JPS6489382A - Laser device - Google Patents

Laser device

Info

Publication number
JPS6489382A
JPS6489382A JP24566887A JP24566887A JPS6489382A JP S6489382 A JPS6489382 A JP S6489382A JP 24566887 A JP24566887 A JP 24566887A JP 24566887 A JP24566887 A JP 24566887A JP S6489382 A JPS6489382 A JP S6489382A
Authority
JP
Japan
Prior art keywords
voltage
predetermined value
rectifying circuit
power supply
input
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
Application number
JP24566887A
Other languages
Japanese (ja)
Inventor
Norio Takahashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to JP24566887A priority Critical patent/JPS6489382A/en
Publication of JPS6489382A publication Critical patent/JPS6489382A/en
Pending legal-status Critical Current

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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Lasers (AREA)

Abstract

PURPOSE:To improve reliability of a laser device power supply by providing a rectifying circuit for detecting an ac input voltage in a low-voltage rectifying circuit, and a current relay which is connected by a Zener diode and a photocoupler for detecting the output voltage thereof. CONSTITUTION:When a voltage at an ac power supply 1 is below a predetermined value, voltages at both terminals of capacitor 16 are likewise below a predetermined value, whereby a luminescent element of a photocoupler 17 is not conducting due to the presence of a Zener element 15, and a current relay 18 is inoperative, while an input voltage is input to a voltage doubling rectifying circuit consisting of diodes 3, 4 and capacitors 7, 8. When a voltage of the power supply 1 exceeds the predetermined value, the voltage of the capacitor 16 likewise exceeds the predetermined value. This causes the current relay 18 to be energized by a resistance 14 and the photocoupler 17, a contact ab to be closed, and an input of the power supply 1 to be rectified in the rectifying circuit consisting of diodes 3-6 and capacitors 7, 8. According to the constitution, a rectified output below a predetermined value can always be obtained in a switching circuit 9, whereby the switching circuit 9, a transformer 10, and the rectifying circuit 11 are free from being damaged.
JP24566887A 1987-09-29 1987-09-29 Laser device Pending JPS6489382A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24566887A JPS6489382A (en) 1987-09-29 1987-09-29 Laser device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24566887A JPS6489382A (en) 1987-09-29 1987-09-29 Laser device

Publications (1)

Publication Number Publication Date
JPS6489382A true JPS6489382A (en) 1989-04-03

Family

ID=17137039

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24566887A Pending JPS6489382A (en) 1987-09-29 1987-09-29 Laser device

Country Status (1)

Country Link
JP (1) JPS6489382A (en)

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