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
Estimating the term…
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 first voltage and a second voltage, the power supply comprising:
- a first contactor associated with a first circuit to provide the first voltage;
- a second contactor associated with a second circuit to provide the second voltage;
- and
- an auxiliary switch operatively coupled to the first contactor, the auxiliary switch configured to prevent the second circuit from closing when the first contactor is closed to complete the first circuit, thereby preventing transmission of the first voltage to the second circuit through the first contactor.
A welding-type power supply configured to supply a first voltage and a second voltage, the power supply comprising:
- a first circuit to provide the first voltage;
- a second circuit to provide the second voltage;
- a first and second contactor associated with the second circuit to provide the second voltage;
- and
- a selector switch operatively coupled to a portion of the first circuit, the selector switch to command the first or second contactor to a first position to close the second circuit, thereby preventing the first circuit from closing when the second circuit is closed to prevent transmission of the first voltage to the second circuit through the first or second contactor in the first position.
A method of operating a welding-type power supply comprising:
- closing a first and second contactor operatively coupled to a selector switch;
- and
- opening a portion of a first circuit by releasing the first or second contactor in response to opening of the selector switch to prevent a second output voltage from being applied to the first circuit.
Dependencies are inferred from the claim text.