CN202773129U - Lamp circuit - Google Patents
Lamp circuit Download PDFInfo
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- CN202773129U CN202773129U CN 201220366572 CN201220366572U CN202773129U CN 202773129 U CN202773129 U CN 202773129U CN 201220366572 CN201220366572 CN 201220366572 CN 201220366572 U CN201220366572 U CN 201220366572U CN 202773129 U CN202773129 U CN 202773129U
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- zener diode
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- light emitting
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- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 230000015556 catabolic process Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Abstract
A luminaire circuit, comprising: the filter rectifying circuit is provided with a power input end and a power output end, and is used for outputting direct current power from the power output end; a light-emitting module having an anode terminal and a cathode terminal, wherein the anode terminal is coupled to the power output terminal of the filter rectification circuit; a constant voltage output circuit having a Zener diode, wherein the Zener diode has a cathode terminal and an anode terminal, the cathode terminal of the Zener diode is coupled to the cathode terminal of the light emitting module, and the cathode terminal and the anode terminal of the Zener diode form a voltage output port; and a constant current circuit connected in series between the anode terminal of the Zener diode and a ground terminal for a constant current to flow through the light emitting module. The lamp circuit is provided with a constant voltage output circuit for outputting direct current power with fixed voltage, and the constant voltage output circuit has a simpler circuit structure and has the effect of reducing the circuit complexity.
Description
Technical field
The utility model is about a kind of lamp circuit, and especially a kind of have an extra lamp circuit of deciding Voltage-output.
Background technology
Please refer to shown in Figure 1ly, existing lamp circuit is to comprise a filter rectifier 91, a light emitting module 92 and a constant-current circuit 93, and this filter rectifier 91, light emitting module 92 and constant-current circuit 93 sequentially are connected in series.This filter rectifier 91 can be converted to direct current power with alternating electromotive force, and the direct current power after will changing transfers to this light emitting module 92; This light emitting module 92 can be the light-emitting diode of or several serial connections; This constant-current circuit 93 is that control is by the electric current of this light emitting module 92, to keep the normal operation of this light emitting module 92.
When luminous, can produce because of energising heat energy when these light emitting module 92 normal operations, accelerate damage for avoiding this light emitting module 92 Yin Gaore, generally set up in addition a radiating module 94, the heat energy that is produced to disperse this light emitting module 92.
Yet, this radiating module 94 generally all drives with direct current power, and this radiating module 94 has different voltage requirements from this light emitting module 92, therefore the electric power that this radiating module 94 is required, and can't be directly supplied with by this filter rectifier 91, and an electric pressure converter 95 must be set in addition, to provide this radiating module 94 required driving electric power, thus, will cause the cost of this lamp circuit and circuit complexity to increase.
The utility model content
Main purpose of the present utility model provides a kind of lamp circuit, and this lamp circuit has the certain voltage output circuit so that a burning voltage to be provided, and should decide voltage follower circuit and have better simply circuit structure.
For reaching aforementioned creation purpose, lamp circuit of the present utility model comprises: a filter rectifier has a power input end and a power output end, for by this power output end output DC power; One light emitting module has an anode end points and a negative electrode end points, and this anode end points couples the power output end of this filter rectifier; The certain voltage output circuit, has a Zener diode, this Zener diode has a cathode terminal and an anode tap, and the cathode terminal of this Zener diode couples the negative electrode end points of this light emitting module, and the cathode terminal of this Zener diode and the common Voltage-output port that forms of anode tap; And a constant-current circuit, be connected in series between the anode tap and an earth terminal of this Zener diode, for a fixed current this light emitting module of flowing through.
Lamp circuit of the present utility model, wherein should decide voltage follower circuit and have an auxiliary Zener diode, a cathode terminal that is somebody's turn to do auxiliary Zener diode couples the cathode terminal of this Zener diode, and an anode tap of this auxiliary Zener diode couples the anode tap of this Zener diode.
Lamp circuit of the present utility model, the voltage output end confession that wherein should decide voltage follower circuit connects a heat abstractor.
Another lamp circuit of the present utility model comprises: a filter rectifier has a power input end and a power output end, for by this power output end output DC power; One light emitting module has an anode end points and a negative electrode end points; The certain voltage output circuit, has a Zener diode, this Zener diode has a cathode terminal and an anode tap, and the common Voltage-output port that forms of the cathode terminal of this Zener diode and anode tap, the anode end points place that the cathode terminal of this Zener diode couples this light emitting module forms a high-pressure side, the negative electrode end points place that the anode tap of this Zener diode couples this light emitting module forms a low-pressure end, and this high-pressure side couples the power output end of this filter rectifier; And a constant-current circuit, be connected in series between this low-pressure end and the earth terminal, for a fixed current this light emitting module of flowing through.
Lamp circuit of the present utility model wherein should be decided voltage follower circuit and comprise a pressure limiting resistance, and this pressure limiting resistance and this Zener diode are connected in series between this high-pressure side and the low-pressure end.
Lamp circuit of the present utility model, wherein this pressure limiting resistance is coupled between the cathode terminal of this high-pressure side and this Zener diode.
Lamp circuit of the present utility model, wherein this pressure limiting resistance is coupled between the anode tap of this low-pressure end and this Zener diode.
Lamp circuit of the present utility model, wherein should decide voltage follower circuit and have an auxiliary Zener diode, a cathode terminal that is somebody's turn to do auxiliary Zener diode couples the cathode terminal of this Zener diode, and an anode tap of this auxiliary Zener diode couples the anode tap of this Zener diode.
Lamp circuit of the present utility model, the voltage output end confession that wherein should decide voltage follower circuit connects a heat abstractor.
The utility model beneficial effect is, lamp circuit of the present utility model, have to export fixed voltage direct current power decide voltage follower circuit, and should decide voltage follower circuit and have better simply circuit structure, have the effect of reduction circuit complexity.
Description of drawings
Fig. 1: existing lamp circuit calcspar.
Fig. 2: circuit structure first embodiment of the utility model lamp circuit.
Fig. 3: circuit structure first embodiment of the utility model lamp circuit.
Fig. 4: circuit structure second embodiment of the utility model lamp circuit.
[primary clustering symbol description]
(the utility model)
1 filter rectifier, 11 power input ends
12 power output ends, 2 light emitting modules
21 anode end points, 22 negative electrode end points
3 decide voltage follower circuit 30 Voltage-output ports
31 Zener diodes, 31 ' auxiliary Zener diode
311 cathode terminals, 311 ' cathode terminal
312 anode taps, 312 ' anode tap
32 pressure limiting resistance, 4 constant-current circuits
5 heat abstractor H high-pressure sides
The L low-pressure end
(having now)
91 filter rectifiers, 92 light emitting modules
93 constant-current circuits, 94 radiating modules
95 electric pressure converters.
Embodiment
For above-mentioned and other purpose, feature and advantage of the present utility model can be become apparent, preferred embodiment of the present utility model cited below particularly, and cooperate accompanying drawing, be described in detail below:
The utility model in full described " coupling " (coupling) refers between two assemblies by connected directly or indirectly, and makes this two inter-module have the connected mode of signal or the electric current of mutual transmission.
Please refer to shown in Figure 2, it is lamp circuit the first embodiment of the present utility model, comprise a filter rectifier 1, a light emitting module 2, certain voltage output circuit 3 and a constant-current circuit 4, this filter rectifier 1, light emitting module 2, decide voltage follower circuit 3 and constant-current circuit 4 sequentially is connected in series.
This filter rectifier 1 has a power input end 11 and a power output end 12, this power input end 11 is for connecting a power supply, and this power supply can be an AC power, this filter rectifier 1 can be an AC/DC converter, change with the alternating electromotive force that this power input end 11 is received, and in this power output end 12 outputs one direct current electric power.
This light emitting module 2 can comprise one or several light-emitting diodes, and have an anode end points 21 and a negative electrode end points 22, the anode end points 21 of this light emitting module 2 couples the power output end 12 of this filter rectifier 1, the direct current power of being exported to receive this filter rectifier 1.
Should decide voltage follower circuit 3 and have a Zener diode 31, this Zener diode 31 has a cathode terminal 311 and an anode tap 312, the cathode terminal 311 of this Zener diode 31 couples the negative electrode end points 22 of this light emitting module 2, and the cathode terminal 311 of this Zener diode 31 and the anode tap 312 common Voltage-output ports 30 that form.Because the breakdown voltage of this Zener diode 31 is fixed value, therefore 312 of the cathode terminal 311 of this Zener diode 31 and anode taps have fixing voltage difference, can produce in this Voltage-output port 30 direct current power of fixed voltage, therefore this Voltage-output port 30 can be for connecting a heat abstractor 5, make this radiating module 5 normal operations with the direct current power that fixed voltage is provided, and electric pressure converter or filter circuit must be set additionally again, the effect of oversimplifying to reach circuit.Wherein, this heat abstractor 5 can be a fan or other refrigerating assembly, does not limit at this.
This constant-current circuit 4 is connected in series between the anode tap 312 and an earth terminal of this Zener diode 31, and for a fixed current this light emitting module 2 of flowing through, wherein this constant-current circuit 4 can be the circuit combination of existing transistor AND gate resistance, does not limit at this.
Please refer to shown in Figure 3, should decide voltage follower circuit 3 and have an auxiliary Zener diode 31 ', this Zener diode 31 should auxiliary Zener diode 31 ' be connected in parallel, a cathode terminal 311 ' that namely is somebody's turn to do auxiliary Zener diode 31 ' couples the cathode terminal 311 of this Zener diode 31, and an anode tap 312 ' of this auxiliary Zener diode 31 ' couples the anode tap 312 of this Zener diode 31.Wherein, the better breakdown voltage with this Zener diode 31 of the breakdown voltage of this auxiliary Zener diode 31 ' is identical.Whereby, should decide the Voltage-output port 30 of voltage follower circuit 3 except the direct current power that fixed voltage can be provided, when electric current should be decided voltage follower circuit 3 by these light emitting module 2 inflows, this electric current can be average flow through this Zener diode 31 with should auxiliary Zener diode 31 ', to avoid excessive electric current to flow into this Zener diode 31 fully, this decides the effect of voltage follower circuit 3 to have protection; In addition, voltage follower circuit 3 had this auxiliary Zener diode 31 ' owing to should be decided, have shunting effect when making electric current decide voltage follower circuit 3 by this, the light emitting module 2 that can make lamp circuit of the present utility model be applicable to have larger electric current demand is to promote the practicality of whole lamp circuit.
Please refer to shown in Figure 4, it is the utility model lamp circuit the second embodiment, wherein the difference of the present embodiment and aforesaid the first embodiment is: this light emitting module 2 is connected in parallel, and this decides voltage follower circuit 3, and this constant-current circuit 4 is connected in series between this light emitting module 2 and the earth terminal.
In more detail, this filter rectifier 1 has this power input end 11 and power output end 12; This light emitting module 2 has this anode end points 21 and negative electrode end points 22; Should decide voltage follower circuit 3 and have this Zener diode 31, this Zener diode 31 has this cathode terminal 311 and anode tap 312, and the cathode terminal 311 of this Zener diode 31 and anode tap 312 common these Voltage-output ports 30 that form, anode end points 21 places that the cathode terminal 311 of this Zener diode 31 couples this light emitting module 2 form a high-pressure side H, negative electrode end points 22 places that the anode tap 312 of this Zener diode 31 couples this light emitting module 2 form a low-pressure end L, this high-pressure side H couples the power output end 12 of this filter rectifier 1, and this constant-current circuit 4 is connected in series between this low-pressure end L and this earth terminal.
Should decide voltage follower circuit 3 is better has in addition a pressure limiting resistance 32, this pressure limiting resistance 32 and this Zener diode 31 are connected in series between this high-pressure side H and the low-pressure end L, wherein, this pressure limiting resistance 32 can be coupled between the anode tap 312 and this low-pressure end L of this Zener diode 31, or as shown in Figure 4, this pressure limiting resistance 32 is coupled between the cathode terminal 311 and this high-pressure side H of this Zener diode 31, to adjust the voltage difference of the direct current power that this Voltage-output port 30 exported.This Voltage-output port 30 is except the direct current power that can produce fixed voltage, and the voltage adjustment by this pressure limiting resistance 32, can make the voltage difference of this Voltage-output port 30 less than the voltage difference of 2 of this light emitting modules, electric pressure converter or filter circuit must additionally be set again to carry out the adjustment of voltage, can drive the heat abstractor 5 with less voltage requirements, the effect of oversimplifying to reach circuit.
In addition, the utility model lamp circuit the second embodiment should decide voltage follower circuit 3, also can be provided with this auxiliary Zener diode as shown in Figure 3, and connected mode that should auxiliary Zener diode is identical with the first embodiment with the specification selection, repeated no more in this.
Lamp circuit of the present utility model, have to export fixed voltage direct current power decide voltage follower circuit, and should decide voltage follower circuit and have better simply circuit structure, have the effect of reduction circuit complexity.
Just the above only is preferred embodiment of the present utility model, when not limiting the utility model practical range with this; Therefore all simple equivalences of doing according to the utility model claim and creation description change and modify, all should still belong in the scope that the utility model patent contains.
Claims (9)
1. a lamp circuit is characterized in that, comprises:
A filter rectifier has a power input end and a power output end, for by this power output end output DC power;
A light emitting module has an anode end points and a negative electrode end points, and this anode end points couples the power output end of this filter rectifier;
Decide voltage follower circuit for one, has a Zener diode, this Zener diode has a cathode terminal and an anode tap, and the cathode terminal of this Zener diode couples the negative electrode end points of this light emitting module, and the cathode terminal of this Zener diode and the common Voltage-output port that forms of anode tap; And
A constant-current circuit is connected in series between the anode tap and earth terminal of this Zener diode, for a fixed current this light emitting module of flowing through.
2. lamp circuit as claimed in claim 1, it is characterized in that, should decide voltage follower circuit and have an auxiliary Zener diode, a cathode terminal that is somebody's turn to do auxiliary Zener diode couples the cathode terminal of this Zener diode, and an anode tap of this auxiliary Zener diode couples the anode tap of this Zener diode.
3. lamp circuit as claimed in claim 1 is characterized in that, this voltage output end confession of deciding voltage follower circuit connects a heat abstractor.
4. a lamp circuit is characterized in that, comprises:
A filter rectifier has a power input end and a power output end, for by this power output end output DC power;
A light emitting module has an anode end points and a negative electrode end points;
Decide voltage follower circuit for one, has a Zener diode, this Zener diode has a cathode terminal and an anode tap, and Voltage-output port of the common formation of the cathode terminal of this Zener diode and anode tap, the anode end points place that the cathode terminal of this Zener diode couples this light emitting module forms a high-pressure side, the negative electrode end points place that the anode tap of this Zener diode couples this light emitting module forms a low-pressure end, and this high-pressure side couples the power output end of this filter rectifier; And
A constant-current circuit is connected in series between this low-pressure end and the earth terminal, for a fixed current this light emitting module of flowing through.
5. lamp circuit as claimed in claim 4 is characterized in that, this is decided voltage follower circuit and comprises a pressure limiting resistance, and this pressure limiting resistance and this Zener diode are connected in series between this high-pressure side and the low-pressure end.
6. lamp circuit as claimed in claim 5 is characterized in that, this pressure limiting resistance is coupled between the cathode terminal of this high-pressure side and this Zener diode.
7. lamp circuit as claimed in claim 5 is characterized in that, this pressure limiting resistance is coupled between the anode tap of this low-pressure end and this Zener diode.
8. such as claim 4,5,6 or 7 described lamp circuits, it is characterized in that, should decide voltage follower circuit and have an auxiliary Zener diode, a cathode terminal that is somebody's turn to do auxiliary Zener diode couples the cathode terminal of this Zener diode, and an anode tap of this auxiliary Zener diode couples the anode tap of this Zener diode.
9. lamp circuit as claimed in claim 4 is characterized in that, this Voltage-output port of deciding voltage follower circuit connects a heat abstractor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW101213656 | 2012-07-16 | ||
| TW101213656U TWM441986U (en) | 2012-07-16 | 2012-07-16 | Lamp circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202773129U true CN202773129U (en) | 2013-03-06 |
Family
ID=47718319
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220366572 Expired - Fee Related CN202773129U (en) | 2012-07-16 | 2012-07-26 | Lamp circuit |
| CN201210262467.4A Pending CN103547021A (en) | 2012-07-16 | 2012-07-26 | Lamp circuit |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210262467.4A Pending CN103547021A (en) | 2012-07-16 | 2012-07-26 | Lamp circuit |
Country Status (2)
| Country | Link |
|---|---|
| CN (2) | CN202773129U (en) |
| TW (1) | TWM441986U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103547021A (en) * | 2012-07-16 | 2014-01-29 | 佛山市建准电子有限公司 | Lamp circuit |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100867361B1 (en) * | 2008-07-03 | 2008-11-06 | 김용철 | Led lamp circuit |
| TWI419605B (en) * | 2010-01-20 | 2013-12-11 | Sunonwealth Electr Mach Ind Co | Ac led lamp |
| CN201887972U (en) * | 2010-12-03 | 2011-06-29 | 上海嘉塘电子有限公司 | Special power conversion circuit for LEDs |
| CN201967207U (en) * | 2011-01-24 | 2011-09-07 | 广州南科集成电子有限公司 | High power coefficient constant current LED (light-emitting diode) lighting circuit |
| CN102307411A (en) * | 2011-05-17 | 2012-01-04 | 广州南科集成电子有限公司 | Light-emitting diode (LED) lamp control circuit having key element overvoltage protection function |
| TWM441986U (en) * | 2012-07-16 | 2012-11-21 | Sunon Electronics Foshan Co Ltd | Lamp circuit |
-
2012
- 2012-07-16 TW TW101213656U patent/TWM441986U/en not_active IP Right Cessation
- 2012-07-26 CN CN 201220366572 patent/CN202773129U/en not_active Expired - Fee Related
- 2012-07-26 CN CN201210262467.4A patent/CN103547021A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103547021A (en) * | 2012-07-16 | 2014-01-29 | 佛山市建准电子有限公司 | Lamp circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103547021A (en) | 2014-01-29 |
| TWM441986U (en) | 2012-11-21 |
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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: 20130306 Termination date: 20160726 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |