System and method for preventing high voltage on a low voltage output in a welding-type system
AssigneeIllinois Tool Works Inc.
InventorRoss Renner
Life of this patent
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Abstract
Systems and methods for a welding-type power supply to provide both a welding output voltage and a battery charging output voltage. The power supply includes a first contactor associated with a first circuit to provide the welding output voltage, and a second contactor associated with a second circuit to provide the battery charging output voltage. An auxiliary switch is operatively coupled to the second contactor, to prevent the first circuit from closing when the second contactor is closed to prevent transmission of the welding output voltage to the second circuit.
Claims20
A welding-type power supply configured to supply a welding output voltage and a battery charging output voltage, the power supply comprising:
- a first contactor associated with a first circuit to provide the welding output voltage;
- a second contactor associated with a second circuit to provide the battery charging output voltage;
- and
- an auxiliary switch operatively coupled to the second contactor, the auxiliary switch configured to prevent the first circuit from closing when the second contactor is closed to prevent transmission of the welding output voltage to the second circuit.
A welding-type power supply configured to supply a welding output voltage and a battery charging output voltage, the power supply comprising:
- a first circuit to provide the welding output voltage;
- a second circuit to provide the battery charging output voltage;
- a first and second contactor associated with the second circuit to provide the battery charging output voltage;
- and
- a selector switch operatively coupled to a portion of the second circuit to prevent the second circuit from closing when the first circuit is closed to prevent transmission of the welding output voltage to the second circuit.
A method of operating a welding-type power supply configured to supply a welding output voltage and a battery charging output voltage, the method comprising:
- closing a first and second contactor associated with the battery charge output voltage, the first and second contactor operatively coupled to a selector switch;
- and
- opening a portion of a battery charging circuit in response to opening of the selector switch to prevent welding output voltage from being applied to the battery charging circuit.
Dependencies are inferred from the claim text.