CN102917524A - Preheating control circuit for filaments of fluorescent lamp - Google Patents
Preheating control circuit for filaments of fluorescent lamp Download PDFInfo
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- CN102917524A CN102917524A CN2012103778148A CN201210377814A CN102917524A CN 102917524 A CN102917524 A CN 102917524A CN 2012103778148 A CN2012103778148 A CN 2012103778148A CN 201210377814 A CN201210377814 A CN 201210377814A CN 102917524 A CN102917524 A CN 102917524A
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Abstract
The invention discloses a preheating control circuit for filaments of a fluorescent lamp, relates to the technical field of fluorescent circuits, and solves the problem that a conventional preheating control circuit for filaments of a fluorescent lamp is complicated. The circuit includes the filaments, a switch element and an electronic controller, wherein the electronic controller controls the on-off of the switch element, the filaments and the switching element form a direct current channel by a rectifier bridge, and the electronic controller is driven by a self-created direct current power supply. By using the self-created direct current power supply to drive the electronic controller, the circuit is simplified, and the cost is saved.
Description
[technical field]
The present invention relates to the fluorescent lamp circuit technical field, refer to especially a kind of Filament of fluorescent lamp Warming-up control circuit.
[background technology]
The basic situation that current fluorescent lamp uses is that the life-span is not long, and efficiency is not high, with the huge use amount of present fluorescent lamp, such situation significant wastage resource with polluted environment.Existing fluorescent lamp mostly is the hot cathode type fluorescent lamp of high-frequency work, different requirements according to fluorescent tube and power, in the regular hour scope, can carry out preheating to filament, make it to reach the optimum temperature of thermionic emission, be fit to start lamp works after the cathode primary electron emission, could effectively guarantee and prolong the useful life of fluorescent tube.In the prior art, the Filament of fluorescent lamp preheat circuit mainly contains following several: 1, provide preheating with ptc resistance; 2, use the frequency converting and preheating of separated exciting oscillating circuit; 3, use the access of relay contact control capacitor with the control preheating.There is following main drawback in above-mentioned preheat circuit: 1, power consumption is large, poor reliability, and pre-heat effect is undesirable; 2, circuit is complicated, and cost is high.
For this reason, the famous Warming-up control circuit that is called fluorescent lamp, application number is that 200520085389.0 Chinese patent discloses a kind of scheme with switch element control filament DC loop break-make, the filament DC loop is connected the beginning preheating filament, cutting off the preheating of filament DC loop finishes, in this scheme, the ON time of switch element is controlled by electronic controller, and then the warm-up time of control filament, electronic controller has mainly comprised a positive-negative-positive triode and a NPN type triode, positive-negative-positive transistor base has wherein connected electric capacity, electric capacity has connected again the both positive and negative polarity of DC power supply, utilizes the level height time of electric capacity output signal of voltage time control electronic controller from low to high in charging process and then the ON time of control switch element.But, the Warming-up control circuit of above-mentioned fluorescent lamp not only needs an external DC power supply to drive electronic controller, and filament and controller share a DC power supply with the starter filament, so must in DC power supply with connecting inverter and transformer between the filament, cause like this circuit still comparatively complicated.
[summary of the invention]
For addressing the above problem, the invention provides a kind of Filament of fluorescent lamp Warming-up control circuit, it can carry from fluorescent lamp, and power taking also becomes the constant voltage dc source that can drive electronic controller through rectification the circuit, simplify existing circuit, while good reliability of the present invention, the filament pre-heating effect is also better.
Technical scheme of the present invention is as follows: a kind of Filament of fluorescent lamp Warming-up control circuit, comprise filament, switch element and electronic controller, described electronic controller is controlled the break-make of described switch element, described filament and switch element form DC channel through a rectifier bridge stack, and described electronic controller is driven by an automatic electricity getting DC power supply.Add alternating current on the filament, after rectifier bridge stack, become direct current, the break-make of switch element control filament DC channel, switch element is connected, and begins filament is carried out preheating, and switch element disconnects, filament is starter voluntarily, and switch element is by the time length of electronic controller control break-make.Described automatic electricity getting DC power supply refers to that power taking need not external direct current power supply and drives electronic controller also through the DC power supply of rectifying and voltage-stabilizing from the own circuit of fluorescent lamp, has simplified circuit, has saved cost.
As a further improvement on the present invention and optimize, can take following measures.
In the described automatic electricity getting DC power supply, comprise the ballast inductance that fluorescent lamp circuit carries, the alternating current of the auxiliary winding output of described ballast inductance is direct current of voltage regulation through a rectification stable pressuring unit circuit rectification.
In the described automatic electricity getting DC power supply, comprise the pulse transformer that fluorescent lamp circuit carries, the alternating current of the auxiliary winding output of described pulse transformer is direct current of voltage regulation through a rectification stable pressuring unit circuit rectification.
In the described rectification stable pressuring unit circuit, comprise a diode and a three-terminal voltage-stabilizing pipe, described diode cathode connects auxiliary winding one end of described ballast inductance or auxiliary winding one end of pulse transformer, described diode cathode connects the input of three-terminal voltage-stabilizing pipe, and the output output direct current of voltage regulation of described three-terminal voltage-stabilizing pipe drives described electronic controller.
In the described electronic controller, the series arm that one resistance and an electric capacity form is parallel to the output and ground of three-terminal voltage-stabilizing pipe, the tie point of described resistance and electric capacity links to each other with the base stage of a NPN type triode I, the collector electrode of described NPN type triode I is connected with the output of three-terminal voltage-stabilizing pipe through a resistance I, the emitter of described NPN type triode I connects the earth terminal of three-terminal voltage-stabilizing pipe, the collector electrode of described NPN type triode I links to each other with the base stage of the tie point of resistance I with a NPN type triode II, described NPN type triode II emitter connects the earth terminal of three-terminal voltage-stabilizing pipe, the collector electrode of described NPN type triode II is connected with the output of described three-terminal voltage-stabilizing pipe through a resistance II on the one hand, is connected with the control end of described switch element on the other hand and exports control signal to it.
The collector electrode of described NPN type triode II is connected with the output of three-terminal voltage-stabilizing pipe through a resistance II on the one hand, base stage with a NPN type triode III links to each other on the other hand, the emitter of described NPN type triode III connects the earth terminal of three-terminal voltage-stabilizing pipe, the collector electrode of described NPN type triode III is connected with the output of described three-terminal voltage-stabilizing pipe through a resistance III on the one hand, is connected on the other hand the output control signal with the control end of described switch element.
Described switch element is a high-voltage three-pole pipe, the base stage of described high pressure triode connects the collector electrode of described NPN type triode III, the emitter of described high pressure triode connects the earth terminal of described three-terminal voltage-stabilizing pipe on the one hand, the negative pole that connects on the other hand described rectifier bridge stack, the collector electrode of described high pressure triode connects the positive pole of described rectifier bridge stack.
The auxiliary winding of the earth terminal of the negative pole of described rectifier bridge stack, described three-terminal voltage-stabilizing pipe and the auxiliary winding of described ballast inductance or pulse transformer altogether.Altogether, can drive described high-voltage three-pole pipe by bootstrap approach.
An electric capacity in parallel between described three-terminal voltage-stabilizing pipe and described diode tie point and three-terminal voltage-stabilizing pipe earth terminal, an electric capacity in parallel between the output and ground of described three-terminal voltage-stabilizing pipe.
Between described switch element and rectifier bridge stack, be connected in series a variable resistor and regulate the electric current of process, satisfy the demand of different Filament of fluorescent lamp preheat curents.
Compared with prior art, outstanding advantages of the present invention is: drive electronic controller by the automatic electricity getting DC power supply, need not external power supply, filament starting circuit and DC channel have separately been simplified circuit; For guaranteeing the reliability of preheat circuit, there are two NPN type triodes that control signal is carried out waveform shaping in the electronic controller; The high-voltage three-pole pipe that is used as switch element drives by bootstrap approach, can further simplify circuit.
[description of drawings]
Below in conjunction with the drawings and specific embodiments the present invention is described in detail.
Fig. 1 is theory diagram of the present invention;
Fig. 2 is concrete schematic circuit of the present invention.
[embodiment]
Referring to Fig. 1, the present invention includes filament, switch element and electronic controller, described electronic controller is controlled the break-make of described switch element, and described filament and switch element form DC channel through a rectifier bridge stack 1, and described electronic controller is driven by an automatic electricity getting DC power supply.Add alternating current on the filament, become direct current after rectifier bridge stack 1, when switch element was connected the DC channel of filament, filament began preheating, and when switch element disconnected the DC channel of filament, filament began starter.Controlled by electronic controller the warm-up time of filament, and the length of warm-up time can be controlled the temperature that filament can reach through preheating.Described automatic electricity getting DC power supply refers to the DC power supply that rectifying and voltage-stabilizing is also passed through in power taking from the own circuit of fluorescent lamp, need not again, external direct current power supply drives electronic controller, the starting circuit of filament separates with DC channel, has simplified circuit, has saved cost.
Referring to Fig. 2, concrete circuit connection diagram of the present invention, in the described automatic electricity getting DC power supply, comprise the ballast inductance that fluorescent lamp circuit carries or the pulse transformer that carries, the alternating current of the auxiliary winding Ll output of said two devices is direct current of voltage regulation through a rectification stable pressuring unit circuit rectification.In described rectification stable pressuring unit circuit, comprise a diode D1 and a three-terminal voltage-stabilizing pipe U1, anodal auxiliary winding L1 one end that connects described ballast inductance or pulse transformer of described diode D1, described diode cathode D1 connects the input Vin of three-terminal voltage-stabilizing pipe, and the output end vo ut output direct current of voltage regulation of described three-terminal voltage-stabilizing pipe U1 drives described electronic controller.In the described electronic controller, the series arm that one resistance R 5 and a capacitor C 1 form is parallel to output end vo ut and the earth terminal GND of three-terminal voltage-stabilizing pipe U1, the tie point of described resistance R 5 and capacitor C 1 links to each other with the base stage of a NPN type triode I Q1, the collector electrode of described NPN type triode I Q1 is connected with the output end vo ut of three-terminal voltage-stabilizing pipe U1 through a resistance I R1, the emitter of described NPN type triode I Q1 connects the earth terminal GND of three-terminal voltage-stabilizing pipe U1, the collector electrode of described NPN type triode I Q1 links to each other with the base stage of the tie point of resistance I R1 with a NPN type triode II Q2, described NPN type triode II Q2 emitter connects the earth terminal GND of three-terminal voltage-stabilizing pipe U1, the collector electrode of described NPN type triode II Q2 is connected with the output end vo ut of described three-terminal voltage-stabilizing pipe U1 through a resistance II R2 on the one hand, is connected with the control end of described switch element on the other hand.Resistance R 5 and capacitor C 1 consist of delay circuit, in capacitor C 1 charging process, the level of the base stage of NPN type triode I Q1 is raise by low, become conducting by not conducting, can control NPN type triode II Q2 conducting state by the collector electrode output signal of NPN type triode I Q1, thereby the control signal of the collector electrode output of control NPN type triode II Q2, NPN type triode II Q2 can carry out waveform shaping to the control signal that the collector electrode of NPN type triode I Q1 is exported.
The collector electrode of described NPN type triode II Q2 is connected with the output end vo ut of three-terminal voltage-stabilizing pipe U1 through a resistance II R2 on the one hand, base stage with a NPN type triode III Q3 links to each other on the other hand, the emitter of described NPN type triode III Q3 connects the earth terminal GND of three-terminal voltage-stabilizing pipe U1, the collector electrode of described NPN type triode III Q3 is connected with the output end vo ut of described three-terminal voltage-stabilizing pipe U1 through a resistance III R3 on the one hand, is connected on the other hand the output control signal with the control end of described switch element.In order to obtain more stable control signal, connect again a triode control signal is carried out waveform shaping.
Described switch element is a high-voltage three-pole pipe Q4, the base stage of described high pressure triode Q4 connects the collector electrode of described NPN type triode III Q3, the emitter of described high pressure triode Q4 connects the earth terminal GND of described three-terminal voltage-stabilizing pipe U1 on the one hand, the negative pole that connects on the other hand described rectifier bridge stack 1, the collector electrode of described high pressure triode Q4 connects the positive pole of described rectifier bridge stack 1.The earth terminal GND of the negative pole of described rectifier bridge stack 1, described three-terminal voltage-stabilizing pipe U1 and the auxiliary winding L1 of described ballast inductance or pulse transformer are altogether.Filament LP1, LP2 be upper connect be high voltage source, therefore switch element has adopted high-voltage three-pole pipe Q4, by described rectifier bridge stack 1, described three-terminal voltage-stabilizing pipe U1 and described auxiliary winding L1 altogether, can drive high-voltage three-pole pipe Q4 by the mode of bootstrapping, further simplify circuit.
A capacitor C 2 in parallel between described three-terminal voltage-stabilizing pipe U1 and described diode D1 tie point and three-terminal voltage-stabilizing pipe U1 earth terminal, a capacitor C 3 in parallel between the output end vo ut of described three-terminal voltage-stabilizing pipe U1 and earth terminal GND.Capacitor C 2 and capacitor C 3 can be carried out filtering and be kept voltage stabilization.
For satisfying the demand of different Filament of fluorescent lamp preheat curents, between described switch element and rectifier bridge stack 1, be connected in series a variable resistor R4.
Claims (10)
1. Filament of fluorescent lamp Warming-up control circuit, comprise filament (LP1, LP2), switch element and electronic controller, described electronic controller is controlled the break-make of described switch element, it is characterized in that: described filament (LP1, LP2) forms DC channel with switch element through a rectifier bridge stack (1), and described electronic controller is driven by an automatic electricity getting DC power supply.
2. Filament of fluorescent lamp Warming-up control circuit according to claim 1, it is characterized in that: in the described automatic electricity getting DC power supply, comprise the ballast inductance that fluorescent lamp circuit carries, the alternating current of the auxiliary winding output of described ballast inductance is direct current of voltage regulation through a rectification stable pressuring unit circuit rectification.
3. Filament of fluorescent lamp Warming-up control circuit according to claim 1, it is characterized in that: in the described automatic electricity getting DC power supply, comprise the pulse transformer that fluorescent lamp circuit carries, the alternating current of the auxiliary winding output of described pulse transformer is direct current of voltage regulation through a rectification stable pressuring unit circuit rectification.
4. according to claim 2 or 3 described Filament of fluorescent lamp Warming-up control circuits, it is characterized in that: in the described rectification stable pressuring unit circuit, comprise a diode (D1) and a three-terminal voltage-stabilizing pipe (U1), anodal auxiliary winding one end of described ballast inductance or auxiliary winding one end of pulse transformer of connecting of described diode (D1), described diode cathode (D1) connects the input (Vin) of three-terminal voltage-stabilizing pipe, and output (Vout) the output direct current of voltage regulation of described three-terminal voltage-stabilizing pipe (U1) drives described electronic controller.
5. Filament of fluorescent lamp Warming-up control circuit according to claim 4, it is characterized in that: in the described electronic controller, the series arm that one resistance (R5) and an electric capacity (C1) form is parallel to output (Vout) and the earth terminal (GND) of three-terminal voltage-stabilizing pipe (U1), the tie point of described resistance (R5) and electric capacity (C1) links to each other with the base stage of a NPN type triode I (Q1), the collector electrode of described NPN type triode I (Q1) is connected with the output (Vout) of three-terminal voltage-stabilizing pipe (U1) through a resistance I (R1), the emitter of described NPN type triode I (Q1) connects the earth terminal (GND) of three-terminal voltage-stabilizing pipe (U1), the collector electrode of described NPN type triode I (Q1) links to each other with the base stage of a NPN type triode II (Q2) with the tie point of resistance I (R1), described NPN type triode II (Q2) emitter connects the earth terminal (GND) of three-terminal voltage-stabilizing pipe (U1), the collector electrode of described NPN type triode II (Q2) is connected with the output (Vout) of described three-terminal voltage-stabilizing pipe (U1) through a resistance II (R2) on the one hand, is connected with the control end of described switch element on the other hand.
6. Filament of fluorescent lamp Warming-up control circuit according to claim 5, it is characterized in that: the collector electrode of described NPN type triode II (Q2) is connected with the output (Vout) of three-terminal voltage-stabilizing pipe (U1) through a resistance II (R2) on the one hand, base stage with a NPN type triode III (Q3) links to each other on the other hand, the emitter of described NPN type triode III (Q3) connects the earth terminal (GND) of three-terminal voltage-stabilizing pipe (U1), the collector electrode of described NPN type triode III (Q3) is connected with the output (Vout) of described three-terminal voltage-stabilizing pipe (U1) through a resistance III (R3) on the one hand, is connected on the other hand the output control signal with the control end of described switch element.
7. Filament of fluorescent lamp Warming-up control circuit according to claim 6, it is characterized in that: described switch element is a high-voltage three-pole pipe (Q4), the base stage of described high pressure triode (Q4) connects the collector electrode of described NPN type triode III (Q3), the emitter of described high pressure triode (Q4) connects the earth terminal (GND) of described three-terminal voltage-stabilizing pipe (U1) on the one hand, the negative pole that connects on the other hand described rectifier bridge stack (1), the collector electrode of described high pressure triode (Q4) connects the positive pole of described rectifier bridge stack (1).
8. Filament of fluorescent lamp Warming-up control circuit according to claim 7, it is characterized in that: the auxiliary winding of the earth terminal (GND) of the negative pole of described rectifier bridge stack (1), described three-terminal voltage-stabilizing pipe (U1) and the auxiliary winding of described ballast inductance or pulse transformer altogether.
9. according to claim 5 to 7 each described Filament of fluorescent lamp Warming-up control circuits, it is characterized in that: an electric capacity in parallel (C2) between described three-terminal voltage-stabilizing pipe (U1) and described diode (D1) tie point and three-terminal voltage-stabilizing pipe (U1) earth terminal, an electric capacity in parallel (C3) between the output (Vout) of described three-terminal voltage-stabilizing pipe (U1) and earth terminal (GND).
10. Filament of fluorescent lamp Warming-up control circuit according to claim 1 is characterized in that: be connected in series a variable resistor (R4) between described switch element and rectifier bridge stack (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103778148A CN102917524A (en) | 2012-10-08 | 2012-10-08 | Preheating control circuit for filaments of fluorescent lamp |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012103778148A CN102917524A (en) | 2012-10-08 | 2012-10-08 | Preheating control circuit for filaments of fluorescent lamp |
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| CN102917524A true CN102917524A (en) | 2013-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012103778148A Pending CN102917524A (en) | 2012-10-08 | 2012-10-08 | Preheating control circuit for filaments of fluorescent lamp |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6255785B1 (en) * | 1999-10-25 | 2001-07-03 | Changgen Yang | High power factor electronic ballast with low lamp current peak ratio |
| CN2807695Y (en) * | 2005-07-13 | 2006-08-16 | 青岛伏科太阳能有限公司 | Warming-up control circuit of fluorescence lamp |
| CN201167024Y (en) * | 2008-03-12 | 2008-12-17 | 山东大学 | Self-generation device of a robot for polling a high tension power line |
| CN102264184A (en) * | 2011-08-19 | 2011-11-30 | 青岛中科天为光电有限公司 | Electronic ballast for fluorescent lamp |
| CN202799357U (en) * | 2012-10-08 | 2013-03-13 | 杭州鸿雁电器有限公司 | Fluorescent lamp filament preheating control circuit |
-
2012
- 2012-10-08 CN CN2012103778148A patent/CN102917524A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6255785B1 (en) * | 1999-10-25 | 2001-07-03 | Changgen Yang | High power factor electronic ballast with low lamp current peak ratio |
| CN2807695Y (en) * | 2005-07-13 | 2006-08-16 | 青岛伏科太阳能有限公司 | Warming-up control circuit of fluorescence lamp |
| CN201167024Y (en) * | 2008-03-12 | 2008-12-17 | 山东大学 | Self-generation device of a robot for polling a high tension power line |
| CN102264184A (en) * | 2011-08-19 | 2011-11-30 | 青岛中科天为光电有限公司 | Electronic ballast for fluorescent lamp |
| CN202799357U (en) * | 2012-10-08 | 2013-03-13 | 杭州鸿雁电器有限公司 | Fluorescent lamp filament preheating control circuit |
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Inventor after: Zheng Xiguang Inventor after: Xie Jianbing Inventor after: Wu Yihui Inventor after: Sun Quanming Inventor before: Zheng Xiguang Inventor before: Xie Jianbing |
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Application publication date: 20130206 |