CN211930931U - LED high-voltage dimming module - Google Patents
LED high-voltage dimming module Download PDFInfo
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- CN211930931U CN211930931U CN202020549828.3U CN202020549828U CN211930931U CN 211930931 U CN211930931 U CN 211930931U CN 202020549828 U CN202020549828 U CN 202020549828U CN 211930931 U CN211930931 U CN 211930931U
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Abstract
The utility model provides a LED high pressure module of adjusting luminance, including insurance resistance RF1, rectifier bridge DB1, piezo-resistor RV1, rectifier diode D1, lamp pearl subassembly, constant current chip U1, sampling resistor R1, system discharge resistance R2, power discharge resistance R3, filtering electrolytic capacitor E1, electric capacity discharge resistance R4, remove stroboscopic chip U2, electric capacity C1. The utility model has the advantages that: need not external drive power supply, the installation need not distinguish the direction, has promoted the installation effectiveness, the cost is reduced to, stroboscopic index has been reduced.
Description
Technical Field
The utility model relates to a lighting device especially relates to a LED high pressure module of adjusting luminance.
Background
The existing LED module needs an external driving power supply, the installation needs to distinguish directions, the installation efficiency is low, the cost is high, and the stroboscopic problem is serious.
Disclosure of Invention
In order to solve the problems in the prior art, the utility model provides a LED high pressure module of adjusting luminance.
The utility model provides a LED high pressure module of adjusting luminance, including insurance resistance RF1, rectifier bridge DB1, piezo-resistor RV1, rectifier diode D1, lamp pearl subassembly, constant current chip U1, sampling resistor R1, system discharge resistance R2, power discharge resistance R3, filtering electrolytic capacitor E1, electric capacity discharge resistance R4, remove stroboscopic chip U2, electric capacity C1, wherein, insurance resistance RF 1's one end is met with the alternating current live wire, insurance resistance RF 1's the other end with pin 1 of rectifier bridge DB1 connects; a pin 3 of the rectifier bridge DB1 is connected with an alternating current zero line, one end of the piezoresistor RV1 is connected between a pin 1 of the rectifier bridge DB1 and a safety resistor RF1, and the other end of the piezoresistor RV1 is connected between the pin 3 of the rectifier bridge DB1 and the alternating current zero line; a pin 2 of the rectifier bridge DB1 is connected to an anode of the rectifier diode D1 and one end of a power discharge resistor R3, respectively, and the other end of the power discharge resistor R3 is connected to a pin 7 of the constant current chip U1; the cathode of the rectifier diode D1 is connected with the anode of the filter electrolytic capacitor E1, one end of the capacitor discharge resistor R4 and the anode of the lamp bead assembly, the cathode of the lamp bead assembly is connected with the pin 2 of the stroboscopic removal chip U2, the pin 3 of the stroboscopic removal chip U2 is connected with the cathode of the filter electrolytic capacitor E1, the other end of the capacitor discharge resistor R4, one end of the capacitor C1 and the pin 5 of the constant current chip U1, the other end of the capacitor C1 is connected with the pin 1 of the stroboscopic removal chip U2, the pin 2 of the constant current chip U1 is connected with one end of the system discharge resistor R2, and the pin 4 of the constant current chip U1 is connected with the other end of the system discharge resistor R2 and one end of the sampling resistor R1; the other end of the sampling resistor R1 is grounded to a pin 4 of the rectifier bridge DB1, a pin 1 and a pin 3 of the constant current chip U1, the pin 1 of the stroboscopic removal chip U2 is a VC port, the pin 2 of the stroboscopic removal chip U2 is an OUT port, and the pin 3 of the stroboscopic removal chip U2 is a GND port.
As a further improvement, the lamp bead assembly comprises serially connected LED lamp beads.
As a further improvement of the utility model, the constant current chip U1 is the linear constant current chip of high pressure, has the silicon controlled rectifier function of adjusting luminance, withstand voltage 450V, and current range 5 mA-60 mA.
As a further improvement of the utility model, the filter electrolytic capacitor E1 is a high-voltage low-frequency filter electrolytic capacitor with withstand voltage of 200/400V, and the capacity of the electrolytic capacitor is set according to the ratio of 1:1 of each branch power.
As the utility model discloses a further improvement, remove stroboscopic chip U2 is a section and eliminates the chip of 100HZ 120HZ LED electric current literal wave, and built-in 90V power MOSFET, through the electric capacity C1's that detects OUT port voltage control VC port charge-discharge, adjusts built-in power MOSFET's operating condition, converts the LED electric current ripple into OUT port voltage ripple to make the electric current and the voltage holding of lamp pearl subassembly invariable.
The utility model has the advantages that: need not external drive power supply, the installation need not distinguish the direction, has promoted the installation effectiveness, the cost is reduced to, stroboscopic index has been reduced.
Drawings
Fig. 1 is a circuit diagram of a LED high-voltage dimming module according to the present invention.
Detailed Description
The present invention will be further described with reference to the following description and embodiments.
As shown in fig. 1, an LED high-voltage dimming module includes a safety resistor RF1, a rectifier bridge DB1, a voltage dependent resistor RV1, a rectifier diode D1, a lamp bead assembly, a constant current chip U1, a sampling resistor R1, a system discharge resistor R2, a power discharge resistor R3, a filter electrolytic capacitor E1, a capacitor discharge resistor R4, a stroboscopic removal chip U2, and a capacitor C1, wherein the lamp bead assembly is preferably a lamp bead LED1-LEDn connected in series, one end of the safety resistor RF1 is connected to an ac power line, and the other end of the safety resistor RF1 is connected to a pin 1 of the rectifier bridge DB 1; a pin 3 of the rectifier bridge DB1 is connected with an alternating current zero line, one end of the piezoresistor RV1 is connected between a pin 1 of the rectifier bridge DB1 and a safety resistor RF1, and the other end of the piezoresistor RV1 is connected between the pin 3 of the rectifier bridge DB1 and the alternating current zero line; a pin 2 of the rectifier bridge DB1 is connected to an anode of the rectifier diode D1 and one end of a power discharge resistor R3, respectively, and the other end of the power discharge resistor R3 is connected to a pin 7 of the constant current chip U1; the cathode of the rectifier diode D1 is connected with the anode of the filter electrolytic capacitor E1, one end of the capacitor discharge resistor R4 and the anode of the lamp bead LED1, the cathode of the lamp bead LEDn is connected with the pin 2 of the stroboscopic removal chip U2, the pin 3 of the stroboscopic removal chip U2 is connected with the cathode of the filter electrolytic capacitor E1, the other end of the capacitor discharge resistor R4, one end of the capacitor C1 and the pin 5 of the constant current chip U1, the other end of the capacitor C1 is connected with the pin 1 of the stroboscopic removal chip U2, the pin 2 of the constant current chip U1 is connected with one end of the system discharge resistor R2, and the pin 4 of the constant current chip U1 is connected with the other end of the system discharge resistor R2 and one end of the sampling resistor R1; the other end of the sampling resistor R1 is grounded to a pin 4 of the rectifier bridge DB1, a pin 1 and a pin 3 of the constant current chip U1, the pin 1 of the stroboscopic removal chip U2 is a VC port, the pin 2 of the stroboscopic removal chip U2 is an OUT port, and the pin 3 of the stroboscopic removal chip U2 is a GND port.
As shown in fig. 1, a rectifier bridge DB1 rectifies AC into DC, LED1.. LEDn is LED lamp beads, and the total voltage of ulled is controlled in a series connection manner to be between 0.8 and 1.2 times of the AC input voltage, so that the effect is optimal when ulled =1 Uac.
As shown in fig. 1, the constant current chip U1 is a high voltage linear constant current chip with a thyristor dimming function, withstand voltage of 450V, and current range of 5 mA-60 mA.
As shown in FIG. 1, the smoothing electrolytic capacitor E1 is a high-voltage low-frequency smoothing electrolytic capacitor having a withstand voltage of 200/400V, and the capacity of the electrolytic capacitor is determined by the power of each small branch, and is generally set to 1: 1.
As shown in fig. 1, the stroboscopic removing chip U2 is a chip for eliminating 100HZ/120HZ LED current ripples, a 90V power MOSFET is arranged inside, the charging and discharging of a capacitor C1 of a VC port is controlled by detecting the voltage of an OUT port, the working state of the power MOSFET is adjusted, and the LED current ripples are converted into OUT port voltage ripples, so that the current and the voltage of the lamp bead assembly are kept constant.
As shown in fig. 1, a circuit composed of a safety resistor RF1 and a voltage dependent resistor RV1 can suppress surges, transient overvoltages, and overcurrents on a bleeding line, and is used for preventing the device from being burnt out due to an overlarge current caused by a mains supply surge, protecting the whole circuit system and the AC-LED chip from working stably, and prolonging the service life.
As shown in fig. 1, the safety resistor RF1 can also increase the PF value of the product, and improve the silicon controlled dimming effect of the product; the circuit formed by the power discharge resistor R3, the pin 7 of the constant current chip U1, the pin 2 of the constant current chip U1 and the system discharge resistor R2 can improve the dimming effect of the product by adjusting the resistance value of the system discharge resistor R2; realize the high-voltage dimming module that the commercial power intervenes.
The utility model provides a pair of LED high pressure module of adjusting luminance because of adopting the DOB scheme to remove external power supply, has improved the installation effectiveness, has saved the cost of labor, saves the power and has practiced thrift material cost promptly.
The utility model provides a LED high pressure module of adjusting luminance, the dimming effect is very good, can compatible most TRAIC light modulator, and insurance resistance RF1 can restrain the surge, improves the PF value, the value promotes the dimming effect of product, guarantees that scheme PF >0.9 passes through American Title 24 standard; the stroboscopic index can reach the effect of less than 5%, and the human eyes are effectively protected, and the working efficiency is improved.
The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.
Claims (5)
1. The utility model provides a LED high pressure module of adjusting luminance which characterized in that: the LED lamp comprises a safety resistor RF1, a rectifier bridge DB1, a voltage dependent resistor RV1, a rectifier diode D1, a lamp bead assembly, a constant current chip U1, a sampling resistor R1, a system discharge resistor R2, a power discharge resistor R3, a filter electrolytic capacitor E1, a capacitor discharge resistor R4, a stroboscopic removing chip U2 and a capacitor C1, wherein one end of the safety resistor RF1 is connected with an alternating current live wire, and the other end of the safety resistor RF1 is connected with a pin 1 of the rectifier bridge DB 1; a pin 3 of the rectifier bridge DB1 is connected with an alternating current zero line, one end of the piezoresistor RV1 is connected between a pin 1 of the rectifier bridge DB1 and a safety resistor RF1, and the other end of the piezoresistor RV1 is connected between the pin 3 of the rectifier bridge DB1 and the alternating current zero line; a pin 2 of the rectifier bridge DB1 is connected to an anode of the rectifier diode D1 and one end of a power discharge resistor R3, respectively, and the other end of the power discharge resistor R3 is connected to a pin 7 of the constant current chip U1; the cathode of the rectifier diode D1 is connected with the anode of the filter electrolytic capacitor E1, one end of the capacitor discharge resistor R4 and the anode of the lamp bead assembly, the cathode of the lamp bead assembly is connected with the pin 2 of the stroboscopic removal chip U2, the pin 3 of the stroboscopic removal chip U2 is connected with the cathode of the filter electrolytic capacitor E1, the other end of the capacitor discharge resistor R4, one end of the capacitor C1 and the pin 5 of the constant current chip U1, the other end of the capacitor C1 is connected with the pin 1 of the stroboscopic removal chip U2, the pin 2 of the constant current chip U1 is connected with one end of the system discharge resistor R2, and the pin 4 of the constant current chip U1 is connected with the other end of the system discharge resistor R2 and one end of the sampling resistor R1; the other end of the sampling resistor R1 is grounded to a pin 4 of the rectifier bridge DB1, a pin 1 and a pin 3 of the constant current chip U1, the pin 1 of the stroboscopic removal chip U2 is a VC port, the pin 2 of the stroboscopic removal chip U2 is an OUT port, and the pin 3 of the stroboscopic removal chip U2 is a GND port.
2. The LED high-voltage dimming module according to claim 1, wherein: the lamp bead component comprises LED lamp beads connected in series.
3. The LED high-voltage dimming module according to claim 1, wherein: the constant current chip U1 is a high-voltage linear constant current chip, has the function of silicon controlled rectifier dimming, is resistant to voltage of 450V, and has a current range of 5 mA-60 mA.
4. The LED high-voltage dimming module according to claim 1, wherein: the filter electrolytic capacitor E1 is a high-voltage low-frequency filter electrolytic capacitor with withstand voltage of 200/400V, and the capacity of the electrolytic capacitor is set according to the ratio of 1:1 of the power of each branch.
5. The LED high-voltage dimming module according to claim 1, wherein: the stroboscopic removing chip U2 is a chip for eliminating 100HZ/120HZ LED current ripples, a 90V power MOSFET is arranged in the stroboscopic removing chip, the working state of the power MOSFET is adjusted by detecting the charge and discharge of a capacitor C1 of an OUT port voltage control VC port, and LED current ripples are converted into OUT port voltage ripples, so that the current and the voltage of the lamp bead assembly are kept constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020549828.3U CN211930931U (en) | 2020-04-14 | 2020-04-14 | LED high-voltage dimming module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020549828.3U CN211930931U (en) | 2020-04-14 | 2020-04-14 | LED high-voltage dimming module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211930931U true CN211930931U (en) | 2020-11-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020549828.3U Active CN211930931U (en) | 2020-04-14 | 2020-04-14 | LED high-voltage dimming module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211930931U (en) |
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2020
- 2020-04-14 CN CN202020549828.3U patent/CN211930931U/en active Active
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