CN205666996U - Luminance adjustable is bright LED light that gradually goes out gradually - Google Patents
Luminance adjustable is bright LED light that gradually goes out gradually Download PDFInfo
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- CN205666996U CN205666996U CN201620563543.9U CN201620563543U CN205666996U CN 205666996 U CN205666996 U CN 205666996U CN 201620563543 U CN201620563543 U CN 201620563543U CN 205666996 U CN205666996 U CN 205666996U
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- 241001085205 Prenanthella exigua Species 0.000 claims description 27
- 230000005669 field effect Effects 0.000 claims description 13
- 238000005286 illumination Methods 0.000 claims description 12
- 239000003990 capacitor Substances 0.000 claims description 8
- 230000002411 adverse Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000005562 fading Methods 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003985 ceramic capacitor Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Abstract
The utility model provides a luminance adjustable is bright LED light that gradually goes out gradually, its characteristic includes: 5V DC power supply, rectangular pulse generator and pulse width modulation circuit, emitting diode drive circuit, the model chooseed for use of rectangular pulse generator and the time -base circuit IC1 among the pulse width modulation circuit for NE555. Opening bright or outage suddenly entirely at pitch -dark light at night and extinguishing, eyes are far from suitable in the twinkling of an eye, neither make things convenient for people's study or rest, and the eyes to the people have very adverse effect moreover. Can design one kind when opening the light switch light can slowly light, for slowly extinguishing when closing the light. If can realize such mode, firstly night the people eyes no longer receive the highlight and upset, accord with the physiological requirement of people's eyes. The utility model discloses a be the pulse width modulation circuit, it can adjust emitting diode LED's luminance, is an energy -conservation, economic, practical technical scheme.
Description
Technical field
This utility model belongs to application of electronic technology field, relates to that a kind of brightness is adjustable the brightest fades off LED illumination lamp.
Background technology
Common illuminating lamp or delay illuminating lamp typical mode of operation be: otherwise illuminating lamp opens all light, or illuminating lamp
Lighting automatic distinguishing after work a period of time, illumination lamp ignition does not has transient state to the brightness between extinguishing.At black night
Between illuminating lamp open all light or suddenly power-off is extinguished, moment eyes are far from suitable, not only the study of inconvenient people or rest, and
And the eyes of people are had very adverse effect.Illuminating lamp can be the brightest when opening luminous lamp switch can to design one
Rise, when closing illuminating lamp for extinguish at leisure.If such mode of operation can be realized, one be night the eyes of people be no longer influenced by
High light stimulates, and meets the physiological requirement of people's eyes.
Brightness described in the utility model is adjustable the brightest fades off base when being that core parts in LED illumination lamp circuit are selected
Circuit, it uses pulse width modulation circuit, the brightness of its scalable LED, be a kind of energy-conservation, economical,
Practical technical scheme.
Brightness described in the utility model described further below is adjustable the brightest fades off LED illumination lamp institute in implementation process
Relate to necessity, guardian technique content.
Utility model content
Goal of the invention and beneficial effect: between black night, all light opened by illuminating lamp or power-off suddenly is extinguished, moment eyes
It is far from suitable, not only the study of inconvenient people or rest, and the eyes of people are had very adverse effect.One can be designed
Plant the illuminating lamp when opening luminous lamp switch can light at leisure, when closing illuminating lamp for extinguish at leisure.If this can be realized
The mode of operation of sample, one be night people eyes be no longer influenced by high light stimulate, meet the physiological requirement of people's eyes.This practicality is new
Brightness described in type is adjustable, and the brightest fade off that core parts in LED illumination lamp circuit select is time base circuit, and it uses
Pulse width modulation circuit, the brightness of its scalable LED, is a kind of energy-conservation, economic, practical technical scheme.
Circuit operation principle: brightness described in the utility model is adjustable the brightest fades off LED illumination lamp, by time base circuit
IC1 is connected into the adjustable squarer of dutycycle, pulse frequency about 100Hz, and dutycycle size is adjusted by linear potentiometer RP
Joint.Mainly time by resistance R1, linear potentiometer RP and the top half of resistance R2 and electric capacity C1 in electric capacity C1 charging interval is normal
Number determines, discharge time is then determined by the time constant of the latter half of linear potentiometer RP, resistance R2 and electric capacity C1.At electric capacity
C1 is electrically charged period, and because the 2nd foot of time base circuit IC1 is in low level, time base circuit IC1 set, at the of time base circuit IC1
Between 3 foot output high period, enhancement mode N-channel field effect transistor VT1 drive super bright white light-emitting diode LED1～LED6
Luminous.
In electric capacity C1 discharge time, time base circuit IC1 is in reset state, and the 3rd foot of time base circuit IC1 exports low electricity
At ordinary times, enhancement mode N-channel field effect transistor VT1 is ended, and super bright white light-emitting diode LED1～LED6 no current pass through.
When linear potentiometer RP sliding end is positioned at previous position, the electric capacity C1 charging interval shortens, and discharge time lengthens, institute
With less by the average current of super bright white light-emitting diode LED1～LED6 in one cycle of pulse, super bright white
LED 1～LED6 luminosity is the least.When linear potentiometer RP sliding end moves down, during electric capacity C1 charging
Between elongated, discharge time reduces, the biggest by the average current of LED 1～LED6 in one cycle of pulse, super
Highlighted white LED 1～LED6 luminosity becomes big.So linear adjustment potentiometer RP just can change super bright
The brightness that white light-emitting diode LED1～LED6 is luminous.
Technical characteristic: brightness is adjustable the brightest fades off LED illumination lamp, and it includes 5V DC source, squarer
And pulse-width modulation circuit, LED driving circuit, it is characterised in that:
Squarer and pulse-width modulation circuit: it is by time base circuit IC1, resistance R1, linear potentiometer RP, resistance
R2, switching diode D1 and electric capacity C1 composition, time base circuit IC1 select model be NE555, the 4th foot of time base circuit IC1 and
7th foot of the 8th foot connection circuit positive pole VCC, time base circuit IC1 connects positive pole and the slip of linear potentiometer RP of switching diode D1
End, one end of linear potentiometer RP is by resistance R1 connection circuit positive pole VCC, and the 2nd foot of time base circuit IC1 and the 6th foot connect switch
The negative pole of diode D1, one end of resistance R2 and one end of electric capacity C1, the other end of resistance R2 connects another of linear potentiometer RP
End, the 1st foot of time base circuit IC1 and the other end connection circuit ground GND of electric capacity C1；
LED driving circuit: it is by switching diode D2, electrochemical capacitor C2, resistance R3, enhancement mode N-channel field effect
Should pipe VT1,6 super bright white light-emitting diode LED1～LED6 form, the 3rd foot of time base circuit IC1 connects switching diode
The positive pole of D2, the negative pole of switching diode D2 connects grid and the electrochemical capacitor of enhancement mode N-channel field effect transistor VT1 by resistance R3
The positive pole of C2, super bright white light-emitting diode LED1～LED2 mutually contacts, super bright white light-emitting diode LED3～
LED4 mutually contacts, and super bright white light-emitting diode LED5～LED6 mutually contacts, super bright white light-emitting diode LED1
Positive pole and the positive pole of super bright white light-emitting diode LED3 and the positive pole connection circuit of super bright white light-emitting diode LED5
The negative pole of positive pole VCC, super bright white light-emitting diode LED2 and the negative pole of super bright white light-emitting diode LED4 and superelevation
The negative pole of brilliant white LED 6 connects the drain electrode of enhancement mode N-channel field effect transistor VT1, the negative pole of electrochemical capacitor C2 and increasing
The source electrode connection circuit ground GND of strong type N-channel field effect transistor VT1；
5V DC power anode is connected with circuit anode VCC, and 5V DC power cathode is connected with circuit ground GND.
Accompanying drawing explanation
Accompanying drawing 1 is the brightness the brightest adjustable circuit work fading off one embodiment of LED illumination lamp that this utility model provides
Make schematic diagram.
Detailed description of the invention
According to brightness shown in the drawings adjustable the brightest fade off LED illumination lamp circuit fundamental diagram and accompanying drawing explanation, and
According to annexation between components and parts in each several part circuit described in utility model content, and the first device described in embodiment
Part technical parameter requires and circuit production main points carry out enforcement and can realize this utility model, below in conjunction with embodiment to this practicality
Novel correlation technique is further described.
The selection of components and parts and technical parameter thereof
IC1 is time base circuit, and the model of selection is NE555 or LM555, and packing forms is 8 pins of dual inline type；Respectively
Foot function: the 1st foot is circuit ground GND；2nd foot is for triggering end；3rd foot outfan；4th pin preset end；5th foot is for controlling electricity
Pressure；6th foot thresholding (threshold value)；7th foot is discharge end；8th foot is positive source；
D1～D2 is switching diode, and the model of selection is 1N4148；
Resistance R1 is metalfilmresistor, and its resistance is 3K Ω, and resistance R2 is metalfilmresistor, and its resistance is 3.6K Ω, electricity
Resistance R3 is metalfilmresistor, and its resistance is 220K Ω；
RP is linear potentiometer, and its resistance is 150K Ω；
C1 is electric capacity, and available leaded multilayer ceramic capacitor or ceramic disc capacitor, its capacity is 0.1 μ F/40V；C2 is electrochemical capacitor, and it holds
Amount is 220 μ F/16V；
VT1 is enhancement mode N-channel field effect transistor, and the model of selection is IRFZ22；
LED1～LED6 is super bright white light-emitting diode, selects 6 super bright white light-emitting diodes, a diameter of ￠
5, require that technical parameter is consistent.
Circuit production main points and circuit debugging
Because the brightness the brightest adjustable circuit structure fading off LED illumination lamp is fairly simple, as long as generally select
Electronic devices and components performance is intact, and the components and parts annexation in accompanying drawing is welded to specifications, physical connection line and weldering
Connect quality through going through correct after, circuit of the present utility model is made without any debugging substantially can normal work
Make；
In circuit debugging, 5V DC source can first replace with the adjustable D. C regulated of output electric current >=0.3A,
If finding, output load current does not reaches 160mA, should first detect resistance R1, resistance R2 resistance whether correct, next to that by electricity
The resistance of resistance R2 suitably reduces；
Enhancement mode N-channel field effect transistor in the on-state, is pressed between source electrode and the drain electrode of enhancement mode N-channel field effect transistor
Dropping the least, its pressure drop is the most negligible, and drives power very big, if the brightness of super bright white light-emitting diode is not
Enough, can to specifications on accompanying drawing 1 circuit fundamental diagram the connected mode of super bright white light-emitting diode increase superelevation
The quantity of brilliant white light emitting diode, super bright white light-emitting diode rises to 60.
Circuit structure design of the present utility model, components' placement, and its face shaping and size etc. thereof are all
It not key technology of the present utility model, be not the claimed guardian technique content of this utility model, because not affecting this
Utility model specific implementation process and the realization of utility model purpose, therefore illustrate the most one by one.
Claims (1)
1. brightness is adjustable the brightest fades off a LED illumination lamp, and it includes that 5V DC source, squarer and pulsewidth are adjusted
Circuit processed, LED driving circuit, it is characterised in that:
Described squarer and pulse-width modulation circuit are by time base circuit IC1, resistance R1, linear potentiometer RP, resistance
R2, switching diode D1 and electric capacity C1 composition, time base circuit IC1 select model be NE555, the 4th foot of time base circuit IC1 and
7th foot of the 8th foot connection circuit positive pole VCC, time base circuit IC1 connects positive pole and the slip of linear potentiometer RP of switching diode D1
End, one end of linear potentiometer RP is by resistance R1 connection circuit positive pole VCC, and the 2nd foot of time base circuit IC1 and the 6th foot connect switch
The negative pole of diode D1, one end of resistance R2 and one end of electric capacity C1, the other end of resistance R2 connects another of linear potentiometer RP
End, the 1st foot of time base circuit IC1 and the other end connection circuit ground GND of electric capacity C1；
Described LED driving circuit is by switching diode D2, electrochemical capacitor C2, resistance R3, enhancement mode N-channel field effect
Should pipe VT1,6 super bright white light-emitting diode LED1～LED6 form, the 3rd foot of time base circuit IC1 connects switching diode
The positive pole of D2, the negative pole of switching diode D2 connects grid and the electrochemical capacitor of enhancement mode N-channel field effect transistor VT1 by resistance R3
The positive pole of C2, super bright white light-emitting diode LED1～LED2 mutually contacts, super bright white light-emitting diode LED3～
LED4 mutually contacts, and super bright white light-emitting diode LED5～LED6 mutually contacts, super bright white light-emitting diode LED1
Positive pole and the positive pole of super bright white light-emitting diode LED3 and the positive pole connection circuit of super bright white light-emitting diode LED5
The negative pole of positive pole VCC, super bright white light-emitting diode LED2 and the negative pole of super bright white light-emitting diode LED4 and superelevation
The negative pole of brilliant white LED 6 connects the drain electrode of enhancement mode N-channel field effect transistor VT1, the negative pole of electrochemical capacitor C2 and increasing
The source electrode connection circuit ground GND of strong type N-channel field effect transistor VT1；
Described 5V DC power anode is connected with circuit anode VCC, and 5V DC power cathode is connected with circuit ground GND.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620563543.9U CN205666996U (en) | 2016-06-02 | 2016-06-02 | Luminance adjustable is bright LED light that gradually goes out gradually |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620563543.9U CN205666996U (en) | 2016-06-02 | 2016-06-02 | Luminance adjustable is bright LED light that gradually goes out gradually |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205666996U true CN205666996U (en) | 2016-10-26 |
Family
ID=57154266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620563543.9U Expired - Fee Related CN205666996U (en) | 2016-06-02 | 2016-06-02 | Luminance adjustable is bright LED light that gradually goes out gradually |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205666996U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105848369A (en) * | 2016-06-02 | 2016-08-10 | 吴建堂 | Fade-on fade-off LED lighting lamp with adjustable luminance |
| CN108284788A (en) * | 2018-01-15 | 2018-07-17 | 吴建堂 | Electric automobile horn gradually rings controller |
-
2016
- 2016-06-02 CN CN201620563543.9U patent/CN205666996U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105848369A (en) * | 2016-06-02 | 2016-08-10 | 吴建堂 | Fade-on fade-off LED lighting lamp with adjustable luminance |
| CN108284788A (en) * | 2018-01-15 | 2018-07-17 | 吴建堂 | Electric automobile horn gradually rings controller |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161026 Termination date: 20170602 |