CN207802471U - A kind of power self-regulation LED power - Google Patents
A kind of power self-regulation LED power Download PDFInfo
- Publication number
- CN207802471U CN207802471U CN201820202754.9U CN201820202754U CN207802471U CN 207802471 U CN207802471 U CN 207802471U CN 201820202754 U CN201820202754 U CN 201820202754U CN 207802471 U CN207802471 U CN 207802471U
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- Prior art keywords
- led lamp
- lamp bead
- power
- sampling resistor
- switch chip
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- 238000005070 sampling Methods 0.000 claims abstract description 40
- 239000011324 bead Substances 0.000 claims abstract description 39
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 15
- 239000003990 capacitor Substances 0.000 claims abstract description 7
- 230000005611 electricity Effects 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000002459 sustained effect Effects 0.000 description 3
- 238000012937 correction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a kind of power self-regulation LED powers, including rectification module, filter module and Voltage stabilizing module, rectification module to be connected with filter module, and filter module is connected with Voltage stabilizing module；Voltage stabilizing module includes that switch chip, the first inductance, filter capacitor, fly-wheel diode and sampling resistor, current sampling port are grounded by sampling resistor, and the sampling resistor is the thermistor of positive temperature coefficient, and the sampling resistor is arranged at LED lamp bead.The utility model is output to the electric current in LED lamp bead by sampling resistor acquisition, switch chip is using the voltage value at sampling resistor both ends as the power for being output to LED lamp bead according to adjusting, sampling resistor resistance value is bigger, the power for being output to LED lamp bead is smaller, using the thermistor of positive temperature coefficient as sampling resistor, sampling resistor is arranged near LED lamp bead, LED lamp bead temperature is higher, sampling resistor resistance value is bigger, and final realize reduces output power of power supply.The utility model is used for LED lamp bead output voltage electric current.
Description
Technical field
The utility model is related to electronic circuit technology fields, more specifically to LED power technical field.
Background technology
With the extensive use of LED lamp bead, the advantage on LED lamp bead electric property and optical property is increasingly apparent,
More and more companies put into the research and development of LED lamp.
Power supply is most important for LED lamp, and existing power supply is all the constant voltage and current of output, LED lamp bead
Fluorescent lifetime is more long, and the temperature of LED lamp bead is higher, is balanced with heat dissipation capacity until reaching calorific value, if LED lamp bead is constantly in height
Temperature state is easy to cause the reduction of LED lamp bead service life.
Utility model content
The technical problems to be solved in the utility model is：A kind of output power is provided with the raising of LED lamp bead temperature and
The power supply of reduction.
The solution that the utility model solves its technical problem is：
A kind of power self-regulation LED power, including rectification module, filter module and Voltage stabilizing module, the rectification module
Output end is connected with filter module input terminal, and the filter module output end is connected with Voltage stabilizing module input terminal；The voltage stabilizing mould
Block includes switch chip, the first inductance, filter capacitor, fly-wheel diode and sampling resistor, and the switch chip is configured with electricity
Stream sampling end and drain output, the current sampling port of the switch chip are grounded by sampling resistor, the switch chip
Drain output be connected with LED lamp bead cathode by the first inductance, the drain output of the switch chip and two pole of afterflow
Pipe anode is connected, and the fly-wheel diode cathode is connected with LED lamp bead anode, and the both ends of filter capacitor is connected on LED light respectively
Pearl both ends, the filter module output end are connected with LED lamp bead anode；The sampling resistor is the temperature-sensitive electricity of positive temperature coefficient
Resistance, the sampling resistor are arranged at LED lamp bead.
As a further improvement of the above technical scheme, the switch chip model BP2315.
As a further improvement of the above technical scheme, the Voltage stabilizing module further includes first resistor, second resistance, first
Capacitance, the first diode and the second inductance, first inductance and the second inductance form transformer, the switch chip configuration
There is power input；The first resistor and the first capacitance are connected between filter module output end and ground, the switch chip
Power input terminate between first resistor and the first capacitance, the power input of first diode cathode and switch chip
End is connected, and first diode cathode is grounded by second resistance, and second inductance in parallel is at second resistance both ends.
The utility model has the beneficial effects that：The utility model is output to the electricity in LED lamp bead by sampling resistor acquisition
Stream, switch chip is using the voltage value at sampling resistor both ends as the power for being output to LED lamp bead according to adjusting, sampling resistor resistance value
Bigger, the power for being output to LED lamp bead is smaller, and using the thermistor of positive temperature coefficient as sampling resistor, sampling resistor is set
It sets near LED lamp bead, LED lamp bead temperature is higher, and sampling resistor resistance value is bigger, and final realize reduces output power of power supply.This
Utility model is used for LED lamp bead output voltage electric current.
Description of the drawings
It is required in being described below to embodiment in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described.Obviously, described attached drawing is a part of the embodiment of the utility model, rather than complete
Portion's embodiment, those skilled in the art without creative efforts, can also be obtained according to these attached drawings it
His design scheme and attached drawing.
Fig. 1 is the embodiments of the present invention schematic diagram.
Specific implementation mode
The technique effect of the design of the utility model, concrete structure and generation is carried out below with reference to embodiment and attached drawing
It clearly and completely describes, to be completely understood by the purpose of this utility model, feature and effect.Obviously, described embodiment
It is a part of the embodiment of the utility model, rather than whole embodiments, it is based on the embodiments of the present invention, the skill of this field
The other embodiment that art personnel are obtained without creative efforts belongs to the model of the utility model protection
It encloses.In addition, all connection relations being previously mentioned in text, not single finger element directly connects, and referring to can be according to specific implementation feelings
Condition, by adding or reducing connecting element, to form more preferably circuit structure.Each technical characteristic in the invention,
It can be with combination of interactions under the premise of not conflicting conflict.
Referring to Fig.1, the utility model discloses a kind of power be self-regulated LED power, including rectification module, filter module with
And Voltage stabilizing module, the rectification module output end are connected with filter module input terminal, the filter module output end and voltage stabilizing mould
Block input terminal is connected；The Voltage stabilizing module includes switch chip, the first inductance L1, filter capacitor C, sustained diode and adopts
Sample resistance R, the switch chip are configured with current sampling port and drain output, and the current sampling port of the switch chip is logical
Over-sampling resistance R ground connection, the drain output of the switch chip is connected by the first inductance L1 with LED lamp bead cathode, described
The drain output of switch chip is connected with sustained diode anode, the sustained diode cathode and LED lamp bead anode phase
Even, the both ends the filter capacitor C are connected on LED lamp bead both ends respectively, and the filter module output end is connected with LED lamp bead anode；
The sampling resistor R is the thermistor of positive temperature coefficient, and the sampling resistor R is arranged at LED lamp bead.Specifically, this reality
Electric current in LED lamp bead is output to by sampling resistor R acquisitions with novel, switch chip is with the voltage value at the both ends sampling resistor R
As according to the power for being output to LED lamp bead is adjusted, sampling resistor R resistance values are bigger, and the power for being output to LED lamp bead is smaller, will
The thermistor of positive temperature coefficient sampling resistor R is arranged near LED lamp bead, LED lamp bead temperature is got over as sampling resistor R
Height, sampling resistor R resistance values are bigger, and final realize reduces output power of power supply.
It is further used as preferred embodiment, in specific embodiment of the present invention, the switch chip model
BP2315, specifically, the switch chip of the model is a high-precision voltage-dropping type LED constant current with active power factor correction
Chip is controlled, is suitable for the non-isolated step-down LED constant-current supply of 85Vac-265Vac gamut input voltages, and integrated active
Very high power factor and very low total harmonic distortion may be implemented in circuit of power factor correction.
It is further used as preferred embodiment, in specific embodiment of the present invention, the Voltage stabilizing module further includes
First resistor R1, second resistance R2, the first capacitance C1, the first diode D1 and the second inductance L2, the first inductance L1 with
Second inductance L2 forms transformer, and the switch chip is configured with power input；The first resistor R1 and the first capacitance C1
It is connected between filter module output end and ground, the power input of the switch chip terminates at first resistor R1 and the first capacitance
Between C1, the first diode D1 cathode are connected with the power input of switch chip, and the first diode D1 anodes are logical
Second resistance R2 ground connection is crossed, the second inductance L2 is connected in parallel on the both ends second resistance R2.Specifically, the first inductance L1 conducts
The armature winding of transformer, place the second inductance L2 are powered switch chip as the auxiliary winding of transformer, effectively drop
Low power supply power consumption.
The better embodiment of the utility model is illustrated above, but the invention be not limited to it is described
Embodiment, those skilled in the art can also make various equivalent changes without departing from the spirit of the present invention
Type or replacement, these equivalent modifications or replacement are all contained in the application claim limited range.
Claims (3)
- The LED power 1. a kind of power is self-regulated, it is characterised in that：It is described including rectification module, filter module and Voltage stabilizing module Rectification module output end is connected with filter module input terminal, and the filter module output end is connected with Voltage stabilizing module input terminal；Institute It includes switch chip, the first inductance, filter capacitor, fly-wheel diode and sampling resistor, the switch chip to state Voltage stabilizing module Configured with current sampling port and drain output, the current sampling port of the switch chip is grounded by sampling resistor, described The drain output of switch chip is connected by the first inductance with LED lamp bead cathode, the drain output of the switch chip with Fly-wheel diode anode is connected, and the fly-wheel diode cathode is connected with LED lamp bead anode, and the both ends of filter capacitor connects respectively At LED lamp bead both ends, the filter module output end is connected with LED lamp bead anode；The sampling resistor is positive temperature coefficient Thermistor, the sampling resistor are arranged at LED lamp bead.
- The LED power 2. a kind of power according to claim 1 is self-regulated, it is characterised in that：The switch chip model BP2315。
- The LED power 3. a kind of power according to claim 2 is self-regulated, it is characterised in that：The Voltage stabilizing module further includes First resistor, second resistance, the first capacitance, the first diode and the second inductance, first inductance and the second inductance form Transformer, the switch chip are configured with power input；The first resistor is connected on filter module output with the first capacitance Between end and ground, the power input of the switch chip terminates between first resistor and the first capacitance, first diode Cathode is connected with the power input of switch chip, and first diode cathode is grounded by second resistance, second electricity Sense is connected in parallel on second resistance both ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820202754.9U CN207802471U (en) | 2018-02-05 | 2018-02-05 | A kind of power self-regulation LED power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820202754.9U CN207802471U (en) | 2018-02-05 | 2018-02-05 | A kind of power self-regulation LED power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207802471U true CN207802471U (en) | 2018-08-31 |
Family
ID=63267443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820202754.9U Expired - Fee Related CN207802471U (en) | 2018-02-05 | 2018-02-05 | A kind of power self-regulation LED power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207802471U (en) |
-
2018
- 2018-02-05 CN CN201820202754.9U patent/CN207802471U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180831 |
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| CF01 | Termination of patent right due to non-payment of annual fee |