CN205566726U - Power expander - Google Patents
Power expander Download PDFInfo
- Publication number
- CN205566726U CN205566726U CN201620224174.0U CN201620224174U CN205566726U CN 205566726 U CN205566726 U CN 205566726U CN 201620224174 U CN201620224174 U CN 201620224174U CN 205566726 U CN205566726 U CN 205566726U
- Authority
- CN
- China
- Prior art keywords
- power
- unit
- chip
- expander
- plastic
- 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
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a power expander, including electrical unit, isolation unit, plastic unit and drive unit, electrical unit is connected with plastic unit and drive unit respectively, keeps apart the unit and is connected with drive unit through the plastic unit. Electrical unit provides the power for plastic unit and drive unit, the time delay that the transmission was come has been revised earlier after keeping apart the unit operation, by the plastic of plastic unit, become more precipitous after the plastic to the PWM signal of input, drive unit enlargies the PWM signal, the high -power LED lamp of output driver. The utility model provides a power extended functionality has to higher, the more accurate power expander of drive efficiency.
Description
Technical field
This utility model relates to LED field, is specifically related to a kind of power expander.
Background technology
Relative to traditional electric filament lamp and electricity-saving lamp, LED has low in energy consumption, highly reliable, environmental protection and the advantage such as response time is short, and therefore, LED is increasingly widely used in the various fields such as illumination, backlight and decoration, progressively replace traditional electric filament lamp and electricity-saving lamp, become the lighting source of main flow.Along with LED solves at the extensive application in various fields, many problems demand round the actual application of LED, how extended power is one of them.
In general, drive the pulse-width signal that great power LED to pass through to input after isolation shaping, high-power FET drive output pulse width modulated signal, thus drive high-powered LED lamp.Extensive application along with LED, when the output of a main control chip is too small, when being not enough to drive a lot of high-power LED lamp, it is accomplished by the multiple power expander of adjunction after main control chip, high-power LED packet is connected in multiple power expander, thus the power that main control chip exports is amplified extension.
In sum, it is provided that one has power expansion function, and drive efficiency power expander higher, more accurate, it is that industry is still needed and solved the technical problem that.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, this utility model provides one and has power expansion function, and drive efficiency power expander higher, more accurate.
This utility model be the technical scheme is that by its technical problem of solution
A kind of power expander, including power subsystem, it is characterised in that: also including that isolated location, shaping unit and driver element, described power subsystem are connected with shaping unit and driver element respectively, described isolated location is connected with driver element by shaping unit.
Further, described power subsystem uses MC78M12CT chip, and the input of MC78M12CT chip connects diode D1, and the outfan of MC78M12CT chip connects electric capacity C1.
Further, described isolated location includes several photoelectrical couplers, and the input of described photoelectrical coupler connects resistor network.
Further, described isolated location includes three photoelectrical couplers.
Further, described photoelectrical coupler uses PC817 chip.
Further, described shaping unit uses CD40106 chip.
Further, described driver element uses SSF7508 chip.
The beneficial effects of the utility model are: this utility model provides a kind of power expander, power expansion function is achieved by simple structure, when the output of main control chip is too small, high-power LED lamp can be driven by extended power, there is drive efficiency high.
Accompanying drawing explanation
The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings:
Fig. 1 is module diagram of the present utility model；
Fig. 2 is the circuit theory diagrams of power subsystem；
Fig. 3 is the circuit theory diagrams of isolated location；
Fig. 4 is the circuit theory diagrams of shaping unit；
Fig. 5 is the circuit theory diagrams of driver element.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further details:
Referring to the drawings 1, this utility model dimming driver, including power subsystem 1, also include isolated location 2, shaping unit 3 and driver element 4, described power subsystem 1 is connected with shaping unit 3 and driver element 4 respectively, pwm signal input isolated location 2, isolated location 2 is connected with driver element 4 by shaping unit 3, the pwm signal after the extension of driver element 4 output.Power subsystem 1 provides power supply for shaping unit 3 and driver element 4；After the pwm signal of input is first after isolated location 2 processes, by shaping unit 3 shaping, becomes the most precipitous after shaping, have modified the time delay transmitted；Pwm signal is amplified by driver element 4, and output drives high-powered LED lamp.
As in figure 2 it is shown, described power subsystem 1 uses MC78M12CT chip, the input of MC78M12CT chip connects diode D1, and the outfan of MC78M12CT chip connects electric capacity C1.Also set up two for polar capacitor E1 and E2 storing electric energy, prevent voltage from changing suddenly.The DC voltage of input, after linear voltage stabilization chip MC78M12CT chip voltage stabilizing, is filtered by electric capacity C1, provides for shaping unit 3 and stablizes clean voltage.As it is shown on figure 3, described isolated location 2 includes several photoelectrical couplers, described photoelectrical coupler is connected with pwm signal by resistor network.The pwm signal of input, after isolated location 2 carries out electrical isolation, is transferred to power expander internal circuit, and pwm signal level is also changed simultaneously.As shown in Figure 4, described shaping unit 3 uses Schmidt trigger, makes the pwm signal shaped unit 3 of input become the most precipitous after processing, have modified the time delay transmitted, and makes the waveform of field effect transistor of subsequent drive unit 4 closer to the pwm signal inputted.As it is shown in figure 5, described driver element 4 uses SSF7508 chip, powerful field effect transistor to be amplified by pwm signal, high-powered LED lamp after output, can be driven.In the present embodiment, power expander is by the triple channel pwm signal of input, after isolation Shape correction, high-power FET drives output pwm signal, thus drives high-powered LED lamp.Therefore, isolated location 2 is provided with three photoelectrical couplers, and shaping unit 3 is provided with three Schmidt triggers, and driver element 4 is also equipped with three SSF7508 chips.As shown in Figure 3 and Figure 4, resistance BR1, BR2, BR3 and BR4 are the resistance of one of them passage, the resistance that GR1 and RR1 etc. is two other passage.
As preferred implementation of the present utility model, described photoelectrical coupler uses PC817 chip.Due to light-coupled isolation, the voltage range of the pwm signal of input is wider, does not interferes with the pwm signal of input, also would not disturb other power expander on signal main line when breaking down.
Further, as preferred implementation of the present utility model, described shaping unit 3 uses CD40106 chip.Having six groups of Schmidt triggers in CD40106 chip, a CD40106 chip just can meet the needs of the present embodiment triple channel pwm signal shaping, makes power expander more efficiently, simply.
Operation principle of the present utility model is described below in detail: after power expander connects unidirectional current, power subsystem 1 carries out voltage regulation filtering by linear voltage stabilization chip and electric capacity C1, there is provided stable power supply for shaping unit 3, also provide enough power to export for driver element 4 simultaneously.The pwm signal of input, after isolated location 2 is changed, is sent to shaping unit 3, and the pwm signal waveform of input is revised, and the time of the saltus step process of low and high level is shorter, it is possible to reduce the own loss of the field effect transistor in subsequent drive unit 4.Faint pwm signal, after driver element 4 amplifies, can drive the high-powered LED lamp being connected on outfan, drive high-power LED lamp by extended power.
It is above the preferably enforcement of utility model is illustrated, but this utility model is created and is not limited to described embodiment, those of ordinary skill in the art also can make all equivalent variations or replacement on the premise of this utility model spirit, and modification or the replacement of these equivalents are all contained in the application claim limited range.
Claims (7)
1. a power expander, including power subsystem (1), it is characterized in that: also include isolated location (2), shaping unit (3) and driver element (4), described power subsystem (1) is connected with shaping unit (3) and driver element (4) respectively, and described isolated location (2) is connected with driver element (4) by shaping unit (3).
A kind of power expander the most according to claim 1, it is characterised in that: described power subsystem (1) uses MC78M12CT chip, and the input of MC78M12CT chip connects diode D1, and the outfan of MC78M12CT chip connects electric capacity C1.
A kind of power expander the most according to claim 1, it is characterised in that: described isolated location (2) includes several photoelectrical couplers, and the input of described photoelectrical coupler connects resistor network.
A kind of power expander the most according to claim 3, it is characterised in that: described isolated location (2) includes three photoelectrical couplers.
5. according to a kind of power expander described in claim 3 or 4, it is characterised in that: described photoelectrical coupler uses PC817 chip.
A kind of power expander the most according to claim 1, it is characterised in that: described shaping unit (3) uses CD40106 chip.
A kind of power expander the most according to claim 1, it is characterised in that: described driver element (4) uses SSF7508 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620224174.0U CN205566726U (en) | 2016-03-21 | 2016-03-21 | Power expander |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620224174.0U CN205566726U (en) | 2016-03-21 | 2016-03-21 | Power expander |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205566726U true CN205566726U (en) | 2016-09-07 |
Family
ID=56815499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620224174.0U Expired - Fee Related CN205566726U (en) | 2016-03-21 | 2016-03-21 | Power expander |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205566726U (en) |
-
2016
- 2016-03-21 CN CN201620224174.0U patent/CN205566726U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205566726U (en) | Power expander | |
| CN204425735U (en) | A kind of LED voltage increase and current constant source and LED lamp | |
| CN103383099A (en) | Universal LED fluorescent lamp for electronic ballast | |
| CN203167362U (en) | LED bulb lamp applied to sound/light control switch | |
| CN204164782U (en) | Efficient LED light bar | |
| CN203015238U (en) | Off-line LED driving power supply | |
| CN205071401U (en) | A LED constant -current drive apparatus | |
| CN203072219U (en) | LED driving power supply | |
| CN203761616U (en) | LED lamp drive circuit | |
| CN204014184U (en) | A kind of drive circuit of LED traffic lights | |
| CN203708595U (en) | Novel LED light adjustment circuit | |
| CN206077741U (en) | A kind of high-power LED drive circuit for MR16 | |
| CN203243575U (en) | High-power LED lighting driver | |
| CN203618189U (en) | Driving module, main power supply module, driving power supply, LED lamp and system thereof | |
| CN203574910U (en) | LED bulb lamp | |
| CN203734874U (en) | LED street lamp based on technology of PWM (pulse width modulation) | |
| CN206323614U (en) | A kind of four illuminating lamp driving circuits | |
| CN202435677U (en) | Three-section brightness adjustment circuit and LED lamp | |
| CN208675580U (en) | PWM light adjusting circuit | |
| CN204305424U (en) | White LED lamp drive circuit | |
| CN205546052U (en) | PWM LED constant voltage drive power supply that adjusts luminance | |
| CN203480811U (en) | Variable message sign by LED pixel voltage-dividing power supply | |
| CN103561499A (en) | Low power consumption stand-by circuit of tandem type LED circuit | |
| CN203015239U (en) | Off-line LED driving power supply | |
| CN204362382U (en) | A kind of Novel LED energy-saving driving power circuit |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160907 Termination date: 20190321 |