CN202738237U - Constant power electrodeless energy-saving lamp ballast - Google Patents
Constant power electrodeless energy-saving lamp ballast Download PDFInfo
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- CN202738237U CN202738237U CN 201220363056 CN201220363056U CN202738237U CN 202738237 U CN202738237 U CN 202738237U CN 201220363056 CN201220363056 CN 201220363056 CN 201220363056 U CN201220363056 U CN 201220363056U CN 202738237 U CN202738237 U CN 202738237U
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Abstract
The utility model relates to a constant power electrodeless energy-saving lamp ballast. The constant power electrodeless energy-saving lamp ballast comprises an inverter circuit and an LAMP bulb, wherein the inverter circuit is connected with a protection circuit, a constant power control circuit is connected between the LAMP bulb and an output end of the inverter circuit, the constant power control circuit comprises a voltage sampling circuit, a one-chip microcomputer processing circuit, a comparison circuit and a PWM generation control circuit, the voltage sampling circuit carries out sampling at an output end of the LAMP bulb through a sampling inductor, a signal acquired by the voltage sampling circuit enters the one-chip microcomputer processing circuit for processing and comparison at an inner portion, a reference current signal is outputted to the comparison circuit, the comparison circuit compares the reference signal with the current signal from the voltage sampling circuit and outputs a current linearity signal as an input signal of the PWM generation control circuit, an adjusting signal is generated through the PWM generation control circuit, and the adjusting signal is taken as a control signal to control work frequency of the inverter circuit. The constant power electrodeless energy-saving lamp ballast is advantaged in that cost is saved; pollution is reduced; and service life of an energy-saving lamp is prolonged.
Description
Technical field
The utility model relates to a kind of ballast, relates to specifically a kind of permanent power electrodeless energy-saving lamp ballast.
Background technology
Mercurous in the foam of well-known electrodeless energy-saving lamp." mercury " is again mercury, is unique a kind ofly exist and runny metal with liquid form at normal temperatures.Mercury has evaporated in the time of 0 ℃, and temperature is higher, and evaporation more the more.10 ℃ of evaporation rates of every increase approximately increase by 1.2～1.5 times, and evaporation is more during Air Flow.According to the form that exists, mercury is divided into liquid mercury and solid mercury.The liquid Hg content is higher, easily contaminated environment.Amalgam and solid-state mercury are referred to as solid mercury, the alloy that is normally formed by other metal, Gu be the solid attitude under the mercury normal temperature, Hg content is lower.
Be the call of response national energy-saving environmental protection, the electrodeless energy-saving lamp foam adopts solid mercury and low mercury technology, and the strict control of Hg content is lower than 1 milligram.
But there is the phenomenon of power shakiness in the course of the work in original electrodeless energy-saving lamp ballast, the phenomenon that namely reduces along with the rising meeting emergent power of bulb temperature in certain temperature range.Such phenomenon can cause a lot of bad negative effects, such as the bulb temperature rising fluorescent material is heated, cause the warm-up movement in light decay increasing and the foam to be accelerated, so that mercury and alkaline-earth metal form amalgam, strengthen light decay, reduce the utilance of mercury, uses the not still a kind of waste but also can cause environmental pollution of too much mercury, can't consolidate the mercury foam with low mercury and be complementary.It is serious that the power shakiness can make the components and parts heating on the electrodeless energy-saving lamp ballast simultaneously, can make the components and parts on the ballast impaired when serious, thereby affect the useful life of electrodeless energy-saving lamp ballast.
Summary of the invention
For addressing the above problem, the utility model provides the permanent power electrodeless energy-saving lamp ballast of long-term stable operation under a kind of condition hanging down the solid mercury of mercury.
The utility model is by the following technical solutions:
Permanent power electrodeless energy-saving lamp ballast comprises inverter circuit and LAMP bulb; Be connected with constant-power control circuit between the output of described LAMP bulb and the output of inverter circuit.
Described constant-power control circuit comprises that voltage sample circuit, single-chip microcomputer treatment circuit, comparison circuit and PWM produce control circuit; Described voltage sample circuit is by the output sampling of sampled inductance at the LMAP bulb, and the signal that voltage sample circuit obtains enters the single-chip microcomputer treatment circuit and carries out inter-process, and the output reference voltage current signal is to comparison circuit; Comparison circuit compares the reference signal that obtains and the live signal that comes from voltage sample circuit, the output current linear signal produces the input signal of control circuit as PWM, will produce the adjustment signal by pwm control circuit, the operating frequency of control inverter circuit, thus realize the purpose that permanent power is controlled.
Described voltage sample circuit comprises sampled inductance L2, sampled inductance L2 is in the output sampling of bulb LAMP, resistance R 6 is in parallel with sampled inductance L2, the branch road one end ground connection that both form, the end of other end connecting resistance R7, the other end of resistance R 7 connect respectively the positive pole of diode D4 and the negative pole of diode D5, the plus earth of diode D5, the negative pole of diode D4 is told two branch roads, and a branch road connects an interface of single-chip microcomputer, ground connection after another is connected in series with capacitor C 6; Described diode D4, diode D5 and capacitor C 6 form current rectifying and wave filtering circuit; Resistance R 6 is converted into voltage signal with the current signal that sampled inductance L2 gathers, and becomes the small voltage signal of interchange through resistance R 6, resistance R 7 dividing potential drops, and this signal is inputted single-chip microcomputer after current rectifying and wave filtering circuit, processes forming the reference current signal through single-chip microcomputer.
Described comparison circuit comprises comparator; The current signal of described single-chip microcomputer output becomes voltage reference signal to send into an input of comparator through resistance R 9 with resistance R 0 serial conversion, wherein the two ends of resistance R 9 are respectively through capacitor C 7 and C6 ground connection, the live signal of sample circuit L2 output is converted to another input that voltage signal is sent into comparator through resistance R 11, produce the input signal of control circuit as PWM through comparator output current linear signal, and through the input of feedback circuit network-feedback to comparator; Produce the adjustment signal of control circuit output through PWM, the operating frequency of control inverter circuit.
Described inverter circuit comprises the field effect transistor of two same model, two field effect transistor are operated on off state, the adjustment signal that is produced the circuit generation by PWM control is conducting and the shutoff of square-wave signal control field effect transistor, the high direct voltage of pfc circuit output is reverse into the single phase alternating current (A.C.) voltage of high frequency, drives bulb LAMP through follow-up LC resonant circuit again; Two field effect transistor one open-one close in the course of the work wherein, alternation switch; The frequency of described two field effect transistor switches is produced the output square-wave signal control of control circuit by PWM.
The beneficial effects of the utility model are: the utility model provides a kind of permanent power electrodeless energy-saving lamp ballast, has not only reduced the amalgam use amount, has saved cost, has reduced pollution, and provides guarantee for electrodeless energy-saving lamp long-life steady operation.
Description of drawings
Fig. 1 is the utility model circuit connecting relation figure;
Fig. 2 is the circuit connecting relation figure of constant-power control circuit part;
Fig. 3 is the circuit diagram of the utility model constant-power control circuit part.
Embodiment
Below in conjunction with drawings and Examples the utility model is done further detailed description.
Among Fig. 1, permanent power electrodeless energy-saving lamp ballast comprises inverter circuit and LAMP bulb; Be connected with constant-power control circuit between the output of described LAMP bulb and the output of inverter circuit.
Fig. 2 is the circuit connecting relation figure of constant-power control circuit part, and constant-power control circuit comprises that voltage sample circuit, single-chip microcomputer treatment circuit, comparison circuit and PWM produce control circuit; Described voltage sample circuit is by the output sampling of sampled inductance at the LMAP bulb, and the signal that voltage sample circuit obtains enters the single-chip microcomputer treatment circuit and carries out inter-process relatively, and the output reference current signal is to comparison circuit; Comparison circuit compares the reference signal that obtains and the current signal that comes from voltage sample circuit, and the output current linear signal will produce the adjustment signal as the input signal that PWM produces control circuit by pwm control circuit; Adjust signal and control the operating frequency of inverter circuit as control signal, thereby realize the purpose that permanent power is controlled.
The physical circuit figure of constant-power control circuit part as shown in Figure 3, wherein, voltage sample circuit comprises sampled inductance L2, sampled inductance L2 is in the output sampling of bulb LAMP, resistance R 6 is in parallel with sampled inductance L2, the branch road one end ground connection that both form, the end of other end connecting resistance R7.The other end of resistance R 7 connects respectively the positive pole of diode D4 and the negative pole of diode D5, the plus earth of diode D5, and the negative pole of diode D4 is told two branch roads, and a branch road connects an interface of single-chip microcomputer, ground connection after another is connected in series with capacitor C 6; Described diode D4, diode D5 and capacitor C 6 form current rectifying and wave filtering circuit; Resistance R 6 is converted into voltage signal with the current signal that sampled inductance L2 gathers, and becomes the small voltage signal of interchange through resistance R 6, resistance R 7 dividing potential drops, and this signal is inputted single-chip microcomputer after current rectifying and wave filtering circuit, processes forming the reference current signal through single-chip microcomputer.
Comparison circuit comprises comparator, and the current signal of single-chip microcomputer output becomes voltage reference signal to send into an input of comparator through resistance R 9 with resistance R 0 serial conversion, and wherein the two ends of resistance R 9 are respectively through capacitor C 7 and C6 ground connection.The live signal of sample circuit L2 output is converted to another input that voltage signal is sent into comparator through resistance R 11, produce the input signal of control circuit as PWM through comparator output current linear signal, and through the input of feedback circuit network-feedback to comparator; Produce the adjustment signal of control circuit output through PWM, the operating frequency of control inverter circuit.
Described inverter circuit comprises the field effect transistor of two same model.Two field effect transistor are operated on off state, the adjustment signal that is produced the circuit generation by PWM control is conducting and the shutoff of square-wave signal control field effect transistor, the high direct voltage of pfc circuit output is reverse into the single phase alternating current (A.C.) voltage of high frequency, drives bulb LAMP through follow-up LC resonant circuit again.Two field effect transistor one open-one close in the course of the work wherein, alternation switch.The frequency of switch is produced the output square wave control of control circuit by PWM.
Resonant inductance L1 among Fig. 3 is by the inductance form of routine, namely be wound with coil on the round magnet ring, change the transformer form into, namely by being wound with coil on two EE magnetic cores, the purpose of doing like this is to increase magnetic core air gap, not only can reduce the discreteness of magnetic core, improve stability and the consistency of inductance, and it be saturated to guarantee that magnetic core is not easy.The size of the inductance value of resonant inductance can have influence on the size of power, so stable inductance will reduce the impact on power.
The permanent power electrodeless energy-saving lamp ballast that the utility model provides has not only reduced the amalgam use amount, has saved cost, has reduced pollution, and provides guarantee for electrodeless energy-saving lamp long-life steady operation.
Claims (4)
1. permanent power electrodeless energy-saving lamp ballast comprises inverter circuit and LAMP bulb; It is characterized in that, be connected with constant-power control circuit between the output of described LAMP bulb and the output of inverter circuit, described constant-power control circuit comprises that voltage sample circuit, single-chip microcomputer treatment circuit, comparison circuit and PWM produce control circuit; Described voltage sample circuit is by the output sampling of sampled inductance at the LMAP bulb, and the signal that voltage sample circuit obtains enters the single-chip microcomputer treatment circuit and carries out inter-process relatively, and the output reference current signal is to comparison circuit; Comparison circuit compares the reference signal that obtains and the current signal that comes from voltage sampling point road, and the output current linear signal will produce the adjustment signal as the input signal that PWM produces control circuit by pwm control circuit; Adjust signal and control the operating frequency of inverter circuit as control signal.
2. permanent power electrodeless energy-saving lamp ballast according to claim 1, it is characterized in that, described voltage sample circuit comprises sampled inductance L2, sampled inductance L2 is in the output sampling of bulb LAMP, resistance R 6 is in parallel with sampled inductance L2, the branch road one end ground connection that both form, the end of other end connecting resistance R7, the other end of resistance R 7 connects respectively the positive pole of diode D4 and the negative pole of diode D5, the plus earth of diode D5, the negative pole of diode D4 is told two branch roads, and a branch road connects an interface of single-chip microcomputer, ground connection after another is connected in series with capacitor C 6; Described diode D4, diode D5 and capacitor C 6 form current rectifying and wave filtering circuit; Resistance R 6 is converted into voltage signal with the current signal that sampled inductance L2 gathers, and becomes the small voltage signal of interchange through resistance R 6, resistance R 7 dividing potential drops, and this signal is inputted single-chip microcomputer after current rectifying and wave filtering circuit, processes forming the reference current signal through single-chip microcomputer.
3. permanent power electrodeless energy-saving lamp ballast according to claim 2 is characterized in that, described comparison circuit comprises comparator; The current signal of described single-chip microcomputer output becomes voltage reference signal to send into an input of comparator through resistance R 9 with resistance R 0 serial conversion, wherein the two ends of resistance R 9 are respectively through capacitor C 7 and C6 ground connection, the live signal of sample circuit L2 output is converted to another input that voltage signal is sent into comparator through resistance R 11, produce the input signal of control circuit as PWM through comparator output current linear signal, and through the input of feedback circuit network-feedback to comparator; Produce the adjustment signal of control circuit output through PWM, the operating frequency of control inverter circuit.
4. permanent power electrodeless energy-saving lamp ballast according to claim 3 is characterized in that, described inverter circuit comprises the field effect transistor of two same model; Two field effect transistor are operated on off state, the adjustment signal that is produced the circuit generation by PWM control is conducting and the shutoff of square-wave signal control field effect transistor, the high direct voltage of pfc circuit output is reverse into the single phase alternating current (A.C.) voltage of high frequency, drives bulb LAMP through follow-up LC resonant circuit again; Two field effect transistor one open-one close in the course of the work wherein, alternation switch; The frequency of described two field effect transistor switches is produced the output square-wave signal control of control circuit by PWM.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220363056 CN202738237U (en) | 2012-07-25 | 2012-07-25 | Constant power electrodeless energy-saving lamp ballast |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220363056 CN202738237U (en) | 2012-07-25 | 2012-07-25 | Constant power electrodeless energy-saving lamp ballast |
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| CN202738237U true CN202738237U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220363056 Expired - Fee Related CN202738237U (en) | 2012-07-25 | 2012-07-25 | Constant power electrodeless energy-saving lamp ballast |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103561527A (en) * | 2013-11-19 | 2014-02-05 | 神龙汽车有限公司 | Dual-function LED drive circuit |
-
2012
- 2012-07-25 CN CN 201220363056 patent/CN202738237U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103561527A (en) * | 2013-11-19 | 2014-02-05 | 神龙汽车有限公司 | Dual-function LED drive circuit |
| CN103561527B (en) * | 2013-11-19 | 2015-09-09 | 神龙汽车有限公司 | A kind of dual-function LED drive circuit |
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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: SHANDONG LIAOCHENG DIANLIANG TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SHANDONG LIAOCHENG JINTAI ELECTRONICS TECHNOLOGY CO., LTD. Effective date: 20130218 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130218 Address after: 252000 East Road, the Yellow River Road, Liaocheng Economic Development Zone, Shandong, China Patentee after: Shandong Liaocheng Dianliang Lighting Technology Co., Ltd. Address before: 252000 No. 6 Zhonghua Road, Liaocheng Economic Development Zone, Shandong, China Patentee before: Shandong Liaocheng Jintai Energy-saving Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20190725 |