end, the output terminal of the power supply module are controlled with the PWM respectively
The input terminal connection of the input terminal and on-off circuit of molding block；The pwm signal end is controlled by integrating circuit and the PWM
The input terminal connection of module, pwm signal is inputted to PWM control modules；The output terminal and on-off circuit of the PWM control modules
Input terminal connection, controlling switch circuit cut-offs, and the output terminal of the on-off circuit is connected with the LED light.
Further, the on-off circuit includes the first metal-oxide-semiconductor, the grid of first metal-oxide-semiconductor and the PWM control modules
Output terminal connection, its drain electrode is connected with the positive output end of the power supply module, its source electrode is connected with the anode of the LED light,
The anode of the LED light is connected with the negative output terminal of the power supply module.
Further, the grid of first metal-oxide-semiconductor is further connected with zener diode, the cathode and PWM of the zener diode
The ground terminal connection of control module, the anode of the zener diode are connected with the grid of first metal-oxide-semiconductor.
Further, first metal-oxide-semiconductor is PMOS tube.
Further, the PWM control modules include RT8458PWM controllers and its peripheral circuit.
Further, it is connected with compensation circuit between the VC compensating ends of the RT8458PWM controllers and GND ends.
Further, the compensation circuit includes first resistor, the first capacitance and the second capacitance, the first resistor and institute
The second capacitance is stated to be series between VC compensating ends and the GND ends of the RT8458PWM controllers, one end of first capacitance with
The VC compensating ends connection of the RT8458PWM controllers, the other end are connected with the GND ends of the RT8458PWM controllers.
Further, it further includes filter rectifier, and the output terminal of the on-off circuit passes through filter rectifier and institute
State the input terminal connection of LED light.
Further, the integrating circuit includes 7812 voltage stabilizing chips, second resistance, 3rd resistor, the 4th resistance, the 5th electricity
Resistance, the 3rd capacitance, the 4th capacitance and the 5th capacitance, the VIN ends of 7812 voltage stabilizing chip and the output of the power supply module
End connection, its Vout end pass sequentially through second resistance, 3rd resistor, the 4th resistance, the 5th resistance and the PWM control modules
Input terminal connects, and one end of the 5th resistance is connected by the 5th capacitance with the GND ends of 7812 voltage stabilizing chip, its
The other end is connected by the 4th capacitance with the GND ends of 7812 voltage stabilizing chip, the 3rd resistor and the 4th resistance it
Between be connected by the 3rd capacitance with the GND ends of 7812 voltage stabilizing chip, pwm signal end by second resistance with it is described
The Vout ends connection of 7812 voltage stabilizing chips.
The beneficial effects of the utility model are：Pwm signal end is set to input to the signal of PWM control modules by integrating circuit
Linear smoothing so that dim signal is finer and smoother, and dim reach 0-7% when, product be not in lamp dodge or cannot
Work normally phenomenon.
Brief description of the drawings
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings：
Fig. 1 is the high-level schematic functional block diagram of utility model；
Fig. 2A and Fig. 2 B are the circuit diagrams of one specific embodiment of the utility model.
Embodiment
It should be noted that in the case where there is no conflict, the feature in embodiment and embodiment in the application can phase
Mutually combination.
As shown in Figure 1, without stroboscopic LED light adjusting circuits, it includes power supply module, PWM control modules, on-off circuit, LED
Lamp, integrating circuit and pwm signal end, the output terminal of the power supply module respectively with the input terminals of the PWM control modules with
And the input terminal connection of on-off circuit；The pwm signal end is connected by integrating circuit and the input terminal of the PWM control modules
Connect, pwm signal is inputted to PWM control modules；The output terminal of the PWM control modules and the input terminal of on-off circuit connect,
Controlling switch circuit is cut-off, and the output terminal of the on-off circuit is connected with the LED light.Further, it is whole to further include filtering for it
Current circuit, the output terminal of the on-off circuit are connected by filter rectifier with the input terminal of the LED light.By integrating electricity
Road makes the linear smoothing for the signal that pwm signal end inputted to PWM control modules so that dim signal is finer and smoother, and dims
When reaching 0-7%, product is not in lamp sudden strain of a muscle or cisco unity malfunction phenomenon.
As shown in Fig. 2, wherein Fig. 2 includes a specific implementations of Fig. 2A and Fig. 2 B it illustrates no stroboscopic LED light adjusting circuits
The circuit diagram of example, illustrates below for each Important Circuit.
Wherein PWM control modules include RT8458PWM controllers U2 and its peripheral circuit.The RT8458PWM controllers
VC compensating ends and GND ends between be connected with compensation circuit.The compensation circuit include first resistor R24, the first capacitance C5 with
And second capacitance C10, the first resistor R24 and the second capacitance C10 be series at the VC of the RT8458PWM controllers U2
Between compensating end and GND ends, one end of the first capacitance C10 is connected with the VC compensating ends of the RT8458PWM controllers U2,
The other end is connected with the GND ends of the RT8458PWM controllers U2.First resistor R24, the first capacitance C5 and the second capacitance
C10 composition light modulation compensated lines, according to different capacity, adjustment parameter, the requirement that light modulation depth can be made to reach 1%.
Wherein, on-off circuit includes the first metal-oxide-semiconductor Q2, and the first MOS pipes Q2 is PMOS tube in the present embodiment.First
The grid of metal-oxide-semiconductor Q2 is connected by current-limiting resistance R25 with 3 feet of the RT8458PWM controllers U2 in the PWM control modules,
Its drain electrode is connected with the positive output end of the power supply module, its source electrode is connected with the anode of the LED light, and the LED light is born
Pole is connected with the negative output terminal of the power supply module.RT8458PWM controller U2 output control signals control the first metal-oxide-semiconductor Q2's
Cut-off, realize light modulation.The grid of first metal-oxide-semiconductor Q2 is further connected with zener diode D7, the cathode and PWM of the zener diode D7
The GND ends connection of RT8458PWM controllers U2 in control module, the anode of the zener diode D7 and the first MOS
The grid connection of pipe Q2.When dim signal is in 1-10%, RT8458PWM controller U2 output waveform signals are weaker, then can shadow
The working status to the first metal-oxide-semiconductor Q2 is rung, so as to influence to export LED light in this case, it is abnormal work occur, by steady
Pressure diode D7 can make the grid voltage of the first metal-oxide-semiconductor Q2 be not less than 0.6V, and as dim signal 1-10%, Q2 elements still handle work
Make normally,
Wherein, the integrating circuit includes 7812 voltage stabilizing chip U5, second resistance R26,3rd resistor R28, the 4th resistance
R29, the 5th resistance R30, the 3rd capacitance C11, the 4th capacitance C12 and the 5th capacitance C13, the 7812 voltage stabilizing chip U2's
VIN ends are connected with the output terminal of the power supply module, its Vout end passes sequentially through second resistance R26,3rd resistor R28, the 4th
Resistance R29, the 5th resistance R30 are connected with the VCC feet of the RT8458PWM controllers U2 in the PWM control modules, and the described 5th
One end of resistance R30 is connected by the 5th capacitance C13 with the GND ends of the 7812 voltage stabilizing chip U5, its other end passes through
4th capacitance is connected with the GND ends of 7812 voltage stabilizing chip, is led between the 3rd resistor R28 and the 4th resistance R29
The GND ends that the 3rd capacitance C11 is crossed with the 7812 voltage stabilizing chip U5 are connected, and pwm signal end passes through second resistance R26 and institute
State the Vout ends connection of 7812 voltage stabilizing chip U5.After 7812 voltage stabilizing chip U provide voltage, when pwm signal end inputs dim signal
When, through second resistance R26,3rd resistor R28, the 4th resistance R29, the 5th resistance R30, the 3rd capacitance C11, the 4th capacitance C12
And the 5th capacitance C13 carry out partial pressure and integration, the linear smoothing voltage of 0-1.3V is provided to RT8458PWM controllers U2, is made
Dim signal is finer and smoother, so that reach 1-100% light modulations, and without stroboscopic phenomenon.
Above is the preferable of the utility model is implemented to be illustrated, but the utility model is created and is not limited to institute
State embodiment, those skilled in the art can also make a variety of etc. on the premise of without prejudice to the utility model spirit
With deformation or replace, these equivalent deformations or replacement are all contained in the application claim limited range.
Claims (9)
1. without stroboscopic LED light adjusting circuits, it is characterised in that：It include power supply module, PWM control modules, on-off circuit, LED light,
Integrating circuit and pwm signal end,
The output terminal of the power supply module respectively with the input terminals of the PWM control modules and
The input terminal connection of on-off circuit；
The pwm signal end is connected by integrating circuit with the input terminal of the PWM control modules, and pwm signal is inputted to PWM
Control module；
The output terminal of the PWM control modules and the input terminal of on-off circuit connect, and controlling switch circuit is cut-off, the switch
The output terminal of circuit is connected with the LED light.
2. no stroboscopic LED light adjusting circuits according to claim 1, it is characterised in that：The on-off circuit includes the first MOS
Pipe, the grid of first metal-oxide-semiconductor are connected with the output terminal of the PWM control modules, it drains with the power supply module just
Output terminal connects, its source electrode is connected with the anode of the LED light, the negative output of the anode of the LED light and the power supply module
End connection.
3. no stroboscopic LED light adjusting circuits according to claim 2, it is characterised in that：The grid of first metal-oxide-semiconductor also connects
There is zener diode, the cathode of the zener diode is connected with the ground terminal of PWM control modules, the anode of the zener diode
It is connected with the grid of first metal-oxide-semiconductor.
4. according to Claims 2 or 3 any one of them without stroboscopic LED light adjusting circuits, it is characterised in that：First metal-oxide-semiconductor
For PMOS tube.
5. no stroboscopic LED light adjusting circuits according to any one of claims 1 to 3, it is characterised in that：The PWM controls mould
Block includes RT8458PWM controllers and its peripheral circuit.
6. no stroboscopic LED light adjusting circuits according to claim 5, it is characterised in that：The VC of the RT8458PWM controllers
Compensation circuit is connected between compensating end and GND ends.
7. no stroboscopic LED light adjusting circuits according to claim 6, it is characterised in that：The compensation circuit includes the first electricity
Resistance, the first capacitance and the second capacitance, the first resistor are series at the RT8458PWM controllers with second capacitance
Between VC compensating ends and GND ends, one end of first capacitance is connected with the VC compensating ends of the RT8458PWM controllers, separately
One end is connected with the GND ends of the RT8458PWM controllers.
8. no stroboscopic LED light adjusting circuits according to claim 7, it is characterised in that：It further includes filter rectifier, institute
The output terminal for stating on-off circuit is connected by filter rectifier with the input terminal of the LED light.
9. no stroboscopic LED light adjusting circuits according to claim 1, it is characterised in that：It is steady that the integrating circuit includes 7812
Chip, second resistance, 3rd resistor, the 4th resistance, the 5th resistance, the 3rd capacitance, the 4th capacitance and the 5th capacitance are pressed, it is described
The VIN ends of 7812 voltage stabilizing chips are connected with the output terminal of the power supply module, its Vout end passes sequentially through second resistance, the 3rd electricity
Resistance, the 4th resistance, the 5th resistance are connected with the input terminal of the PWM control modules, and one end of the 5th resistance passes through described
5th capacitance is connected with the GND ends of 7812 voltage stabilizing chip, its other end passes through the 4th capacitance and 7812 voltage stabilizing
The GND ends connection of chip, passes through the 3rd capacitance and 7812 voltage stabilizing chip between the 3rd resistor and the 4th resistance
GND ends connection, pwm signal end is connected by second resistance with the Vout ends of 7812 voltage stabilizing chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721052562.6U CN207266340U (en) | 2017-08-21 | 2017-08-21 | Without stroboscopic LED light adjusting circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721052562.6U CN207266340U (en) | 2017-08-21 | 2017-08-21 | Without stroboscopic LED light adjusting circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207266340U true CN207266340U (en) | 2018-04-20 |
Family
ID=61925803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721052562.6U Active CN207266340U (en) | 2017-08-21 | 2017-08-21 | Without stroboscopic LED light adjusting circuits |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207266340U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107454717A (en) * | 2017-08-21 | 2017-12-08 | 深圳民爆光电技术有限公司 | Without stroboscopic LED light adjusting circuits |
-
2017
- 2017-08-21 CN CN201721052562.6U patent/CN207266340U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107454717A (en) * | 2017-08-21 | 2017-12-08 | 深圳民爆光电技术有限公司 | Without stroboscopic LED light adjusting circuits |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 518000 Second, Third, Fourth and Fifth Floors of Runheng Industrial Plant, Fuyong Street, Baoan District, Shenzhen City, Guangdong Province (West Side of Fuyuan Road) Patentee after: Shenzhen Civil Explosion Photoelectric Co., Ltd. Address before: 518000 Second, Third, Fourth and Fifth Floors of Runheng Industrial Plant, Fuyong Street, Baoan District, Shenzhen City, Guangdong Province (West Side of Fuyuan Road) Patentee before: UP-SHINE LIGHTING CO., LIMITED |