Title:
LASER OSCILLATOR CONTROL CIRCUIT
Document Type and Number:
WIPO Patent Application WO/1988/007274
Kind Code:
A1
Abstract:
A laser oscillator control circuit for controlling an instruction voltage that controls the output power of the laser. There is provided a pulse generator means (8) using a timer to generate a train of pulses corresponding to a signal from time setting means (5, 6) that set an on-time and an off-time. There are further provided a bias instruction voltage setting means (9) for setting the data of bias instruction voltage capable of starting the electric discharge, and an output voltage setting means (10) for setting an output power voltage data obtained by adding the output power and the bias instruction voltage. A selector (11) selects the output power voltage when the pulse train is on, and selects the bias instruction voltage when the pulse is off. The output is converted by the DA converter (12) into an analog voltage to control the high-frequency power source (21).
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Inventors:
YAMAZAKI ETSUO (JP)
Application Number:
PCT/JP1988/000184
Publication Date:
September 22, 1988
Filing Date:
February 19, 1988
Export Citation:
Assignee:
FANUC LTD (JP)
International Classes:
H01S3/00; H01S3/097; H01S3/0975; H01S3/10; H01S3/104; (IPC1-7): H01S3/104
Foreign References:
| JPH04744315B | ||||
| JPH05642392A | ||||
| JPS57183088A | 1982-11-11 | |||
| JPS60223179A | 1985-11-07 | |||
| JPS55148480A | 1980-11-19 | |||
| JPS56144587A | 1981-11-10 | |||
| JPH05990242A |
Other References:
See also references of EP 0308511A1
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