CN1674757B - Electromagnetic inductive lamp circuit - Google Patents
Electromagnetic inductive lamp circuit Download PDFInfo
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- CN1674757B CN1674757B CN 200510024047 CN200510024047A CN1674757B CN 1674757 B CN1674757 B CN 1674757B CN 200510024047 CN200510024047 CN 200510024047 CN 200510024047 A CN200510024047 A CN 200510024047A CN 1674757 B CN1674757 B CN 1674757B
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Abstract
The present invention discloses an electromagnetic induction lamp circuit which is connected with power supply and can be used for converting DC input into AC output to drive lamp tube of electromagnetic induction lamp. Said circuit includes the following circuits: boost-up rectification circuit, voltage-stabilizing circuit, oscillating circuit and start-up circuit. Said invention also provides the concrete action of the above-mentioned every circuit. Besides, said invented circuit also has overcurrent and overvoltage protection devices, and said invention can utilize power supply control processor to raise constance of light and service life of light source.
Description
Technical field
The present invention relates to electromagnetic inductive lamp circuit, relate in particular to a kind of electromagnetic inductive lamp circuit that is used for direct current 12V/24V power supply.
Background technology
Electromagnetic induction lamp belongs to electrodeless lamp, high light efficiency, long-life new-generation energy-saving product, in the outstanding advantage that this lamp is more arranged aspect emergency light, the solar lighting.Because electromagnetic induction lamp does not have filament, so in the application of low-voltage dc power supply, can thoroughly avoid the very short problem of DC electronic energy-saving lamp tube blackout, lamp tube service life.Low-voltage direct electronics electricity-saving lamp in use, under the low situation of supply voltage, there is glow discharge in the filament of fluorescent tube when starting, fluorescent tube light decay and life-span are very short.
Fig. 1 is a kind of partial circuit figure of electronic energy-saving lamp of prior art.As shown in the figure, at first be input to power-supply filter 106 and inductance filter 107 carries out filtering respectively from the input of DC power supply, triode 100 and 101 constitutes push-pull oscillator circuit, a winding of hunting power follower 102 provides drive signal for two triodes 100,101, be coupled by hunting power follower 102, hunting power follower 102 produces resonance condition with starter 104, and electromagnetic induction lamp fluorescent tube 105 is lighted.Above circuit is made of discrete component, and circuit stability is poor, not tool open circuit, short-circuit protection.And drive the square wave distortion, unfavorable to triode 100,101 normal uses, temperature rise, reliability is bad, lacks the sampling monitoring to light tube electric voltage, electric current, so can't export, keep stablizing of power stability and light output by permanent power.
And above-mentioned circuit can not use the direct current input of 12V/24V, also is a very big influence for the range of application of electronic energy-saving lamp.
Summary of the invention
The purpose of this invention is to provide a kind of electromagnetic inductive lamp circuit, its output that permanent power can be provided is stable with guaranteed output and light output, and can use the direct current input of 12V/24V.
According to the present invention, a kind of electromagnetic inductive lamp circuit is provided, link to each other with power supply, the direct current input is converted to exchanges output driving electromagnetic induction lamp fluorescent tube, this circuit comprises:
Boost rectifying circuit is connected to power supply, and the voltage of rising input DC power also carries out rectification;
Voltage stabilizing circuit links to each other with power supply with described boost rectifying circuit, and the voltage that makes described boost rectifying circuit is stable constant voltage;
Oscillating circuit links to each other with the output of described boost rectifying circuit, and direct voltage is converted to alternating voltage;
Start-up circuit links to each other with the output of described oscillating circuit, uses alternating voltage to drive electromagnetic induction lamp.
Boost rectifying circuit comprises in the described electromagnetic inductive lamp circuit:
Polarity controller links to each other with power supply, prevents the both positive and negative polarity wrong;
Half-bridge inverter links to each other with described polarity controller, and input voltage is carried out inversion;
The power supply central controller links to each other with described half-bridge inverter, controls described half-bridge inverter work;
Every straight coupler, link to each other with described half-bridge inverter;
The coupling stepup transformer links to each other every straight coupler with described, will raise by the direct voltage every straight coupler input;
Rectifier links to each other with described coupling stepup transformer, and rectification is carried out in the output of coupling stepup transformer.
Wherein, described polarity controller is a diode, and described half-bridge inversion circuit is two metal-oxide-semiconductors, and the output voltage of described coupling stepup transformer is 300V.
In the above-mentioned electromagnetic inductive lamp circuit, described voltage stabilizing circuit is a sampling comparator, is connected to described power supply central controller and described rectifier, constitutes the circuit of permanent power with described power supply central controller and rectifier.
Above-mentioned electromagnetic inductive lamp circuit, described oscillating circuit comprises:
Half bridge oscillator links to each other with the output of described boost rectifying circuit, and vibration forms alternating voltage;
Central processing unit links to each other with described half bridge oscillator, controls the work of described half bridge oscillator;
The current-voltage sampling device links to each other with described central processing unit, and the output of the described start-up circuit of also sampling also is input to central processing unit.
Wherein, described half bridge oscillator is two metal-oxide-semiconductors, and described central processing unit is the HY4501 chip.
In the above-mentioned electromagnetic induction lamp, described start-up circuit comprises:
Power take off links to each other with the output of described oscillating circuit;
Electromagnetic inductor links to each other with described power take off.
In the above-mentioned electromagnetic induction lamp, also comprise protective circuit, the electric current and voltage of sampling fluorescent tube cuts off circuit when appearance is unusual.
Wherein said protective circuit comprises resistance and an electric capacity.
Adopt above-mentioned technical scheme, this kind electromagnetic inductive lamp circuit reliability height has the sampling monitoring function to light tube electric voltage, electric current, can export, keep the stable of power stability and light output by permanent power.And above-mentioned circuit can use the direct current input of 12V/24V.
Description of drawings
The above and other feature of the present invention, character and advantage will be by becoming more obvious below in conjunction with accompanying drawing to the detailed description of embodiment, and identical in the accompanying drawings Reference numeral is represented identical feature, wherein:
Fig. 1 is the partial circuit figure of lamp of the electronic energy-saving lamp of prior art.
Fig. 2 is the circuit block diagram according to electromagnetic inductive lamp circuit of the present invention.
Fig. 3 is the circuit diagram according to electromagnetic inductive lamp circuit of the present invention.
Embodiment
Further describe technical scheme of the present invention below in conjunction with drawings and Examples.
Fig. 2 is the circuit block diagram of an embodiment 200 of electromagnetic inductive lamp circuit of the present invention.As shown in Figure 2,
This circuit 200 comprises: polarity controller 201, link to each other with the input power supply, and it is used to protect electric ballast, prevent the both positive and negative polarity wrong and be coupled with half-bridge inverter 203; Half-bridge inverter 203 is with 202 couplings of power supply central controller and by its control; Inversion is carried out in the input of the 203 pairs of power supply Russia of half-bridge inverter and by link coupling stepup transformer 205 every straight coupler 204, coupling stepup transformer 205 is used for boosted voltage, and the voltage after the rising is by rectifier 206 rectifications.In this embodiment, generate the steady direct voltage that is about 300V.Above-mentioned polarity controller 201, power supply central controller 202, half-bridge inverter 203, every straight coupler 204, coupling stepup transformer 205 and the rectifier 206 common boost rectifying circuits 212 of forming.Rectifier 206 is also linked power supply central controller 202 by sampling comparator 207, forms the circuit of permanent power, makes dc voltage stability about 300V.Above-mentioned sampling comparator 207 has constituted the voltage stabilizing circuit 213 in the present embodiment.The output of voltage stabilizing circuit 213 is connected to oscillating circuit 214, and in this embodiment, oscillating circuit 214 comprises half bridge oscillator 209, links to each other with the output of rectifier 206 in the boost rectifying circuit 212, and vibration forms alternating voltage; Central processing unit 208 links to each other with half bridge oscillator 209, the work of control half bridge oscillator 209; Current-voltage sampling device 210 links to each other with central processing unit 208, and the output of sampling start-up circuit also is input to central processing unit.Also comprise start-up circuit 215 among the embodiment 200 shown in Figure 2, it comprises power take off 212 and electromagnetic inductor 211.The output of half bridge oscillator 209 is connected to power take off 212, and links to each other with electromagnetic inductor 211 by power take off 212, makes electromagnetic induction lamp work.Current-voltage sampling device 210 sample again electromagnetic induction lamp 211 voltage and current and be input to central processing unit 208, guarantee the stable of whole lamp operating frequency and abnormity protection function be achieved.
Fig. 3 is the physical circuit figure according to electromagnetic inductive lamp circuit of the present invention.In Fig. 3, diode D5 is a polarity controller 201 shown in Figure 2, and its principle of utilizing the diode forward conducting oppositely to end is come protective circuit.Metal-oxide-semiconductor Q1, Q2 form semi-bridge inversion electrical equipment 203 shown in Figure 2, link to each other with chip IC 1 and provide the square wave driving signal of one group of symmetry by it.Chip IC 1 is a power supply central controller 202 shown in Figure 2.Capacitor C1 shown in Figure 3 is shown in Figure 2 every straight coupler 204, constitutes metal-oxide-semiconductor Q1, the Q2 one after the other switch of half-bridge inverter 203, by capacitor C1 filtering flip-flop, passes through alternating component.Many winding inductances T1 shown in Figure 3 is coupling stepup transformer 205 shown in Figure 2, and it is used for boosted voltage.Diode D1, D2 shown in Figure 3, D3, D4 constitute rectifier 206 shown in Figure 2, and it makes high-frequency ac output the becoming direct voltage stably of coupling stepup transformer 205.Sampling comparator 207 shown in Figure 2 is made of resistor R 1, R2 in Fig. 3, resistor R 1, R2 are connected between power supply central controller IC1 and rectifier D1, D2, D3, the D4, be used to make output dc voltage stable, power supply central controller IC1 regulates duty automatically and recently realizes permanent power.Half bridge oscillator 209 among Fig. 2 is made up of metal-oxide-semiconductor Q3, Q4 in Fig. 3, and they provide symmetrical square wave to make metal-oxide-semiconductor Q3, Q4 work by central processing unit 208.Central processing unit 208 is realized by chip HY4501 in Fig. 3.Half bridge oscillator is linked the electromagnetic inductor that is made of magnet ring L5 and is made its work by the power take off of being made up of capacitor C3 and inductor L1.Current-voltage sampling device shown in Figure 2 realizes that by capacitor C4 and resistor R 3 electromagnetic inductor L5 links central processing unit HY4501 by the current-voltage sampling device in Fig. 3, form closed-loop control, improves the functional reliability of electromagnetic induction lamp.It is under the abnormality that current-voltage sampling device C3, L1 can also be implemented in fluorescent tube, makes the central processing unit HY4501 failure of oscillations, thereby the protection integrated circuit avoids overcurrent, overvoltage to burn circuit, improves life of product.
Among the embodiment that illustrates in the above, the direct current of use is input as the direct current input of 12V/24V.
Electromagnetic induction lamp operating circuit of the present invention has thoroughly overcome all counting defectives of the direct voltage electricity-saving lamp of prior art.Even fluorescent tube is under the abnormality, circuit also has overcurrent, overvoltage protection, thereby makes a whole set of circuit can improve the constancy and the light source life of light by the power supply central processing unit.
Above embodiment provides to those of ordinary skill in the art and realizes and use of the present invention; those of ordinary skill in the art can be under the situation that does not break away from inventive concept; the foregoing description is modified or changes; thereby protection scope of the present invention do not limit by the foregoing description, but should meet the maximum magnitude of the character of innovation that claims mention.
Claims (11)
1. an electromagnetic inductive lamp circuit links to each other with power supply, the direct current input is converted to exchanges output driving electromagnetic induction lamp fluorescent tube, it is characterized in that, comprising:
Boost rectifying circuit is connected to power supply, and the voltage of rising input DC power also carries out rectification, and wherein this boost rectifying circuit comprises:
Polarity controller links to each other with power supply, prevents the both positive and negative polarity wrong;
Half-bridge inverter links to each other with described polarity controller, and input voltage is carried out inversion;
The power supply central controller links to each other with described half-bridge inverter, controls described half-bridge inverter work;
Every straight coupler, link to each other with described half-bridge inverter;
The coupling stepup transformer links to each other every straight coupler with described, will raise by the direct voltage every straight coupler input;
Rectifier links to each other with described coupling stepup transformer, and rectification is carried out in the output of coupling stepup transformer;
Voltage stabilizing circuit links to each other with power supply with described boost rectifying circuit, and the voltage that makes described boost rectifying circuit is stable constant voltage;
Oscillating circuit links to each other with the output of described boost rectifying circuit, and direct voltage is converted to alternating voltage;
Start-up circuit links to each other with the output of described oscillating circuit, uses alternating voltage to drive electromagnetic induction lamp.
2. electromagnetic inductive lamp circuit as claimed in claim 1 is characterized in that, described polarity controller is a diode.
3. electromagnetic inductive lamp circuit as claimed in claim 1 is characterized in that, described half-bridge inversion circuit is two metal-oxide-semiconductors.
4. electromagnetic inductive lamp circuit as claimed in claim 1 is characterized in that, the output voltage of described coupling stepup transformer is 300V.
5. electromagnetic inductive lamp circuit as claimed in claim 1 is characterized in that, described voltage stabilizing circuit is a sampling comparator, is connected to described power supply central controller and described rectifier, constitutes the circuit of permanent power with described power supply central controller and rectifier.
6. electromagnetic inductive lamp circuit as claimed in claim 1 is characterized in that, described oscillating circuit comprises:
Half bridge oscillator links to each other with the output of described boost rectifying circuit, and vibration forms alternating voltage;
Central processing unit links to each other with described half bridge oscillator, controls the work of described half bridge oscillator;
The current-voltage sampling device links to each other with described central processing unit, and the output of the described start-up circuit of also sampling also is input to central processing unit.
7. electromagnetic inductive lamp circuit as claimed in claim 6 is characterized in that, described half bridge oscillator is two metal-oxide-semiconductors.
8. electromagnetic inductive lamp circuit as claimed in claim 6 is characterized in that, described central processing unit is the HY4501 chip.
9. electromagnetic induction lamp as claimed in claim 1 is characterized in that, described start-up circuit comprises:
Power take off links to each other with the output of described oscillating circuit;
Electromagnetic inductor links to each other with described power take off.
10. electromagnetic induction lamp as claimed in claim 1 is characterized in that, also comprises protective circuit, and the electric current and voltage of sampling fluorescent tube cuts off circuit when appearance is unusual.
11. electromagnetic induction lamp as claimed in claim 10 is characterized in that, described protective circuit comprises resistance and an electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510024047 CN1674757B (en) | 2005-02-25 | 2005-02-25 | Electromagnetic inductive lamp circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510024047 CN1674757B (en) | 2005-02-25 | 2005-02-25 | Electromagnetic inductive lamp circuit |
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| Publication Number | Publication Date |
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| CN1674757A CN1674757A (en) | 2005-09-28 |
| CN1674757B true CN1674757B (en) | 2010-04-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200510024047 Expired - Fee Related CN1674757B (en) | 2005-02-25 | 2005-02-25 | Electromagnetic inductive lamp circuit |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201222484Y (en) * | 2008-06-18 | 2009-04-15 | 福建源光亚明电器有限公司 | Ring shaped electrodefree florescent lamp component with lamp holder |
| CN102157339A (en) * | 2010-02-11 | 2011-08-17 | 上海宝临防爆电器有限公司 | Electromagnetic induction type high-frequency electrodeless lamp |
| CN103167710B (en) * | 2013-03-28 | 2015-06-03 | 福州大学 | Self-excited open circuit and short circuit protection circuit for electromagnetic induction lamp |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1091890A (en) * | 1993-03-04 | 1994-09-07 | 南科电子有限公司 | Multipurpose section-selecting Christmas Day lamps controlling circuit |
| CN2506010Y (en) * | 2001-08-31 | 2002-08-14 | 慈溪市日威电器有限公司 | Electrodynamic induction charging equipment |
| CN2622984Y (en) * | 2003-06-04 | 2004-06-30 | 上海宏源照明电器有限公司 | Circuit of light dimming electromagnetic induction light |
| CN2774072Y (en) * | 2005-02-25 | 2006-04-19 | 上海宏源照明电器有限公司 | Circuit of electromagnetic induction light |
-
2005
- 2005-02-25 CN CN 200510024047 patent/CN1674757B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1091890A (en) * | 1993-03-04 | 1994-09-07 | 南科电子有限公司 | Multipurpose section-selecting Christmas Day lamps controlling circuit |
| CN2506010Y (en) * | 2001-08-31 | 2002-08-14 | 慈溪市日威电器有限公司 | Electrodynamic induction charging equipment |
| CN2622984Y (en) * | 2003-06-04 | 2004-06-30 | 上海宏源照明电器有限公司 | Circuit of light dimming electromagnetic induction light |
| CN2774072Y (en) * | 2005-02-25 | 2006-04-19 | 上海宏源照明电器有限公司 | Circuit of electromagnetic induction light |
Non-Patent Citations (2)
| Title |
|---|
| JP特开2001-93692A 2001.04.06 |
| JP特开2002-125324A 2002.04.26 |
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| CN1674757A (en) | 2005-09-28 |
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Owner name: JIANGSU LIDE LIGHTING INDUSTRIAL CO., LTD. Free format text: FORMER OWNER: SHANGHAI HONGYUAN LIGHTING + ELECTRIC EQUIPMENT CO., LTD. Effective date: 20111103 |
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Free format text: CORRECT: ADDRESS; FROM: 201802 JIADING, SHANGHAI TO: 224007 YANCHENG, JIANGSU PROVINCE |
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Effective date of registration: 20111103 Address after: 118 room 18, China Merchants Building, 224007 Songjiang Road, Yancheng Economic Development Zone, Jiangsu, Yancheng City Patentee after: Jiangsu Lide Lighting Industry Co., Ltd. Address before: 201802 Shanghai City Nanxiang really Road No. 5028 Patentee before: Shanghai Hongyuan Lighting & Electric Equipment Co., Ltd. |
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Granted publication date: 20100428 Termination date: 20150225 |
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