CN103561499A - Low power consumption stand-by circuit of tandem type LED circuit - Google Patents
Low power consumption stand-by circuit of tandem type LED circuit Download PDFInfo
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- CN103561499A CN103561499A CN201310505066.1A CN201310505066A CN103561499A CN 103561499 A CN103561499 A CN 103561499A CN 201310505066 A CN201310505066 A CN 201310505066A CN 103561499 A CN103561499 A CN 103561499A
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Abstract
The invention discloses a low power consumption stand-by circuit of a tandem type LED circuit. A constant current LED driver output by a wide voltage is output to the circuit through a cable, the first electrode of a voltage-regulator tube is connected with the cathode of a one-way silicon controlled rectifier, the control electrode of the one-way silicon controlled rectifier is connected with the other electrode of the voltage-regulator tube, the one-way silicon controlled rectifier is in tandem connection with a capacitor C1 and a resistor R1 and then is connected with the other electrode of the voltage-regulator tube, and the capacitor C1 and the resistor R1 are in parallel connection. When a module is not damaged, the circuit is not triggered, and only used as the stand-by circuit, when an open circuit of a certain light source module is damaged, the stand-by circuit is forced to be triggered, the current flows through the voltage-regulator tube, the one-way silicon controlled rectifier is broken over, and according to internal resistance of the one-way silicon controlled rectifier, the break-over voltage is basically maintained below 1V. The circuit has the advantages that under the constant current, power consumption can be remarkably reduced by the low voltage, a head radiator can be removed, space is reduced, and design is simplified. Meanwhile, for the constant current LED driver output by the wide voltage, the output power consumption is also reduced, and the reduction of the power consumption is beneficial to a driving power source.
Description
Technical field
The present invention relates to LED applied technical field, is mainly a kind of low-power consumption stand-by circuit of tandem type LED circuit.
Background technology
Prior art: 1. increase stand-by circuit at single module two ends, voltage-stabiliser tube is directly in parallel.After module damages, voltage-stabiliser tube substitutes module, all the other light source modules is obtained and work on.The shortcoming of above-mentioned technology is: module power is larger, and shunt regulator tube dissipation power is larger.Power-type voltage-stabiliser tube is expensive, uses difficulty.2. adopt the combination of power-type transistor AND gate small-power voltage-stabiliser tube, can make cost decline.The shortcoming of above-mentioned technology is: but be the module voltage of replace damaged, and need maintain the electric current of all the other modules, this standby circuit power consumption or large needs to be equipped with enough radiators and space for this reason, installs and difficulty in process.
Summary of the invention
The object of the invention is to overcome the deficiency that prior art exists, and a kind of low-power consumption stand-by circuit of tandem type LED circuit is provided.
The object of the invention is to complete by following technical solution.The low-power consumption stand-by circuit of this tandem type LED circuit, the constant-current LED driver of wide Voltage-output exports this circuit to through cable, one utmost point of voltage-stabiliser tube is connected with the negative electrode of one-way SCR, the control utmost point of one-way SCR is connected with another utmost point of voltage-stabiliser tube, and one-way SCR is connected in series capacitor C in parallel 1 and is connected with another utmost point of voltage-stabiliser tube with after resistance R 1; When module is intact, this circuit fails to trigger, only circuit in support; When a certain light source module open circuit breakage, stand-by circuit is forced to trigger, voltage-stabiliser tube current flowing, and one-way SCR conducting, according to one-way SCR internal resistance, conducting voltage maintains below 1V substantially.
This circuit is according to the whole lamp power quantity of connecting arbitrarily.
The invention has the beneficial effects as follows: when a certain light source module open circuit breakage, stand-by circuit is forced to trigger, voltage-stabiliser tube current flowing, one-way SCR conducting, according to controllable silicon internal resistance, conducting voltage maintains below 1V substantially, like this, and under constant current, low-voltage can obviously reduce power consumption, can save radiator, reduce space, simplified design.Meanwhile, for the constant-current LED driver of wide Voltage-output, electric current still keeps original constant current, and the voltage of output declines because of the decline of stand-by circuit voltage, and output power consumption also decreases, and like this driving power is good.This kind of adaptive model needs the constant-current LED driver of wide Voltage-output to coordinate, and is not suitable for constant voltage mode and drives.
Accompanying drawing explanation
Fig. 1 is principle schematic of the present invention;
Embodiment
Below by embodiment, the present invention is further elaborated, and embodiment understands the present invention better by help, but the present invention is not limited only to following embodiment.
As shown in Figure 1, the low-power consumption stand-by circuit of this tandem type LED circuit, the constant-current LED driver of wide Voltage-output exports this circuit to through cable, one utmost point of voltage-stabiliser tube is connected with the negative electrode of one-way SCR, the control utmost point of one-way SCR is connected with another utmost point of voltage-stabiliser tube, and one-way SCR is connected in series capacitor C in parallel 1 and is connected with another utmost point of voltage-stabiliser tube with after resistance R 1; When module is intact, this circuit fails to trigger, only circuit in support; When a certain light source module open circuit breakage, stand-by circuit is forced to trigger, voltage-stabiliser tube current flowing, and one-way SCR conducting, according to one-way SCR internal resistance, conducting voltage maintains below 1V substantially.
The constant-current LED driver of wide Voltage-output exports this circuit to through cable, and this circuit is according to the whole lamp power quantity of connecting arbitrarily, and when module is intact, this circuit fails to trigger, only circuit in support.
When a certain light source module open circuit breakage, stand-by circuit is forced to trigger, voltage-stabiliser tube current flowing, one-way SCR conducting, according to controllable silicon internal resistance, conducting voltage maintains below 1V substantially, like this, and under constant current, low-voltage can obviously reduce power consumption, can save radiator, reduce space, simplified design.
Meanwhile, for the constant-current LED driver of wide Voltage-output, electric current still keeps original constant current, and the voltage of output declines because of the decline of stand-by circuit voltage, and output power consumption also decreases, and like this driving power is good.
This kind of adaptive model needs the constant-current LED driver of wide Voltage-output to coordinate, and is not suitable for constant voltage mode and drives.
Performance table: (with 3 strings 3 also, every string 330ma module is example)
| ? | Stand-by circuit power consumption (W) | Driving power power consumption (W) |
| The circuit of |
30-32 | 30-32 |
| The circuit of |
30-32 | 30-32 |
| This |
1 | 1 |
One, embodiment
Light source: with 3 strings 3 also, every string 330ma module is embodiment, whole lamp experiment product is 12 module series connection (120W, 3 modules are a string, totally 4 groups).
LED driving power: Ai Weixin 120W power supply, continuous current: 1A, output voltage: DC120V,
Place the waterproof case of this circuit.
During normal operation, this circuit is not devoted oneself to work, and driving power power consumption approaches rated disspation.
Disconnect wherein one group, in this string, 3 modules extinguish, and stand-by circuit access replaces module work, the series current needing to maintain other modules, and power consumption is less than 1W.
Now, other 3 groups of light sources state that maintainings lights.The about 27W of driving power power-dissipation-reduced.
So far, complete target, produce a desired effect.
Experimental data
(with 3 strings 3 also, every string 330ma module is example, and single group experiment product is 12 module series connection)
Finally it should be noted that, except the present embodiment, the present invention can also have other execution mode and distortion, and what more than enumerate is only specific embodiments of the invention.All distortion that all those of ordinary skill in the art can directly derive or associate from content disclosed by the invention, all should think protection scope of the present invention.
Claims (2)
1. the low-power consumption stand-by circuit of a tandem type LED circuit, it is characterized in that: the constant-current LED driver of wide Voltage-output exports this circuit to through cable, one utmost point of voltage-stabiliser tube is connected with the negative electrode of one-way SCR, the control utmost point of one-way SCR is connected with another utmost point of voltage-stabiliser tube, and one-way SCR is connected in series capacitor C in parallel 1 and is connected with another utmost point of voltage-stabiliser tube with after resistance R 1; When module is intact, this circuit fails to trigger, only circuit in support; When a certain light source module open circuit breakage, stand-by circuit is forced to trigger, voltage-stabiliser tube current flowing, and one-way SCR conducting, according to one-way SCR internal resistance, conducting voltage maintains below 1V substantially.
2. the low-power consumption stand-by circuit of tandem type LED circuit according to claim 1, is characterized in that: this circuit is according to the whole lamp power quantity of connecting arbitrarily.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310505066.1A CN103561499A (en) | 2013-10-23 | 2013-10-23 | Low power consumption stand-by circuit of tandem type LED circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310505066.1A CN103561499A (en) | 2013-10-23 | 2013-10-23 | Low power consumption stand-by circuit of tandem type LED circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103561499A true CN103561499A (en) | 2014-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310505066.1A Pending CN103561499A (en) | 2013-10-23 | 2013-10-23 | Low power consumption stand-by circuit of tandem type LED circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111542796A (en) * | 2017-10-09 | 2020-08-14 | 道达尔太阳能国际公司 | Decoupling modeling method and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2445513Y (en) * | 2000-11-01 | 2001-08-29 | 闵运渭 | Single-wire control AC. electronic switching module |
| CN2574302Y (en) * | 2002-10-21 | 2003-09-17 | 闵运渭 | Single-line controlled AC piezoelectric switch |
| JP2005223103A (en) * | 2004-02-04 | 2005-08-18 | Sharp Corp | Light-emitting diode drive circuit and optical transmitter for optical fiber link |
| CN1710769A (en) * | 2005-06-15 | 2005-12-21 | 陈晓余 | Garment vehicle idle power-off electricity-saving device |
| CN101442852A (en) * | 2007-11-23 | 2009-05-27 | 王宝库 | Method and apparatus for setting back-up circuit for series circuit open circuit, and device current-limiting circuit |
-
2013
- 2013-10-23 CN CN201310505066.1A patent/CN103561499A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2445513Y (en) * | 2000-11-01 | 2001-08-29 | 闵运渭 | Single-wire control AC. electronic switching module |
| CN2574302Y (en) * | 2002-10-21 | 2003-09-17 | 闵运渭 | Single-line controlled AC piezoelectric switch |
| JP2005223103A (en) * | 2004-02-04 | 2005-08-18 | Sharp Corp | Light-emitting diode drive circuit and optical transmitter for optical fiber link |
| CN1710769A (en) * | 2005-06-15 | 2005-12-21 | 陈晓余 | Garment vehicle idle power-off electricity-saving device |
| CN101442852A (en) * | 2007-11-23 | 2009-05-27 | 王宝库 | Method and apparatus for setting back-up circuit for series circuit open circuit, and device current-limiting circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111542796A (en) * | 2017-10-09 | 2020-08-14 | 道达尔太阳能国际公司 | Decoupling modeling method and system |
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Application publication date: 20140205 |