Electric heating – Metal heating – By arc
Patent
1995-12-19
1997-05-20
Shaw, Clifford C.
Electric heating
Metal heating
By arc
219137PS, B23K 9095
Patent
active
056309546
ABSTRACT:
An apparatus and method for displaying data to a user of a cutting or welding system is provided. The apparatus preferably has an arc torch including at least an electrode having an arc discharge end and means for creating an electrical arc extending from the electrode to a workpiece and a cutting or welding power source operatively connected to the arc torch for supplying power to the arc torch. The cutting or welding power source preferably includes a power circuit having an electrical input line positioned to receive power from an external power supply, a transformer having a primary side connected to the input line and a secondary side, a rectifier connected to the secondary side of the transformer, and an output line connected to the rectifier. The power source also has a sensor connected to the secondary side of the transformer for sensing an electrical signal representative of at least either a voltage level or a current level, a digital display positioned to display digital data to a user of a cutting or welding system, and a display controller operatively connected to the sensor and the digital display for controlling the digital display responsive to the sensor. The display controller preferably includes a sampler responsive to the sensor for sampling a predetermined number of electrical signals representative of voltage and current and an averager responsive to the sampler for averaging the predetermined number of samples.
REFERENCES:
patent: 4103141 (1978-07-01), Wristen
patent: 4605836 (1986-08-01), Retfalvi et al.
patent: 5278390 (1994-01-01), Blankenship
patent: 5343016 (1994-08-01), Davis et al.
ESAB Welding & Cutting Products, Instruction Manual, VI 450 Welding Power Source, F-15-098-A, Mar. 1995.
L-TEC Welding & Cutting Systems, Instructions for L-TEC 450 Welding Power Supply, P/N 678530, F-12-961-B, Oct. 1990.
Shaw Clifford C.
The ESAB Group, Inc.
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