CN205546104U - Silicon controlled rectifier response back -porch dimmer circuit - Google Patents
Silicon controlled rectifier response back -porch dimmer circuit Download PDFInfo
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- CN205546104U CN205546104U CN201620358576.XU CN201620358576U CN205546104U CN 205546104 U CN205546104 U CN 205546104U CN 201620358576 U CN201620358576 U CN 201620358576U CN 205546104 U CN205546104 U CN 205546104U
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Abstract
The utility model provides a silicon controlled rectifier response back -porch dimmer circuit, change PWM unit and electro -optical element including human infrared inductor, voltage, human infrared inductor's output is connected with relay RL1's an input and relay RL1's an output, another input ground connection of relay RL1, and another output of relay RL1 and resistance R1's one end and electric capacity C1's the one end and the voltage input of voltage commentaries on classics PWM unit hold and are connected resistance R1's the other end, electric capacity C1's other end ground connection. The utility model discloses can let lamps and lanterns the people come at once bright people to walk the slow deepening in back.
Description
Technical field
This utility model relates to lighting control equipment field, refers in particular to controllable silicon sensing trailing edge dimmer circuit.
Background technology
The 220V light fixture that existing human body sensing technical controlling is common, people Lai Dengliang can only be realized, the function turned off the light when you leave, the mode using switch controls light, and light does not has the change of brightness, and many times, need the most light when that people coming in, need the most dimmed when that people walking again, illuminate well road on the ground, it is possible to allow eyes slowly adapt to dark surrounds.
Summary of the invention
The technical problems to be solved in the utility model, is to provide controllable silicon sensing trailing edge dimmer circuit, is i.e. slowly declined by control back segment voltage, solve existing light fixture nobody and carry out the problem that bright people is the most dimmed after walking at once.
This utility model is achieved in that
nullControllable silicon sensing trailing edge dimmer circuit，Including human body infrared induction apparatus、Voltage turns PWM unit and electrooptic cell，The outfan of described human body infrared induction apparatus is connected with an outfan of an input of relay R L1 and relay R L1，Another input end grounding of relay R L1，Another outfan of relay R L1 and one end of resistance R1 and one end of electric capacity C1 and voltage turn the voltage input end of PWM unit and are connected，The other end of resistance R1、The other end ground connection of electric capacity C1，The control pole of PWM outfan and controllable silicon Q4 that voltage turns PWM unit is connected，The positive pole of controllable silicon Q4 is connected with the cathode output end of bridge rectifier D 2，The negative pole of controllable silicon Q4 is connected with one end of electrooptic cell，The other end of electrooptic cell is connected with the cathode output end of bridge rectifier D 2，Two outfans of bridge rectifier D 2 respectively with alternating current input、Another input of alternating current connects.
Described electrooptic cell is the LED that electricity changes into light.
The utility model has the advantage of: making light fixture can come after the bright people of horse back walks the most dimmed with people, convenient people illuminate use.
Accompanying drawing explanation
This utility model is further described the most in conjunction with the embodiments.
Fig. 1 is circuit theory schematic diagram of the present utility model.
Detailed description of the invention
nullRefer to shown in Fig. 1，This utility model provides a kind of controllable silicon sensing trailing edge dimmer circuit，Including human body infrared induction apparatus、Voltage turns PWM unit and electrooptic cell，The outfan of described human body infrared induction apparatus is connected with an outfan of an input of relay R L1 and relay R L1，Another input end grounding of relay R L1，Another outfan of relay R L1 and one end of resistance R1 and one end of electric capacity C1 and voltage turn the voltage input end of PWM unit and are connected，The other end of resistance R1、The other end ground connection of electric capacity C1，The control pole of PWM outfan and controllable silicon Q4 that voltage turns PWM unit is connected，The positive pole of controllable silicon Q4 is connected with the cathode output end of bridge rectifier D 2，The negative pole of controllable silicon Q4 is connected with one end of electrooptic cell，The other end of electrooptic cell is connected with the cathode output end of bridge rectifier D 2，Two outfans of bridge rectifier D 2 respectively with alternating current input、Another input of alternating current connects.
This utility model is in use, when nobody is through out-of-date, human body infrared induction apparatus output low level, relay R L1 is not turned on, one end of resistance R1 and one end of electric capacity C1 all do not have voltage, and voltage turns PWM unit does not has voltage to input, then output duty cycle is the level of 0, then controllable silicon Q4 control pole not electric, then electrooptic cell is in off position.When having people through out-of-date, human body infrared induction apparatus output high level, relay R L1 turns on, now voltage is directly inputted to voltage by relay R L1 and turns PWM unit by human body infrared induction apparatus, PWM unit exports the control level of full dutycycle immediately, make electrooptic cell immediately electric and put to the brightest, i.e. people is to the brightest.Electric capacity C1 also can have electricity simultaneously, when people just leaves, human body infrared induction apparatus output low level, relay R L1 is not turned on, but now electric capacity C1 has electricity, voltage on electric capacity C1 slowly declines, and the voltage of the voltage input end that voltage turns PWM unit slowly declines, then the dutycycle exported the most slowly declines, then controllable silicon Q4 control pole obtain taking than control, then electrooptic cell is the most dimmed so that people also has light after walking, and the most dimmed human eye that is also beneficial to accepts.
Wherein, electrooptic cell electric will change into the element of light, such as electric light, LED etc..Voltage turns PWM unit prior art and has multiple implementation, PWM chip (such as TL494 etc.) can be used to realize, or being directly modulated according to the transformational relation of voltage and dutycycle with a single-chip microcomputer or use the scheme (such as the scheme of Patent No. 03806279.8) in existing granted patent to carry out building realization, this utility model does not repeats them here.
The above embodiment, simply better embodiment of the present utility model, not limit this utility model practical range, therefore all equivalences done according to structure, feature and the principle described in this utility model claim change or modify, in all should including this utility model patent claim.
Claims (2)
- null1. controllable silicon sensing trailing edge dimmer circuit，It is characterized in that: include human body infrared induction apparatus、Voltage turns PWM unit and electrooptic cell，The outfan of described human body infrared induction apparatus is connected with an outfan of an input of relay R L1 and relay R L1，Another input end grounding of relay R L1，Another outfan of relay R L1 and one end of resistance R1 and one end of electric capacity C1 and voltage turn the voltage input end of PWM unit and are connected，The other end of resistance R1、The other end ground connection of electric capacity C1，The control pole of PWM outfan and controllable silicon Q4 that voltage turns PWM unit is connected，The positive pole of controllable silicon Q4 is connected with the cathode output end of bridge rectifier D 2，The negative pole of controllable silicon Q4 is connected with one end of electrooptic cell，The other end of electrooptic cell is connected with the cathode output end of bridge rectifier D 2，Two outfans of bridge rectifier D 2 respectively with alternating current input、Another input of alternating current connects.
- Controllable silicon the most according to claim 1 sensing trailing edge dimmer circuit, it is characterised in that: described electrooptic cell is the LED that electricity changes into light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620358576.XU CN205546104U (en) | 2016-04-26 | 2016-04-26 | Silicon controlled rectifier response back -porch dimmer circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620358576.XU CN205546104U (en) | 2016-04-26 | 2016-04-26 | Silicon controlled rectifier response back -porch dimmer circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205546104U true CN205546104U (en) | 2016-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620358576.XU Expired - Fee Related CN205546104U (en) | 2016-04-26 | 2016-04-26 | Silicon controlled rectifier response back -porch dimmer circuit |
Country Status (1)
| Country | Link |
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| CN (1) | CN205546104U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108174474A (en) * | 2017-11-30 | 2018-06-15 | 上海亚明照明有限公司 | Light-dimming method when LED light during opening and closing with dimming function and its opening and closing |
-
2016
- 2016-04-26 CN CN201620358576.XU patent/CN205546104U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108174474A (en) * | 2017-11-30 | 2018-06-15 | 上海亚明照明有限公司 | Light-dimming method when LED light during opening and closing with dimming function and its opening and closing |
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Legal Events
| 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 |
Granted publication date: 20160831 Termination date: 20190426 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |