CN2653835Y - Eye-protection brain-protection fluorescent lamp control circuit - Google Patents
Eye-protection brain-protection fluorescent lamp control circuit Download PDFInfo
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- CN2653835Y CN2653835Y CN 200320106037 CN200320106037U CN2653835Y CN 2653835 Y CN2653835 Y CN 2653835Y CN 200320106037 CN200320106037 CN 200320106037 CN 200320106037 U CN200320106037 U CN 200320106037U CN 2653835 Y CN2653835 Y CN 2653835Y
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- fluorescent tube
- relay
- protection
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Abstract
The utility model relates to an eye and brain protecting fluorescent lamp controlling circuit, pertaining to the lighting lamp technique. The utility model is a double-pole double-throw relay circuit or two single-pole double-throw relays circuit; the two normal open contact terminals of the relay are respectively connected with the filaments on the two ends of the fluorescent lamp pipe; the filaments are respectively connected with a warm-up coil L3 and warm-up coil L4. The utility model at least comprises a direct current power supply circuit, a polarity converting circuit, a warm-up starting circuit and a standard constant flow circuit and so on. The two normal open contact terminals of the two single-pole double-throw relays of the polarity converting circuit are respectively connected with the two filaments of the fluorescent lamp pipe; the two coils of the warm-up starting circuit are series connected on the two filaments of the fluorescent lamp pipe. The polarity converting circuit consists of a D trigger, two triodes, and two relays. The warm-up starting circuit consists of a vibrating triode and a vibrating transformer. The standard constant current consists of a triode G4, a dividing resistance and a negative temperature coefficient thermal resistance and so on. The utility model has the advantages of small volume, low cost and low electricity consumption, ideally eliminating the phoresis of the lamp pipe, widely applicable for the controlling of various fluorescent lamps.
Description
Technical field
The utility model belongs to field of illumination lamp technology, more particularly relates to the improvement of fluorescent lamp control circuit.
Background technology
Existing DC fluorescent lamp pipe generally adopts four blade double-throw relay to change the polarity of fluorescent tube for overcoming electrophoresis.As everyone knows, four blade double-throw relay exists shortcomings such as volume is big, cost is high, the coil power consumption is many.If adopt a relay, coil consumed power when attracting state then, coil consumed power not when release condition, this working method can produce harmful effect to main circuit.
The purpose of this utility model; just be to overcome above-mentioned shortcoming and defect; a kind of polarity of utilizing dpdt relay to change fluorescent tube is provided; volume is little, cost is low, the power consumptive province; eliminate the electrophoresis of fluorescent tube more satisfactoryly, can protect the eye-protection brain-protection fluorescent lamp control circuit of human eye human brain preferably.
Summary of the invention
In order to achieve the above object, the utility model comprises relay and the circuit that is attached thereto.Said relay circuit is a kind of dpdt relay circuit or two single-pole double throw relay circuits.Two normally open contacts of relay connect the filament at fluorescent tube two ends respectively.The filament at fluorescent tube two ends also connects two pre-heat coil L3 and L4 respectively.
The polarity switch control circuit which comprises at least the DC power supply circuit that is connected with fluorescent tube, is connected with fluorescent tube with DC power supply circuit, the preheating starting circuit that is connected with fluorescent tube with foregoing circuit and the accurate constant-current circuit that is connected with fluorescent tube with foregoing circuit.Two single-pole double throw relay J 1 of polarity switch control circuit and two normally open contacts of J2 are connected respectively on the filament at fluorescent tube two ends, and two the coil L3 and the L4 of preheating starting circuit are connected in parallel on respectively on the filament at fluorescent tube two ends.
DC power supply circuit is three road output DC roads of low pressure 12V, middle pressure 24V, high pressure 100V.Two triode G1 that polarity switch control circuit mainly is connected with the Q output with the Q of d type flip flop respectively by the d type flip flop of integrated circuit (IC), base stage and G2, two relay J 1 that are connected with the collector electrode of two triodes respectively and J2 and normally open contact thereof are formed.Preheating starting circuit mainly is made up of generator triode G3 and oscillation transformer T.Accurate constant-current circuit by triode G4, be connected resistance R 14 on the emitter of triode G4, be connected resistance R 13 and R12 and R15 on the collector electrode of triode G4, two the series diode D9 and the D10 that are connected on the emitter junction of triode G4 formed.R13 is a kind of negative tempperature coefficient thermistor.
Basic design of the present utility model is that the two ends filament of fluorescent tube is used two groups of coil preheatings respectively, so just can come the reverse of polarity with dpdt relay.
The utility model adopts the dpdt double-pole double-throw (DPDT) circuit can finish the polar switching of fluorescent tube, and the little cost of its volume is low, and the coil power consumption also economizes.Also available two single-pole double throw relays make its coil alternate energisation, then can form constant current work.Also have ready conditions after this uses novel conversion to simplify and adopt the electronic switch reverse of polarity, as solid state relay.
The utility model provides a kind of polarity of utilizing dpdt relay to change fluorescent tube, and volume is little, cost is low, the power consumptive province, has eliminated the electrophoresis of fluorescent tube, and no electromagnetic radiation can be protected the fluorescent lamp control circuit of human eye human brain preferably.It can be widely used in the control of various fluorescent lamps.
Description of drawings
Fig. 1 is a functional-block diagram of the present utility model.
Fig. 2 is its circuit theory diagrams.
Embodiment
Embodiment 1.A kind of eye-protection brain-protection fluorescent lamp control circuit is as Fig. 1～shown in Figure 2.Square frame (1) is basic, normal, high straightening stream power supply, and low pressure is+12 volts, supplies with integrated circuit (IC).The middle pressure is+24 volts, supplies with two relay J 1 and J2.About high pressure+100 volt, for preheating starting circuit and fluorescent tube Y.Square frame (2) is a polarity switch control circuit, mainly change by a d type flip flop of integrated circuit (IC) (4013), the K switch of every switch lamp once, the state of d type flip flop is just changed once, its output Q and Q control triode G1 and G2 respectively, make one individual by a conducting, corresponding relays J1 and J2 discharge an adhesive with regard to one.Utilize the conversion of its corresponding contacts can finish the polar switching of fluorescent tube Y.Square frame (3) is a preheating starting circuit, mainly is made up of generator triode G3 and oscillation transformer T.Fluorescent tube is unignited before starting, the fluorescent tube no current, and then G4 conducting, collector voltage is very low.The base voltage of oscillating tube G3 is to be obtained by R15 and R12, D9, D10 dividing potential drop, and it is higher than emission voltage, so the G3 conducting.Because the correct excitation of feedback coil, circuit forms the higher-order of oscillation, and the electric current that coil L3 and L5 produce is two filaments of preheat fluorescent lamp pipe respectively, filament resistance increases rapidly, relevant voltage strengthens, and the high frequency voltage of L2 also rises on the high-tension coil, lights thereby fluorescent tube Y is started.Electric current is by the positive pole of the power supply end to end by L1, L2, J1 fluorescent tube Y, again through J2, G4 and R14 to negative pole.Square frame (4) is a current control circuit, forms accurate constant-current circuit by triode G4, resistance R 13, R14, R15 and diode D9, D10 (playing pressure stabilization function).
The collector resistance R13 of G4 pipe is (NTC) negative tempperature coefficient thermistor, and the excessive G4 of causing of 240V tube voltage drop managed that overheated dissipation power is excessive to be provided with when (190V) fluorescent tube flicker supply voltage was higher when preventing that supply voltage is low.When R13 rises by the less temperature that can not make of electric current during in low pressure, and cloudy value constant (at R13 normal temperature greatly about 3 kilo-ohms-5 kilo-ohms), thereby fluorescent tube does not glimmer when having guaranteed low pressure.During high pressure, the big resistance temperature of the electric current that passes through rises and resistance descends (when R13 spends at normal temperature 40 resistance in 500 Europe-1 kilo-ohm), has reduced the pressure drop of G4 pipe, that is has not only protected the G4 pipe but also reduced dissipation power and improved circuit efficiency.Thereby the Current Control that makes fluorescent tube is lighted the collector voltage rising of turn-on transistor G4 and is higher than G3 when fluorescent tube within a less normal range of operation, and fluorescent lamp is in normal operating conditions.Owing to be operated in stable DC operation state,, be that the optimal illumination of eyeshield is selected so this circuit can make fluorescent tube not produce stroboscopic and electromagenetic wave radiation.
D2 is a voltage-stabiliser tube among Fig. 2.Resistance R 10 is the PTC semistor, is in order to prevent that the aging fluorescent tube point of fluorescent tube from not working or oscillating tube is in oscillatory regime for a long time and damages added protection.When the R10 operate as normal because of G3 conduction time very short fluorescent tube light, so the electric current by R10 can not make its temperature rise.But when fluorescent tube can not be lighted, G3 vibrated for a long time, and electric current passes through for a long time, and R10 will generate heat.Its resistance becomes greatly thereupon, and the heat of generation is bigger, and finally its resistance becomes very big, and that electrorheological gets is very little, thereby has protected triode G3.
Electrochemical capacitor C1, C8, C10 are respectively the filter capacitors of basic, normal, high power supply.Low-tension supply is a halfwave rectifier, and middle pressure and high pressure are bridge rectifier.Capacitance size choose the size that depends primarily on selected relay J 1 and J2 coil voltage and electric current.Selected J1 of embodiment and J2 are the single-pole double throw relay.The main task of DC-isolation capacitor C 7 is voltage sources during the direct voltage that prevents high voltage source disturbs, and makes it can export more stable voltage.
Coil L3 and L4 connect the filament pre-heating at fluorescent tube two ends respectively, so just can change the polarity of fluorescent tube with dpdt relay, eliminate the power supply phenomenon of fluorescent tube.As adopt two single-pole double throw relay assemblies, and a relay conducting is always arranged, form the constant current operating state, so just might adopt the DC power supply of the method acquisition low voltage of capacitance decompression.Capacitor C 7 has played very important DC-isolation effect, because of in press and the shared negative pole of high voltage source, so can influence each other, cut off direct current after having added C7, two power supplys are just independent.Resistance R 13 (NTC) plays the effect of supply voltage height and balance, no matter make the work that the height of fluorescent tube supply voltage all can be stable.
Embodiment 1 volume is little, cost is low, the power consumptive province, has eliminated the electrophoresis of fluorescent tube more satisfactoryly, and no electromagnetic radiation has been protected the human eye human brain preferably.Can be widely used in the control of various fluorescent lamps.
Claims (4)
1. eye-protection brain-protection fluorescent lamp control circuit, it comprises relay and the circuit that is attached thereto, it is characterized in that said relay circuit is a kind of dpdt relay circuit or two single-pole double throw relay circuits, two normally open contacts of relay connect the filament at fluorescent tube two ends respectively, and the filament at fluorescent tube two ends also connects two pre-heat coil L3 and L4 respectively.
2. according to the described eye-protection brain-protection fluorescent of claim 1 lamp control circuit, it is characterized in which comprises at least the DC power supply circuit that is connected with fluorescent tube, the polarity switch control circuit that is connected with fluorescent tube with DC power supply circuit, preheating starting circuit that is connected with fluorescent tube with foregoing circuit and the accurate constant-current circuit that is connected with fluorescent tube with foregoing circuit, two single-pole double throw relay J 1 of polarity switch control circuit and two normally open contacts of J2 are connected respectively on the filament at fluorescent tube two ends, and two the coil L3 and the L4 of preheating starting circuit are connected in parallel on respectively on the filament at fluorescent tube two ends.
3. according to the described eye-protection brain-protection fluorescent of claim 2 lamp control circuit, it is characterized in that said DC power supply circuit is low pressure 12V, the middle 24V that presses, three road output DC roads of high pressure 100V, polarity switch control circuit is mainly by the d type flip flop of integrated circuit (IC), two triode G1 that base stage is connected with the Q output with the Q of d type flip flop respectively and G2, two relay J 1 that are connected with the collector electrode of two triodes respectively and J2 and normally open contact thereof are formed, preheating starting circuit mainly is made up of generator triode G3 and oscillation transformer T, accurate constant-current circuit is by triode G4, be connected the resistance R 14 on the emitter of triode G4, be connected resistance R 13 and R12 and R15 on the collector electrode of triode G4, two the series diode D9 and the D10 that are connected on the emitter junction of triode G4 form, and R13 is a kind of negative tempperature coefficient thermistor.
4. according to the described eye-protection brain-protection fluorescent of claim 3 lamp control circuit, it is characterized in that connecting a DC-isolation capacitor C 7 between earth terminal in the said DC power supply circuit and the middle breaking the bridge formula rectifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320106037 CN2653835Y (en) | 2003-10-08 | 2003-10-08 | Eye-protection brain-protection fluorescent lamp control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320106037 CN2653835Y (en) | 2003-10-08 | 2003-10-08 | Eye-protection brain-protection fluorescent lamp control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2653835Y true CN2653835Y (en) | 2004-11-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320106037 Expired - Fee Related CN2653835Y (en) | 2003-10-08 | 2003-10-08 | Eye-protection brain-protection fluorescent lamp control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2653835Y (en) |
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2003
- 2003-10-08 CN CN 200320106037 patent/CN2653835Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: BEIJING RENWOYING DIGITAL TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: HAIHAO MODERN LAMP CO., LTD., QINGDAO Effective date: 20060421 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20060421 Address after: 100085, room 3, building 6, building 601, Fang Fang Garden, west of Beijing, Haidian District Patentee after: Renwoying Digital Science and Technology Co., Ltd., Beijing Address before: 266101, Qingdao high tech Industrial Park, Zhuzhou, Shandong Road East Patentee before: Haihao Modern Lamp Co., Ltd., Qingdao |
|
| ASS | Succession or assignment of patent right |
Owner name: BEIJING TIANJIXING AEROSPACE SCIENCE & TECHNOLOGY Free format text: FORMER OWNER: BEIJING RENWOYING DIGITAL TECHNOLOGY CO., LTD. Effective date: 20061208 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20061208 Address after: 100080 No. 30 South Haidian Road, Beijing, Haidian District 706 Patentee after: Beijing Tianjixing Space Science and Technology Co., Ltd. Address before: 100085, room 3, building 6, building 601, Fang Fang Garden, west of Beijing, Haidian District Patentee before: Renwoying Digital Science and Technology Co., Ltd., Beijing |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041103 Termination date: 20101008 |