CN203446088U - Electronic ballast capable of delay starting in hot lamp state - Google Patents
Electronic ballast capable of delay starting in hot lamp state Download PDFInfo
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- CN203446088U CN203446088U CN201320506861.8U CN201320506861U CN203446088U CN 203446088 U CN203446088 U CN 203446088U CN 201320506861 U CN201320506861 U CN 201320506861U CN 203446088 U CN203446088 U CN 203446088U
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Abstract
The utility model relates to an electronic ballast capable of delay starting in a hot lamp state. The electronic ballast comprises an EMI filter unit used for carrying out filtering interference on inputted alternating current, a rectifier unit which is connected with the EMI filter unit and is used for converting a signal outputted by the EMI filter unit into a pulse direct current signal, a power factor correction unit which is connected with the rectifier unit and is used for carrying out voltage stabilizing on the pulse direct current signal, an inverter which is connected with the power factor correction unit and is used for converting the direct current signal outputted by the power factor correction unit into an alternating current signal, and a load which is a bulb. The electronic ballast also comprises a control part which is connected with the inverter unit. The control part determines the state of the bulb according to the working time of the electronic ballast and triggers the bulb to ignite when the bulb is in a cold state. Through the implementation of the electronic ballast capable of delay starting in a hot lamp state, the life of the bulb can be prolonged, and the safety of the electronic ballast is effectively protected.
Description
Technical field
The utility model relates to ballast field, relates in particular to a kind of electric ballast that can delayed startup under thermolamp state.
Background technology
High-pressure sodium lamp and Metal halogen lamp all belong to high-voltage gas discharging light.This type of lamp need to trigger it up to high-voltage pulse more than 3KV under cold conditions, could effectively start, light bulb.When wick temperature is very high, 3 times of above bright lights of could will putting while needing trigger voltage to be cold conditions are steeped.High pulse voltage like this, the cathodic sputtering of generation is very serious, and its later electrode material being deposited on lamp tube wall can have a strong impact on the life-span of lamp.During actual use, avoid this type of situation to occur.
Traditional Inductive ballast, toggle speed is fast, inevitably above-mentioned situation will occur.At present, the electric ballast on market is also generally the mode starting fast.In actual use, all can there is the situation that bulb is triggered when hot in the ballast of mentioned kind, seriously shorten bulb life.
Utility model content
The technical problems to be solved in the utility model is, for the above-mentioned bulb that triggers when hot of prior art, causes the defect that shortens bulb life, provide a kind of can to prolong the life of lamps can delayed startup under thermolamp state electric ballast.
The utility model solves the technical scheme that its technical problem adopts: construct a kind of electric ballast that can delayed startup under thermolamp state, comprise for the EMI filter unit to the alternating current filtering interfering of input, be connected and convert to for the signal that described EMI filter unit is exported the rectification unit of pulsating direct current signal with described EMI filter unit, be connected with described rectification unit and for the power factor correction unit to the voltage stabilizing of described pulsating direct current signal, be connected and convert to for the direct current signal that described power factor correction unit is exported inversion unit and the load of AC signal with described power factor correction unit, described load is bulb, described electric ballast also comprises the control section being connected with described inversion unit, described control section is determined the state of described bulb according to the operating time of described electric ballast, and at it, trigger described bulb igniting during in cold conditions.
In electric ballast that can delayed startup under thermolamp state described in the utility model, described control section comprises MCU control unit and RC series circuit; Described RC series circuit comprises the first resistance and the first electrochemical capacitor; One end of described the first resistance is connected with one end of described MCU control unit, and the other end is connected with one end of described the first electrochemical capacitor, the other end grounding connection of the other end of described the first electrochemical capacitor and described MCU control unit.
In electric ballast that can delayed startup under thermolamp state described in the utility model, described MCU control unit comprises single-chip microcomputer, one end of described the first resistance is connected with the 6th pin of described single-chip microcomputer, the other end is connected with one end of described the first electrochemical capacitor, the tenth pin grounding connection of the other end of described the first electrochemical capacitor and described single-chip microcomputer.
In electric ballast that can delayed startup under thermolamp state described in the utility model, described single-chip microcomputer is controlled the state of described bulb by detecting the voltage of described the 6th pin, and described bulb is lighted a fire when being less than set point at the voltage that described the 6th pin detected.
In electric ballast that can delayed startup under thermolamp state described in the utility model, the loop at described bulb place comprises the second bleeder circuit, the first pin of described single-chip microcomputer is connected with described the second bleeder circuit with the second pin, for receiving output short-circuit signal or output open circuit signal and close output under abnormality.
In electric ballast that can delayed startup under thermolamp state described in the utility model, described inversion unit also comprises the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor and for driving described the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the driving chip of the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor, the grid of described the first metal-oxide-semiconductor, the grid of the second metal-oxide-semiconductor, the grid of the grid of the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor is connected with described driving chip, the drain electrode of described the first metal-oxide-semiconductor is connected with the drain electrode of described the 3rd metal-oxide-semiconductor, the source electrode of described the first metal-oxide-semiconductor is connected with the drain electrode of described the second metal-oxide-semiconductor, the source electrode of described the second metal-oxide-semiconductor is connected with the source electrode of described the 4th metal-oxide-semiconductor, the source electrode of described the 3rd metal-oxide-semiconductor is connected with the drain electrode of the 4th metal-oxide-semiconductor.
In electric ballast that can delayed startup under thermolamp state described in the utility model, the 16 pin of described single-chip microcomputer is connected with described driving chip with the 17 pin, for to described driving chip transmission driving signal to drive described driving chip.
In electric ballast that can delayed startup under thermolamp state described in the utility model, described EMI filter unit comprises the first bleeder circuit, the 20 pin of described single-chip microcomputer is connected with described the first bleeder circuit, for receiving input overvoltage signal or input undervoltage signal and close output under abnormality.
In electric ballast that can delayed startup under thermolamp state described in the utility model, described MCU control unit also comprises the temperature sensor for detection of complete machine temperature, the 19 pin of described single-chip microcomputer is connected with described temperature sensor, for receiving complete machine temperature signal and close output under abnormality.
In electric ballast that can delayed startup under thermolamp state described in the utility model, described MCU control unit to described RC series circuit charging, makes described RC series circuit electric discharge when described electric ballast normal operation when power down.
Implement electric ballast that can delayed startup under thermolamp state of the present utility model; there is following beneficial effect: owing to using control section; control section determines that according to the operating time of electric ballast bulb is in hot or cold conditions; and at bulb, trigger bulb igniting during in cold conditions; so just avoided bulb to be triggered under hot; so its energy to prolong the life of lamps; in addition; owing to the bulb under hot not being triggered, so it can effectively protect the safety of ballast itself.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only embodiment more of the present utility model, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the circuit diagram in embodiment of electric ballast that the utility model can delayed startup under thermolamp state;
Fig. 2 is the physical circuit figure of control section in described embodiment.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
In the electric ballast embodiment of the utility model energy delayed startup under thermolamp state, be somebody's turn to do the circuit diagram of the electric ballast of energy delayed startup under thermolamp state as shown in Figure 1, in Fig. 1, this electric ballast comprises EMI filter unit 1, rectification unit BD1, power factor correction unit 2, inversion unit 3 and load, wherein, EMI filter unit 1 is for the alternating current filtering interfering to input, civil power enters after power supply, first through being the EMI filter unit 1 of prime, the Main Function of EMI filter unit 1 is the interference to power supply of the high-frequency impulse of the extraneous electrical network of filtering, reduce in addition Switching Power Supply electromagnetic interference to external world itself simultaneously.In fact it is the characteristic of sharp inductance and electric capacity, and making frequency is that the alternating current of about 50Hz can pass through filter smoothly, and higher than High-frequency Interference clutter more than 50Hz by filtered device filtering.In rectification unit BD1(the present embodiment, be bridge rectifier) be connected with EMI filter unit 1 and convert pulsating direct current signal to for the signal that EMI filter unit 1 is exported, power factor correction unit 2 is connected with rectification unit BD1 and for to the voltage stabilizing of pulsating direct current signal, inversion unit 3 is connected with power factor correction unit 2, for converting the direct current signal of power factor correction unit 2 outputs to AC signal, above-mentioned load is bulb LAMP, electric ballast also comprises control section 5, control section 4 is connected with inversion unit 3, control section 4 is determined the state of bulb LAMP according to the operating time of electric ballast, and at bulb LAMP, trigger bulb LAMP igniting during in cold conditions.
Specifically, be input as industrial-frequency alternating current, through EMI filter unit 1 and the rectification unit BD1 being formed from the first capacitor C 1, the second capacitor C 2 and inductance L 1, the AC signal of input become to pulsating direct current signal successively.Then ingoing power factor correcting unit 2 is converted to galvanic current pressure by DC pulse moving voltage, promotes the power factor of circuit simultaneously, reduces current harmonics value, weakens the interference to power supply grid.Power factor correction unit 2 is by the 3rd capacitor C 3, the first diode D1, the 5th metal-oxide-semiconductor Q5, the second electrochemical capacitor EC2 and PFC(power factor correction) control unit formation.Finally by the inversion unit 3 consisting of the first metal-oxide-semiconductor Q1, the second metal-oxide-semiconductor Q2, the 3rd metal-oxide-semiconductor Q3 and the 4th metal-oxide-semiconductor Q4, carry out DC-AC conversion, output is greater than the high-frequency alternating current of 30KHz and lights bulb LAMP and carry out permanent power control and protection control.
In the present embodiment, control section 4 comprises MCU control unit and RC series circuit; RC series circuit comprises the first resistance R 1 and the first electrochemical capacitor EC1; One end of the first resistance R 1 is connected with one end of MCU control unit, and the other end is connected with one end of the first electrochemical capacitor EC1, the other end grounding connection of the other end of the first electrochemical capacitor EC1 and MCU control unit.
Fig. 2 is the physical circuit figure of control section in the present embodiment.In Fig. 2, MCU control unit comprises single-chip microcomputer IC1, one end of the first resistance R 1 is connected with the 6th pin of single-chip microcomputer IC1, and the other end is connected with one end of the first electrochemical capacitor R1, the tenth pin grounding connection of the other end of the first electrochemical capacitor EC1 and single-chip microcomputer IC1.Single-chip microcomputer IC1 controls the state of bulb LAMP by detecting the voltage of its 6th pin, and bulb LAMP is lighted a fire when being less than set point at the voltage that the 6th pin detected.It is worth mentioning that, in the present embodiment, set point is smaller, and its size approaches 0.
As depicted in figs. 1 and 2, inversion unit 3 also comprises the first metal-oxide-semiconductor Q1, the second metal-oxide-semiconductor Q2, the 3rd metal-oxide-semiconductor Q3 and the 4th metal-oxide-semiconductor Q4 and drives chip; Wherein, drive chip to be used for driving the first metal-oxide-semiconductor Q1, the second metal-oxide-semiconductor Q2, the 3rd metal-oxide-semiconductor Q3 and the 4th metal-oxide-semiconductor Q4, the grid of the grid of the grid of the grid of the first metal-oxide-semiconductor Q1, the second metal-oxide-semiconductor Q2, the 3rd metal-oxide-semiconductor Q3 and the 4th metal-oxide-semiconductor Q4 is connected with driving chip, the drain electrode of the first metal-oxide-semiconductor Q1 is connected with the drain electrode of the 3rd metal-oxide-semiconductor Q3, the source electrode of the first metal-oxide-semiconductor Q1 is connected with the drain electrode of the second metal-oxide-semiconductor Q2, the source electrode of the second metal-oxide-semiconductor Q2 is connected with the source electrode of the 4th metal-oxide-semiconductor Q4, and the source electrode of the 3rd metal-oxide-semiconductor Q3 is connected with the drain electrode of the 4th metal-oxide-semiconductor Q4.The 16 pin of single-chip microcomputer IC1 and the 17 pin with drive chip is connected, for driving signal with driving chip to driving chip to send.
In the present embodiment, MCU control unit to the charging of RC series circuit, makes the electric discharge of RC series circuit when electric ballast works when power down.Specifically, the time constant Γ of RC series circuit=R1* EC1 (second).When electric ballast enters normal operation, the 6th pin of single-chip microcomputer IC1 can be given the charging of RC circuit, and generally, through the time of 3 ~ 5 Γ, the electric charge on the first electrochemical capacitor EC1 can be full of, and now, bulb LAMP has also reached hot through work after a while.The voltage of the 6th pin is approximately equal to the supply voltage of single-chip microcomputer IC1.In reality, use and often can produce instant power-down situation; when power down; bulb LAMP can extinguish; again switch on can to again after moment electric ballast; now; single-chip microcomputer IC1 can detect the voltage of the 6th pin; because the first electrochemical capacitor EC1 discharges by the first resistance R 1; discharge off after the time of 3 ~ 5 Γ; the voltage of the 6th pin is approximately 0, and now bulb LAMP has also got back to cold conditions, at this moment can light bulb LAMP; if the voltage of the 6th pin is not 0, do not light bulb LAMP.Like this, by utilizing mode that RC discharges and recharges to identify the cold conditions of Pressurized gas discharge bulb and hot, and its hot lower can delayed startup, extended the life-span of bulb.It is worth mentioning that, by surveying different types of bulb, from hot, become the needed time of cold conditions, the first resistance R 1 in can corresponding adjusting RC series circuit and the value of the first electrochemical capacitor EC1, to reach needed delay time.
In the present embodiment, in order further electric ballast to be carried out to safeguard protection, increased protective circuit.Specifically, the loop at bulb LAMP place comprises the second bleeder circuit, and the first pin of single-chip microcomputer IC1 is connected with the second bleeder circuit with the second pin, for receiving output short-circuit signal or output open circuit signal and close output under abnormality.EMI filter unit 1 comprises the first bleeder circuit, and the 20 pin of single-chip microcomputer IC1 is connected with the first bleeder circuit, for receiving input overvoltage signal or input undervoltage signal and close output under abnormality.MCU control unit also comprises the temperature sensor for detection of complete machine temperature, and the 19 pin of single-chip microcomputer IC1 is connected with temperature sensor, for receiving complete machine temperature signal and close output under abnormality.That is to say that single-chip microcomputer IC1 detects output signal, input signal, complete machine temperature and exists when abnormal, close output, thereby further strengthened the security performance of electric ballast.
In a word, in the present embodiment, owing to having increased control section, can control flexibly the operating state of bulb LAMP.Increased simultaneously the protection of electric ballast has been controlled, by external circuit, picked up output open circuit signal, output short-circuit signal, inputted the under-voltage signal of and complete machine temperature signal, and close output under abnormality, protected electric ballast.Single-chip microcomputer IC1 judges that by calculating the operating time of electric ballast bulb LAMP is in cold conditions or is in hot; thereby make in the short time, to re-power after power-off and ignition trigger immediately not; after bulb LAMP is cooling, just trigger igniting; effectively avoided the hot lower high pressure to bulb LAMP to trigger; the object that reaches protection bulb LAMP, extends its life-span.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection range of the present utility model.
Claims (10)
- One kind can delayed startup under thermolamp state electric ballast, it is characterized in that, comprise for the EMI filter unit to the alternating current filtering interfering of input, be connected and convert to for the signal that described EMI filter unit is exported the rectification unit of pulsating direct current signal with described EMI filter unit, be connected with described rectification unit and for the power factor correction unit to the voltage stabilizing of described pulsating direct current signal, be connected and convert to for the direct current signal that described power factor correction unit is exported inversion unit and the load of AC signal with described power factor correction unit, described load is bulb, described electric ballast also comprises the control section being connected with described inversion unit, described control section is determined the state of described bulb according to the operating time of described electric ballast, and at it, trigger described bulb igniting during in cold conditions.
- 2. electric ballast that can delayed startup under thermolamp state according to claim 1, is characterized in that, described control section comprises MCU control unit and RC series circuit; Described RC series circuit comprises the first resistance and the first electrochemical capacitor; One end of described the first resistance is connected with one end of described MCU control unit, and the other end is connected with one end of described the first electrochemical capacitor, the other end grounding connection of the other end of described the first electrochemical capacitor and described MCU control unit.
- 3. electric ballast that can delayed startup under thermolamp state according to claim 2, it is characterized in that, described MCU control unit comprises single-chip microcomputer, one end of described the first resistance is connected with the 6th pin of described single-chip microcomputer, the other end is connected with one end of described the first electrochemical capacitor, the tenth pin grounding connection of the other end of described the first electrochemical capacitor and described single-chip microcomputer.
- 4. electric ballast that can delayed startup under thermolamp state according to claim 3, it is characterized in that, described single-chip microcomputer is controlled the state of described bulb by detecting the voltage of described the 6th pin, and described bulb is lighted a fire when being less than set point at the voltage that described the 6th pin detected.
- According to described in claim 3 or 4 can delayed startup under thermolamp state electric ballast, it is characterized in that, the loop at described bulb place comprises the second bleeder circuit, the first pin of described single-chip microcomputer is connected with described the second bleeder circuit with the second pin, for receiving output short-circuit signal or output open circuit signal and close output under abnormality.
- 6. electric ballast that can delayed startup under thermolamp state according to claim 5, it is characterized in that, described inversion unit also comprises the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor and for driving described the first metal-oxide-semiconductor, the second metal-oxide-semiconductor, the driving chip of the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor, the grid of described the first metal-oxide-semiconductor, the grid of the second metal-oxide-semiconductor, the grid of the grid of the 3rd metal-oxide-semiconductor and the 4th metal-oxide-semiconductor is connected with described driving chip, the drain electrode of described the first metal-oxide-semiconductor is connected with the drain electrode of described the 3rd metal-oxide-semiconductor, the source electrode of described the first metal-oxide-semiconductor is connected with the drain electrode of described the second metal-oxide-semiconductor, the source electrode of described the second metal-oxide-semiconductor is connected with the source electrode of described the 4th metal-oxide-semiconductor, the source electrode of described the 3rd metal-oxide-semiconductor is connected with the drain electrode of the 4th metal-oxide-semiconductor.
- 7. electric ballast that can delayed startup under thermolamp state according to claim 6, it is characterized in that, the 16 pin of described single-chip microcomputer is connected with described driving chip with the 17 pin, for sending and drive signal to drive described driving chip to described driving chip.
- 8. electric ballast that can delayed startup under thermolamp state according to claim 7, it is characterized in that, described EMI filter unit comprises the first bleeder circuit, the 20 pin of described single-chip microcomputer is connected with described the first bleeder circuit, for receiving input overvoltage signal or input undervoltage signal and close output under abnormality.
- 9. electric ballast that can delayed startup under thermolamp state according to claim 8, it is characterized in that, described MCU control unit also comprises the temperature sensor for detection of complete machine temperature, the 19 pin of described single-chip microcomputer is connected with described temperature sensor, for receiving complete machine temperature signal and close output under abnormality.
- 10. electric ballast that can delayed startup under thermolamp state according to claim 2, it is characterized in that, described MCU control unit to described RC series circuit charging, makes described RC series circuit electric discharge when described electric ballast normal operation when power down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320506861.8U CN203446088U (en) | 2013-08-19 | 2013-08-19 | Electronic ballast capable of delay starting in hot lamp state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320506861.8U CN203446088U (en) | 2013-08-19 | 2013-08-19 | Electronic ballast capable of delay starting in hot lamp state |
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| Publication Number | Publication Date |
|---|---|
| CN203446088U true CN203446088U (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320506861.8U Expired - Lifetime CN203446088U (en) | 2013-08-19 | 2013-08-19 | Electronic ballast capable of delay starting in hot lamp state |
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| CN (1) | CN203446088U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105281559A (en) * | 2015-11-27 | 2016-01-27 | 黄敏超 | Electromagnetic interference suppression structure and electrical energy converter provided with same |
| CN107318209A (en) * | 2017-07-12 | 2017-11-03 | 东南大学 | A kind of high-low pressure firing circuit for metal halogen lamp electric ballast |
-
2013
- 2013-08-19 CN CN201320506861.8U patent/CN203446088U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105281559A (en) * | 2015-11-27 | 2016-01-27 | 黄敏超 | Electromagnetic interference suppression structure and electrical energy converter provided with same |
| CN107318209A (en) * | 2017-07-12 | 2017-11-03 | 东南大学 | A kind of high-low pressure firing circuit for metal halogen lamp electric ballast |
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Granted publication date: 20140219 |