CN209787527U - Device for solving flicker of LED dimming lamp - Google Patents
Device for solving flicker of LED dimming lamp Download PDFInfo
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- CN209787527U CN209787527U CN201920276671.9U CN201920276671U CN209787527U CN 209787527 U CN209787527 U CN 209787527U CN 201920276671 U CN201920276671 U CN 201920276671U CN 209787527 U CN209787527 U CN 209787527U
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Abstract
The utility model provides a device of LED dimming lamp scintillation includes resistance R1, resistance R2, triode N1, field effect transistor M1, zener diode D5 and resistance RL, external power source's the first end of power is connected in resistance R1 first end, triode N1's collecting electrode and field effect transistor M1's source electrode, resistance R1's second end is connected in resistance R2's first end and triode N1's base, external power source's power second end is connected in resistance R2's second end, triode N1's projecting pole, the power second end still is connected in field effect transistor M1's grid through zener diode D5, triode N1's collecting electrode still is connected in field effect transistor M1's grid, field effect transistor M1's source electrode still is connected in field effect transistor M1's drain electrode, field effect transistor M1's drain electrode passes through resistance RL and connects in the power second end. The device is equivalent to a dummy load, and the power of the lighting loop is increased, so that the current of the controllable silicon is increased. The maintaining current of the controlled silicon in the dimmer is improved, and the compatibility between the dimmer and the LED lamp is realized.
Description
Technical Field
The utility model relates to a power electronic technology, concretely relates to solve device of LED dimming lamp scintillation.
Background
The LED lamp can adjust the light technology, can adjust light brightness according to customer's requirement promptly to influence indoor light brightness, set off different indoor environment atmosphere. LED dimmable light starts to show a trend after overcoming the technical obstacles of dimming.
A Dimmer (Dimmer) is an electrical device for changing the luminous flux of a light source in a lighting device, adjusting the level of illumination. A large capacity and constituting a system is called a dimming device. The basic principle is to change the effective value of the current of the input light source to achieve the aim of dimming. The current LED dimming is divided into thyristor dimming and remote control, but in view of the fact that the remote control technology is complex in signal information and difficult to control the brightness, the current market still occupies the market with the thyristor dimming technology.
Dimmers are often equipped with dimmer accessories to address the problem of flicker that occurs when the LED lamp is not compatible with the dimmer during dimming by improving the holding current of the thyristor in the dimming system.
The current market for dimmer accessories is commonly used with RC bleeder devices. The RC is used as a dummy load, which is equivalent to adding a high-frequency load behind the rectifier bridge, and C is close to an open circuit for power frequency, so the RC is disconnected, and the impedance of C is very small for switching frequency, which is equivalent to a short circuit, so the RC is added behind the rectifier bridge to be used as a dummy load.
The biggest defect that prior art scheme exists is can produce extra electric current through the silicon controlled rectifier when starting, and the current oscillation takes place most easily this moment, can influence power factor, and the consumption is also great, and the consumption of components and parts resistance and electric capacity can bring the heat, causes the device to generate heat, has the potential safety hazard.
Therefore, it is necessary to provide a solution to improve the holding current of the thyristor in the dimmer and solve the problem of the LED dimming flash. The problems that the power consumption is high, the maintaining current is unstable, the power factor of an LED dimming lamp is influenced, the device is prone to generating heat and faults, potential safety hazards are caused and the like in the prior art are solved, and the problem that a dimmer is incompatible with the LED lamp is solved.
SUMMERY OF THE UTILITY MODEL
In order to improve the holding current of silicon controlled rectifier in the dimmer, solve the problem that LED dimming lamp dodged, reduce that the consumption that prior art scheme exists is higher, holding current is unstable, influence LED dimming lamp power factor, device easily generate heat the trouble and bring the potential safety hazard scheduling problem, solve dimmer and LED lamp incompatible problem, the utility model provides a solve the device that LED dimming lamp glimmered.
The utility model provides a solve device of LED dimming lamp scintillation, including resistance R1, resistance R2, triode N1, field effect transistor M1, zener diode D5 and resistance RL, the power first end of external power source connect in resistance R1 the first end, triode N1's collecting electrode and field effect transistor M1's source, the second end of the resistor R1 is connected to the first end of the resistor R2 and the base of the transistor N1, the second end of the external power supply is connected to the second end of the resistor R2 and the emitter of the transistor N1, the second terminal of the power supply is further connected to the gate of the fet M1 through the zener diode D5, the collector of the triode N1 is further connected to the gate of the fet M1, the source of the fet M1 is further connected to the drain of the fet M1, and the drain of the fet M1 is connected to the second end of the power supply through a resistor RL.
The utility model discloses a dummy load characteristic influences the electric current when the silicon controlled rectifier starts. The device is equivalent to a dummy load; the dummy load increases the power of the lighting circuit, thereby increasing the current of the thyristor. The maintaining current of the controlled silicon in the dimmer is improved, the problem of LED dimming lamp flashing is solved, and the compatibility between the dimmer and the LED lamp is realized.
The utility model provides a device of LED dimming lamp scintillation's further improvement lies in, field effect transistor M1's grid connect in zener diode D5's negative pole, zener diode D5's positive pole connect in the power second end.
The utility model provides a still further improvement of the device of LED dimmer lamp scintillation lies in, still includes diode D6, field effect transistor M1's source electrode passes through diode D6 connect in field effect transistor M1's drain electrode.
The utility model provides a device of LED dimming lamp scintillation further improve and lie in, field effect transistor M1's source connect in diode D6's positive pole, diode D6's negative pole connect in field effect transistor M1's drain electrode.
The utility model provides a further improvement of the device of LED dimmer lamp scintillation lies in, still includes resistance R3, the first end of power is passed through resistance R3 connect in triode N1's collecting electrode.
The utility model provides a still further improvement of device of LED dimming lamp scintillation lies in, external power source is alternating current power supply, the device of solving LED dimming lamp scintillation still includes rectifier bridge and filter capacitor C1.
The utility model provides a further improvement of the device of LED dimming lamp scintillation lies in, the rectifier bridge is the full-bridge.
The utility model provides a device of LED dimming lamp scintillation further improve and lie in, the first end of rectifier bridge is connected in the live wire, the second end of rectifier bridge connect in filter capacitance C1, resistance R1 resistance R3 diode D6 with field effect transistor M1's source electrode, the third end of rectifier bridge is connected in the zero line, the fourth end of rectifier bridge connect in filter capacitance C1 resistance R2 triode N1 zener diode D5 with resistance RL.
The utility model provides a device of LED dimming lamp scintillation's further improvement lies in, triode N1 is NPN type triode, field effect transistor M1 is N channel field effect transistor.
Drawings
Fig. 1 is a schematic view of a connection relationship between a device for solving the flicker of an LED dimming lamp and a dimmer and an LED lamp according to an embodiment of the present invention.
Fig. 2 is the schematic circuit structure diagram of the device for solving the flicker of the LED dimming lamp according to the embodiment of the present invention.
Detailed Description
In order to improve the holding current of silicon controlled rectifier in the dimmer, solve the problem that LED dimming lamp dodged, reduce that the consumption that prior art scheme exists is higher, holding current is unstable, influence LED dimming lamp power factor, device easily generate heat the trouble and bring the potential safety hazard scheduling problem, solve dimmer and LED lamp incompatible problem, the utility model provides a solve the device that LED dimming lamp glimmered.
The device for solving the flickering problem of the LED dimming lamp of the present invention will be further described with reference to the accompanying drawings and the specific embodiments. Other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein.
With reference to fig. 1 and fig. 2, the utility model provides a device of LED dimming lamp scintillation includes resistance R1, resistance R2, triode N1, field effect transistor M1, zener diode D5 and resistance RL, the first end of external power supply's power is connected to the first end of resistance R1, the collecting electrode of triode N1 and the source electrode of field effect transistor M1, the second end of resistance R1 is connected to the first end of resistance R2 and the base of triode N1, the power second end of external power supply is connected to the second end of resistance R2, the projecting pole of triode N1, the power second end is still connected to the gate of field effect transistor M1 through zener diode D5, the collecting electrode of triode N1 is still connected to the gate of field effect transistor M1, the source electrode of field effect transistor M1 is still connected to the drain electrode of field effect transistor M1, the drain electrode of field effect transistor M1 is connected to the power second end through resistance RL.
Further, the gate of the fet M1 is connected to the cathode of the zener diode D5, and the anode of the zener diode D5 is connected to the second terminal of the power supply.
Furthermore, the transistor also comprises a diode D6, and the source of the field effect transistor M1 is connected to the drain of the field effect transistor M1 through a diode D6.
Further, the source of the fet M1 is connected to the anode of the diode D6, and the cathode of the diode D6 is connected to the drain of the fet M1.
Furthermore, the power supply further comprises a resistor R3, and the first end of the power supply is connected to the collector of the transistor N1 through a resistor R3.
Furthermore, the external power supply is an alternating current power supply, and the device for solving the flicker of the LED dimming lamp further comprises a rectifier bridge and a filter capacitor C1.
Further, the rectifier bridge is a full bridge.
Furthermore, a first end of the rectifier bridge is connected to the live wire, a second end of the rectifier bridge is connected to the source electrodes of the filter capacitor C1, the resistor R1, the resistor R3, the diode D6 and the field effect transistor M1, a third end of the rectifier bridge is connected to the zero line, and a fourth end of the rectifier bridge is connected to the filter capacitor C1, the resistor R2, the triode N1, the zener diode D5 and the resistor RL.
Further, the transistor N1 is an NPN type transistor, and the fet M1 is an N-channel fet.
The thyristor current drops below its holding current in the dimmer 20 and the thyristor turns off. The utility model provides a problem how to control and maintain the silicon controlled rectifier electric current, make it when the conduction angle is minimum, remain stable to be fit for various dimmers, avoid LED lamp 30 to take place the scintillation problem.
With reference to fig. 1 and 2, the present invention is applied to the LED lamp dimming, and when in practice, the present device 10 is directly connected to the live wire and the zero line, and is connected to the LED lamp 30 and the dimmer 20. The live wire is connected with the cathode of the diode D4 and the anode of the diode D1 in the rectifier bridge, and the neutral wire is connected with the cathode of the diode D3 and the anode of the diode D2 in the rectifier bridge; a first end of the filter capacitor C1 is connected to the cathode of the diode D1 and the cathode of the diode D2, and a second end of the filter capacitor C1 is connected to the anode of the diode D3 and the anode of the diode D4; the resistor R1 and the resistor R2 are connected in series to form a branch circuit, and the branch circuit is connected in parallel to two ends of the filter capacitor C1; the base electrode of the triode N1 is connected between the resistor R1 and the resistor R2, the collector electrode of the triode N1 is connected to the first end of the filter capacitor C1 through the resistor R3, the collector electrode of the triode N1 is also connected to the gate electrode of the field-effect tube M1, and the emission set of the triode N1 is connected to the second end of the filter capacitor C1; the grid of the field effect transistor M1 is connected to the cathode of the zener diode D5, the anode of the zener diode D5 is connected to the second end of the filter capacitor C1, the source of the field effect transistor M1 is connected to the first end of the filter capacitor C1 and the anode of the diode D6, the cathode of the diode D6 is connected to the drain of the field effect transistor M1 and the first end of the resistor RL, and the second end of the resistor RL is connected to the second end of the filter capacitor C1.
The triode is connected with two divider resistors R1 and R2; the principle is as follows: the direct current working voltage from the rectifier bridge is divided by resistors R1 and R2, and then is added to the base of the triode to be used as the base direct current voltage of the triode; the duty ratio of the switch of the high-voltage power MOSFET is adjusted, so that the rise speed of di/dt can be reduced by the attenuation circuit, the negative oscillation of the current in the controlled silicon is prevented, and the minimum current in the controlled silicon is kept by the formed switch bleeder circuit. The voltage stabilizing diode D5 plays a role in protection; the output of the triode is a sine wave, which provides voltage for the grid of the field effect transistor M1 to control the switch of the field effect transistor M1. The resistor RL acts as a load and consumes a portion of the power.
The utility model discloses a dummy load characteristic influences the electric current when the silicon controlled rectifier starts. The device is equivalent to a dummy load; the dummy load increases the power of the lighting circuit, thereby increasing the current of the thyristor. The maintaining current of the controlled silicon in the dimmer is improved, the problem of LED dimming lamp flashing is solved, and the compatibility between the dimmer and the LED lamp is realized.
The above is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiments, and although the present invention has been disclosed with the above preferred embodiments, but the present invention is not limited to the above embodiments, and any skilled person familiar with the art can make some changes or modifications to equivalent embodiments without departing from the technical scope of the present invention, but all the technical matters of the present invention are within the scope of the technical solution of the present invention.
It should be noted that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the efficacy and the achievable purpose of the present invention.
Claims (9)
1. The utility model provides a solve device of LED dimming lamp scintillation which characterized in that: the power supply comprises a resistor R1, a resistor R2, a triode N1, a field effect transistor M1, a voltage stabilizing diode D5 and a resistor RL, wherein a first power supply end of an external power supply is connected with a first end of the resistor R1, a collector of the triode N1 and a source of the field effect transistor M1, a second power supply end of the resistor R1 is connected with a first end of the resistor R2 and a base of the triode N1, a second power supply end of the external power supply is connected with a second end of the resistor R2 and an emitter of the triode N1, the second power supply end is further connected with a gate of the field effect transistor M1 through the voltage stabilizing diode D5, a collector of the triode N1 is further connected with a gate of the field effect transistor M1, a source of the field effect transistor M1 is further connected with a drain of the field effect transistor M1, and a drain of the field effect transistor M1 is connected with the second.
2. The apparatus of claim 1, wherein the apparatus comprises: the grid of the field effect transistor M1 is connected to the cathode of the zener diode D5, and the anode of the zener diode D5 is connected to the second end of the power supply.
3. The apparatus of claim 2, wherein the apparatus comprises: the diode D6 is also included, and the source of the field effect transistor M1 is connected to the drain of the field effect transistor M1 through the diode D6.
4. The apparatus of claim 3, wherein the apparatus comprises: the source of the field effect transistor M1 is connected to the anode of the diode D6, and the cathode of the diode D6 is connected to the drain of the field effect transistor M1.
5. The apparatus of claim 4, wherein the apparatus comprises: the power supply further comprises a resistor R3, and the first end of the power supply is connected to the collector of the transistor N1 through the resistor R3.
6. The apparatus of claim 5, wherein the apparatus comprises: the external power supply is an alternating current power supply, and the device for solving the flicker problem of the LED dimming lamp further comprises a rectifier bridge and a filter capacitor C1.
7. The apparatus of claim 6, wherein the apparatus comprises: the rectifier bridge is a full bridge.
8. The apparatus of claim 7, wherein the apparatus comprises: the first end of the rectifier bridge is connected to a live wire, the second end of the rectifier bridge is connected to the source electrodes of the filter capacitor C1, the resistor R1, the resistor R3, the diode D6 and the field-effect transistor M1, the third end of the rectifier bridge is connected to a zero line, and the fourth end of the rectifier bridge is connected to the filter capacitor C1, the resistor R2, the triode N1, the zener diode D5 and the resistor RL.
9. The apparatus of claim 1, wherein the apparatus comprises: the triode N1 is an NPN type triode, and the field effect transistor M1 is an N-channel field effect transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920276671.9U CN209787527U (en) | 2019-03-05 | 2019-03-05 | Device for solving flicker of LED dimming lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920276671.9U CN209787527U (en) | 2019-03-05 | 2019-03-05 | Device for solving flicker of LED dimming lamp |
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| Publication Number | Publication Date |
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| CN209787527U true CN209787527U (en) | 2019-12-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920276671.9U Active CN209787527U (en) | 2019-03-05 | 2019-03-05 | Device for solving flicker of LED dimming lamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115134963A (en) * | 2022-06-28 | 2022-09-30 | 无锡市益明光电有限公司 | Prevent regulating circuit of LED lamp low temperature scintillation |
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2019
- 2019-03-05 CN CN201920276671.9U patent/CN209787527U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115134963A (en) * | 2022-06-28 | 2022-09-30 | 无锡市益明光电有限公司 | Prevent regulating circuit of LED lamp low temperature scintillation |
| CN115134963B (en) * | 2022-06-28 | 2023-04-14 | 无锡市益明光电有限公司 | Prevent regulating circuit of LED lamp low temperature scintillation |
| US11792902B1 (en) | 2022-06-28 | 2023-10-17 | Wuxi Seastar Lighting Co., Ltd. | Regulating circuit capable of preventing low-temperature flickering of LED lamp |
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