CN2657328Y - Power supply for deuterium lamp - Google Patents
Power supply for deuterium lampInfo
- Publication number
- CN2657328Y CN2657328Y CN 200320110816 CN200320110816U CN2657328Y CN 2657328 Y CN2657328 Y CN 2657328Y CN 200320110816 CN200320110816 CN 200320110816 CN 200320110816 U CN200320110816 U CN 200320110816U CN 2657328 Y CN2657328 Y CN 2657328Y
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- CN
- China
- Prior art keywords
- circuit
- filament
- deuterium lamp
- voltage
- power supply
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
A power supply for deuterium lamp is consisted of a trigger circuit, a preheat and working circuit of filament and a constant current source circuit of filament, which is characterized in that the constant current source circuit of filament is a current negative feedback circuit which is consisted of a high-precision comparison amplifier U2, a transistor Q1 and a large power transistor Q2. A reference signal provided by a stabilivolt tube D4 is accessed to a forward input terminal of the comparison amplifier U2, and a current-feedback signal provided by a feedback circuit is accessed to a reverse input terminal of the comparison amplifier U2. The comparison and amplified output are as a supply current between a cathode and a anode of the filament. The power supply for deuterium lamp of the utility model has a smaller coefficient of constant current sending out a stable ultraviolet spectrum which has a cheap price and is easy for making.
Description
Technical field:
The utility model relates to supply unit, the Power supply for deuterium lamp of more specifically saying so.
Background technology:
In recent years, along with science and technology and industrial expansion, the radiation of ultraviolet and vacuum ultraviolet (VUV) wave band has been widely used in material science, energy science, space science, environmental science, health care and many other science production fields.Deuterium lamp as the standard sources of this wavelength band can send stronger ultra-violet radiation, and stability, reproducibility are good, and the life-span is long, and volume is little, and is easy to use.The advantage that plasma radiation source and synchrotron radiation source have with itself is used as calibrated radiation source, and its value transmits by deuterium lamp.Utilize deuterium lamp can measure the spectral characteristic of various ultraviolet sources, detector, material.Particularly be applied to the regulation light source of flight instrumentation, be used for demarcating the spectral characteristic of some astronomical instruments of balloon, rocket and satellite, as satellite spectrometer, spectroheliometer etc.For deuterium lamp light radiant flux or the main influence of luminous intensity is exactly the influence of Power supply for deuterium lamp except the manufacture craft of deuterium lamp itself.All be applied in the spectral instrument at the most of deuterium lamps of China at present, the instability of spectral instrument is because the instability of deuterium lamp light source causes more than 90%.
Deuterium lamp is to grow up on the basis of hydrogen lamp, compares with hydrogen lamp, and it has advantages such as radiation intensity height, good stability, life-span length.When deuterium lamp is worked, i.e. after the filament energising heating, launch free electron, anode adds voltage, at this moment, free electron is the anode motion under the acceleration of electric field.In this process, free electron and deuterium molecule generation inelastic collision make deuterium molecule be in excitation state, when it returns original state or lower energy state, just emit energy with the form of radiation and luminous.Deuterium lamp can produce the continuous radiation in the wavelength 370nm-165nm, and its lower limit is by the beta radiation decision of Raman molecular, and the upper limit is limited by the Ba Ermai line spectrum.Some line spectrums of superposition on the continuous spectrum between the wavelength 370nm-400nm.
Need before the deuterium lamp lighting carry out preheating to filament, can light a lamp after reaching pre-heat effect, lighting a lamp to add transient voltage more than 300 volts between its anode A and negative electrode K, A then, and the voltage of maintenance (75 ± 15) between the K, deuterium lamp can be lighted like this.Be stability and its life-span of lighting a lamp of prolongation of keeping its luminosity, need to remove filament voltage after lamp is lighted or it is reduced in the scope at the end very, the trigger voltage of 300V is only kept of short duration time, A, will keep the high-precision current of 300mA between the K, deuterium lamp just can send stable spectrum like this.If the current stabilization of Power supply for deuterium lamp is not enough, the ultraviolet spectra that causes deuterium lamp to send is stable inadequately, then can't use on corresponding instrument.
Summary of the invention:
Technical problem to be solved in the utility model is to avoid above-mentioned existing in prior technology weak point, and a kind of very high current stabilization that has is provided, and can send stable ultraviolet spectra, and volume ratio is less, the Power supply for deuterium lamp that cost is lower.
The technical scheme that the utility model technical solution problem is adopted is:
The utility model is by circuits for triggering, filament pre-heating and operating circuit, and three parts of filament constant-current source circuit are formed.
Design feature of the present utility model is that described filament constant-current source circuit is by being high accuracy comparison amplifier U2, the current negative feedback circuit that triode Q1 and large power triode Q2 form, what the positive input of described comparison amplifier U2 inserted is the reference signal that is provided by voltage-stabiliser tube D4, reverse input end inserts by being the current feedback signal that is provided by feedback circuit, compares, amplifies output as supply current between the filament anode and cathode with it.
The utility model is to provide a constant-current source with the current negative feedback circuit for the deuterium lamp filament.Compared with the prior art, the utility model is simple in structure, cost is low, reliable operation, can greatly improve the stability of Power supply for deuterium lamp, thereby improves the work quality of deuterium lamp.
Fig. 1 is the utility model electrical block diagram.
Fig. 2 is the ultraviolet spectra that the deuterium lamp of a certain model sends under the loose company in Japanese shore Power supply for deuterium lamp.
Fig. 3 is the ultraviolet spectra that the deuterium lamp of same model sends under the utility model power supply.
Embodiment:
Referring to Fig. 1, present embodiment is by circuits for triggering, filament pre-heating and operating circuit, and three parts of filament constant-current source circuit are formed.Three parts carry out work according to the job requirement of deuterium lamp with certain time sequence.
In the present embodiment, the filament constant-current source circuit is by being high accuracy comparison amplifier U2, LM358, the current negative feedback circuit that triode Q1 and large power triode Q2 form.Wherein, what the positive input of comparison amplifier U2 inserted is the reference signal that is provided by voltage-stabiliser tube D4, and reverse input end inserts by being the current feedback signal that is provided by feedback circuit, compares, amplifies output as supply current between the filament anode and cathode with it.
Fig. 1 illustrates, circuits for triggering in the present embodiment are by transformer T11, time base integrated package U2, NE555 in capacitor C 25 and the sequence circuit, relay J 1, HH52P form, in order to the charging and discharging state of the capacitor C 25 of formation trigger voltage by relay contact J1-2 conversion and control.Just, utilize the charging of capacitor C 25 and discharge to produce trigger voltage, the state of its charging and discharging is by relay contact J1-2 conversion and control.
Shown in the figure, filament pre-heating and operating circuit are by transformer T14, amplifier U4, LM358 and the voltage stabilizing circuit that NPN triode Q3 forms, it provides the deuterium lamp filament at preheating and needed different voltage of when work respectively, with the output of the collector electrode of triode Q3 as pre-thermal voltage, with the emitter output of triode Q3 as operating voltage, in advance between thermal voltage and the operating voltage by relay contact J1-1 conversion and control.
Three part work have sequential, so this power supply adopted the sequential that has the HH52P of higher reliability relay J to finish Power supply for deuterium lamp, and sequence circuit also comprises and is used for capacitor C 8 and the variable resistor VR2 of the time of adjusting.After the energized, before relay J 1 was not moved, transformer T14 process voltage stabilizing rectification was that the filament of deuterium lamp adds pre-thermal voltage, and its voltage is 2.5V, and electric current is 4A, and transformer T11 charges to the capacitor C in the circuits for triggering 25 through rectifier bridge.Through about 10 seconds, relay J 1 begins action, 10 second time was controlled by time base integrated package U1, NE555 and an electric capacity, at this moment, the capacitor C 25 in the circuits for triggering is because the switching of relay contact J1-2 begins discharge, and the electric energy of capacitor C 25 is added on the deuterium lamp anode at short notice, at this moment deuterium lamp is in hot and is lighted under trigger voltage and anode voltage effect, filament pre-heating voltage is removed and is entered the operating voltage state simultaneously, and operating voltage is generally 1V, and electric current is 1.8A.Common deuterium lamp need be operated under the extremely stable situation of luminosity just valuable, and this just requires the constant-current source of the 300mA of Power supply for deuterium lamp to want highly stable.What the constant-current source in the present embodiment adopted is electric current series connection negative-feedback circuit, when the deuterium lamp heater current constant inadequately and when changing slightly, serial connection adjustment pipe emitter voltage wherein changes thereupon, its increments of change close loop negative feedback is held to amplifier "-", and compare with the reference voltage of "+" end voltage-stabiliser tube decision, the variation that its result has offset voltage increment makes it to keep stable, thereby has guaranteed that deuterium lamp filament operating current is invariable, so it has advantages of higher stability.The heater current size is important, and too low heater current can't be lighted deuterium lamp, and particularly in the environment of cold, but too high heater current makes deuterium lamp bright excessively, will shorten deuterium lamp useful life.
Present embodiment mainly is the L6565 model deuterium lamp of producing at the loose company in Japanese shore.
Experimental result compares and sums up
Fig. 2 and Fig. 3 are same deuterium lamp sends ultraviolet light respectively under Japanese shore pine company's Power supply for deuterium lamp and the utility model power supply spectrum.
Can draw the equal performance that the utility model has reached shore pine company power supply from the comparison of two spectral lines, compare with other domestic Power supply for deuterium lamp, it is smaller to the utlity model has current stability factor, and it is stable to send ultraviolet spectra, and low price is made advantages such as simple.
Claims (3)
1, Power supply for deuterium lamp, by circuits for triggering, filament pre-heating and operating circuit, and three parts of filament constant-current source circuit are formed, it is characterized in that described filament constant-current source circuit is by being high accuracy comparison amplifier (U2), the current negative feedback circuit that triode (Q1) and large power triode (Q2) are formed, what the positive input of described comparison amplifier (U2) inserted is the reference signal that is provided by voltage-stabiliser tube (D4), reverse input end inserts by being the current feedback signal that is provided by feedback circuit, compares, amplifies output as supply current between the filament anode and cathode with it.
2, Power supply for deuterium lamp according to claim 1, it is characterized in that described circuits for triggering are by transformer (T11), time base integrated package (U1), relay (J1) in electric capacity (C25) and the sequence circuit are formed, in order to the charging and discharging state of the electric capacity (C25) that forms trigger voltage by relay contact (J1-2) conversion and control.
3, Power supply for deuterium lamp according to claim 1 and 2, it is characterized in that described filament pre-heating and operating circuit are by transformer (T14), the voltage stabilizing circuit that an amplifier (U4) and a NPN triode (Q3) are formed, and with the output of the collector electrode of triode (Q3) as pre-thermal voltage, export as operating voltage with the emitter of triode (Q3), between described pre-thermal voltage and the operating voltage by relay contact (J1-1) conversion and control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320110816 CN2657328Y (en) | 2003-11-13 | 2003-11-13 | Power supply for deuterium lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320110816 CN2657328Y (en) | 2003-11-13 | 2003-11-13 | Power supply for deuterium lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2657328Y true CN2657328Y (en) | 2004-11-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320110816 Expired - Fee Related CN2657328Y (en) | 2003-11-13 | 2003-11-13 | Power supply for deuterium lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2657328Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102053231A (en) * | 2009-11-04 | 2011-05-11 | 北京普源精电科技有限公司 | Measuring device comprising deuterium lamp power supply |
| CN101707844B (en) * | 2009-12-08 | 2012-07-04 | 天津市东文高压电源厂 | Power source special for 2.5V/A deuterium lamp |
| CN103647213A (en) * | 2013-11-12 | 2014-03-19 | 福建中科光汇激光科技有限公司 | Efficient and rapid laser-pumping driving power supply and rapidly started laser device |
| CN105858798A (en) * | 2016-04-14 | 2016-08-17 | 佛山市顺德区美的饮水机制造有限公司 | Ultraviolet sterilization device and control method thereof and faucet assembly with ultraviolet sterilization device |
| CN114340074A (en) * | 2021-12-19 | 2022-04-12 | 安徽庆宇光电科技有限公司 | Deuterium lamp power supply used in DOAS technology |
-
2003
- 2003-11-13 CN CN 200320110816 patent/CN2657328Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102053231A (en) * | 2009-11-04 | 2011-05-11 | 北京普源精电科技有限公司 | Measuring device comprising deuterium lamp power supply |
| CN101707844B (en) * | 2009-12-08 | 2012-07-04 | 天津市东文高压电源厂 | Power source special for 2.5V/A deuterium lamp |
| CN103647213A (en) * | 2013-11-12 | 2014-03-19 | 福建中科光汇激光科技有限公司 | Efficient and rapid laser-pumping driving power supply and rapidly started laser device |
| CN103647213B (en) * | 2013-11-12 | 2016-04-27 | 福建中科光汇激光科技有限公司 | Efficient fast laser pumping driving power and the laser started fast |
| CN105858798A (en) * | 2016-04-14 | 2016-08-17 | 佛山市顺德区美的饮水机制造有限公司 | Ultraviolet sterilization device and control method thereof and faucet assembly with ultraviolet sterilization device |
| CN114340074A (en) * | 2021-12-19 | 2022-04-12 | 安徽庆宇光电科技有限公司 | Deuterium lamp power supply used in DOAS technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |