Invention Application
- Patent Title: SYSTEMS AND METHODS TO PROVIDE WELDING-TYPE ARC STARTING AND STABILIZATION WITH REDUCED OPEN CIRCUIT VOLTAGE
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Application No.: US16670993Application Date: 2019-10-31
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Publication No.: US20210129250A1Publication Date: 2021-05-06
- Inventor: Bernard J. Vogel , Michael D. Madsen
- Applicant: Illinois Tool Works Inc.
- Applicant Address: US IL Glenview
- Assignee: Illinois Tool Works Inc.
- Current Assignee: Illinois Tool Works Inc.
- Current Assignee Address: US IL Glenview
- Main IPC: B23K9/067
- IPC: B23K9/067 ; B23K9/073

Abstract:
Systems and methods to provide welding-type arc starting and stabilization with reduced open circuit voltage are disclosed. An example welding-type power supply includes: power conversion circuitry configured to convert input power to welding-type power; and control circuitry configured to: control the power conversion circuitry to output a voltage pulse at a first voltage; determine whether the power conversion circuitry outputs current during the voltage pulse; in response to determining that there is less than a threshold output current during the voltage pulse, control the power conversion circuitry to turn off an output or output a second voltage that is less than the first voltage; and in response to determining that the power conversion circuitry outputs at least the threshold output current during the voltage pulse, control the power conversion circuitry to output the welding-type power.
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