CN2814884Y - Two-purpose electronic transformer circuit - Google Patents
Two-purpose electronic transformer circuit Download PDFInfo
- Publication number
- CN2814884Y CN2814884Y CN 200520115503 CN200520115503U CN2814884Y CN 2814884 Y CN2814884 Y CN 2814884Y CN 200520115503 CN200520115503 CN 200520115503 CN 200520115503 U CN200520115503 U CN 200520115503U CN 2814884 Y CN2814884 Y CN 2814884Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- electronic transformer
- purpose electronic
- dual
- high frequency
- 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 - Lifetime
Links
- 230000001681 protective effect Effects 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 2
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 229910052736 halogen Inorganic materials 0.000 description 8
- 150000002367 halogens Chemical class 0.000 description 5
- 229920006395 saturated elastomer Polymers 0.000 description 5
- 229910052721 tungsten Inorganic materials 0.000 description 5
- 239000010937 tungsten Substances 0.000 description 5
- 238000004804 winding Methods 0.000 description 4
- -1 tungsten halogen Chemical class 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000007600 charging Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
A kind of dual-purpose electronic transformer circuit, it comprises that power supply is input to EMI filter circuit and output loading, between described EMI filter circuit and output loading, one inverter circuit is arranged, one high frequency transformer is arranged in inverter circuit, and it is underloading that described high frequency transformer can satisfy output loading by the auto-excitation type vibration.
Description
Technical field
The utility model relates to a kind of electronic transformer circuit, refers in particular to a kind of dual-purpose electronic transformer circuit, not only can use but also capable for LED uses for tungsten halogen lamp.
Background technology
Halogen lamp electronic transformer is a kind of electronic transformer that drives low-voltage halogen tungsten, and its main feature has: characteristics such as energy-saving safety, efficient height are a kind of electronic transformers of low-voltage halogen tungsten special use.Along with the continuous development of Lighting Industry, for the requirement of the supporting electronic product of light source more and more widely, the general halogen lamp electronic transformer on the existing market can't be realized the underloading function.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, and provide a kind of tungsten halogen lamp that can either drive, can drive underloaded LED lamp again, thereby solve the problem that present halogen lamp electronic transformer can't be realized the underloading function.
The technical solution of the utility model is as follows:
A kind of dual-purpose electronic transformer circuit is provided, not only can use but also capable for LED uses for tungsten halogen lamp, it comprises that power supply is input to EMI filter circuit and output loading, between described EMI filter circuit and output loading, one inverter circuit is arranged, one high frequency transformer is arranged in inverter circuit, and it is underloading that described high frequency transformer can satisfy output loading by the auto-excitation type vibration.
Described inverter circuit also connects a protective circuit.
By described high frequency transformer, the low tension of the high-frequency high-voltage on former limit output high frequency.
Be connected in series a Temp.-control fuse between described EMI filtering and inverter circuit.
Described protective circuit is made up of a diode, a triode, an electrochemical capacitor, four conventional, electric-resistance, can form by controllable silicon or IC components and parts.
Description of drawings
Fig. 1 is the circuit block diagram of a kind of dual-purpose electronic transformer circuit of the utility model;
Fig. 2 is the circuit theory diagrams of a kind of dual-purpose electronic transformer circuit of the utility model.
Embodiment
The utility model will be further described below in conjunction with accompanying drawing.
According to shown in Figure 1; a kind of dual-purpose electronic transformer circuit of the utility model connects power supply input 1, EMI filter circuit 1, inverter circuit 3, output loading 4 successively; protective circuit 5 is connected with inverter circuit 3; protective circuit 5 is used to detect whether overcurrent of inverter circuit 3 electric currents; play the function of overload protection; wherein inverter circuit 3 has a high frequency transformer 31, has realized the underloading function of electronic transformer by the self-oscillation of high frequency transformer 31.
According to shown in Figure 2, switching transistor Q1 among this figure and Q2 are the source that has of inverter circuit 3, and capacitor C 7 and C8 form passive leg.The return path of inverter circuit 3 is provided by C7 and C8.R1, C3 and bidirectional diode DB3 etc. form the start-up circuit of inverter circuit 3.Q1 and Q2 are the critical elements in the oscillating circuit, simultaneously the double as power switch.
After electronic transformer powered up, the electric current of the R1 that flows through was to starting capacitor C 3 chargings.Be elevated to breakover voltage (about 35V) value of DB3 when the C3 both end voltage after, DB3 avalanche breakdown, then by the basic emitter-base bandgap grading network discharge of Q2, Q2 is because of the positive bias conducting for C3.In Q2 conduction period, electric current flow through VDC, C7, L2a, Q2.The transient change of Q2 collector current produces an induced potential by L2a at inferior utmost point winding L 2c and the L2d two ends of L2, and polarity is that each winding end of the same name is for negative.The base potential of Q2 is raise, and base current and collector current further increase, and the positive feedback of interlock type makes Q2 jump to the saturation conduction state immediately.In conduction period, starting capacitor C 3 will produce further trigger impulse to stop the base stage to Q2 by diode D6 and triode Q2 discharge.Starting capacitor C 3 provides an external trigger number, the foundation of the higher-order of oscillation with keep then by means of the coupling between the saturable transformer L2 winding, the generation positive feedback realizes.After L2 reached capacity, the induced potential in each winding was zero, and the Q2 base potential is on a declining curve, and Ic2 reduces, L2a, in induced potential will stop Ic2 to reduce, polarity is end of the same name for just.So the Q2 base potential descends, the Q1 base potential raises, and the positive feedback of this interlock type makes Q2 withdraw from the saturated cut-off state that jumps to rapidly, and Q1 then jumps to saturated confucian orthodoxy by ending.Fall when logical in that Q1 is saturated, electric current flows through VDC, Q1, L2a, C8.When transformer L2 magnetic core enter saturated after, the positive feedback of interlock type is very fast make again Q2 saturated once more fall logical, and Q1 by conducting transition for ending.So go round and begin again, Q1 and Q2 take turns conducting, produce the voltage of high frequency on the L2b two ends, and this voltage is exactly output voltage.
Claims (6)
1, a kind of dual-purpose electronic transformer circuit, it comprises that power supply is input to EMI filter circuit and output loading, it is characterized in that, between described EMI filter circuit and output loading, one inverter circuit is arranged, one high frequency transformer is arranged in inverter circuit, and it is underloading that described high frequency transformer can satisfy output loading by the auto-excitation type vibration.
2, a kind of dual-purpose electronic transformer circuit as claimed in claim 1 is characterized in that described inverter circuit also connects a protective circuit.
3, a kind of dual-purpose electronic transformer circuit as claimed in claim 1 is characterized in that, by described high frequency transformer, and the low tension of the high-frequency high-voltage on former limit output high frequency.
4, a kind of dual-purpose electronic transformer circuit as claimed in claim 1 is characterized in that, has been connected in series a Temp.-control fuse between described EMI filtering and inverter circuit.
5, a kind of dual-purpose electronic transformer circuit as claimed in claim 1 is characterized in that: described protective circuit is made up of a diode, a triode, an electrochemical capacitor, four conventional, electric-resistance.
6, protective circuit as claimed in claim 4 also can be formed by controllable silicon or IC components and parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520115503 CN2814884Y (en) | 2005-07-25 | 2005-07-25 | Two-purpose electronic transformer circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520115503 CN2814884Y (en) | 2005-07-25 | 2005-07-25 | Two-purpose electronic transformer circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2814884Y true CN2814884Y (en) | 2006-09-06 |
Family
ID=36949971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520115503 Expired - Lifetime CN2814884Y (en) | 2005-07-25 | 2005-07-25 | Two-purpose electronic transformer circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2814884Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807862A (en) * | 2009-02-12 | 2010-08-18 | 奥斯兰姆有限公司 | Circuit arrangement, remodeling lamp and illuminator |
| CN106211517A (en) * | 2016-08-24 | 2016-12-07 | 深圳市兴灯业电子有限公司 | Light modulation multipurpose electronic transformer circuit |
-
2005
- 2005-07-25 CN CN 200520115503 patent/CN2814884Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101807862A (en) * | 2009-02-12 | 2010-08-18 | 奥斯兰姆有限公司 | Circuit arrangement, remodeling lamp and illuminator |
| CN106211517A (en) * | 2016-08-24 | 2016-12-07 | 深圳市兴灯业电子有限公司 | Light modulation multipurpose electronic transformer circuit |
| CN106211517B (en) * | 2016-08-24 | 2019-08-16 | 深圳市中电照明股份有限公司 | Dim multipurpose electronic transformer circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201414244Y (en) | Driving circuit for high-power LED street lamps | |
| CN201318651Y (en) | Led street lamp circuit | |
| CN101827488A (en) | Fluorescent lamp electronic ballast and lighting device | |
| CN201210762Y (en) | Embedded power source for LED fluorescent tube | |
| CN104284481A (en) | Bridgeless electrolytic-capacitor-free low-ripple-wave high-power constant-current power supply of LED lamp | |
| CN2814884Y (en) | Two-purpose electronic transformer circuit | |
| CN203734894U (en) | LED drive circuit | |
| CN202798489U (en) | Low-power-consumption no-isolation direct current (dc) source | |
| CN203537645U (en) | Induction type HID electronic trigger circuit and HID light fixture | |
| CN2660780Y (en) | Electronic transformer | |
| CN105898937B (en) | A kind of circuit of compatible driving LED lamp tube and fluorescent lamp tube | |
| CN1674757B (en) | Electromagnetic inductive lamp circuit | |
| CN202026517U (en) | Electronic ballast | |
| CN207692089U (en) | Power circuit and its lighting apparatus | |
| CN201213326Y (en) | Cold-starting power circuit for electrodeless lamp | |
| CN201708698U (en) | Constant-current switch power supply | |
| CN2798158Y (en) | Switch electric source apparatus | |
| CN2877186Y (en) | Induction fluorescent lamp electricity saver | |
| CN2814793Y (en) | Electronic transformer | |
| CN204291448U (en) | A kind of three gear adjusting control circuits | |
| CN209949495U (en) | Novel electronic ballast drive control circuit | |
| CN201114953Y (en) | A fluorescent lamp circuit device | |
| CN201119099Y (en) | Electronic ballast | |
| CN201138888Y (en) | Electric power of high-power lamp | |
| CN203562974U (en) | Universal power supply suitable for new national-standard traffic signal lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN CITY ZHONGDIAN LIGHTING CO., LTD.; PATENT Free format text: FORMER NAME OR ADDRESS: ZHONGDIAN LIGHTING CO., LTD., SHENZHEN CITY; PATENTEE |
|
| CP03 | Change of name, title or address |
Address after: 7 floor, 12 South Road Lighting Center, hi tech Industrial Park, Guangdong, Shenzhen Province: 518057 Co-patentee after: Shenzhen Landlite Ligting MFG. Co., Ltd. Patentee after: Shenzhen city electric lighting Limited by Share Ltd Co-patentee after: Zhongzhao Lamp Producing Co., Ltd., Shenzhen City Address before: 7 floor, 12 South Road Lighting Center, hi tech Industrial Park, Guangdong, Shenzhen Province: 518057 Co-patentee before: Shenzhen Landlite Ligting MFG. Co., Ltd. Patentee before: Shenzhen Central Electric Lighting Co., Ltd. Co-patentee before: Zhongzhao Lamp Producing Co., Ltd., Shenzhen City |
|
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Shenzhen CE Lighting Co., Ltd. Assignor: Shenzhen CE Lighting Co., Ltd.|Shenzhen Landlite Ligting MFG. Co., Ltd.|Zhongzhao Lamp Producing Co., Ltd., Shenzhen City Contract fulfillment period: 2008.9.1 to 2015.7.25 Contract record no.: 2008440000332 Denomination of utility model: Two-purpose electronic transformer circuit Granted publication date: 20060906 License type: Exclusive license Record date: 20081107 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.9.1 TO 2015.7.25; CHANGE OF CONTRACT Name of requester: SHENZHEN CITY ZHONGDIAN ILLUMINATION CO., LTD. Effective date: 20081107 |
|
| CX01 | Expiry of patent term |
Expiration termination date: 20150725 Granted publication date: 20060906 |
|
| EXPY | Termination of patent right or utility model |