CN2774072Y - Circuit of electromagnetic induction light - Google Patents
Circuit of electromagnetic induction light Download PDFInfo
- Publication number
- CN2774072Y CN2774072Y CN 200520039771 CN200520039771U CN2774072Y CN 2774072 Y CN2774072 Y CN 2774072Y CN 200520039771 CN200520039771 CN 200520039771 CN 200520039771 U CN200520039771 U CN 200520039771U CN 2774072 Y CN2774072 Y CN 2774072Y
- Authority
- CN
- China
- Prior art keywords
- circuit
- voltage
- links
- power supply
- output
- 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 - Fee Related
Links
Images
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
The utility model discloses a circuit of an electromagnetic induction light. The utility model which is connected with power supply converts direct-current input into alternating-current output to drive a light tube of the electromagnetic induction light. The utility model comprises a voltage raising rectifying circuit, a voltage stabilizing circuit, an oscillating circuit and a starting circuit, wherein the voltage raising rectifying circuit which is connected with the power supply raises the voltage of input direct-current power supply and rectifies the voltage of input direct-current power supply; the voltage stabilizing circuit is connected with the voltage raising rectifying circuit and the power supply and causes the voltage of the voltage raising rectifying circuit to be constant voltage; the oscillating circuit which is connected with the output of the voltage raising rectifying circuit converts direct-current voltage into alternating-current voltage; the starting circuit which is connected with the output of the oscillating circuit uses the alternating-current voltage to drive the electromagnetic induction light. The working circuit of the electromagnetic induction light of the utility model thoroughly overcomes all the design deficiencies of a direct-current voltage energy-saving light of the prior art. Even if the light tube is under an abnormal state, overcurrent and overvoltage of the circuits are also protected, and consequently, the complete set of circuits can enhance the constancy of light and the service life of light source by a central processing unit of the power supply.
Description
Technical field
The utility model relates to electromagnetic inductive lamp circuit, relates 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.
The utility model content
The purpose of this utility model provides a kind of electromagnetic inductive lamp circuit, and 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 utility model, 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 utility model, 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 utility model.
Fig. 3 is the circuit diagram according to electromagnetic inductive lamp circuit of the present utility model.
Embodiment
Further describe the technical solution of the utility model 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 utility model.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 utility model.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 utility model 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 utility model; those of ordinary skill in the art can be under the situation that does not break away from the utility model thought; the foregoing description is modified or changes; thereby protection range of the present utility model do not limit by the foregoing description, but should meet the maximum magnitude of the character of innovation that claims mention.
Claims (12)
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;
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 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.
3. electromagnetic inductive lamp circuit as claimed in claim 2 is characterized in that, described polarity controller is a diode.
4. electromagnetic inductive lamp circuit as claimed in claim 2 is characterized in that, described half-bridge inversion circuit is two metal-oxide-semiconductors.
5. electromagnetic inductive lamp circuit as claimed in claim 2 is characterized in that, the output voltage of described coupling stepup transformer is 300V.
6. electromagnetic inductive lamp circuit as claimed in claim 2 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.
7. 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.
8. electromagnetic inductive lamp circuit as claimed in claim 7 is characterized in that, described half bridge oscillator is two metal-oxide-semiconductors.
9. electromagnetic inductive lamp circuit as claimed in claim 7 is characterized in that, described central processing unit is the HY4501 chip.
10. 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.
11. electromagnetic induction lamp as claimed in claim 1 is characterized in that, also comprises protective circuit, the electric current and voltage of sampling fluorescent tube cuts off circuit when appearance is unusual.
12. electromagnetic induction lamp as claimed in claim 11 is characterized in that, described protective circuit comprises resistance and an electric capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520039771 CN2774072Y (en) | 2005-02-25 | 2005-02-25 | Circuit of electromagnetic induction light |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520039771 CN2774072Y (en) | 2005-02-25 | 2005-02-25 | Circuit of electromagnetic induction light |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2774072Y true CN2774072Y (en) | 2006-04-19 |
Family
ID=36709336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520039771 Expired - Fee Related CN2774072Y (en) | 2005-02-25 | 2005-02-25 | Circuit of electromagnetic induction light |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2774072Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1674757B (en) * | 2005-02-25 | 2010-04-28 | 上海宏源照明电器有限公司 | Electromagnetic inductive lamp circuit |
-
2005
- 2005-02-25 CN CN 200520039771 patent/CN2774072Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1674757B (en) * | 2005-02-25 | 2010-04-28 | 上海宏源照明电器有限公司 | Electromagnetic inductive lamp circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI466592B (en) | Light-emitting element lamp circuit | |
| WO2021088114A1 (en) | T-shaped tube-based led drive circuit | |
| CN107734778B (en) | LED driving power circuit and light emitting device | |
| CN1674757B (en) | Electromagnetic inductive lamp circuit | |
| CN103108457B (en) | High-frequency driver of light-emitting diode (LED) lamp | |
| CN2774072Y (en) | Circuit of electromagnetic induction light | |
| CN103313461B (en) | Replaceable electronic ballast lamp tube | |
| US7923941B2 (en) | Low cost compact size single stage high power factor circuit for discharge lamps | |
| CN203057664U (en) | High-performance long-life fluorescent lamp electronic ballast | |
| CN101541134A (en) | Drive circuit of low-voltage alternating-current fluorescent lamp | |
| CN205746190U (en) | Replaced type LED lamp tube | |
| CN201830535U (en) | Electronic ballast and energy-saving lamp | |
| CN101640966A (en) | Power supply circuit of fluorescent lamp | |
| CN201398262Y (en) | Drive circuit of low-voltage alternating current fluorescent lamp | |
| CN1386040A (en) | Low-harmonic compact type energy-saving lamp electronic ballast | |
| CN2738521Y (en) | Low-voltage AC/DC two-purpose fluorescent lamp ballast controller | |
| CN215734944U (en) | LED drive circuit and device based on class formula rectification filtering circuit | |
| CN201114953Y (en) | A fluorescent lamp circuit device | |
| CN2632986Y (en) | Electronic ballast | |
| CN200962687Y (en) | Pre-heating light-adjustable, and over-current protection magnetic amplifier electronic ballast | |
| CN201138888Y (en) | Electric power of high-power lamp | |
| CN2543321Y (en) | Low-cost electronic ballast for high-intensity gas discharge lamp | |
| KR101142271B1 (en) | Electronic stabilizer for channel sign adapting output voltage following loads | |
| CN2617119Y (en) | High power factor high-performance electronic ballast | |
| CN2699621Y (en) | An electronic ballast with life limit protection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060419 Termination date: 20110225 |