JPS6281081A - Laser unit - Google Patents
Laser unitInfo
- Publication number
- JPS6281081A JPS6281081A JP22138685A JP22138685A JPS6281081A JP S6281081 A JPS6281081 A JP S6281081A JP 22138685 A JP22138685 A JP 22138685A JP 22138685 A JP22138685 A JP 22138685A JP S6281081 A JPS6281081 A JP S6281081A
- Authority
- JP
- Japan
- Prior art keywords
- output voltage
- circuit
- output
- transformer
- switching circuit
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/097—Processes or apparatus for excitation, e.g. pumping by gas discharge of a gas laser
- H01S3/09705—Processes or apparatus for excitation, e.g. pumping by gas discharge of a gas laser with particular means for stabilising the discharge
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はレーザ装置に関し、特にレーザ電源回路の改良
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a laser device, and particularly to improvements in a laser power supply circuit.
従来、この種のレーザ装置は、第２図に示すように駆動
回路ｌの出力をスイッチング回路２に接続し、スイッチ
ング回路２の出力をトランス３により昇圧し、トランス
３の出力を整流回路４により整流し、整流回路４の一つ
の出力端を安定抵抗５を通して、レーザ管６のアノード
８に接続し１、もう一つの出力端をレーザ管６のカソー
ド９に接続する。Conventionally, this type of laser device connects the output of a drive circuit 1 to a switching circuit 2, as shown in FIG. One output end of the rectifier circuit 4 is connected to the anode 8 of the laser tube 6 through a stabilizing resistor 5, and the other output end is connected to the cathode 9 of the laser tube 6.
駆動回路ｌをＯＮするとレーザ管６のアノード８、カソ
ード９間が放電し、ミラー７．７′よりなる光共振器に
よりレーザ出力ｌＯが得られる。When the drive circuit 1 is turned on, a discharge occurs between the anode 8 and cathode 9 of the laser tube 6, and a laser output 10 is obtained by the optical resonator formed by the mirror 7.7'.
しかしながら、従来のレーザ装置は整流回路４の出力端
が短絡されても、スイッチング回路２は、出力電圧を上
昇させるように働くため、スイッチング回路に過電流が
流れ、劣化、破損する。！！た。However, in the conventional laser device, even if the output end of the rectifier circuit 4 is short-circuited, the switching circuit 2 works to increase the output voltage, so an overcurrent flows through the switching circuit, causing deterioration and damage. ! ! Ta.
スイッチング回路入力電圧が異常に上昇し、スイッチン
グ回路出力電圧が異常に上昇しても、スイ、チング回路
は働き続けるため整流回路４や、し−ザ管６が劣化、破
損するという欠点がある。Even if the switching circuit input voltage rises abnormally and the switching circuit output voltage rises abnormally, the switching circuit continues to work, which has the disadvantage that the rectifier circuit 4 and the laser tube 6 deteriorate or break.
本発明のレーザ装置は、トランスの２次巻線に出力電圧
検出巻線を設け、整流回路出力端が短絡し、トランス出
力電圧が異常に降下したときゃ、スイッチング回路入力
電圧が上昇し、トランス出力電圧が異常に上昇したとき
に、駆動回路の出力電圧を制御して、スイッチング回路
をＯＦＦにする回路を有している。In the laser device of the present invention, an output voltage detection winding is provided in the secondary winding of the transformer, and when the output end of the rectifier circuit is short-circuited and the transformer output voltage drops abnormally, the switching circuit input voltage increases and the transformer outputs It has a circuit that controls the output voltage of the drive circuit and turns off the switching circuit when the voltage increases abnormally.
次に本発明について第１図を参照にして説明する。 Next, the present invention will be explained with reference to FIG.
第１図は本発明の、一実施例のブロック図である。FIG. 1 is a block diagram of one embodiment of the present invention.
駆動回路ｌの出力をスイッチング回路２に接続し、スイ
ッチング回路２の出力をトランス３により昇圧し、トラ
ンス３の出力を整流回路４により整流し、整流回路４の
一つの出力端を安定抵抗５を通して、レーザ管６のアノ
ード８に接続し、もう一つの出力端をレーザ管６のカソ
ード９に接続する。The output of the drive circuit 1 is connected to the switching circuit 2, the output of the switching circuit 2 is boosted by the transformer 3, the output of the transformer 3 is rectified by the rectifier circuit 4, and one output end of the rectifier circuit 4 is connected through the stabilizing resistor 5. , is connected to the anode 8 of the laser tube 6, and the other output end is connected to the cathode 9 of the laser tube 6.
また、トランス３の２次差線の一つに出力電圧検出差線
１１を設け、その出力をダイオード１２゜１３、抵抗１
４，１５，１６，１７． コンテンツ。In addition, an output voltage detection difference line 11 is provided in one of the secondary difference lines of the transformer 3, and its output is connected to a diode 12゜13 and a resistor 1.
4, 15, 16, 17. content.
１９．２０により、整流１分圧しその検出電圧と、基準
電源２１の出力電圧とを比較増幅器２２ 、２３により
比較し、ダイオード２４を通して駆動回路７の出力を制
御する。駆動回路１をＯＮするとレーザ管６のアノード
８．カソード９間が放電し、ミラー７．７′よりなるう
ｖ＝共振器によりレーザ出力ｌＯが得られる。19.20, the rectified voltage is divided into 1, and its detected voltage is compared with the output voltage of the reference power supply 21 by comparison amplifiers 22 and 23, and the output of the drive circuit 7 is controlled through the diode 24. When the drive circuit 1 is turned on, the anode 8 of the laser tube 6 is turned on. A discharge occurs between the cathodes 9, and a laser output lO is obtained by the resonator formed by the mirrors 7, 7'.
次にこの回路の動作について説明すると、整流回路４の
出力９；ＩＡの短絡等によってトランス３の出力電圧が
異常に降下すると、出力電圧検出差１ｊ！１１の出力電
圧が規定値以下となるため、ダイオード１２、抵抗１４
，１５．コンデンサ１９により整流１分圧場れた検出電
圧Ｖａが基準電源２１の出力′電圧Ｖｓより低下するた
め比較増幅器２２の出力電圧は低下し、ダイオード２４
を通して、駆動回路ｌの出力電圧を低下させ、スイッチ
ング回路２をＯｋ’ Ｆとする。またスイッチング回路
２０入力電圧が異常に上昇し、トランス３の出力電圧が
上昇し、出力電圧検出巻線１１の出力電圧が規定値以上
となるためダイオード１３．抵抗１６．１７゜コンデン
サ２０により整流９分圧された検出電圧ｖｂが基準電源
２１の出力電圧Ｖｓより上昇するため、比較増幅器２３
の出力電圧は低下し、ダイオード２４を通して、駆動回
路ｌの出力電圧を低下させ、スイッチング回路２をＯＦ
Ｆとする。なおコンデンサ１８は駆動回路ｌの初期動作
時に駆動回路ｌの出力電圧を比較増幅器２２の（＋）入
力端に印加し、比較増幅器２２の出力電圧を上昇させ、
スイッチング回路２を動作させるためのものである。Next, the operation of this circuit will be explained. When the output voltage of the transformer 3 drops abnormally due to a short circuit of the output 9; IA of the rectifier circuit 4, the output voltage detection difference 1j! Since the output voltage of 11 is below the specified value, diode 12 and resistor 14
,15. Since the detection voltage Va rectified by the capacitor 19 becomes lower than the output voltage Vs of the reference power supply 21, the output voltage of the comparator amplifier 22 decreases, and the diode 24
, the output voltage of the drive circuit 1 is lowered, and the switching circuit 2 is set to Ok'F. Furthermore, the input voltage of the switching circuit 20 increases abnormally, the output voltage of the transformer 3 increases, and the output voltage of the output voltage detection winding 11 exceeds a specified value, so that the diode 13. Since the detection voltage vb rectified and divided by the resistor 16.17° capacitor 20 rises above the output voltage Vs of the reference power supply 21, the comparator amplifier 23
The output voltage of the drive circuit 1 is lowered through the diode 24, and the output voltage of the drive circuit 1 is lowered, and the switching circuit 2 is turned off.
Let it be F. Note that the capacitor 18 applies the output voltage of the drive circuit 1 to the (+) input terminal of the comparison amplifier 22 during the initial operation of the drive circuit 1, and increases the output voltage of the comparison amplifier 22.
This is for operating the switching circuit 2.
以上説明したように本発明は、！１流回路４の出力が短
絡した場合や、スイッチング回路の入力電圧が上昇した
場合にも、スイッチング回路は自動的にＯＦ Ｆとなる
ため、スイッチング回路、整流回路、レーザ管等の劣化
や破損を防止でき、長時間安矩にレーザ出力を得ること
ができる効果がある。As explained above, the present invention is! Even if the output of the 1st current circuit 4 is short-circuited or the input voltage of the switching circuit increases, the switching circuit will automatically turn off, preventing deterioration or damage to the switching circuit, rectifier circuit, laser tube, etc. This has the effect of making it possible to prevent this and obtain laser output stably for a long period of time.
第１図は本発明のレーザ装置のブロック図、第２図は従
来のレーザ装置のブロック図である。
ｌ・・・・・・駆動回路、２・・・・・・スイッチング
回路、３・・・・・・トランス、４・・・・・・整流回
路、５・・・・・・安定抵抗、６・・・・・・レーザ管
、７，７’・・・・・・ミラー、８・・・・・・アノー
ド、９００００６．カソード、１ｏ・・・田し−サ出力
、１１°゛°゛°°出力検出巻線、１２．１３．２４・
・・・・・ダイオード、１４，１５，１６．１７・・・
・・・抵抗、１８゜１９°°°゛°°フイルムコンデン
サ、２０−°゛・−ｉａ解コンデンサ、２１・・・・・
・基準電源、２２．２３・・・・・・比較増幅器。FIG. 1 is a block diagram of a laser device according to the present invention, and FIG. 2 is a block diagram of a conventional laser device. l... Drive circuit, 2... Switching circuit, 3... Transformer, 4... Rectifier circuit, 5... Stabilizing resistor, 6 ...Laser tube, 7,7'...Mirror, 8...Anode, 900006. Cathode, 1o... rice pad output, 11°゛°゛°°output detection winding, 12.13.24.
...Diode, 14, 15, 16.17...
...Resistor, 18゜19°°°゛°° film capacitor, 20-°゛・-ia solution capacitor, 21...
・Reference power supply, 22.23... Comparison amplifier.
Claims (1)
回路の出力を昇圧するトランスと、トランスの出力を整
流する整流回路と、整流回路出力により動作するレーザ
管を有するレーザ装置において、該トランスに出力電圧
検出巻線を設け、出力電圧検出巻線の出力電圧と基準電
源の出力電圧とを比較する比較増幅器と、該比較増幅器
の出力により前記駆動回路の出力を制御することを特徴
とするレーザ装置。In a laser device having a drive circuit that drives a switching circuit, a transformer that boosts the output of the switching circuit, a rectifier circuit that rectifies the output of the transformer, and a laser tube that operates based on the output of the rectifier circuit, the transformer has an output voltage detection winding. What is claimed is: 1. A laser device comprising: a comparison amplifier which is provided with a line and compares an output voltage of an output voltage detection winding with an output voltage of a reference power supply; and an output of the drive circuit is controlled by the output of the comparison amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22138685A JPS6281081A (en) | 1985-10-03 | 1985-10-03 | Laser unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22138685A JPS6281081A (en) | 1985-10-03 | 1985-10-03 | Laser unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6281081A true JPS6281081A (en) | 1987-04-14 |
Family
ID=16765959
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22138685A Pending JPS6281081A (en) | 1985-10-03 | 1985-10-03 | Laser unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6281081A (en) |
-
1985
- 1985-10-03 JP JP22138685A patent/JPS6281081A/en active Pending
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