CN206775796U - Brightness adjustable LED perpetual calendars automatically - Google Patents
Brightness adjustable LED perpetual calendars automatically Download PDFInfo
- Publication number
- CN206775796U CN206775796U CN201720669336.6U CN201720669336U CN206775796U CN 206775796 U CN206775796 U CN 206775796U CN 201720669336 U CN201720669336 U CN 201720669336U CN 206775796 U CN206775796 U CN 206775796U
- Authority
- CN
- China
- Prior art keywords
- resistance
- circuit
- transistor
- bridge rectifier
- brightness
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/30—Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]
Landscapes
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
It the utility model is related to a kind of brightness adjustable LED perpetual calendars automatically, belong to perpetual calendar technical field, provide it is a kind of can be automatically according to the light intensity of environment, control the voltage of perpetual calendar, and then control the brightness adjustable LED perpetual calendars automatically of perpetual calendar brightness, used technical scheme is to include AC power and perpetual calendar module, also include bridge rectifier, relaxation oscillating circuit, photosensitive circuit, mu balanced circuit, error amplifying circuit and controllable silicon VS, the input of bridge rectifier connects the zero line and zero line side of AC power respectively, the output end of bridge rectifier is connected with perpetual calendar module and controllable silicon VS respectively；The utility model controls LED supply voltage using photo resistance, and then controls LED brightness, improves the display effect of perpetual calendar, reduces energy waste and light pollution, is widely used in the brightness regulation of perpetual calendar.
Description
Technical field
A kind of brightness adjustable LED perpetual calendars automatically are the utility model is related to, belong to perpetual calendar technical field.
Background technology
LED perpetual calendars are increasingly liked by people as a kind of household electrical appliance generally used, but with regard to its technology
From complete, also in the presence of some not near perfect parts, the problem of being primarily present is, the single brightness that the display of perpetual calendar uses
Display, so, when the problem of bringing is that daytime, light was brighter, people can not readily tell whether it lights；At night,
When dark, the brightness of display is relatively bright, and the eyes of people can be caused to stimulate uncomfortable sensation, particularly at night
During rest, its of a relatively high brightness influences whether the rest of people, forms light pollution.
Utility model content
For solve prior art existing for technical problem, the utility model provide it is a kind of can be automatically according to the light of environment
Line strength, controls the voltage of perpetual calendar, and then controls the brightness of perpetual calendar brightness adjustable LED perpetual calendars automatically.
To achieve the above object, technical scheme is brightness adjustable LED perpetual calendars automatically used by the utility model, is wrapped
AC power and perpetual calendar module are included, in addition to bridge rectifier, relaxation oscillating circuit, photosensitive circuit, mu balanced circuit, error are put
Big circuit and controllable silicon VS, the input of the bridge rectifier connect the zero line and zero line side of AC power, bridge-type respectively
The output end of rectifier is connected with perpetual calendar module and controllable silicon VS respectively；
The mu balanced circuit is mainly made up of resistance R1 and voltage-stabiliser tube VD, and the cathode output end of the bridge rectifier passes through
Resistance R1 is connected with voltage-stabiliser tube VD negative pole end, the positive terminal of the voltage-stabiliser tube VD and the cathode output end of bridge rectifier
It is connected；
The photosensitive circuit is mainly made up of photo resistance RG and variable resistor R4, and error amplifying circuit is mainly by transistor
VT1, resistance R2 and resistance R3 are formed, and relaxation oscillating circuit is mainly made up of transistor VT2, resistance R5 and electric capacity C2, the light
Quick resistance RG and variable resistor R4 are connected in series, and variable resistor R4 is connected with the positive terminal of mu balanced circuit, the photo resistance
It is connected with the negative pole end of mu balanced circuit, the base stage of the transistor VT1 is connected with photo resistance RG, the transistor VT1
Emitter stage pass through the positive terminal of resistance R2 connection mu balanced circuits, the negative pole end of resistance R3 connection mu balanced circuits, the electricity respectively
Resistance R2 and resistance R3 is connected in series, and the colelctor electrode of the transistor VT1 is described by the negative pole ends of electric capacity C2 connection mu balanced circuits
Transistor VT2 emitter stage is connected with transistor VT1 colelctor electrode, the first anode and mu balanced circuit of the transistor VT2
Positive terminal be connected, transistor VT2 second plate is connected by resistance R5 with the negative pole end of mu balanced circuit, described controllable
Silicon VS negative electrode is connected with transistor VT2 second plate.
Preferably, the photo resistance RG is drawn by wire and is arranged in transparent boxes.
Preferably, in addition to noise filter circuit, the noise filter circuit are mainly made up of electric capacity C1 and inductor L,
The inductor L is connected on the negative pole of bridge rectifier, and one end of the electric capacity C1 is connected with the zero line of AC power, separately
One end is connected with the positive pole of bridge rectifier.
Compared with prior art, the utility model has following technique effect：The utility model is sensed using photo resistance
The light intensity of environment, LED supply voltage is supplied to using control unit, improves the brightness that LED is shown；When environment
When brightness is dark, using photo resistance induced environment light intensity, the supply voltage for being supplied to LED is reduced using control unit,
Reduce the brightness that LED is shown；Simultaneously by adjusting the brightness of perpetual calendar, the display effect of perpetual calendar can be effectively improved, together
When also function to reduce the energy waste, and reduce light pollution effect.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Embodiment
In order that technical problem to be solved in the utility model, technical scheme and beneficial effect are more clearly understood, with
Lower combination drawings and Examples, the utility model is further elaborated.It is it should be appreciated that described herein specific real
Example is applied only to explain the utility model, is not used to limit the utility model.
As shown in figure 1, brightness adjustable LED perpetual calendars, including AC power and perpetual calendar module automatically, in addition to bridge-type
Rectifier, relaxation oscillating circuit, photosensitive circuit, mu balanced circuit, error amplifying circuit and controllable silicon VS, the input of bridge rectifier
End connects the zero line and zero line side of AC power respectively, the output end of bridge rectifier respectively with perpetual calendar module and controllable silicon
VS is connected；
Mu balanced circuit is mainly made up of resistance R1 and voltage-stabiliser tube VD, the cathode output end of bridge rectifier by resistance R1 with
Voltage-stabiliser tube VD negative pole end is connected, and voltage-stabiliser tube VD positive terminal is connected with the cathode output end of bridge rectifier；
Photosensitive circuit is mainly made up of photo resistance RG and variable resistor R4, error amplifying circuit mainly by transistor VT1,
Resistance R2 and resistance R3 is formed, and relaxation oscillating circuit is mainly made up of transistor VT2, resistance R5 and electric capacity C2, photo resistance RG
It is connected in series with variable resistor R4, variable resistor R4 is connected with the positive terminal of mu balanced circuit, photo resistance and mu balanced circuit
Negative pole end is connected, and transistor VT1 base stage is connected with photo resistance RG, and transistor VT1 emitter stage passes through resistance respectively
Positive terminal, the negative pole end of resistance R3 connection mu balanced circuits of R2 connection mu balanced circuits, resistance R2 and resistance R3 are connected in series, crystal
Pipe VT1 colelctor electrode passes through the negative pole ends of electric capacity C2 connection mu balanced circuits, transistor VT2 emitter stage and transistor VT1 collection
Electrode is connected, and the transistor VT2 first anode is connected with the positive terminal of mu balanced circuit, and transistor VT2 second plate leads to
Cross resistance R5 with the negative pole end of mu balanced circuit to be connected, controllable silicon VS negative electrode is connected with transistor VT2 second plate.
Transistor VT1, resistance R2, resistance R3 etc. form error amplifier in the utility model, and transistor VT1 substantially rises
To the effect of a variable resistor.Transistor VT2, electric capacity C2, resistance R5 etc. form relaxor, as touching for controllable silicon VS
Power Generation Road.When probe senses that the brightness of environment is dimmed, then photo resistance RG resistance increase, transistor VT1 base stage electricity
Position increase, its collector current reduce, so that electric capacity C2 charging interval increase, makes trigger pulse Phase delay, controllable silicon
The VS angles of flow reduce, and the supply voltage of perpetual calendar reduces, and LED luminance is dimmed；Conversely, when probe senses that the brightness of environment brightens
When, then photo resistance RG resistance reduces, and transistor VT1 base potential reduces, its collector current increase, so that electric capacity
C2 charging interval is reduced, and makes trigger pulse Phase advance, the increase of the controllable silicon VS angles of flow, and the supply voltage of perpetual calendar increases,
LED luminance brightens.In the case that ambient brightness is constant, when supply voltage fluctuates, LED brightness can also kept not
Become, play steady light action.Wherein also including noise filter circuit, noise filter circuit is mainly made up of electric capacity C1 and inductor L,
Inductor L is connected on the negative pole of bridge rectifier, and electric capacity C1 one end is connected with the zero line of AC power, the other end and bridge
The positive pole of formula rectifier is connected, and can suppress the Radio frequency interference to other electronic equipments.
When element selection is with installation and debugging, bridge rectifier is with 1A/400V's；Controllable silicon VS is unidirectional with 1A/400V's
Controllable silicon；Transistor VT2 intrinsic standoff ratio η ＜ 0.7 unijunction transistors, such as BT33B, its interbase resistance Rbb should try one's best big by one
A bit, with the total current of control circuit.Photo resistance RG electricity is well from bright resistance between 5~10K Ω, such as MG4354, MG4534
Deng.Photo resistance RG is drawn with two wires is mounted in the brightness with induced environment is used in the plastic casing in transparency window.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
All any modification, equivalent and improvement made within the spirit and principle of utility model etc., all should be wrapped in the utility model model
In enclosing.
Claims (3)
1. brightness adjustable LED perpetual calendars, including AC power and perpetual calendar module automatically, it is characterised in that：Also include bridge-type
Rectifier, relaxation oscillating circuit, photosensitive circuit, mu balanced circuit, error amplifying circuit and controllable silicon VS, the bridge rectifier
Input connects the zero line and zero line side of AC power respectively, the output end of bridge rectifier respectively with perpetual calendar module and can
Control silicon VS is connected；
The mu balanced circuit is mainly made up of resistance R1 and voltage-stabiliser tube VD, and the cathode output end of the bridge rectifier passes through resistance
R1 is connected with voltage-stabiliser tube VD negative pole end, and the positive terminal of the voltage-stabiliser tube VD is connected with the cathode output end of bridge rectifier
Connect；
The photosensitive circuit is mainly made up of photo resistance RG and variable resistor R4, error amplifying circuit mainly by transistor VT1,
Resistance R2 and resistance R3 is formed, and relaxation oscillating circuit is mainly made up of transistor VT2, resistance R5 and electric capacity C2, the photosensitive electricity
Resistance RG and variable resistor R4 is connected in series, and variable resistor R4 is connected with the positive terminal of mu balanced circuit, the photo resistance with it is steady
The negative pole end of volt circuit is connected, and the base stage of the transistor VT1 is connected with photo resistance RG, the hair of the transistor VT1
Emitter-base bandgap grading passes through the positive terminal of resistance R2 connection mu balanced circuits, the negative pole end of resistance R3 connection mu balanced circuits, the resistance R2 respectively
It is connected in series with resistance R3, the colelctor electrode of the transistor VT1 passes through the negative pole end of electric capacity C2 connection mu balanced circuits, the crystal
Pipe VT2 emitter stage is connected with transistor VT1 colelctor electrode, and the first anode and mu balanced circuit of the transistor VT2 are just
Extremely it is connected, transistor VT2 second plate is connected by resistance R5 with the negative pole end of mu balanced circuit, the controllable silicon VS
Negative electrode be connected with transistor VT2 second plate.
2. brightness according to claim 1 adjustable LED perpetual calendars automatically, it is characterised in that：The photo resistance RG leads to
Wire is crossed to draw in transparent boxes.
3. brightness according to claim 1 adjustable LED perpetual calendars automatically, it is characterised in that：Also include noise filtered electrical
Road, the noise filter circuit are mainly made up of electric capacity C1 and inductor L, and the inductor L is connected on the negative of bridge rectifier
Pole, one end of the electric capacity C1 are connected with the zero line of AC power, and the other end is connected with the positive pole of bridge rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720669336.6U CN206775796U (en) | 2017-06-09 | 2017-06-09 | Brightness adjustable LED perpetual calendars automatically |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720669336.6U CN206775796U (en) | 2017-06-09 | 2017-06-09 | Brightness adjustable LED perpetual calendars automatically |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206775796U true CN206775796U (en) | 2017-12-19 |
Family
ID=60637040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720669336.6U Expired - Fee Related CN206775796U (en) | 2017-06-09 | 2017-06-09 | Brightness adjustable LED perpetual calendars automatically |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206775796U (en) |
-
2017
- 2017-06-09 CN CN201720669336.6U patent/CN206775796U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104540292B (en) | Suitable for the light adjusting circuit and light adjusting system on controllable silicon dimmer circuit | |
| CN105072742B (en) | A kind of high-voltage linear constant current LED drive circuit | |
| CN204090230U (en) | Indicator light brightness automatic circuit and electronic installation | |
| CN102202451A (en) | Desk lamp capable of automatically controlling illumination | |
| CN106604481A (en) | LED linear constant current soft start drive circuit | |
| CN104010405B (en) | A kind of LED light adjusting circuit | |
| CN206775796U (en) | Brightness adjustable LED perpetual calendars automatically | |
| CN204362379U (en) | A kind of auto-excitation type LED conversion equipment realizing non-pole light regulating | |
| CN203675382U (en) | Simple automatic light-controlled circuit | |
| CN106163050A (en) | Street lamp buffer control system | |
| CN202385369U (en) | Light-operated desk lamp | |
| CN206640839U (en) | A kind of LED drive circuit | |
| CN103687149B (en) | Workload indication control circuit and electronic installation | |
| CN204761767U (en) | LED's automatic control drive circuit | |
| CN108124350B (en) | A kind of LED power supply system | |
| CN209170221U (en) | The adjustable boosting charge pump circuit device of voltage | |
| CN202634852U (en) | Linear constant-current LED (light-emitting diode) driver | |
| CN202095148U (en) | Infrared induction LED energy saving lamp circuit | |
| CN204795788U (en) | Linear constant current LED drive circuit of high pressure | |
| CN206004961U (en) | A kind of Internet of Things light fixture constant-current driving control circuit | |
| CN206042422U (en) | Decide BUCK of constant current frequently circuit | |
| CN206164946U (en) | Lamps and lanterns light modulation control circuit and lamps and lanterns | |
| CN109640448A (en) | A kind of constant current feedback control circuit | |
| CN204859676U (en) | LED drive arrangement | |
| CN217955417U (en) | OLED intelligent dimming device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20171219 Termination date: 20210609 |