CN202587457U - Preheat circuit for energy-saving lamp - Google Patents
Preheat circuit for energy-saving lamp Download PDFInfo
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- CN202587457U CN202587457U CN 201220233515 CN201220233515U CN202587457U CN 202587457 U CN202587457 U CN 202587457U CN 201220233515 CN201220233515 CN 201220233515 CN 201220233515 U CN201220233515 U CN 201220233515U CN 202587457 U CN202587457 U CN 202587457U
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- diode
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- saving lamp
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- energy
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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
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The utility model relates to a preheat circuit for an energy-saving lamp. The preheat circuit for the energy-saving lamp comprises a capacitor C6, a capacitor C7, a diode D13 and a diode D14, wherein one end of the capacitor C6 is connected with an output end of a rectifier circuit, the other end of the capacitor C6 is connected with one end of the capacitor C7 through the diode D13, a negative electrode of the diode D14 is connected with the other end of the capacitor C7, a positive electrode of the diode D14 is connected with a collector electrode of a triode Q2 through an inductor L1 and an inductor WL3 which are connected in series, and lamp filaments at both ends of the energy-saving lamp are respectively connected in parallel with the diode D13 and the diode D14. The preheat circuit can carry out preheat processing on the energy-saving lamp, so start performance of the energy-saving lamp is improved, and service life of the energy-saving lamp is prolonged.
Description
Technical field
The utility model relates to a kind of electricity-saving lamp and uses preheat circuit, belongs to electronic technology field.
Background technology
At present, electricity-saving lamp has obtained extensive use, and traditional circuit for controlling economical light is that circuit form is simple, components and parts, and wiring board is second-rate.
In realizing process of the present invention, the inventor finds to exist at least in the prior art following problem: circuit performance is unstable, can't reach the coherent detection standard, and electricity-saving lamp does not have preheating, causes that startability is poor, lamp tube service life short.
The utility model content
The technical problem that the utility model will solve is to above deficiency; Provide a kind of electricity-saving lamp to use preheat circuit; It is poor to have overcome in the prior art pre-heat effect; Cause the defective that startability is poor, lamp tube service life is short, behind the preheat circuit of employing the utility model, the startability and the useful life of having improved electricity-saving lamp.
For solving above technical problem, the utility model adopts following technical scheme: a kind of electricity-saving lamp is used preheat circuit, it is characterized in that: said preheat circuit comprises capacitor C 6, capacitor C 7, diode D13 and diode D14;
The output of one termination rectification circuit of capacitor C 6, the other end of capacitor C 6 connect an end of capacitor C 7 through diode D13;
The negative pole of diode D14 connects the other end of capacitor C 7, and the positive pole of diode D14 is through the inductance L 1 of series connection, the oscillating circuit that inductance WL3 connects electricity-saving lamp;
The filament at electricity-saving lamp two ends is parallelly connected with diode D13 and diode D14 respectively.
After the utility model adopts above technical scheme, compared with prior art, have the following advantages: preheat circuit can carry out preheating with electricity-saving lamp, has improved startability, has prolonged lamp tube service life.
Below in conjunction with accompanying drawing and embodiment the utility model is elaborated.
Description of drawings
Accompanying drawing 1 is the circuit theory diagrams of electricity-saving lamp among the utility model embodiment;
Among the figure,
The 1-lightning protection circuit, 2-PFC control circuit, 3-oscillating circuit, 4-preheat circuit.
Embodiment
Embodiment, as shown in Figure 1, a kind of electricity-saving lamp is used preheat circuit, and electricity-saving lamp comprises rectification circuit, lightning protection circuit 1, PFC control circuit 2, preheat circuit 4 and oscillating circuit 3;
Rectification circuit comprises the rectification full-bridge that diode D1, diode D2, diode D3 and diode D4 form.
Lightning protection circuit 1 comprises the piezo-resistance RV, the protective tube FU that are connected in parallel on rectification circuit input end.
Oscillating circuit 3; Comprise resistance R 1, resistance R 2, resistance R 3, resistance R 4, resistance R 5, resistance R 6, capacitor C 4, capacitor C 5, diode D8, diode D9, diode D10, diode D11, diode D12, inductance WL1, inductance WL2, triode Q1, triode Q2 and two-way admittance diode DB; The output of one end of the negative pole of the collector electrode of triode Q1, diode D10, capacitor C 4, a termination rectification circuit of resistance R 3; The end of the base stage connecting resistance R1 of triode Q1, the negative pole of diode D8; The other end of resistance R 1 connects the positive pole of diode D8, an end of resistance R 2, the positive pole of diode D10, the other end of capacitor C 4, the other end of resistance R 3, the emitter of another termination triode Q1 of resistance R 2 through inductance WL1.
The positive pole of one terminating diode D8 of the negative pole of the negative pole of the collector electrode of triode Q2, diode D11, diode D12, resistance R 6; The end of the end of the base stage connecting resistance R4 of triode Q2, the negative pole of diode D9, two-way admittance diode DB; The other end of resistance R 4 connects the positive pole of diode D9, an end of resistance R 5, the positive pole of diode D11, an end of capacitor C 5 through inductance WL2; The emitter of another termination triode Q2 of resistance R 5, the other end of the positive pole of another terminating diode D12 of capacitor C 5, the other end of resistance R 6 and two-way admittance diode DB.
The 220V electric main gets into the bridge rectifier of being made up of diode D1, diode D2, diode D3 and diode D4 through protective tube FU, exports a pulsating direct current.This pulsating direct current is added on the pfc circuit.Export a stable DC voltage.Pfc circuit can make the ON time of diode D1, diode D2, diode D3 and diode D4 prolong, and complete machine PF value is brought up to more than 0.85 by original about 0.6.This direct voltage anode is capacitor C 5 chargings through resistance R 3, resistance R 6; Another road forms the loop over the ground through capacitor C 6, diode D13, capacitor C 7, energy-saving lamp filament, inductance L 1, inductance WL3, resistance R 6, capacitor C 5; Being the energy-saving lamp filament preheating, is capacitor C 5 chargings simultaneously.When the voltage at capacitor C 5 two ends reaches the conducting voltage of two-way admittance diode DB, two-way admittance diode DB conducting.Triode Q2 base voltage raises, triode Q2 conducting.Electric current forms the loop over the ground through collector electrode-emitter, the resistance R 5 of capacitor C 6, diode D13, capacitor C 7, energy-saving lamp filament, inductance L 1, inductance WL3, resistance R 6, triode Q2.Because of inductance WL1, inductance WL2, inductance WL3 are three windings of same transformer, produce negative just down induced electromotive force on the inductance WL2, for triode Q2 base stage provides positive feedback voltage, triode Q2 conducting degree is further increased, until saturated.Inductance WL1 produces and is just going up negative induced electromotive force down simultaneously, makes triode Q1 base stage keep low-voltage, is in cut-off state.Inductance WL3 electric current no longer increased after triode Q2 reached capacity.Along with the rising of capacitor C 6, capacitor C 7 charging voltages, inductance WL3 electric current begins to reduce, and inductance WL2 goes up to produce and just going up negative induced electromotive force down, and triode Q2 base voltage is reduced, and it is saturated that triode Q2 withdraws from, and gets into magnifying state.Inductance WL3 electric current further reduces, and inductance WL2 goes up to continue to produce and just going up negative induced electromotive force down, for triode Q2 base stage provides positive feedback, makes it get into cut-off state very soon.Produce negative just down induced electromotive force on the inductance WL1 simultaneously, make it become conducting, until saturated by ending.This moment, electric current formed loop through triode Q1 collector electrode-emitter, resistance R 2, inductance WL3, inductance L 1, diode D14, capacitor C 7, energy-saving lamp filament, capacitor C 6 to positive source by positive source.Circuit gets into the persistent oscillation state.Capacitor C 7 two ends produce higher pulse voltage and are added to lamp tube ends and make lamp tube starting, hereafter, and electric current no longer flow through energy-saving lamp filament and capacitor C 7, but directly flow in lamp tube ends, fluorescent tube is lasting luminous.
Those skilled in the art will recognize that; Above-mentioned embodiment is exemplary; Be in order to make those skilled in the art can better understand the utility model content; Should not be construed as is the restriction to the utility model protection range, so long as the improvement of being done according to the utility model technical scheme, all falls into the protection range of the utility model.
Claims (1)
1. an electricity-saving lamp is used preheat circuit, it is characterized in that: said preheat circuit comprises capacitor C 6, capacitor C 7, diode D13 and diode D14;
The output of one termination rectification circuit of capacitor C 6, the other end of capacitor C 6 connect an end of capacitor C 7 through diode D13;
The negative pole of diode D14 connects the other end of capacitor C 7, and the positive pole of diode D14 is through the inductance L 1 of series connection, the oscillating circuit that inductance WL3 connects electricity-saving lamp;
The filament at electricity-saving lamp two ends is parallelly connected with diode D13 and diode D14 respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220233515 CN202587457U (en) | 2012-05-23 | 2012-05-23 | Preheat circuit for energy-saving lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220233515 CN202587457U (en) | 2012-05-23 | 2012-05-23 | Preheat circuit for energy-saving lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202587457U true CN202587457U (en) | 2012-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220233515 Expired - Fee Related CN202587457U (en) | 2012-05-23 | 2012-05-23 | Preheat circuit for energy-saving lamp |
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| Country | Link |
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| CN (1) | CN202587457U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103313485A (en) * | 2013-06-27 | 2013-09-18 | 黄月华 | High-reliability energy-saving lamp electronic circuit |
| CN106163068A (en) * | 2015-04-28 | 2016-11-23 | 李少华 | Electronic ballast for fluoresent lamp protection circuit |
-
2012
- 2012-05-23 CN CN 201220233515 patent/CN202587457U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103313485A (en) * | 2013-06-27 | 2013-09-18 | 黄月华 | High-reliability energy-saving lamp electronic circuit |
| CN106163068A (en) * | 2015-04-28 | 2016-11-23 | 李少华 | Electronic ballast for fluoresent lamp protection circuit |
| CN106163068B (en) * | 2015-04-28 | 2018-09-07 | 李少华 | Electronic ballast for fluoresent lamp protects circuit |
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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: 20121205 Termination date: 20150523 |
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| EXPY | Termination of patent right or utility model |