US 11,745,286 B2
Methods and apparatus to detect stray welding-type current
Joseph C. Schneider, Greenville, WI (US); Michael D. Madsen, Freemont, WI (US); Bernard J. Vogel, Troy, OH (US); and Andrew J. Henry, Appleton, WI (US)
Assigned to Illinois Tool Works Inc., Glenview, IL (US)
Filed by Illinois Tool Works Inc., Glenview, IL (US)
Filed on May 29, 2020, as Appl. No. 16/887,491.
Claims priority of provisional application 62/855,222, filed on May 31, 2019.
Prior Publication US 2021/0016387 A1, Jan. 21, 2021
Int. Cl. B23K 11/25 (2006.01); B23K 9/10 (2006.01); B23K 11/24 (2006.01)
CPC B23K 11/25 (2013.01) [B23K 9/1043 (2013.01); B23K 11/241 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A welding-type power supply, comprising:
power conversion circuitry configured to convert input power to welding-type power, and to output the welding-type power via a welding-type circuit;
a temperature sensor configured to measure a temperature of at least one component of the welding-type power supply; and
stray current detection circuitry configured to detect stray welding-type current based on the measured temperature of the at least one component, wherein the stray current detection circuitry is configured to detect the stray welding-type current when the measured temperature satisfies a threshold temperature.