LASER POWER SUPPLY CONTROL METHOD AND LASER POWER SUPPLY
PROBLEM TO BE SOLVED: To protect a laser power supply by quickly responding to an overload in the laser power supply. SOLUTION: A current flowing from an RF inverter 5 to a laser oscillator 7 is measured by a current detector 9, a control circuit 13 judges an overload at the laser power supply 1 by...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | PROBLEM TO BE SOLVED: To protect a laser power supply by quickly responding to an overload in the laser power supply. SOLUTION: A current flowing from an RF inverter 5 to a laser oscillator 7 is measured by a current detector 9, a control circuit 13 judges an overload at the laser power supply 1 by comparing the current measured to a chopping wave, and a pulse wave modulating circuit 15 decreases the pulse width of a pulse command which controls the current during the overload. In this way, the current is reduced and the laser power supply 1 is protected. |
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