CN1901771B - Low frequency trigger electronic ballast - Google Patents
Low frequency trigger electronic ballast Download PDFInfo
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- CN1901771B CN1901771B CN2005100860193A CN200510086019A CN1901771B CN 1901771 B CN1901771 B CN 1901771B CN 2005100860193 A CN2005100860193 A CN 2005100860193A CN 200510086019 A CN200510086019 A CN 200510086019A CN 1901771 B CN1901771 B CN 1901771B
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- low frequency
- triggers
- voltage
- lamp
- frequency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
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Abstract
This invention relates to electronic ballasts triggered by low frequency capable of using the CD voltage generated by the voltage-doubling rectified low frequency pulse square-waves to charge energy storaged batteries to simply circuit design and reduce power loss and increase working efficiency, besides, this invention also can continuously test current and voltage of high strengthend gas discharge lamps to regulate variable signals of low frequency pulse width so as to guarantee the continuous work of the electronic ballasts.
Description
Technical field
The invention relates to a kind of electric ballast, refer to a kind of electric ballast that is applicable to that low frequency triggers especially.
Background technology
Generally speaking, under normal conditions, the two end electrodes of high-intensity gas discharge lamp (HID) is nonconducting, and the prerequisite that HID will be lighted is to need a high voltage startup pulse, it need reach stable the puncture also needs 20 1 25 kilovolts pulse voltage, and ballast is except providing firing pulse, still must provide the output voltage of 200-300 volt so that form stable electric arc, in the temperature-rise period after producing electric arc, lamp courage inner high voltage xenon and by metal halide, the high pressure mixed gas that vaporized mercury forms just can send the using light that is similar to sunlight spectrum (5800K).In a single day electric arc form, and ballast just must limit size of current, otherwise electric arc can cause very big electric current, all unfavorable to fluorescent tube or other part.
Moreover, as shown in Figure 1, because power supply on vehicle 191 is 12 volt DC voltages, so ballast then must be promoted to necessary high voltages with 12 volts direct voltage, and the high voltage of known ballast to promote circuit generally all be to utilize pulse-width modulation and control commutator transformer 190 and produce the 80 1 200 required volt DC high pressure of lighting a lamp, and in transformer 190 high frequency voltage doubling rectifing circuits 192 in parallel, can utilize the high-frequency pulse square wave on 190 levels of transformer to pass through by C1, D1, D2, the voltage doubling rectifing circuit 192 that C2 formed is carried out voltage multiplying rectifier, and then produce a high direct voltage to storage capacitor 194 chargings, in the moment of firm opening power, because transformer 190 almost is to be in Light Condition, current loading is very little, so the output voltage of voltage multiplying rectifier charges to storage capacitor 194, what the storage capacitor both end voltage was very fast is raised to more than 600 volts.Because be parallel with one to puncture voltage be 600 volts gas discharge tube 193 at the two ends of storage capacitor 194, when so in case voltage has reached the puncture voltage of gas discharge tube 193, the electric energy that is stored in the storage capacitor 194 then produces the heavy current pulse of a rapid saltus step by the primary coil N1 of high-tension transformer 195, according to being mutually principle, just can produce the high-voltage pulse of an about 26K volt at the secondary end N2 of the high-tension transformer 195 of the very big turn ratio, with conducting high-intensity gas discharge lamp 196, but this known technology is the middle pressure high-frequency impulse of using on the transformer secondary output produces high-voltage pulse, so the high frequency response of whole voltage doubling rectifing circuit is fine, therefore the circuit element of whole ballast all needs the element that uses high frequency performance good, except triggering, may cause the circuit consume greatly high-frequency and high-voltage, more cause the rising of manufacturing cost, cause the puzzlement in the use because of element needs high frequency performance.
Summary of the invention
The electric ballast that the object of the present invention is to provide a kind of low frequency to trigger.
By enforcement of the present invention, except that simplifying the line design, also can reduce electric energy loss and increase work efficiency and then reduce manufacturing cost, and can increase the stability of its circuit because of the low frequency rectification, but to guarantee the electric ballast safe action.
For achieving the above object, the electric ballast that low frequency provided by the invention triggers, be electrically connected at a high-intensity gas discharge lamp, with a supply unit; Wherein, this electric ballast comprises:
One power supply provisioning controller (power supply controller) is electrically connected to this supply unit, to control its supply electric power to this electric ballast;
One first booster circuit is electrically connected to this supply unit, and comprises that one first transformer and a low level trigger element;
One microprocessor, this low level that is electrically connected to this power supply provisioning controller and this first booster circuit respectively triggers element, and when this electric power is supplied in this power supply provisioning controller control to this microprocessor, this microprocessor is exported a low-frequency pulse width modulation signal (PWM) to this low level and is triggered element, and trigger its conducting, impel this first transformer of this first booster circuit to begin to carry out boost conversion, and then export in the low frequency direct current and press;
The one drive axle road that lights a lamp, be electrically connected to this first booster circuit and this microprocessor respectively, this is lit a lamp to drive in this low frequency direct current that bridge circuit receives this first booster circuit output and presses, and carries out deciding frequency and handle in the low frequency that (fixed frequency processing) back output one has (with) characteristic frequency (specificfrequency) and press pulse square wave; And
One voltage lifting circuit, comprise a low frequency voltage doubling rectifing circuit, one storage capacitor, one gas discharge tube, and one second transformer, wherein, this low frequency voltage doubling rectifing circuit is electrically connected to this driving bridge circuit of lighting a lamp, this second transformer is electrically connected to this high-intensity gas discharge lamp, this low frequency voltage doubling rectifing circuit receives in this this low frequency that drives bridge circuit output of lighting a lamp and presses pulse square wave, and it is rectified into a direct current high pressure, and then be sent to this storage capacitor and charge, and when this storage capacitor charges to a critical voltage, then this gas discharge tube disruptive discharge is carried out boost conversion to drive this second transformer, and then this high-intensity gas discharge lamp of conducting.
The electric ballast that described low frequency triggers, wherein this supply unit comprises an Electromagnetic interference filter, is electrically connected to this supply unit, and the electric power that it provided is carried out Filtering Processing to prevent electromagnetic interference.
The electric ballast that described low frequency triggers, it is electrically connected on this microprocessor and this and lights a lamp and drive between the bridge circuit wherein also to comprise a low frequency driving governor, and controls this and light a lamp and drive bridge circuit and carry out deciding frequency and handle in the low frequency that back output one has characteristic frequency and press pulse square wave.
The electric ballast that described low frequency triggers, wherein this microprocessor also captures following group one at least: the magnitude of voltage of this supply unit, this low level trigger current value, the magnitude of voltage of this high-intensity gas discharge lamp and the current value of this high-intensity gas discharge lamp of element, and this microprocessor is also worked as this current value or the low-frequency pulse width of big this low-frequency pulse width modulation signal of then corresponding shortening of magnitude of voltage change.
The electric ballast that described low frequency triggers, wherein this characteristic frequency that drives bridge circuit of lighting a lamp is 400Hz.
The electric ballast that described low frequency triggers, wherein this critical voltage is 600 volts.
The electric ballast that described low frequency triggers, wherein this low level triggering element comprises a nmos switch device.
The electric ballast that described low frequency triggers, wherein this power supply provisioning controller comprises a thumb-acting switch.
The electric ballast that described low frequency triggers, wherein this microprocessor is one 8 bit processors.
The electric ballast that described low frequency triggers, wherein this high-intensity gas discharge lamp is mounted in the auto bulb.
Description of drawings
Fig. 1 is the functional block diagram of known ballast.
Fig. 2 is the functional block diagram of a preferred embodiment of the present invention.
Fig. 3 makes the environment schematic diagram for a preferred embodiment of the present invention De Shu.
Fig. 4 is that the low-frequency pulse width modulation signal of a preferred embodiment of the present invention changes schematic diagram.
Embodiment
A relevant preferred embodiment of the present invention, please be earlier with reference to circuit diagram shown in Figure 2, and in the lump with reference to operating environment schematic diagram shown in Figure 3, in present embodiment, it is electrically connected at high-intensity gas discharge lamp 102 (HID lamp) on the vehicle 1 electric ballast that low frequency of the present invention triggers 10, with a supply unit 101, in present embodiment, electric ballast 10 is mounted in the auto bulb, and it comprises: a power supply provisioning controller 12 (power supply controller), one first booster circuit 13, one microprocessor 14, the one drive axle road 15 that lights a lamp, an and voltage lifting circuit 16.Power supply provisioning controller 12 is preferably a thumb-acting switch in present embodiment, it also can select the device as tool identical functions such as buttons for use, this power supply provisioning controller 12 can be electrically connected to supply unit 101, to be used for controlling its supply electric power to electric ballast, in present embodiment, supply unit 101 is one 12 voltaism source apparatus, it comprises an Electromagnetic interference filter 11 (EMI filter), it can be electrically connected to supply unit 101, and the electric power (electricty) that it provided is carried out Filtering Processing to prevent electromagnetic interference.Above-mentioned first booster circuit 13, also be electrically connected to supply unit 101, and this first booster circuit 13 also comprises one first transformer 131, and one low level trigger element 132, in present embodiment, it is a nmos switch device that low level triggers element 132, because of triggering element 132, low level only needs to drive than electronegative potential, therefore can adopt basic model nmos switch device to get final product, do not need additionally to purchase special MOSFET, in addition, microprocessor 14 is one 8 bits (8bits) processors, it can be electrically connected to power supply provisioning controller 12 respectively, and this low level of first booster circuit 13 triggers element 132, and when these electric power are supplied in 12 controls of power supply provisioning controller to microprocessor 14,14 output of microprocessor, one low-frequency pulse width modulation signal (PWM) to low level triggers element 132, and trigger its conducting, impel these first transformer, 131 acquisition power supply on vehicle of this first booster circuit 13 to begin to carry out boost conversion for 12 volts, and then export that being depressed in the about 80-100 volt low frequency direct current lights a lamp drives bridge circuit 15, in present embodiment, microprocessor 14 also captures following group one at least: the magnitude of voltage of supply unit 101, low level triggers the current value of element 132, the magnitude of voltage of high-intensity gas discharge lamp 102, and the current value of high-intensity gas discharge lamp 102, as shown in Figure 4, microprocessor 14 is also worked as current value or the low-frequency pulse width PWM (duty ratio) of big this low-frequency pulse width modulation signal of then corresponding shortening of magnitude of voltage change, to reach voltage and the electric current that can accurately control high-intensity gas discharge lamp 102 two ends.
In present embodiment, light a lamp and drive bridge circuit 15 it can be electrically connected to first booster circuit 13 respectively, and microprocessor 14, drive when lighting a lamp when pressing in the low frequency direct current that bridge circuit 15 receives 13 outputs of first booster circuit, and carry out deciding exporting in the low frequency that an operating frequency is 400Hz after frequency is handled and press pulse square wave, in addition, in present embodiment, electric ballast 10 also comprises a low frequency driving governor 17, and it is electrically connected on microprocessor 14 and lights a lamp and drives between the bridge circuit 15, driving bridge circuit 15 because of lighting a lamp is by 4 nmos switch device S1, S2, S3, S4 forms, can be by the state of this low frequency driving governor 17 control nmos switch devices, carry out deciding frequency and handle in the low frequency of back output 400Hz and press pulse square wave with the control drive axle road 15 that lights a lamp.
Above-mentioned voltage lifting circuit 16 comprises a low frequency multiplication of voltage current circuit 161, one storage capacitor 162, one gas discharge tube 163, and one second transformer 164, wherein, low frequency voltage doubling rectifing circuit 161 is electrically connected to light a lamp and drives bridge circuit 15, second transformer 164 is electrically connected to high-intensity gas discharge lamp 102, low frequency voltage doubling rectifing circuit 161 receives in the low frequency of exporting on the drive axle road 15 that lights a lamp and presses pulse square wave, and it is rectified into a direct current high pressure, and then be sent to storage capacitor 162 and charge, and when this storage capacitor 162 charges to a critical voltage, then gas discharge tube 163 disruptive discharges, and the electric energy that is stored in storage capacitor 162 can make the primary coil of second transformer 164 produce the heavy current pulse of a rapid saltus step, according to the mutual inductance principle, just can produce the high-voltage pulse of an about 26K volt at second transformer, 164 out-secondaries of the very big turn ratio, because the secondary coil of second transformer 164 is by high-intensity gas discharge lamp 102 and lights a lamp between the driving bridge circuit 15, so when out-secondary produces 26K volt high-voltage pulse, the gas that high-intensity gas discharge lamp is 102 li will be produced electric arc by discharge breakdown, and this electric arc can continue to keep discharge because press pulse square wave in the 400Hz low frequency that obtains being exported by a lamp drive circuit 15, thereby form stable electrical discharge arc, and because microprocessor 14 can constantly detect the current value and the magnitude of voltage of high-intensity gas discharge lamp 102, so can change according to the detecting result at any time; Low-frequency pulse width modulation signal is kept the steady operation electric current with control high-intensity gas discharge lamp 102.
As mentioned above, the direct voltage that the present invention can utilize the low-frequency pulse square wave to be produced behind voltage multiplying rectifier charges to storage capacitor, to reach the simplification line design, more can reduce electric energy loss and increase work efficiency and then reduce manufacturing cost because of the low frequency rectification, in addition, also can light a lamp the driving bridge circuit by low frequency driving governor may command can be to press pulse in the fixed frequency output low frequency, make high-intensity gas discharge lamp 102 can produce stable electrical discharge arc, moreover, when microprocessor then can increase according to high-intensity gas discharge lamp 102 voltages that monitor or electric current, then trigger the damage of element or its related elements for fear of low level, then can change its low-frequency pulse width, but to guarantee the ballast safe action.
The foregoing description is only given an example for convenience of description, and the interest field that the present invention advocated should be as the criterion so that claim is described certainly, but not only limits to the foregoing description.
Claims (10)
1. the electric ballast that triggers of a low frequency, be electrically connected at a high-intensity gas discharge lamp, with a supply unit; Wherein, this electric ballast comprises:
One power supply provisioning controller is electrically connected to this supply unit, to control its supply electric power to this electric ballast;
One first booster circuit is electrically connected to this supply unit, and comprises that one first transformer and a low level trigger element;
One microprocessor, this low level that is electrically connected to this power supply provisioning controller and this first booster circuit triggers element, and when this electric power is supplied in this power supply provisioning controller control to this microprocessor, this microprocessor is exported a low-frequency pulse width modulation signal to this low level and is triggered element, and trigger its conducting, impel this first transformer of this first booster circuit to begin to carry out boost conversion, and then export in the low frequency direct current and press;
The one drive axle road that lights a lamp is electrically connected to this first booster circuit and this microprocessor, and this is lit a lamp to drive in this low frequency direct current that bridge circuit receives this first booster circuit output and presses, and carries out deciding frequency and handle in back output one low frequency and press pulse square wave; And
One voltage lifting circuit, comprise a low frequency voltage doubling rectifing circuit, one storage capacitor, one gas discharge tube, and one second transformer, wherein, this low frequency voltage doubling rectifing circuit is electrically connected to this driving bridge circuit of lighting a lamp, this second transformer is electrically connected to this high-intensity gas discharge lamp, this low frequency voltage doubling rectifing circuit receives in this this low frequency that drives bridge circuit output of lighting a lamp and presses pulse square wave, and it is rectified into a direct current high pressure, and then be sent to this storage capacitor and charge, and when this storage capacitor charges to a critical voltage, then this gas discharge tube disruptive discharge is carried out boost conversion to drive this second transformer, and then this high-intensity gas discharge lamp of conducting.
2. the electric ballast that low frequency as claimed in claim 1 triggers, wherein this supply unit comprises an Electromagnetic interference filter, is electrically connected to this supply unit, and the electric power that it provided is carried out Filtering Processing to prevent electromagnetic interference.
3. the electric ballast that low frequency as claimed in claim 1 triggers, it is electrically connected on this microprocessor and this and lights a lamp and drive between the bridge circuit wherein also to comprise a low frequency driving governor, and controls this and light a lamp and drive bridge circuit and carry out deciding frequency and handle in back output one low frequency and press pulse square wave.
4. the electric ballast that low frequency as claimed in claim 1 triggers, wherein this microprocessor also captures following group one at least: the magnitude of voltage of this supply unit, this low level trigger current value, the magnitude of voltage of this high-intensity gas discharge lamp and the current value of this high-intensity gas discharge lamp of element, and this microprocessor is also worked as this current value or the low-frequency pulse width of big this low-frequency pulse width modulation signal of then corresponding shortening of magnitude of voltage change.
5. the electric ballast that low frequency as claimed in claim 1 triggers, wherein pressing the operating frequency of pulse square wave in this low frequency that drives bridge circuit output of lighting a lamp is 400Hz.
6. the electric ballast that low frequency as claimed in claim 1 triggers, wherein this critical voltage is 600 volts.
7. the electric ballast that low frequency as claimed in claim 1 triggers, wherein this low level triggering element comprises a nmos switch device.
8. the electric ballast that low frequency as claimed in claim 1 triggers, wherein this power supply provisioning controller comprises a thumb-acting switch.
9. the electric ballast that low frequency as claimed in claim 1 triggers, wherein this microprocessor is one 8 bit processors.
10. the electric ballast that low frequency as claimed in claim 1 triggers, wherein this high-intensity gas discharge lamp is mounted in the auto bulb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100860193A CN1901771B (en) | 2005-07-19 | 2005-07-19 | Low frequency trigger electronic ballast |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2005100860193A CN1901771B (en) | 2005-07-19 | 2005-07-19 | Low frequency trigger electronic ballast |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1901771A CN1901771A (en) | 2007-01-24 |
| CN1901771B true CN1901771B (en) | 2010-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005100860193A Expired - Fee Related CN1901771B (en) | 2005-07-19 | 2005-07-19 | Low frequency trigger electronic ballast |
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| CN (1) | CN1901771B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101237739B (en) * | 2007-05-18 | 2011-04-20 | 张福明 | HID rectifier and its control method |
| CN101175360B (en) * | 2007-11-22 | 2011-04-13 | 杭州电子科技大学 | High-voltage triggering circuit for ballast of vehicle xenon front lamp |
| CN101309540B (en) * | 2008-07-10 | 2011-10-05 | 北方工业大学 | Electronic trigger and HID light |
| US8203287B2 (en) * | 2009-02-24 | 2012-06-19 | Richard Landry Gray | Pulse width modulation control device |
| CN102213576A (en) * | 2011-05-30 | 2011-10-12 | 李继文 | Exploder |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2146099Y (en) * | 1992-10-16 | 1993-11-10 | 段应祥 | Low frequency electronic ballast |
| US5838181A (en) * | 1995-02-09 | 1998-11-17 | Magnetek, Inc. | Pulse-width modulator circuit for use in low-cost power factor correction circuit |
| US6222322B1 (en) * | 1997-09-08 | 2001-04-24 | Q Technology Incorporated | Ballast with lamp abnormal sensor and method therefor |
| CN2689647Y (en) * | 2004-01-29 | 2005-03-30 | 林聪� | Ballast of low-frequency energy-saving light |
-
2005
- 2005-07-19 CN CN2005100860193A patent/CN1901771B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2146099Y (en) * | 1992-10-16 | 1993-11-10 | 段应祥 | Low frequency electronic ballast |
| US5838181A (en) * | 1995-02-09 | 1998-11-17 | Magnetek, Inc. | Pulse-width modulator circuit for use in low-cost power factor correction circuit |
| US6222322B1 (en) * | 1997-09-08 | 2001-04-24 | Q Technology Incorporated | Ballast with lamp abnormal sensor and method therefor |
| CN2689647Y (en) * | 2004-01-29 | 2005-03-30 | 林聪� | Ballast of low-frequency energy-saving light |
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| Publication number | Publication date |
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| CN1901771A (en) | 2007-01-24 |
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Granted publication date: 20100623 Termination date: 20120719 |