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CN210579375U - Voltage control device - Google Patents

Voltage control device Download PDF

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Publication number
CN210579375U
CN210579375U CN201921529414.8U CN201921529414U CN210579375U CN 210579375 U CN210579375 U CN 210579375U CN 201921529414 U CN201921529414 U CN 201921529414U CN 210579375 U CN210579375 U CN 210579375U
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China
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constant current
resistor
module
stroboscopic
light
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CN201921529414.8U
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Chinese (zh)
Inventor
方吉桐
吴乾炜
李照华
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Shenzhen Sunmoon Microelectronics Co Ltd
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Shenzhen Sunmoon Microelectronics Co Ltd
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Abstract

The utility model relates to a voltage control device, include: power module, constant current control module and stroboscopic light-emitting module disappears, wherein, the stroboscopic light-emitting module that disappears includes: the device comprises a light-emitting module and a stroboscopic eliminating module; the power supply module is respectively connected with the constant current control module and the stroboscopic-eliminating light-emitting module and is used for supplying power to the constant current control module and the stroboscopic-eliminating light-emitting module; the constant current control module is connected with the stroboscopic-eliminating light-emitting module in series or in parallel and is used for improving the power factor of the light-emitting module and keeping the power factor constant; the stroboscopic eliminating module is connected with the light-emitting module in series or in parallel and used for eliminating stroboscopic of the light-emitting module. By arranging the constant current control module and the stroboscopic elimination module in the light-emitting module, the power factor of the light-emitting module can be improved, and the stroboscopic reduction of the light-emitting module can be ensured, so that the visual experience of a human body is improved.

Description

Voltage control device
Technical Field
The utility model relates to an electronic circuit technical field especially relates to a voltage control device.
Background
With the development of social economy, more and more LED products appear in the life production of people, wherein, the linear full voltage constant current control power supply can ensure the constant current, guarantees the stable work of lamps and lanterns, has received extensive application.
However, the existing linear full-voltage constant-current control Power supply or finished lamps in the current market have serious defects, for example, the product does not have a hard index of high PF (Power Factor), or a light source emitted by an LED has serious stroboflash, eyestrain occurs or human eyes are damaged, so that the visual experience effect of a human body is poor.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide a voltage control device for solving the problem that the prior art has high PF or the light source emitted by the LED has severe stroboflash, causes eye fatigue or eye injury, and thus has poor visual experience.
In order to solve the above technical problem, there is provided a voltage control apparatus, comprising: power module, constant current control module and stroboscopic light-emitting module disappears, wherein, the stroboscopic light-emitting module that disappears includes: the device comprises a light-emitting module and a stroboscopic eliminating module;
the power supply module is respectively connected with the constant current control module and the stroboscopic-eliminating light-emitting module and is used for supplying power to the constant current control module and the stroboscopic-eliminating light-emitting module;
the constant current control module is connected with the stroboscopic-eliminating light-emitting module in series or in parallel and is used for improving the power factor of the light-emitting module and keeping the power factor constant;
the stroboscopic eliminating module is connected with the light-emitting module in series or in parallel and used for eliminating stroboscopic of the light-emitting module.
Optionally, the power supply module comprises: a first winding resistor FR1 and a first bridge rectifier DB 1;
one end of first wire winding resistance FR1 connects the commercial power wiring end, another termination of first wire winding resistance FR1 the alternating current pin 1 of first rectifier bridge heap DB1, the anodal pin 2 of first rectifier bridge heap DB1, exchange and draw 3, negative pole pin 4 and connect respectively the one end of constant current control module another wiring end and the ground connection of commercial power.
Optionally, the constant current control module includes: the constant current source circuit comprises a first constant current source 1, a second constant current source 2, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first diode D1, a second diode D2 and a first energy storage capacitor E1;
the VT end of the first constant current source 1 is connected to one ends of a third resistor R3 and a fourth resistor R4, respectively, the other end of the third resistor R3 is connected to the power supply module, the OUT end of the first constant current source 1, and the anode end of the first energy storage capacitor E1, respectively, and the other end of the fourth resistor is connected to the GND end of the first constant current source 1 and the stroboscopic light-emitting module, respectively;
the REXT end of the first constant current source 1 is connected to one end of the first resistor R1, and the other end of the first resistor R1 is connected to the GND end of the first constant current source 1, the other end of the fourth resistor R4, the stroboscopic light-emitting module and the first end of the second resistor R2;
the REXT end of the second constant current source 2 is connected to the second end of the second resistor R2, the OUT end of the second constant current source 2 is connected to the cathode end of the first diode D1, and the anode end of the first diode D1 is connected to the cathode end of the first energy-storing capacitor E1 and the cathode end of the second diode D2, respectively;
the GND terminal of the second constant current source 2 is connected to the first terminal of the second resistor R2, the other terminal of the first resistor R1, the other terminal of the fourth resistor R4, and the stroboscopic light-emitting module, respectively.
Optionally, the first constant current source 1 includes: a first amplifier INV1, a second amplifier INV2, a first field effect transistor M1, a second field effect transistor M2, a first constant current resistor R1 'and a second constant current resistor R2';
a positive phase input end of the first amplifier INV1 is the VT end of the first constant current source 1, an output end of the first amplifier INV1 is connected with the gate G of the first field effect transistor M1, the drain D of the first field effect transistor M1 is connected with the power supply VDD, the source S of the first field effect transistor M1 is respectively connected with one end of the second constant current resistor R2 'and the negative phase input end of the first amplifier INV1, and the other end of the second constant current resistor R2' is the GND end of the first constant current source 1;
an inverting input end of the second amplifier INV2 is connected to the drain D of the first field effect transistor M1, the power supply VDD, and one end of the first constant current resistor R1 ', an output end of the second amplifier INV2 is connected to the gate G of the second field effect transistor M2, a drain of the second field effect transistor M2 is an OUT end of the first constant current source 1, and a source S of the second field effect transistor M2 is a REXT end of the first constant current source 1 and is connected to the other end of the second constant current resistor R2'.
Optionally, the second constant current source 2 includes: a third amplifier INV3 and a third field effect transistor M3;
the output end of the third amplifier INV3 is connected to the gate G of the third field effect transistor M3, the drain of the third field effect transistor M3 is the OUT end of the second constant current source 2, and the source of the third field effect transistor M3 and the inverting input end of the third amplifier are the REXT end of the second constant current source 2.
Optionally, the power supply module comprises: the second winding resistor FR2, the protection resistor RV1, the second bridge rectifier DB2, and the third diode D3;
second wire winding resistance FR 2's a termination commercial power, second wire winding resistance FR 2's the other end respectively with protection resistance RV 1's one end and second rectifier bridge DB 2's alternating current pin 1 connects, second rectifier bridge DB 2's anodal pin 2, exchange and draw 3, negative pole pin 4 and connect respectively third diode D3 the positive pole another termination and the ground connection of commercial power, protection resistance RV 2's the other end with another termination of commercial power is connected, third diode D3's negative pole with constant current control module perhaps the stroboscopic light-emitting module that disappears connects.
Optionally, the constant current control module includes: a constant current control chip U1, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a fourth diode D4, a fifth diode D5 and a second energy storage capacitor E2;
a VT pin of the constant current control chip U1 is connected to one end of the seventh resistor R7 and one end of the eighth resistor R8, the other end of the seventh resistor R7 is connected to a cathode of the third diode D3, REXT1 and REXT2 pins of the constant current control chip U1 are connected to the fifth resistor R5 and the sixth resistor R6, the other ends of the fifth resistor R5, the sixth resistor R6 and the eighth resistor R8 are grounded, an OUT2 pin and a VIN pin of the constant current control chip U1 are both connected to a cathode of the third diode D3, an OUT1 pin of the constant current control chip U1 is connected to a cathode of the fourth diode D4, an anode of the fourth diode D4 is connected to a cathode of the fifth diode D5, and an anode of the fifth diode D5 is connected to the stroboscopic elimination module.
Optionally, the stroboscopic elimination module comprises: a stroboscopic eliminating chip U2, a ninth resistor R9, a third energy storage capacitor E3 and a first capacitor C1;
the VC pin of the stroboscopic chip that disappears U2 with the one end of first electric capacity C1 is connected, the other end of first electric capacity C1 respectively with third energy storage electric capacity E3 negative pole with the one end of ninth resistance R9 is connected, ninth resistance R9 the anode ground of third energy storage electric capacity E3, the OUT end of the stroboscopic chip that disappears U2 with light-emitting module's one end is connected, light-emitting module's other end ground.
Optionally, the stroboscopic elimination module is disposed at a front end, a middle end or a rear end of the light emitting unit string in the light emitting module.
Optionally, the light emitting module is formed by connecting a plurality of light emitting diodes in series or in parallel.
The utility model provides a voltage control device through set up constant current control module and eliminate stroboscopic module in light-emitting module, not only can make light-emitting module's power factor improve, can also guarantee light-emitting module's stroboscopic reduction to human visual experience has been improved.
Drawings
Fig. 1 is a schematic structural diagram of a voltage control apparatus according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of another voltage control apparatus according to an embodiment of the present invention.
Fig. 3(a) is a schematic view illustrating a connection between a stroboscopic elimination module and a light-emitting unit according to an embodiment of the present invention.
Fig. 3(b) is a schematic view illustrating a connection between another stroboscopic elimination module and a light-emitting unit according to an embodiment of the present invention.
Fig. 3(c) is a schematic view illustrating a connection between a stroboscopic elimination module and a light-emitting unit according to an embodiment of the present invention.
Fig. 4 is a schematic circuit diagram of a voltage control apparatus according to an embodiment of the present invention.
Fig. 5 is a schematic circuit diagram of a first constant current source according to an embodiment of the present invention.
Fig. 6 is a schematic circuit diagram of a second constant current source according to an embodiment of the present invention.
Fig. 7 is a schematic diagram of a voltage waveform and a current waveform of the AC input terminal when the input voltage is 120Va according to an embodiment of the present invention.
Fig. 8 is a schematic diagram of a voltage waveform and a current waveform of the AC input terminal when the input voltage is 150Va according to an embodiment of the present invention.
Fig. 9 is a schematic diagram of a voltage waveform and a current waveform of the AC input terminal when the input voltage is 220Va according to an embodiment of the present invention.
Fig. 10 is a schematic circuit diagram of another voltage control apparatus according to an embodiment of the present invention.
Fig. 11 is a schematic circuit diagram of another voltage control apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a voltage control device according to an embodiment of the present invention, as shown in fig. 1, the voltage control device includes: power module 1, constant current control module 2 and the stroboscopic light-emitting module that disappears, wherein, the stroboscopic light-emitting module that disappears includes: a light emitting module 31 and a stroboscopic elimination module 32;
the power supply module 1 is respectively connected with the constant-current control module 2 and the stroboscopic-eliminating light-emitting module and is used for supplying power to the constant-current control module 2 and the stroboscopic-eliminating light-emitting module;
the constant current control module 2 is connected in series or in parallel with the stroboscopic-eliminating light-emitting module and is used for improving the power factor of the light-emitting module 31 and keeping the power factor constant;
the stroboscopic elimination module 32 is connected in series or in parallel with the light emitting module 31, and is used for eliminating stroboscopic of the light emitting module 31.
In some embodiments, the constant current control module 2 and the stroboscopic elimination light-emitting module 31 and the stroboscopic elimination module 32 may have various connection relationships, as shown in fig. 1 and fig. 2, in fig. 1, the power supply module 1 is respectively connected to the constant current control module 2 and the stroboscopic elimination module 32, the constant current control module 2 is connected to the light-emitting module 31, and the light-emitting module 32 is connected to the stroboscopic elimination module 32. In fig. 2, the power supply module 1 is connected to the constant current control module 2 and the light emitting module 31, the constant current control module 2 is connected to the stroboscopic eliminating module 32, and the light emitting module 32 is connected to the stroboscopic eliminating module 32.
It should be noted that the light emitting module 31 may be formed by connecting a plurality of light emitting units in series or in parallel, where the light emitting units may be light emitting diode bulbs. The stroboscopic elimination module 32 can be disposed at the front end, the middle or the rear end of the light emitting unit string in the light emitting module 31 and connected in series with the light emitting unit. As shown in fig. 3(a), 3(b) and 3(c), the connection between the stroboscopic eliminating module 32 and the light-emitting unit is illustrated.
The stroboscopic elimination module 32 can reduce the current ripple function in the light-emitting module 31, and it can be a functional circuit module or an integrated circuit control chip, and its specific form is not limited as long as the stroboscopic elimination function can be realized.
An embodiment of the present invention provides a voltage control device, as shown in fig. 4, fig. 4 is the embodiment of the present invention provides a voltage control device's circuit structure diagram.
As shown in fig. 4, the power supply module 1 includes: a first winding resistor FR1 and a first bridge rectifier DB 1; one end of the first winding resistor FR1 is connected to the mains supply terminal, the other end of the first winding resistor FR1 is connected to the ac pin 1 of the first rectifier bridge stack DB1, and the positive pin 2, the ac lead 3, and the negative pin 4 of the first rectifier bridge stack DB1 are respectively connected to one end of the constant current control module 2, the other terminal of the mains supply, and the ground.
The constant current control module 2 includes: the constant current source circuit comprises a first constant current source 1, a second constant current source 2, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first diode D1, a second diode D2 and a first energy storage capacitor E1; the VT end of the first constant current source 1 is respectively connected with one ends of a third resistor R3 and a fourth resistor R4, the other end of the third resistor R3 is respectively connected with the power supply module, the OUT end of the first constant current source 1 and the anode end of the first energy storage capacitor E1, and the other end of the fourth resistor is respectively connected with the GND end of the first constant current source 1 and the stroboscopic-eliminating light-emitting module; the REXT end of the first constant current source 1 is connected with one end of a first resistor R1, and the other end of the first resistor R1 is connected with the GND end of the first constant current source 1, the other end of the fourth resistor R4, the stroboscopic light-emitting module and the first end of a second resistor R2; the REXT end of the second constant current source 2 is connected with the second end of the second resistor R2, the OUT end of the second constant current source 2 is connected with the cathode end of the first diode D1, and the anode end of the first diode D1 is connected with the cathode end of the first energy-storage capacitor E1 and the cathode end of the second diode D2 respectively; the GND terminal of the second constant current source 2 is connected to the first terminal of the second resistor R2, the other terminal of the first resistor R1, the other terminal of the fourth resistor R4, and the stroboscopic light-emitting module, respectively.
It should be noted that the positive pin 2 in the power supply module 1 is connected to the other end of the third resistor R3, the first constant current source 1, and the anode of the first energy storage capacitor.
Specifically, as shown in fig. 5, fig. 5 is a schematic circuit structure diagram of the first constant current source according to an embodiment of the present invention. Wherein the first constant current source 1 includes: a first amplifier INV1, a second amplifier INV2, a first field effect transistor M1, a second field effect transistor M2, a first constant current resistor R1 'and a second constant current resistor R2'; a positive phase input end of the first amplifier INV1 is a VT end of the first constant current source 1, an output end of the first amplifier INV1 is connected with a gate G of the first field effect transistor M1, a drain D of the first field effect transistor M1 is connected with a power supply VDD, a source S of the first field effect transistor M1 is respectively connected with one end of the second constant current resistor R2 'and an inverted input end of the first amplifier INV1, and the other end of the second constant current resistor R2' is a GND end of the first constant current source 1; an inverting input end of the second amplifier INV2 is connected to the drain D of the first field effect transistor M1, the power supply VDD, and one end of the first constant current resistor R1 ', an output end of the second amplifier INV2 is connected to the gate G of the second field effect transistor M2, a drain of the second field effect transistor M2 is an OUT end of the first constant current source 1, and a source S of the second field effect transistor M2 is a REXT end of the first constant current source 1 and is connected to the other end of the second constant current resistor R2'.
Specifically, as shown in fig. 6, fig. 6 is a schematic circuit structure diagram of the second constant current source according to an embodiment of the present invention. Wherein the second constant current source 2 includes: a third amplifier INV3 and a third field effect transistor M3; the output end of the third amplifier INV3 is connected to the gate G of the third field effect transistor M3, the drain of the third field effect transistor M3 is the OUT end of the second constant current source 2, and the source of the third field effect transistor M3 and the inverting input end of the third amplifier are the REXT end of the second constant current source 2.
The following describes a specific principle of the above circuit for improving the power factor of the light emitting module: the light emitting module is exemplified by an LED light string.
The VT port of the first constant current source 1 is used for sampling the voltage waveform of the rectified AC input of the third resistor R3 and the fourth resistor R4 of the partial voltage in real time, and the first constant current source 1 can detect the voltage waveform change of the input power grid in real time. When the voltage detected by the VT port of the first constant current source 1 is lower than a certain set voltage value Uvt, the first constant current source 1 outputs current as follows:
Iout=Vrext1/R1 equation 1
When the voltage detected by the VT port of the first constant current source 1 is higher than a certain set voltage value Uvt, the first constant current source 1 outputs a current of
Iout=V1rext1/Rext1=(Vrext1-(Vt-Uvt)*Vrext1) /R1 equation 2
When the low voltage 120Vac is input, only the first constant current source 1 and the LED light string form a working loop, the voltage value of the VT port of the first constant current source 1 can be set to be lower than the set value Uvt, and the output current of the first constant current source 1 is Iout=Vrext1the/R1, in one grid cycle, the duty ratio of the output current of the first constant current source 1 is n%, the working current waveform of the ac input end is as shown in fig. 7, and the system output power is:
P1=Iout1×ULEDn% of formula 3
When the input voltage is higher than 120Vac (for example, 150Vac), and the input voltage is higher than a certain voltage point in one cycle of the input voltage, the VT port voltage of the first constant current source 1 is higher than the set value, the first constant current source 1 changes the voltage of the adaptive power network, and the reference voltage value of the REXT port of the constant current source 1 is reduced, and at this time, the ac input terminal outputs the operating current waveform shown in fig. 8 at a certain voltage moment when the output current of the first constant current source 1 is output.
The VT port of the first constant current source 1 detects a voltage value high to some extent in one ac cycle, and as can be seen from the above equation, the output current Iout1 of the constant current source is 0 in one ac cycle. In a power grid period, the effective duty ratio of the output current of the first constant current source 1 is m%, the duty ratio can be adjusted through the first resistor R1 and the second resistor R2 which divide the voltage, and the output current of the first constant current source 1 is a current integral value within the m% duty ratio. The system input power at this time is equivalent to:
p2 ═ Iout1 (integrated value) × ULEDM% of formula 5
When the power grid voltage is 220Vac, the working current waveform of the system ac input end is as shown in fig. 9, in a power grid cycle, the power grid voltage rises, and when the VT port voltage of the first constant current source 1 corresponding to the voltage rise value of the power grid is lower than the set value Uvt, the first constant current source 1 outputs current to drive the LED light string to work current as shown in formula 1; with the rise of the voltage of the power grid, when the voltage of the VT port of the first constant current source 1 corresponding to the rise of the voltage of the power grid is higher than a set value, the output current of the first constant current source 1 is formula 2; along with the grid voltage continues to rise, the VT port voltage of first constant current source 1 is higher than a certain value, and first constant current source 1 no longer outputs current, and the voltage passes through first energy-storing capacitor E1 at this moment, first diode D1, permanent second current source 2, and the LED lamp cluster forms work circuit, and second constant current source 2 outputs constant current:
Iout2=Vrext2/R2 equation 6
Along with the reduction of the voltage of the power grid, the energy stored in the second energy storage capacitor E2 passes through the first constant current source 1, the LED light string, and the second diode D2 to form a working loop, and the output current of the first constant current source 1 is shown in formula 1.
In summary, under the input of the high voltage 220Vac, the system output current is that the first constant current source 1 and the second constant current source 2 output a certain current value together to drive the LED lamp string to work, the effective current duty ratio of the first constant current source 1 in one grid period is p%, and the output current of the constant current source 1 is the current integral value in the m% duty ratio.
Iout1(integral value)% p% formula 7
The effective current duty ratio of the second constant current source 2 in one grid period is q%, and the output current of the second constant current source 2 in one grid period is q%
Iout2=Vrext2Formula 8 of/R2 q%
At a high voltage of 220Vac input, the system output power is:
p3 ═ (Iout1 (integrated value) × P% + Iout2 (integrated value) × q%) × ulled formula 9
Constant current output control basic voltages Urext1 and Urext2 of the first constant current source 1 and the second constant current source 2 are fixed values, the resistance values of the first resistor R1 and the second resistor R2 and the resistance values of the third resistor R3 and the fourth resistor R4 of the first constant current source 1 are adjusted, so that the system output power P1 under the 120Vac grid voltage input can be equal to the output power P3 under the 220Vac grid voltage input, the system output power is basically consistent under the low voltage 120Vac and high voltage 220Vac input, and through the above, the system has a certain output power P2 in the middle state (such as 150Vac) of a high-low voltage range, and therefore, linear constant current driving power supplies in a full voltage range have a certain output power.
The above description is a working principle of a high PF low-frequency flash linear full voltage control mode, in which after the current of the LED light string is subjected to current ripple reduction processing by the stroboscopic eliminating module inside the stroboscopic eliminating unit, the test value of the percentage of flashing light emitted by the LED light satisfies < 30%.
The embodiment of the present invention provides another voltage control device, as shown in fig. 10, fig. 10 is a schematic circuit structure diagram of another voltage control device provided by the embodiment of the present invention.
As shown in fig. 10, the power supply module 1 includes: the second winding resistor FR2, the protection resistor RV1, the second bridge rectifier DB2, and the third diode D3; one end of the second winding resistor FR2 is connected with the commercial power terminal, the other end of the second winding resistor FR2 is connected with one end of the protection resistor RV1 and the alternating current pin 1 of the second rectifier bridge DB2, the anode pin 2, the alternating current lead 3 and the cathode pin 4 of the second rectifier bridge DB2 are connected with the anode of the third diode D3, the other terminal of the commercial power and the ground, the other end of the protection resistor RV2 is connected with the other terminal of the commercial power, and the cathode of the third diode D3 is connected with the constant current control module or the stroboscopic light-emitting module.
The constant current control module 2 includes: a constant current control chip U1, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a fourth diode D4, a fifth diode D5 and a second energy storage capacitor E2; the VT pin of the constant current control chip U1 is connected with one end of a seventh resistor R7 and one end of an eighth resistor R8 respectively, the other end of the seventh resistor R7 is connected with the cathode of a third diode D3, the REXT1 pin and the REXT2 pin of the constant current control chip U1 are connected with a fifth resistor R5 and a sixth resistor R6 respectively, the other ends of the fifth resistor R5, the sixth resistor R6 and the eighth resistor R8 are grounded, the OUT2 pin and the VIN pin of the constant current control chip U1 are both connected with the cathode of a third diode D3, the OUT1 pin of the constant current control chip U1 is connected with the cathode of a fourth diode D4, the anode of a fourth diode D4 is connected with the cathode of a fifth diode D5, and the anode of the fifth diode D5 is connected with the stroboscopic elimination module 32.
The embodiment of the utility model provides an in improve the principle of light emitting module's power factor, see aforementioned embodiment for details, no longer describe here.
In the embodiment of the present invention, the stroboscopic eliminating module 32 is a chip integrated with the stroboscopic eliminating function, wherein the stroboscopic eliminating module 32 includes: a stroboscopic eliminating chip U2, a ninth resistor R9, a third energy storage capacitor E3 and a first capacitor C1; the VC pin of the stroboscopic chip that disappears U2 is connected with one end of first electric capacity C1, and the other end of first electric capacity C1 is connected with the negative pole of third energy-storage capacitor E3 and the one end of ninth resistance R9 respectively, and the positive pole ground connection of ninth resistance R9, third energy-storage capacitor E3 disappears the OUT end of stroboscopic chip U2 and is connected with light-emitting module's one end, and light-emitting module's the other end ground connection.
An embodiment of the present invention provides another voltage control apparatus, as shown in fig. 11, fig. 11 is a schematic circuit structure diagram of another voltage control apparatus provided by an embodiment of the present invention.
As shown in fig. 11, please refer to the embodiment shown in fig. 10 for the specific structure of the power supply module 1, the constant current control module 2, the light emitting module 31 and the stroboscopic elimination module 32. The schematic diagram in fig. 10 changes the connection relationship between the power supply module and the constant current control module 2, the light emitting module 31, and the stroboscopic elimination module 32. Wherein, the concrete connection is as follows: the cathode of the third diode D3 in the power supply module 1 is connected to one end of the light emitting module 31, one end of the ninth resistor R9 in the stroboscopic elimination module 32, the anode of the third energy storage capacitor E3, and the cathode of the sixth triode D6; the anode of the sixth triode D6 is connected to the cathode of the seventh triode D7 and the anode of the second energy-storage capacitor E2, respectively, and the anode of the seventh triode D7, the seventh resistor R7, the VIN pin of the constant-current control chip U1, the ninth resistor R9, the cathode of the third energy-storage capacitor E3, and the first capacitor are all grounded.
In this embodiment, only the connection relationship of each module is changed, and the specific principle is described with reference to fig. 4, which is not described herein again.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A voltage control apparatus, comprising: power module, constant current control module and stroboscopic light-emitting module disappears, wherein, the stroboscopic light-emitting module that disappears includes: the device comprises a light-emitting module and a stroboscopic eliminating module;
the power supply module is respectively connected with the constant current control module and the stroboscopic-eliminating light-emitting module and is used for supplying power to the constant current control module and the stroboscopic-eliminating light-emitting module;
the constant current control module is connected with the stroboscopic-eliminating light-emitting module in series or in parallel and is used for improving the power factor of the light-emitting module and keeping the power factor constant;
the stroboscopic eliminating module is connected with the light-emitting module in series or in parallel and used for eliminating stroboscopic of the light-emitting module.
2. The voltage control apparatus of claim 1, wherein the power supply module comprises: a first winding resistor FR1 and a first bridge rectifier DB 1;
one end of first wire winding resistance FR1 connects the commercial power wiring end, another termination of first wire winding resistance FR1 the alternating current pin 1 of first rectifier bridge heap DB1, the anodal pin 2 of first rectifier bridge heap DB1, exchange and draw 3, negative pole pin 4 and connect respectively the one end of constant current control module another wiring end and the ground connection of commercial power.
3. The voltage control apparatus of claim 1, wherein the constant current control module comprises: the constant current source circuit comprises a first constant current source 1, a second constant current source 2, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, a first diode D1, a second diode D2 and a first energy storage capacitor E1;
the VT end of the first constant current source 1 is connected to one ends of a third resistor R3 and a fourth resistor R4, respectively, the other end of the third resistor R3 is connected to the power supply module, the OUT end of the first constant current source 1, and the anode end of the first energy storage capacitor E1, respectively, and the other end of the fourth resistor is connected to the GND end of the first constant current source 1 and the stroboscopic light-emitting module, respectively;
the REXT end of the first constant current source 1 is connected to one end of the first resistor R1, and the other end of the first resistor R1 is connected to the GND end of the first constant current source 1, the other end of the fourth resistor R4, the stroboscopic light-emitting module and the first end of the second resistor R2;
the REXT end of the second constant current source 2 is connected to the second end of the second resistor R2, the OUT end of the second constant current source 2 is connected to the cathode end of the first diode D1, and the anode end of the first diode D1 is connected to the cathode end of the first energy-storing capacitor E1 and the cathode end of the second diode D2, respectively;
the GND terminal of the second constant current source 2 is connected to the first terminal of the second resistor R2, the other terminal of the first resistor R1, the other terminal of the fourth resistor R4, and the stroboscopic light-emitting module, respectively.
4. The voltage control device according to claim 3, wherein the first constant current source 1 includes: a first amplifier INV1, a second amplifier INV2, a first field effect transistor M1, a second field effect transistor M2, a first constant current resistor R1 'and a second constant current resistor R2';
a positive phase input end of the first amplifier INV1 is the VT end of the first constant current source 1, an output end of the first amplifier INV1 is connected with the gate G of the first field effect transistor M1, the drain D of the first field effect transistor M1 is connected with the power supply VDD, the source S of the first field effect transistor M1 is respectively connected with one end of the second constant current resistor R2 'and the negative phase input end of the first amplifier INV1, and the other end of the second constant current resistor R2' is the GND end of the first constant current source 1;
an inverting input end of the second amplifier INV2 is connected to the drain D of the first field effect transistor M1, the power supply VDD, and one end of the first constant current resistor R1 ', an output end of the second amplifier INV2 is connected to the gate G of the second field effect transistor M2, the drain D of the second field effect transistor M2 is the OUT end of the first constant current source 1, and the source S of the second field effect transistor M2 is the REXT end of the first constant current source 1 and is connected to the other end of the second constant current resistor R2'.
5. The voltage control device according to claim 3, wherein the second constant current source 2 includes: a third amplifier INV3 and a third field effect transistor M3;
the output end of the third amplifier INV3 is connected to the gate G of the third field effect transistor M3, the drain of the third field effect transistor M3 is the OUT end of the second constant current source 2, and the source of the third field effect transistor M3 and the inverting input end of the third amplifier are the REXT end of the second constant current source 2.
6. The voltage control apparatus of claim 1, wherein the power supply module comprises: the second winding resistor FR2, the protection resistor RV1, the second bridge rectifier DB2, and the third diode D3;
second wire winding resistance FR 2's a termination commercial power, second wire winding resistance FR 2's the other end respectively with protection resistance RV 1's one end and second rectifier bridge DB 2's alternating current pin 1 connects, second rectifier bridge DB 2's anodal pin 2, exchange and draw 3, negative pole pin 4 and connect respectively third diode D3 the positive pole another termination and the ground connection of commercial power, protection resistance RV 2's the other end with another termination of commercial power is connected, third diode D3's negative pole with constant current control module perhaps the stroboscopic light-emitting module that disappears connects.
7. The voltage control apparatus of claim 6, wherein the constant current control module comprises: a constant current control chip U1, a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a fourth diode D4, a fifth diode D5 and a second energy storage capacitor E2;
a VT pin of the constant current control chip U1 is connected to one end of the seventh resistor R7 and one end of the eighth resistor R8, the other end of the seventh resistor R7 is connected to a cathode of the third diode D3, REXT1 and REXT2 pins of the constant current control chip U1 are connected to the fifth resistor R5 and the sixth resistor R6, the other ends of the fifth resistor R5, the sixth resistor R6 and the eighth resistor R8 are grounded, an OUT2 pin and a VIN pin of the constant current control chip U1 are both connected to a cathode of the third diode D3, an OUT1 pin of the constant current control chip U1 is connected to a cathode of the fourth diode D4, an anode of the fourth diode D4 is connected to a cathode of the fifth diode D5, and an anode of the fifth diode D5 is connected to the stroboscopic elimination module.
8. The voltage control apparatus of claim 7, wherein the strobe extinguishing module comprises: a stroboscopic eliminating chip U2, a ninth resistor R9, a third energy storage capacitor E3 and a first capacitor C1;
the VC pin of the stroboscopic chip that disappears U2 with the one end of first electric capacity C1 is connected, the other end of first electric capacity C1 respectively with third energy storage electric capacity E3 negative pole with the one end of ninth resistance R9 is connected, ninth resistance R9 the anode ground of third energy storage electric capacity E3, the OUT end of the stroboscopic chip that disappears U2 with light-emitting module's one end is connected, light-emitting module's other end ground.
9. The voltage control device according to any one of claims 1 to 8, wherein the stroboscopic elimination module is disposed at a front end, a middle end, or a rear end of a light emitting unit string in the light emitting module.
10. The voltage control device according to any one of claims 1 to 8, wherein the light emitting module is formed by connecting a plurality of light emitting diodes in series or in parallel.
CN201921529414.8U 2019-09-12 2019-09-12 Voltage control device Active CN210579375U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110475409A (en) * 2019-09-12 2019-11-19 深圳市明微电子股份有限公司 A kind of voltage-operated device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110475409A (en) * 2019-09-12 2019-11-19 深圳市明微电子股份有限公司 A kind of voltage-operated device
CN110475409B (en) * 2019-09-12 2024-07-16 深圳市明微电子股份有限公司 Voltage control device

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