CN202005051U - Voltage feedback inverter circuit energy-saving lamp - Google Patents
Voltage feedback inverter circuit energy-saving lamp Download PDFInfo
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- CN202005051U CN202005051U CN2011200856502U CN201120085650U CN202005051U CN 202005051 U CN202005051 U CN 202005051U CN 2011200856502 U CN2011200856502 U CN 2011200856502U CN 201120085650 U CN201120085650 U CN 201120085650U CN 202005051 U CN202005051 U CN 202005051U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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Abstract
The utility model discloses a voltage feedback inverter circuit energy-saving lamp, which comprises a filter circuit, a switching circuit, a resonance circuit and a lamp tube. An output end of the filter circuit is connected with an input end of the switching circuit. The resonance circuit comprises a capacitor C3, a capacitor C5, an inductance L2 and a transformer coil T1a. The capacitor C3, the capacitor C5, the inductance L2 and the transformer coil T1a are connected in series between two output ends of the switching circuit sequentially. The capacitor C5 is connected in parallel with the lamp tube. One end of the capacitor C3 is connected with the output end of the filter circuit and the other end of the capacitor C3 is connected with one end of the lamp tube. The other end of the lamp tube is connected with the inductance L2. The voltage feedback inverter circuit energy-saving lamp has functions of energy saving, ballasting and inversion. The electronic circuit design is simple. Few components are used. The production cost is effectively reduced. The reliability is high. The voltage feedback inverter circuit energy-saving lamp has a follow current capacitor and can emit light continuously. The light emitting efficiency is improved. The service life is prolonged.
Description
Technical field
The utility model relates to a kind of electricity-saving lamp, especially a kind of Voltage Feedback formula inverter circuit electricity-saving lamp that adopts direct current supply.
Background technology
The DC power saving lamp is mainly used in the direct current supply condition of emergency lighting and solar powered illumination.The electricity-saving lamp of prior art generally adopts the self-excitation push-pull oscillator circuit, changes direct current into interchange, receives illuminating lamp tube through transformer output.No matter be that preheating type also is non-preheating type, overall structure is more complicated all, and is reliable inadequately when small-power starts, and also therefore has influence on the useful life of fluorescent tube.The common in addition electronic energy-saving lamp that adopts half-bridge inversion circuit in addition adopts half-bridge inversion circuit that direct voltage is converted to high frequency voltage, is used for driving two triode work and makes lamp luminescence.In two triode alternation processes, there is the cut-off state of a not conducting.When two triodes all during not conducting, it is not continuous flowing through lamp tube current, thereby the luminous of fluorescent tube neither be continuous.This just causes the filament in the fluorescent tube to sustain damage easily, make to form blackhead near filament, and light decay is bigger, has also influenced the useful life of fluorescent tube.
Therefore be necessary to develop a kind of novel Voltage Feedback formula inverter circuit electricity-saving lamp, make it have the function of energy-conservation, ballast, inversion, electronic circuitry design is simple, and the element consumption is few, effectively reduces production costs the reliability height; And have afterflow electric capacity, can be luminous continuously, improve luminous efficiency, increase the service life.
Summary of the invention
The utility model is at prior art problems, and a kind of function with energy-conservation, ballast, inversion is provided, and electronic circuitry design is simple, and the element consumption is few, effectively reduces production costs the reliability height; And have afterflow electric capacity, can be luminous continuously, improve luminous efficiency, the Voltage Feedback formula inverter circuit electricity-saving lamp that increases the service life.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
Described a kind of Voltage Feedback formula inverter circuit electricity-saving lamp comprises filter circuit, switching circuit, resonant circuit and fluorescent tube; The output of described filter circuit is connected with the input of described switching circuit, described resonant circuit comprises capacitor C 3, capacitor C 5, inductance L 2 and transformer coil T1a, described capacitor C 3, capacitor C 5, inductance L 2 and transformer coil T1a are in sequential series between two outputs of described switching circuit, and described capacitor C 5 is in parallel with described fluorescent tube, one end of described capacitor C 3 is connected with the output of described filter circuit, the other end is connected with an end of described fluorescent tube, and the other end of fluorescent tube is connected with described inductance L 2.
Further, described switching circuit comprises triode VT1 and triode VT2; The collector electrode of described triode VT1 is connected with the output of described filter circuit, and its emitter is connected with the collector electrode of described triode VT2, is connected with resistance R 2 and transformer coil T1b between its base stage and the emitter in turn; The grounded emitter of described triode VT2 is connected with resistance R 3 and transformer coil T1c in turn between its base stage and the emitter; The collector electrode of described triode VT1 and triode VT2 is respectively two outputs of described switching circuit.
Further, described switching circuit also comprises starting resistance R1, starts capacitor C 2, diode VD1 and diac VD2; Described starting resistance R1 and startup capacitor C 2 are connected between the output and ground of described filter circuit, described starting resistance R1 also is connected with the anode of described diode VD1 and the end of diac VD2 respectively with the tie point that starts capacitor C 2, the negative electrode of described diode VD1 is connected with the collector electrode of described triode VT2, and the other end of described diac VD2 is connected with the base stage of described triode VT2.
Further, described transformer coil T1a is coupled with transformer coil T1b, transformer coil T1c respectively.
Further, described filter circuit comprises filter capacitor C1.
Further, also be provided with filter capacitor C4 between described fluorescent tube and the ground.
The operation principle of a kind of Voltage Feedback formula inverter circuit electricity-saving lamp described in the utility model is: the DC power supply input voltage is added to the input of switching circuit after the filter capacitor C1 of filter circuit filtering, switching circuit is controlled two triode VT1, the work of VT2 alternate conduction, make resonant circuit respectively the upper and lower half period by different current path work.Resonant circuit is used for starting of oscillation and makes fluorescent tube carry out preheating respectively and puncture conducting luminous in the upper and lower half period of resonance.The back switching circuit that powers on is given through starting resistance R1 and is started capacitor C 2 chargings, and diac VD2 conducting when charging to the trigger voltage of diac VD2 makes triode VT2 obtain bias voltage and conducting.This moment, power supply input+VDC arrived ground to capacitor C 3, filament FL1, capacitor C 5, filament FL2, inductance L 2, transformer coil T1a and triode VT2, the formation current circuit, and electric current is to capacitor C 5 chargings; When electric current is flowed through transformer coil T1a, on transformer coil T1b, transformer coil T1c, induce back electromotive force, polarity is opposite with current direction, make transformer end one side of the same name produce voltage, thereby make triode VT1 obtain bias voltage and conducting, triode VT2 loses bias voltage and ends, when triode VT1 conducting, capacitor C 5 discharges, discharge loop is made up of filament FL1, capacitor C 3, triode VT1, transformer coil T1a, inductance L 2, filament FL2; Like this under the Voltage Feedback of transformer coil T1a, triode VT1, VT2 alternate conduction, make the LC series circuit generation resonance of forming by inductance L 2, capacitor C 3 and capacitor C 5, thereby capacitor C 5 two ends produce the high-voltage pulse of a 600-1200V, with lamp tube starting.
Advantage of the present utility model is: a kind of Voltage Feedback formula inverter circuit electricity-saving lamp is provided, has had the function of energy-conservation, ballast, inversion, electronic circuitry design is simple, and the element consumption is few, effectively reduces production costs the reliability height; And have afterflow electric capacity, can be luminous continuously, improve luminous efficiency, increase the service life.
Description of drawings
Fig. 1 is the system configuration block diagram of a kind of Voltage Feedback formula inverter circuit electricity-saving lamp described in the utility model;
Fig. 2 is the circuit theory diagrams of a kind of Voltage Feedback formula inverter circuit electricity-saving lamp described in the utility model.
The division mark is as follows in the accompanying drawing: 1, filter circuit; 2, switching circuit; 3, resonant circuit; 4, fluorescent tube.
Embodiment
As shown in Figure 1 and Figure 2, a kind of system configuration block diagram and circuit theory diagrams of Voltage Feedback formula inverter circuit electricity-saving lamp comprise filter circuit 1, switching circuit 2, resonant circuit 3 and fluorescent tube 4; The output of described filter circuit 1 is connected with the input of described switching circuit 2, described resonant circuit 3 comprises capacitor C 3, capacitor C 5, inductance L 2 and transformer coil T1a, described capacitor C 3, capacitor C 5, inductance L 2 and transformer coil T1a are in sequential series between two outputs of described switching circuit 2, and described capacitor C 5 is in parallel with described fluorescent tube 4, one end of described capacitor C 3 is connected with the output of described filter circuit 1, the other end is connected with an end of described fluorescent tube 4, and the other end of fluorescent tube 4 is connected with described inductance L 2.Described fluorescent tube 4 comprises filament FL1 and filament FL2, also is provided with filter capacitor C4 between filament FL1 and the ground.Described filter circuit 1 comprises filter capacitor C1, be used for power supply input carrying out ballast and filtering, described switching circuit 2 is used for selecting different current channels in the upper and lower half period of resonance, and described resonant circuit 2 is used to produce resonance and controls described fluorescent tube 4 in the upper and lower half period respectively and carry out preheating and puncture conducting lighting.
Described switching circuit 2 comprises triode VT1 and triode VT2; The collector electrode of described triode VT1 is connected with the output of described filter circuit 1, and its emitter is connected with the collector electrode of described triode VT2, is connected with resistance R 2 and transformer coil T1b between its base stage and the emitter in turn; The grounded emitter of described triode VT2 is connected with resistance R 3 and transformer coil T1c in turn between its base stage and the emitter; The collector electrode of described triode VT1 and triode VT2 is respectively two outputs of described switching circuit 2.
Described switching circuit 2 also comprises starting resistance R1, starts capacitor C 2, diode VD1 and diac VD2; Described starting resistance R1 and startup capacitor C 2 are connected between the output and ground of described filter circuit 1, described starting resistance R1 also is connected with the anode of described diode VD1 and the end of diac VD2 respectively with the tie point that starts capacitor C 2, the negative electrode of described diode VD1 is connected with the collector electrode of described triode VT2, and the other end of described diac VD2 is connected with the base stage of described triode VT2.
When external dc power is powered to electricity-saving lamp, input voltage is added to the input of switching circuit 2 after the filter capacitor C1 of filter circuit 1 filtering, give the startup capacitor C 2 chargings through starting resistance R1, when capacitor C 2 voltages rise to the trigger voltage of diac VD2, diac VD2 produces avalanche effect and punctures conducting immediately, capacitor C 2 makes triode VT2 obtain bias voltage and conducting to triode VT2 discharge.Produce a current path after the triode VT2 conducting: power supply input+VDC-＞capacitor C 3-＞filament FL1-＞capacitor C 5 chargings-＞filament FL2-＞inductance L 2-＞transformer coil T1a-＞triode VT2 collector electrode-＞triode VT2 emitter-＞ground, this process is first cycle of resonance, is used for the filament of fluorescent tube 4 is carried out preheating.
When triode VT2 collector current direction transient change, transformer coil T1a produces an induction back electromotive force for the two ends of transformer coil T1b, transformer coil T1c, polarity is opposite with current direction, make transformer end one side of the same name produce voltage, be thereby that transformer coil T1c induced electromotive force is low-voltage triode VT2 and loses bias voltage and end, make triode VT1 obtain bias voltage and conducting thereby transformer coil T1b induced electromotive force is high voltage; Start capacitor C 2 and trigger, it is under the low-potential state, thereby has stoped triggering again diac VD2 after triode VD1 and triode VT2 discharge; When triode VT1 conducting, current path is: capacitor C 5 discharge-＞filament FL1-＞capacitor C 3-＞triode VT1 collector electrode-＞triode VT1 emitter-＞transformer coil T1a-＞inductance L 2-＞filament FL2 punctures conducting; This process is second cycle of resonance, and fluorescent tube punctures conducting and lights.Capacitor C 5 can make fluorescent tube luminous continuously as afterflow electric capacity, improves luminous efficiency, has prolonged fluorescent tube useful life
Obviously the foregoing description is not to restriction of the present utility model, and above-mentioned a kind of Voltage Feedback formula inverter circuit electricity-saving lamp can also have other many variations.Though gone through the utility model in conjunction with above-mentioned example, some that should be understood that professional person in the industry can expect apparently are identical, and alternative scheme all falls within the protection range that the utility model claim limited.
Claims (6)
1. a Voltage Feedback formula inverter circuit electricity-saving lamp is characterized in that, comprises filter circuit (1), switching circuit (2), resonant circuit (3) and fluorescent tube (4); The output of described filter circuit (1) is connected with the input of described switching circuit (2), described resonant circuit (3) comprises capacitor C 3, capacitor C 5, inductance L 2 and transformer coil T1a, described capacitor C 3, capacitor C 5, inductance L 2 and transformer coil T1a are in sequential series between two outputs of described switching circuit (2), and described capacitor C 5 is in parallel with described fluorescent tube (4), one end of described capacitor C 3 is connected with the output of described filter circuit (1), and the other end is connected with an end of described fluorescent tube (4); The other end of fluorescent tube (4) is connected with described inductance L 2.
2. Voltage Feedback formula inverter circuit electricity-saving lamp according to claim 1 is characterized in that described switching circuit (2) comprises triode VT1 and triode VT2; The collector electrode of described triode VT1 is connected with the output of described filter circuit (1), and its emitter is connected with the collector electrode of described triode VT2, is connected with resistance R 2 and transformer coil T1b between its base stage and the emitter in turn; The grounded emitter of described triode VT2 is connected with resistance R 3 and transformer coil T1c in turn between its base stage and the emitter; The collector electrode of described triode VT1 and triode VT2 is respectively two outputs of described switching circuit (2).
3. Voltage Feedback formula inverter circuit electricity-saving lamp according to claim 1 is characterized in that, described switching circuit (2) also comprises starting resistance R1, starts capacitor C 2, diode VD1 and diac VD2; Described starting resistance R1 and startup capacitor C 2 are connected between the output and ground of described filter circuit (1), described starting resistance R1 also is connected with the anode of described diode VD1 and the end of diac VD2 respectively with the tie point that starts capacitor C 2, the negative electrode of described diode VD1 is connected with the collector electrode of described triode VT2, and the other end of described diac VD2 is connected with the base stage of described triode VT2.
4. Voltage Feedback formula inverter circuit electricity-saving lamp according to claim 1 is characterized in that described transformer coil T1a is of coupled connections with transformer coil T1b, transformer coil T1c respectively.
5. Voltage Feedback formula inverter circuit electricity-saving lamp according to claim 1 is characterized in that described filter circuit (1) comprises filter capacitor C1.
6. Voltage Feedback formula inverter circuit electricity-saving lamp according to claim 1 is characterized in that, also is provided with filter capacitor C4 between described fluorescent tube (4) and the ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200856502U CN202005051U (en) | 2011-03-28 | 2011-03-28 | Voltage feedback inverter circuit energy-saving lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200856502U CN202005051U (en) | 2011-03-28 | 2011-03-28 | Voltage feedback inverter circuit energy-saving lamp |
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| Publication Number | Publication Date |
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| CN202005051U true CN202005051U (en) | 2011-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011200856502U Expired - Fee Related CN202005051U (en) | 2011-03-28 | 2011-03-28 | Voltage feedback inverter circuit energy-saving lamp |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104022649A (en) * | 2013-03-01 | 2014-09-03 | 深圳市海洋王照明工程有限公司 | 110V/220V dual-purpose power supply device and illuminating lamp |
-
2011
- 2011-03-28 CN CN2011200856502U patent/CN202005051U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104022649A (en) * | 2013-03-01 | 2014-09-03 | 深圳市海洋王照明工程有限公司 | 110V/220V dual-purpose power supply device and illuminating lamp |
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| 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: 20111005 Termination date: 20150328 |
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| EXPY | Termination of patent right or utility model |